Incorporating Additional Material Or Chemically Reactive Agent Patents (Class 164/473)
  • Patent number: 10455680
    Abstract: A deoxidation system for purifying target material for an EUV light source includes a furnace having a central region and a heater for heating the central region in a uniform manner. A vessel is inserted in the central region of the furnace, and a crucible is disposed within the vessel. A closure device covers an open end of the vessel to form a seal having vacuum and pressure capability. The system also includes a gas input tube, a gas exhaust tube, and a vacuum port. A gas supply network is coupled in flow communication with an end of the gas input tube and a gas supply network is coupled in flow communication with an end of the gas exhaust tube. A vacuum network is coupled in flow communication with one end of the vacuum port. A method and apparatus for purifying target material also are described.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: October 22, 2019
    Assignee: ASML NETHERLANDS B.V.
    Inventors: Georgiy Vaschenko, Peter Baumgart, Chirag Rajyaguru, Benjamin Sams, Armin Ridinger, Janine Kardokus
  • Patent number: 10294546
    Abstract: Provided is a method for increasing the rate of recovery of valuable metals when waste batteries batteries are treated by a dry process. The valuable metal recovery method in the dry step S20 includes a melting step ST21 including melting waste batteries to form a melt, a slag separation step ST22 including separating slag from the melt, and an alloy separation step ST23 including separating an alloy of valuable metals from the melt, wherein the slag has an aluminium oxide content of 20% by weight to less than 75% by weight and an iron content of 5% by weight to 40% by weight, calculated as metallic iron, and silicon oxide and calcium oxide are added as fluxes in the melting step ST21 so that the slag can have a melting point of at least 1,500° C., preferably at most 1,650° C.
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: May 21, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Jun-ichi Takahashi, Kazuhiro Mori
  • Patent number: 9623480
    Abstract: A method of producing a steel foam component includes providing a mold defining a cavity. The method also includes positioning an insert within the cavity of the mold. The insert can be configured to form a generally uniform pattern of pores within the steel foam component, and in some cases occupies at least 20% of the cavity. The method can further include pouring molten steel into the cavity, cooling the molten steel into the steel foam component, and removing the steel foam component and the insert from the mold. Steel components having internal shapes corresponding to the insert(s) are also provided.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: April 18, 2017
    Assignees: Maynard Steel Casting Company
    Inventor: Hathibelagal M. Roshan
  • Patent number: 9586258
    Abstract: A molding device for vacuum casting a metal ingot is provided. The mold includes a mold cavity defined by an ingot mold, a core and a bottom. The mold is arranged inside a vacuum-cast enclosure and includes a source of introducing molten metal at the upper portion thereof. A distribution device for receiving and distributing molten metal, which is suitable for receiving the molten steel introduced into the vacuum-cast enclosure and for redistributing the molten metal in the mold cavity, is arranged at the upper portion of the mold cavity. The molten metal is introduced into the enclosure so as to form a first jet of molten steel under a vacuum, in order to pour the molten metal over the distribution device and to form at least one second jet of molten steel under a vacuum, which originates with the distribution device and terminates in the mold cavity so as to fill the mold cavity with molten metal.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 7, 2017
    Assignee: ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO S.L.
    Inventors: Thierry Faudan, Jean-Luc Dabin, Gilbert Lacagne, Maxime Leroy, Bruno Savalli, Franck Braconnier
  • Patent number: 9284617
    Abstract: A new alloy, obtained through a new method, which presents the mechanical and physical properties of the gray iron alloy, with a wide interface range of the CGI's tensile strength (TS). This new alloy, flake graphite based, is a High Performance Iron (HPI) alloy. Therefore, besides its high tensile strength, the HPI alloy presents excellent machinability, damping vibration, thermal conductivity, low shrink tendency and good microstructure stability (compatible with gray iron alloys). HPI's characteristics are obtained by a method that defines a specific interaction among five metallurgical fundaments: chemical analysis; oxidation of the liquid metal; nucleation of the liquid metal; eutectic solidification and eutectoidic solidification.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: March 15, 2016
    Assignee: TEKSID DO BRASIL LTDA.
    Inventors: Otto Luciano Mol de Oliveira, Jefferson Pinto Villafort
  • Patent number: 9149867
    Abstract: A low-carbon steel slab producing method includes: adding Ti to a molten steel decarbonized to have a carbon concentration of 0.05 mass % or less, and subsequently adding at least one of La and Ce to adjust a constitution, and producing a smelted molten steel; and pouring the smelted molten steel into a casting mold via a tundish; wherein at least one of La and Ce in a total amount of 0.2 to 1.2 times an increased amount of oxygen in the smelted molten steel during contained in the tundish is added to the smelted molten steel in the tundish, so as to obtain a steel slab having inclusions which contain oxides of Ti and at least one of La and Ce as chief components, and so as to make a composition of each of the inclusions have a mass ratio of 0.1 to 0.7, in terms of (La2O3+Ce2O3)÷TiOn (n=1˜2).
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: October 6, 2015
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Masafumi Miyazaki, Hideaki Yamamura, Satoru Mineta
  • Patent number: 9004150
    Abstract: A new method for continuous casting of molten metal is provided that allows one to obtain an intermediate product such as slab, billet wire, etc. before subsequent thermomechanical treatment (e.g. lamination or annealing), such that its chemical composition is modified by the addition of elements in order to give it greater mechanical strength.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 14, 2015
    Assignee: Centre de Recherches Metallurgiques ASBL—Centrum Voor Research in de Metallurgie VZW
    Inventors: Paul Naveau, Astrid De Ro
  • Publication number: 20150027656
    Abstract: A method for preparing low-cost clean steel includes steps of: preliminarily desulfurizing iron melt: preliminarily desulfurizing in an iron melt channel during blast furnace tapping and during iron folding in an iron folding room, adding a desulfurizing ball into the iron melt during the blast furnace tapping or the iron folding; dephosphorizing and controlling sulfur: dephosphorizing and controlling sulfur during converter steelmaking, in such a manner that P?0.014% and S?0.004% during tapping; rapidly dephosphorizing by slag-forming: rapidly dephosphorizing by slag-forming during converter tapping, at a converter end point, controlling a C content at 0.02˜0.10%, adding a dephosphorizing ball through an alloy chute during the converter tapping, blowing argon and stirring at the same time; purifying steel melt during RH refining: adding a purifying ball at a late stage of the RH refining when a vacuum degree is at 66.7˜500 Pa; and continuously casting with whole-process protection.
    Type: Application
    Filed: March 13, 2012
    Publication date: January 29, 2015
    Inventors: Fuping Tang, Zhen Li, Xiaofeng Wang, Peng Fei, Jinsong Meng, Yue Zhang, Yong Ma, Wenzhong Wang, Zhiwen Zhang, Xiaohan Wang, Meng Guo, Zhigang Zhao, Yang Lin, Guoqiang Xin, Weizhi Yao
  • Publication number: 20150030495
    Abstract: A pivotable tundish (1) for continuous casting a metal alloy. The tundish comprises a body (3) comprising a first chamber (5), a second chamber (7), a first passage (12) between the first chamber and the second chamber, and a second passage (16) between the second chamber and a mold (9). The first chamber is adapted to receive and hold a base metal constituting the base for forming the metal alloy by addition of alloying elements. The metal alloy is fed from the second chamber to the mold through the second passage. The second chamber further comprises a first portion (30) and a second portion (32), and a third passage (36) between the first portion and the second portion. In the casting state the metal alloy is formed while casting by adding the alloying elements to the second portion of the second chamber.
    Type: Application
    Filed: February 10, 2012
    Publication date: January 29, 2015
    Applicant: Luvata Espoo Oy
    Inventor: Sarita Hernesniemi
  • Publication number: 20140170017
    Abstract: Disclosed is an aluminum alloy, including: about 14˜20 wt % of Si; about 2˜7.5 wt % of Ti; about 1˜3 wt % of B; and a balance of Al as a main component, wherein wt % are based on the total weight of the aluminum alloy and wherein a ratio of Ti/B is about 2˜2.5:1.
    Type: Application
    Filed: March 14, 2013
    Publication date: June 19, 2014
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Hoon Mo Park, Kyung Moon Lee, Hoo Dam Lee
  • Patent number: 8752613
    Abstract: The present invention relates to the field of magnesium and magnesium alloy processing, and discloses the use of aluminum-zirconium-titanium-carbon (Al—Zr—Ti—C) intermediate alloy in wrought processing of magnesium and magnesium alloys, wherein the aluminum-zirconium-titanium-carbon intermediate alloy has a chemical composition of: 0.01% to 10% Zr, 0.01% to 10% Ti, 0.01% to 0.3% C, and Al in balance, based on weight percentage; the wrought processing is plastic molding; and the use is to refine the grains of magnesium or magnesium alloys. The present invention further discloses the method for using the aluminum-zirconium-titanium-carbon (Al—Zr—Ti—C) intermediate alloy in casting and rolling magnesium and magnesium alloys. The present invention provides an aluminum-zirconium-titanium-carbon (Al—Zr—Ti—C) intermediate alloy and the use thereof in the plastic wrought processing of magnesium or magnesium alloys as a grain refiner.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: June 17, 2014
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Qingdong Ye, Yueming Yu, Jianguo Li
  • Patent number: 8746324
    Abstract: The present invention relates to the field of magnesium and magnesium alloy processing, and discloses a use of aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy in wrought processing of magnesium and magnesium alloys, wherein the aluminum-zirconium-carbon intermediate alloy has a chemical composition of: 0.01% to 10% Zr, 0.01% to 0.3% C, and Al in balance, based on weight percentage; the wrought processing is plastic molding; and the use is to refine the grains of magnesium or magnesium alloys. The present invention further discloses the method for using the aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy in casting and rolling magnesium and magnesium alloys. The present invention provides an aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy and the use thereof in the plastic wrought processing of magnesium or magnesium alloys as a grain refiner.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: June 10, 2014
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Qingdong Ye, Yueming Yu, Jianguo Li
  • Patent number: 8695684
    Abstract: The present invention discloses a method for producing an aluminum-zirconium-titanium-carbon (Al—Zr—Ti—C) intermediate alloy; the Al—Zr—Ti—C intermediate alloy comprises 0.01% to 10% Zr, 0.01% to 10% Ti, 0.01% to 0.3% C, and Al in balance; the producing method comprising the steps of: preparing commercially pure aluminum, zirconium, titanium, and graphite material according to the weight percentages of the aluminum-zirconium-titanium-carbon intermediate alloy; the graphite powder is subjected to the following treatments: being added to the aqueous solution of KF, NaF, K2ZrF6, K2TiF6 or the combination thereof, soaked for 12 to 72 hours, filtrated or centrifuged, and dried at 80° C. to 200° C. for 12 to 24 hours; melting the commercially pure aluminum and keeping it at 700° C. to 900° C. to provide aluminum liquid, in which the prepared zirconium, the titanium and the treated graphite powder are added and melted to provide an alloy solution; and keeping the alloys solution at 700° C. to 900° C.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: April 15, 2014
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Qingdong Ye, Yueming Yu, Jianguo Li
  • Patent number: 8672020
    Abstract: The present invention discloses a method for producing an aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy; the Al—Zr—C intermediate alloy has a chemical composition of 0.01% to 10% Zr, 0.01% to 0.3% C, and Al in balance; the producing method comprising the steps of: producing commercially pure aluminum, zirconium metal, and graphite material according to the weight percentages of the aluminum-zirconium-carbon intermediate alloy; the graphite is graphite powder having an average particle size of 0.074 mm to 1 mm; and the graphite powder is subjected to the following treatments: being added to the aqueous solution of KF, NaF, K2ZrF6, K2TiF6 or the combination thereof, soaked for 12 to 72 hours, filtrated or centrifuged, and dried at 80° C. to 200° C. for 12 to 24 hours; melting the commercially pure aluminum and keeping it at 700° C. to 900° C.
    Type: Grant
    Filed: April 23, 2011
    Date of Patent: March 18, 2014
    Assignee: Shenzhen Sunxing Light Alloys Materials Co., Ltd.
    Inventors: Xuemin Chen, Qingdong Ye, Yueming Yu, Jianguo Li
  • Publication number: 20140000834
    Abstract: A method for manufacturing an austenitic stainless steel from a nickel laterite ore and a chromite ore includes the steps of determining a nickel content of the nickel laterite ore; processing the nickel laterite ore into a nickel-containing precursor based on the determination; obtaining a molten ferrochrome from the chromite ore; transferring the nickel-containing precursor into a converter, and hot charging the molten ferrochrome into the converter to obtain a molten stainless steel; and charging the molten stainless steel into a continuous casting machine to obtain a stainless steel slab.
    Type: Application
    Filed: June 24, 2013
    Publication date: January 2, 2014
    Inventors: Wen-Chien Hsu, Pei-Te Huang, Yi-Cheng Wu, Cheng-Tung Yang
  • Patent number: 8505612
    Abstract: A method to cover the exposures of a bath of molten steel by elements of casting powder in an ingot mold of a plant for the continuous casting of steel, including a step of subdividing the ingot mold into a desired number of zones, with each of which a covering movement is associated, the zones being determined and identified in a manner coordinated with the position of the snorkel and of the edge of the ingot mold, and a step of automated execution of one or more covering movements by elements of which the casting powder is distributed in a selected one of the zones, which movements, repeated in sequence according to a desired program, are selected from a group including pouring movements and throwing movements, at least on the basis of the reciprocal position of each of the zones and the snorkel.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: August 13, 2013
    Assignee: Danieli Automation SpA
    Inventor: Ferruccio Della Vedova
  • Publication number: 20130183193
    Abstract: A magnesium alloy that has excellent ignition resistance and is excellent in both strength and ductility. The magnesium alloy includes, by weight, 1.0% or greater but less than 7.0% of Al, 0.05% to 2.0% of Ca, 0.05% to 2.0% of Y, greater than 0% but not greater than 6.0% of Zn, and the balance of Mg, and the other unavoidable impurities. The total content of the Ca and the Y is equal to or greater than 0.1% but less than 2.5% of the total weight of the magnesium alloy. The Mg alloy forms a dense composite oxide layer that acts as a protective film. Thus the Mg alloy has very excellent oxidation resistance and ignition resistance, can be melted, cast and machined in the air or a common inert atmosphere (Ar or N2), and can reduce the spontaneous ignition of chips that are accumulated during the process of machining.
    Type: Application
    Filed: October 4, 2011
    Publication date: July 18, 2013
    Applicant: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Young Min Kim, Ha Sik Kim, Bong Sun You, Chang Dong Yim
  • Patent number: 8307883
    Abstract: The present invention relates to a mold powder supply apparatus using the waste heat of a tundish, which can collect waste heat from molten steel in the tundish, and preheat and dry mold powder. The mold powder supply apparatus using the waste heat of a tundish according to an embodiment of the present invention includes: a powder hopper that is mounted to a frame close to a tundish to absorb heat radiated from the top of the tundish, through one side; an agitator that agitates mold powder filled in the powder hopper; and a supply pipe that is connected to the bottom of the powder hopper to supply the powder hopper into a mold.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: November 13, 2012
    Assignee: Hyundai Steel Company
    Inventors: Jinsoo Jang, Jutae Choi, Sukhyun Yoo
  • Patent number: 8302667
    Abstract: The present invention provides tough cast iron and cast iron semi-finished products excellent in workability without heat treatment requiring massive heat energy and long time and a method of production enabling these to be efficiently produced, that is, cast iron of ingredients of white cast iron where particles of spheroidal graphite or flattened graphite are dispersed, cast iron where the ingredients of the white cast iron satisfy, by wt %, (% C)?4.3?(% Si)÷3 and C?1.7% and where the particles of spheroidal graphite are dispersed at a density of 50 particles/mm2 or more, or cast iron where the particles of flattened graphite have a width of 0.4 mm or less and a length of 50 mm or less.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: November 6, 2012
    Assignee: Nippon Steel Corporation
    Inventors: Hideaki Yamamura, Wataru Ohashi
  • Publication number: 20120255700
    Abstract: In a mold for casting a billet with a curved type continuous casting apparatus, D0 (m) is an inner diameter at a lower mold edge and R0 (m) is a curvature radius of an outer curvature side at the lower mold edge. When a rate of change Tp (%/m) in mold inner diameter per unit length along a casting direction is Tp=(1/D0)×(dD/dx)×100 (%/m), and when a rate of change Rp (%/m) in curvature radius of an outer curvature side per unit length along the casting direction is Rp=(1/R0)×(dR/dx)×100 (%/m), the rate of change Tp in mold inner diameter and the rate of change Rp in curvature radius satisfy a relationship expressed Rp=(Tp/2)×(D0/R0), where D is a mold inner diameter at a distance x away from an upper mold edge and R in Formula 2 is a curvature radius of the outer curvature side at the distance x.
    Type: Application
    Filed: June 21, 2012
    Publication date: October 11, 2012
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Masayuki KAWAMOTO, Yuichi TSUKAGUCHI, Masahito HANAO, Atsuhi HIRATA, Hiroshi HAYASHI, Manabu ADACHI
  • Patent number: 8251128
    Abstract: Provided is a method of continuously producing a phosphorus-containing copper alloy wire by adding phosphorus or an element which is less soluble than phosphorus to molten copper. The method includes: adding an element less soluble into a heating furnace for maintaining molten copper sent from a melting furnace at a predetermined high temperature; transferring the molten copper sent from the heating furnace to a tundish; adding phosphorus to the molten copper after decreasing the temperature of the molten copper in the tundish; supplying the molten copper from the tundish to a belt wheel-type continuous casting apparatus; and rolling a cast copper material output from the belt wheel-type continuous casting apparatus, thereby continuously producing a phosphorus-containing copper alloy wire.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: August 28, 2012
    Assignee: Mitsubishi Materials Corporation
    Inventors: Yoshiaki Hattori, Hitoshi Nakamoto
  • Patent number: 8210238
    Abstract: A continuous casting machine and method using molten mold flux, wherein the continuous casting machine includes a mold cover for covering an upper portion of a mold; a mold flux melting unit for melting mold flux to be supplied into the mold; and a mold flux delivery unit for supplying the mold with the molten mold flux melted in the mold flux melting unit, wherein the delivery unit includes an injection tube with one end connected to the mold flux melting unit and the other end positioned in the mold through the mold cover, and an injection tube heater for heating the injection tube. Since a slag bear continuous casting machine and method using molten mold flux is removed, the consumption of mold flux is greatly increased compared with the case of a conventional casting work, so that the friction between a mold and a solidified shell is reduced. As a result, an amount of scarfing of a cast piece is greatly reduced and no carbon pick-up occurs.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: July 3, 2012
    Assignee: Posco
    Inventors: Jung Wook Cho, Hyun Seok Jeong, Jong Min Park, Goo Hwa Kim, Oh Duck Kwon, Joong Kil Park, Soon Kyu Lee, Sang Ho Lee, Ki Hyeon Moon
  • Patent number: 8191607
    Abstract: A continuous casting machine injecting molten mold flux into a mold includes: melt-surface covers covering the upper side of the mold; gas aspirators provided below the melt-surface covers for inhaling the gas in an upper space of the mold; and purge gas injectors provided below the melt-surface covers for injecting purge gas into the upper space of the mold.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: June 5, 2012
    Assignee: Posco
    Inventors: Jung Wook Cho, Sang Pil Lee, Jae Suk Hong, Soon Kyu Lee
  • Patent number: 8122941
    Abstract: The present invention is directed to an aluminum alloy including aluminum as a basic component, silicon, copper, magnesium, iron, manganese, zinc, nickel and the like in a predetermined composition ratio, and a method of manufacturing of a vehicle cylinder liner having excellent wear resistance and heat resistance using the aluminum alloy. The method of manufacturing a vehicle cylinder liner includes the steps of: adding 50˜500 ppm of phosphorus (P) to the aluminum alloy while maintaining a temperature of the aluminum alloy at 700˜800° C. in a holding furnace, stabilizing the molten aluminum alloy including the phosphorus (P) for 30˜60 minutes to reform the molten aluminum alloy, and then continuous-casting the reformed molten aluminum alloy to form a round bar; hot-forging the round bar to forming a cylindrical liner; and machining an internal surface of the cylinder liner, with which a reciprocating piston comes into contact, to allow silicon particles to protrude.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: February 28, 2012
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Gi Kim, Seok Jun Kim, Hoon Mo Park
  • Publication number: 20110308758
    Abstract: The present invention discloses a method for producing an aluminum-zirconium-carbon (Al—Zr—C) intermediate alloy; the Al—Zr—C intermediate alloy has a chemical composition of 0.01% to 10% Zr, 0.01% to 0.3% C, and Al in balance; the producing method comprising the steps of: producing commercially pure aluminum, zirconium metal, and graphite material according to the weight percentages of the aluminum-zirconium-carbon intermediate alloy; the graphite is graphite powder having an average particle size of 0.074 mm to 1 mm; and the graphite powder is subjected to the following treatments: being added to the aqueous solution of KF, NaF, K2ZrF6, K2TiF6 or the combination thereof, soaked for 12 to 72 hours, filtrated or centrifuged, and dried at 80° C. to 200° C. for 12 to 24 hours; melting the commercially pure aluminum and keeping it at 700° C. to 900° C.
    Type: Application
    Filed: April 23, 2011
    Publication date: December 22, 2011
    Applicant: Sun Xing Chemical & Metallurgical Materials (Shenzhen) Co., Ltd.
    Inventors: Xuemin Chen, Qingdong Ye, Yueming Yu, Jianguo Li
  • Publication number: 20110297280
    Abstract: Ferritic spheroidal graphite cast iron includes: 3.1 to 3.5 percent by mass of carbon; 4.1 to 4.5 percent by mass of silicon; 0.8 percent by mass or below of manganese; 0.1 to 0.6 percent by mass of molybdenum; 0.1 to 1.0 percent by mass of chromium; 0.03 to 0.1 percent by mass of phosphorus; 0.03 percent by mass or below of sulfur; 0.02 to 0.15 percent by mass of magnesium; and iron.
    Type: Application
    Filed: February 19, 2010
    Publication date: December 8, 2011
    Inventors: Yoshikazu Genma, Go Kuramoto, Yoshihiro Hibino, Zhong-zhi Zhang, Takeyuki Sakuma
  • Publication number: 20110273054
    Abstract: In a method for manufacture of electrical steel a liquid steel mixture is created with a specified mixture chemistry. A continuous casting is performed to convert the liquid steel mixture to a slab. Hot roll steel band is created from the slab which is then pickled and hot band annealed, and then a cold rolled steel strip is formed. In a continuous annealing line, the cold rolled strip is annealed to achieve a partial recrystallization with a smaller grain size than would be the grain size with a complete recrystallization. Electrical steel created by the method is used for rotors and matching stators of a motor with properties at high strength and low electrical losses.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 10, 2011
    Inventor: Gwynne Johnston
  • Publication number: 20100326619
    Abstract: The present invention is directed to an aluminum alloy including aluminum as a basic component, silicon, copper, magnesium, iron, manganese, zinc, nickel and the like in a predetermined composition ratio, and a method of manufacturing of a vehicle cylinder liner having excellent wear resistance and heat resistance using the aluminum alloy. The method of manufacturing a vehicle cylinder liner includes the steps of: adding 50˜500 ppm of phosphorus (P) to the aluminum alloy while maintaining a temperature of the aluminum alloy at 700˜800° C. in a holding furnace, stabilizing the molten aluminum alloy including the phosphorus (P) for 30˜60 minutes to reform the molten aluminum alloy, and then continuous-casting the reformed molten aluminum alloy to form a round bar; hot-forging the round bar to forming a cylindrical liner; and machining an internal surface of the cylinder liner, with which a reciprocating piston comes into contact, to allow silicon particles to protrude.
    Type: Application
    Filed: December 7, 2009
    Publication date: December 30, 2010
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Young Gi Kim, Seok Jun Kim, Hoon Mo Park
  • Publication number: 20100307712
    Abstract: A process for producing a copper alloy material from a copper alloy of a precipitation reinforced type, which contains a process to perform individually a dissolution of a pure copper and a dissolution of an additional element or a mother alloy containing the same, comprises the steps of: melting an element and/or a mother alloy at a same time, that is selected from a Ni, a Co, an Si, a Ni—Cu mother alloy, a Co—Cu mother alloy, an Si—Cu mother alloy, a Ni—Si—Cu mother alloy, and a Co—Si—Cu mother alloy with combining therebetween, and melting thereof with an assistance of a generation of a heat of mixing, in a case of forming a high density melt containing at least either one of the Ni or the Co, and the Si, as high density thereof; forming the high density melt as a content of the Ni to be 80 mass % at maximum; and forming an alloy molten metal having a predetermined component and concentration, by adding the melt into a pure copper molten metal to be supplied from another melting furnace.
    Type: Application
    Filed: November 28, 2008
    Publication date: December 9, 2010
    Inventors: Hirokazu Yoshida, Tsukasa Takazawa, Toshio Abe, Shuji Tomimatsu
  • Publication number: 20100278684
    Abstract: The invention relates to a process for manufacturing a semi-finished product made of stabilized stainless steel, which includes a casting step by means of a hollow jet nozzle placed between a tundish and a continuous casting mould. The nozzle comprises, in its upper part, a distributing member for deflecting the liquid metal arriving at the inlet of the nozzle, thus defining an internal volume with no liquid metal in the hollow jet. A non-stabilized stainless steel containing no nitride, carbide and carbonitride precipitates, is delivered in liquid metal form into the tundish. The liquid metal is cast by means of the nozzle, simultaneously carrying out an addition of metal powder into an internal volume of the hollow jet. The metal powder contains at least one element for stabilizing the stainless steel, the addition being carried out at a temperature between Tliquidus+10° C. and Tliquidus+40° C.
    Type: Application
    Filed: September 23, 2008
    Publication date: November 4, 2010
    Applicant: ARCELORMITTAL-STAINLESS FRANCE
    Inventors: Jean-Michel Damasse, Paul Naveau
  • Publication number: 20100132913
    Abstract: In a casting method, or a casting system for aluminum, or aluminum alloys, aluminum melt is filled into a plurality of pans (15, 15?). Said pans (15, 15?) are used for treatment, if needed, and delivered to a casting station (20), in which they are subsequently emptied, and the melt is casted into semi-finished products. At least two filled pans (15, 15?) are provided in order to ensure a continuous casting operation in the casting station (20), the melt of at least one of which is drained into a mutual inflow channel (27).
    Type: Application
    Filed: April 14, 2008
    Publication date: June 3, 2010
    Inventor: Pierre Gerber
  • Publication number: 20100086431
    Abstract: The present invention provides a non-aging enameling steel sheet having excellent fishscale resistance characteristics that is suitable for one-coat enameling and a method of producing the same. The enameling steel sheet comprises, in mass %, C: 0.010% or less, Mn: 0.03% to 1.30%, Si: 0.100% or less, Al: 0.010% or less, N: 0.0055% or less, P: 0.035% or less, S: 0.08% or less, O: 0.005% to 0.085%, Nb: 0.055% to 0.250%, and the balance of Fe and unavoidable impurities, in which steel sheet preferably an Fe—Nb—Mn system composite oxide is present, a distribution of Nb mass % concentrations is present in the composite oxide, and the ratio of Nb mass % concentration of a high-concentration portion (Nb max %) to Nb mass % concentration of a low-concentration portion (Nb min %) is Nb max %/Nb min % ?1.2.
    Type: Application
    Filed: August 13, 2007
    Publication date: April 8, 2010
    Inventors: Hidekuni Murakami, Satoshi Nishimura
  • Publication number: 20090288799
    Abstract: A method of production of an ultralow carbon cast slab characterized by adding Ti to molten steel decarburized to a carbon concentration of 0.01 mass % or less, further adding at least one of Ce, La, and Nd, and using an immersion nozzle to inject the above molten steel from a tundish to a casting mold for continuous casting while maintaining a flow rate of Ar gas blown from any location in a range from a tundish upper nozzle to discharge ports of said immersion nozzle at 3 Nl (normal liter)/min or less.
    Type: Application
    Filed: October 27, 2006
    Publication date: November 26, 2009
    Inventors: Masafumi Miyazaki, Akihiro Matsuzawa, Katsuhiro Sasai, Wataru Ohashi, Yasuhiko Ohtani, Katsunori Yamada, Masahiro Doki, Go Hirata, Yoshiaki Kimura, Hajime Hasegawa
  • Publication number: 20090223603
    Abstract: Disclosed is a method for manufacturing ferritic stainless steel slabs with equiaxed grain structures and the ferritic stainless steel manufactured by it, which control concentration of alumina inclusions in molten steel to maximize an available TiN generation effect serving as a non-uniform nucleating site of ferrite when solidifying it, thereby improving equiaxed crystal ratio, the method comprising the steps of: performing oxygen decarburization reaction by blowing oxygen from the upper part of the molten steel in a vacuum oxygen decarburization ladle; injecting Al in the molten steel to which the oxygen decarburization reaction is made for Cr2O3 reduction; making composite deoxidation by injecting deoxidizer in the molten steel into which the Al is injected for the Cr2O3 reduction; making alloying process by injecting alloying metal in the molten steel; first judging for judging whether Al concentration is in the range of a setting value by analyzing the Al concentration in the molten steel; if the Al con
    Type: Application
    Filed: November 9, 2006
    Publication date: September 10, 2009
    Inventors: Joo-Hyun Park, Hyo-Seok Song, Hee-Ho Lee, Dong-Sik Kim, Kyo-Soo Lee
  • Patent number: 7575135
    Abstract: An immersion nozzle for continuous casting of steel supplies molten steel into a mold. At least a part of the immersion nozzle is formed of a refractory having a desulfurizing ability. A method for continuous casting of steel employs the immersion nozzle to supply molten steel into a mold using the immersion nozzle for continuous casting.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: August 18, 2009
    Assignee: JFE Steel Corporation
    Inventors: Yutaka Awajiya, Mikio Suzuki, Keiji Watanabe, Makoto Iiyama
  • Publication number: 20090165987
    Abstract: The present invention relates to a continuous casting machine and method using molten mold flux. The continuous casting machine includes a mold cover for covering an upper portion of a mold; a mold flux melting unit for melting mold flux to be supplied into the mold; and a mold flux delivery unit for supplying the mold with the molten mold flux melted in the mold flux melting unit, wherein the delivery unit includes an injection tube with one end connected to the mold flux melting unit and the other end positioned in the mold through the mold cover, and an injection tube heater for heating the injection tube. According to the present invention, since a slag bear continuous casting machine and method using molten mold flux is removed, a consumption of mold flux is greatly increased compared with a case of a conventional casting work, so that the friction between a mold and a solidified shell is reduced. As a result, an amount of scarfing of a cast piece is greatly reduced and no carbon pick-up occurs.
    Type: Application
    Filed: June 22, 2007
    Publication date: July 2, 2009
    Inventors: Jung Wook Cho, Hyun Seok Jeong, Jong Min Park, Goo Hwa Kim, Oh Duck Kwon, Joong Ki Park, Soo Kyu Lee, Sang Ho Lee, Ki Hyeon Moon
  • Publication number: 20090047168
    Abstract: The present invention provides a continuously cast enameled steel sheet with remarkably excellent fishscale resistance improving the ability to form spaces in the steel sheet so as to increase the hydrogen trap ability, and a method of production of the same, comprised of steel having as ingredients, by mass %, C: 0.010% or less, Mn: 0.03 to 1.30%, Si: 0.100% or less, Al: 0.030% or less, N: 0.0055% or less, P: 0.035% or less, S: 0.08% or less, O: 0.005 to 0.085%, and B: 0.0003 to 0.0250% and including in the steel sheet not integral or integral oxides differing in mass concentration of B or Mn. The ratio of the maximum concentration and minimum concentration is made 1.2 or more. When not integral, they are present with a straight line distance between centers of the oxides differing in concentration of 0.10 ?m to 20 ?m and with an angle of the line connecting the centers of the two oxides of within ±10° from the rolling direction.
    Type: Application
    Filed: November 9, 2006
    Publication date: February 19, 2009
    Inventors: Hidekuni Murakami, Satoshi Nishimura
  • Publication number: 20080149298
    Abstract: The present invention provides a low carbon steel sheet and a low carbon steel slab on which formation of surface defects can be surely prevented by preventing aggregation of inclusions in the molten steel and finely dispersing inclusions in the steel sheet or slab, and a process for producing the steel sheet and slab. The present invention provides a process comprising the steps of decarburizing a molten steel so as to produce a carbon concentration of up to 0.01% by mass, pre-deoxidizing the molten steel by adding Al thereto so as to produce a dissolved oxygen concentration from 0.01 to 0.04% by mass, adding thereto Ti and at least La and/or Ce, and casting the molten steel, and a steel sheet and a steel slab obtained by the process.
    Type: Application
    Filed: February 15, 2008
    Publication date: June 26, 2008
    Applicant: Nippon Steel Corporation
    Inventors: Katsuhiro Sasai, Wataru Ohashi, Tooru Matsumiya, Yoshiaki Kimura, Junji Nakashima
  • Patent number: 6581674
    Abstract: Disclosed is a method and apparatus for making a molten film of metal, steel, in particular a steel film, more uniform, by strip casting, in which the molten material which is applied to a revolving belt is to have a thickness and properties which are as uniform as possible across the width of the strip. To make the strip more uniform over its width, forces are introduced into the metal film with a component which is perpendicular to the direction in which the strip is conveyed, which forces make the profile of the molten film of metal more uniform.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: June 24, 2003
    Assignees: SMS Demag AG, Salzgitter AG
    Inventors: Joachim Kroos, Karl-Heinz Spitzer, Ulrich Urlau
  • Publication number: 20030085020
    Abstract: A process for casting and preparing an ingot of a beta-phase NiAl-based material, particularly for use in PVD coating processes. The method entails melting a nickel-aluminum composition having an aluminum content below that required for stoichiometric beta-phase NiAl intermetallic so as to form a melt comprising nickel and Ni3Al. Aluminum is then added to the melt, causing an exothermic reaction between nickel and aluminum as the melt equilibrium shifts from Ni3Al to NiAl. However, the aluminum is added at a rate sufficiently low to avoid a violent exothermic reaction. The addition of aluminum continues until sufficient aluminum has been added to the melt to yield a beta-phase NiAl-based material. The beta-phase NiAl-based material is then solidified to form an ingot, which is then heated and pressed to close porosity and homogenize the microstructure of the ingot.
    Type: Application
    Filed: November 7, 2001
    Publication date: May 8, 2003
    Inventors: Ramgopal Darolia, Joseph David Rigney
  • Patent number: 6557623
    Abstract: Molten steel is poured using an immersion nozzle and a direct current magnetic field zone is applied to a cast slab over the entire width in the thickness direction thereof at a predetermined distance below the molten metal level in a continuously-casting mold. The immersion nozzle is provided with ejection holes located in at least upper and lower stages, at least one lower ejection hole is disposed such that these satisfy the following formula (1). The supply rate of molten steel from the upper ejection holes is set smaller than the rate consumed by solidification in an upper pool, and a particular solute element is added to the molten steel in the upper pool. 0<h<(½)·w·tan &thgr;  (1) where, &thgr;: downward angle of lower ejection hole(s) (°); w: length of mold in width direction (m); and h: distance from center of lower ejection hole to center of height of magnetic pole (m).
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: May 6, 2003
    Assignee: Kawasaki Steel Corporation
    Inventors: Hiromitu Shibata, Yasuo Kishimoto, Shuji Takeuchi, Koji Yamaguchi
  • Patent number: 6516870
    Abstract: A process for continuously casting steel wherein liquid steel is teemed from a ladle through a shroud into the pour box section of a tundish and poured from the tundish through one or more outlets remote from the pour box, and wherein the surface of the steel in the tundish is covered with a first flux in the area of the pour box and with a second flux in the remaining areas of the tundish. The flux used in the pour box area has a higher melting temperature than the flux used in the remaining areas. Preferably all fluxes used are basic fluxes containing CaO and Al2O3.
    Type: Grant
    Filed: May 15, 2000
    Date of Patent: February 11, 2003
    Assignee: National Steel Corporation
    Inventor: Sanjib Chakraborty
  • Patent number: 6412164
    Abstract: Aluminum alloy compositions are disclosed, which include small amounts of calcium that result in improved surface properties of the cast aluminum. The calcium, and up to 0.25% grain refiners, are added along with alkaline earth metals, transition metals and/or rare earth metals to the aluminum alloy as a melt. The addition results in improved appearance, substantially reduced surface imperfections and reduced surface oxidation in cast ingot aluminum and aluminum alloys. The addition of small amounts of these additives, surprisingly were found to substantially eliminate vertical folds, pits and ingot cracking in more than one ingot casting technique. The additions also improved the appearance of the ingots, including reflectance. As a result, the ingots could be reduced or worked essentially right out of the casting without first conditioning the surface by, for example, scalping.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: July 2, 2002
    Assignee: Alcoa Inc.
    Inventors: David H. DeYoung, William F. McGinnis, Ray T. Richter, Jeffrey J. Wiesner
  • Publication number: 20020017374
    Abstract: A method and apparatus for the direct production, from molten metal, of scale-free thin metal strip. Hot thin metal strip exiting a continuous caster system is directed to a reducing chamber wherein a reducing gas reduces strip surface oxides while the cast metal strip is at an elevated temperature from retained heat from the molten metal. A cooling unit following the reducing chamber is used to cool the strip to a temperature below about 150° C. prior to exposing the strip to an oxidizing atmosphere. In various embodiments of the invention, strip thickness is reduced with use of hot and cold rolling mills and the scale-free surface of the strip is coated with protective coatings.
    Type: Application
    Filed: August 21, 2001
    Publication date: February 14, 2002
    Applicant: Danieli Technology, Inc.
    Inventor: Stephen L. Feldbauer
  • Patent number: 6316125
    Abstract: The invention provides a new and improved process and exothermic reaction mixture for producing molten weld metal. The molten weld metal is used in joining one metallic piece with at least one other metallic piece. The process and exothermic reaction mixture have distinct advantages over the prior art. These advantages include a higher filler metal yield, an increased tensile strength, and a higher quality corrosion resistant weld. These advantages are accomplished by a process wherein a reactant mixture is provided which has a reducing agent, a metallic compound, and at least two filler metals that at least in part do not chemically react with the metallic compound, one of which is aluminum. The metallic compound subsequently forms, with the reducing agent, having a high heat of formation which provides an exothermic reaction with sufficient heat to melt the filler metals.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: November 13, 2001
    Assignee: Erico International Corporation
    Inventors: Nicolae Gaman, Harrie van den Nieuwelaar
  • Patent number: 6217632
    Abstract: A method of grain refining aluminum, the method comprising providing a molten aluminum body containing at least one of the metals selected from the group consisting of titanium, zirconium, vanadium, molybdenum, manganese, silicon, tungsten, tantalum, niobium and beryllium. A material reactive with the titanium is introduced preferably in gaseous form to the aluminum body. The material has a component selected from the group consisting of boron, carbon, sulfur, nitrogen and phosphorus. The material and said metal form a grain refining compound adapted for grain refining the aluminum.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: April 17, 2001
    Inventor: Joseph A. Megy
  • Patent number: 6171362
    Abstract: A method for refining molten Al alloy and a non-halogen based flux for refining molten Al alloy which make it possible to perform refining such as removal of gas and inclusions at a high reduction level, and are free from a problem that the flux remains in the molten Al alloy, wherein a refining flux is injected into molten Al alloy obtained by melting an Al raw material to refine the melt, thereafter, the resultant is supplied to a mold, so as to cast the Al alloy. At this time, alum is used as the refining flux.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: January 9, 2001
    Assignee: Kobe Steel, Ltd
    Inventors: Kenji Osumi, Takayuki Kitano, Kazuhisa Fujisawa
  • Patent number: 6125919
    Abstract: A mold powder for continuous steel casting, contains CaO, SiO.sub.2 and fluoride as the main components. The ratio by weight of CaO', represented by the following equation, to SiO.sub.2 is 0.9-2.8 and the CaF.sub.2 content is about 5-60 wt. %. The powder contains Na.sub.2 O in an amount of 0-25 wt. % and C in an amount of 0-10 wt. %.CaO'=T.CaO-F.times.(56/38)wherein T.CaO represents the total Ca content in the mold powder as converted to CaO(wt. %) and F represents the total F content in the mold powder(wt. %). The powder is used in a method for continuous steel casting.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: October 3, 2000
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Masahito Hanao, Masayuki Kawamoto, Yoshinori Tanizawa, Seiji Kumakura
  • Patent number: 6073679
    Abstract: Continuous casting of steel strip in twin-roll caster comprises casting rolls (16). Molten steel is delivered by a delivery system and comprising delivery nozzle (19b) to casting pool (30) supported above nip (10) between the casting rolls (16) which are rotated to deliver a solidified strip (20) downwardly from the nip. To avoid dissolution of carbon from refractories of the metal delivery system including the nozzle (19b), the molten steel is a silicon/manganese killed carbon steel having a manganese content of not less than 0.02% by weight, a silicon content of not less than 0.10% by weight, an aluminium content of less than 0.01% by weight and a sulphur content of at least 0.02% by weight. The required sulphur content of the steel may be achieved by addition of iron sulphide to a batch of steel in a tundish (18) of the delivery system.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: June 13, 2000
    Assignees: Ishikawajima-Harima Heavy Industries Ltd. Company Limited, BHP Steel (JLA) Pty. Ltd.
    Inventor: Lazar Strezov
  • Patent number: 6044897
    Abstract: A process for increasing the productivity of aluminum castings from a hot chamber die casting machine, as well as a process for increasing the working life of an injection chamber for use in a hot chamber aluminum die casting machine, both of which involve the use of a passivated aluminum alloy in the machine. In the preferred embodiment, the process involves the use of an aluminum alloy which is passivated through the introduction of an amount of TiBr.sub.2, provided in amounts sufficient to retard corrosion of the steel of the hot chamber casting machine.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: April 4, 2000
    Inventor: Raymond E. Cross