Inorganic Patents (Class 148/26)
-
Patent number: 4345140Abstract: A composite wire containing a flux for use in gas-shielded arc welding of stainless steels which contains, in the flux, the following inorganic components with respect to the total weight of the wire: 0.1 to 10% by weight of an anhydrous silicate, and 0.01 to 0.75% of a metallic oxide having a melting point of no more than 888.degree. C.Type: GrantFiled: June 19, 1980Date of Patent: August 17, 1982Assignee: Kobe Steel, Ltd.Inventors: Tomokazu Godai, Shoji Minato, Katushi Nishimura, Tsuneshi Ogawa
-
Patent number: 4339286Abstract: A core flux composition of a flux-cored wire for welding and surfacing high-strength steels with a gas-shielded process comprises the core flux ingredients taken in the following amounts, by weight %:______________________________________ rutile concentrate 14.0-23.0 fluorite concentrate 7.0-12.0 sodium fluosilicate 2.0-6.0 ferromanganese 6.0-10.0 ferrosilicon 1.5-4.0 ferromolibdenum 1.0-2.5 chromium (elemental) 1.0-2.5 nickel (elemental) 4.0-9.0 iron powder 31.0-63.Type: GrantFiled: May 27, 1980Date of Patent: July 13, 1982Inventors: Boris S. Kasatkin, Igor K. Pokhodnya, Valentin F. Musiachenko, Vladimir N. Golovko, Ljudmila N. Kolomiets, Jury A. Simonenko, Anatoly V. Gulyar
-
Patent number: 4338142Abstract: A melting flux composition for submerged arc welding which comprises 6-15% by weight of MgO, 5-10% by weight of CaO, 10-20% by weight of CaF.sub.2, 14-19% by weight of Al.sub.2 O.sub.3, 20-25% by weight of TiO.sub.2, 15-20% by weight of SiO.sub.2, and 5-10% by weight of MnO. Optionally, the composition further comprises B.sub.2 O.sub.3 or other oxide components, such as iron oxide and alkali metal oxides.Type: GrantFiled: January 19, 1981Date of Patent: July 6, 1982Assignee: Kobe Steel, LimitedInventors: Naoki Okuda, Kazuo Tanaka
-
Patent number: 4317688Abstract: Core flux composition of a flux-cored wire for welding and surfacing steels with a gas-shielded process contains the core flux ingredients in the following amounts, by weight %:______________________________________ rutile concentrate 20-40 fluorite concentrate 0.6-8.5 ferromanganese 13.5-18.5 ferrosilicon 1.6-2.7 nepheline concentrate 0.5-7 cryolite 0.6-4.Type: GrantFiled: July 9, 1980Date of Patent: March 2, 1982Inventors: Igor K. Pokhodnya, Vladimir N. Golovko
-
Patent number: 4314136Abstract: In a tubular composite electrode for depositing stainless steel weld metal, satisfactory performance in vertical up welding is achieved through the inclusion in the electrode core of a slag mix comprising 15 to 60% weight percent zirconium dioxide.Type: GrantFiled: April 16, 1980Date of Patent: February 2, 1982Assignee: Teledyne Industries, Inc.Inventor: Damian J. Kotecki
-
Patent number: 4306920Abstract: Flux composition for a flux-cored wire to be used for welding and surfacing steels with the gas-shielded process comprises flux ingredients in the following amounts, by weight %:rutile concentrate: 20-53ferromanganese: 10-22.8ferrosilicon: 1.3-6sodium fluosilicate: 1-5calcined magnesite: 1.3-10electrocorundum: 1.6-7.5iron powder: balance.Type: GrantFiled: August 5, 1980Date of Patent: December 22, 1981Inventors: Igor K. Pokhodnya, Vladimir N. Golovko
-
Patent number: 4244506Abstract: A process for recovery of salts from a rinse liquid solution used to rinse salt flux from a metallurgical joining operation is disclosed in which process soluble flux salts are dissolved in the rinse liquid solution while other insoluble salts are dispersed therein. The process comprises collecting the rinse liquid solution; removing undissolved solids from the solution; concentrating the remaining solution by removal of liquid to provide a slurry; subjecting the slurry to a drying operation to remove the balance of the liquid; and recovering the residue. In a preferred embodiment, the residue is analyzed and sufficient metal salts are added to restore the residue to a desired salt flux composition for reuse.Type: GrantFiled: November 26, 1979Date of Patent: January 13, 1981Assignee: Aluminum Company of AmericaInventors: John J. Stokes, Jr., Robert A. Cargnel, James H. Crooks
-
Patent number: 4224086Abstract: A dip brazing flux for brazing alluminum alloy surfaces is disclosed comprising CaCl.sub.2, NaCl, KCl and AlF.sub.3 characterized by a low formation of CaF.sub.2 when the flux is maintained in a molten condition.Type: GrantFiled: May 17, 1979Date of Patent: September 23, 1980Assignee: Aluminum Company of AmericaInventors: John J. Stokes, Jr., James H. Crooks
-
Patent number: 4221611Abstract: Non-Fused flux composition particularly suitable for horizontal submerged-arc welding in production of welded structures such as storage tanks and pressure vessels, comprising 13 to 30% TiO.sub.2, 5 to 50% CaF.sub.2, 20 to 40% MgO, 12 to 30% Al.sub.2 O.sub.3, 2 to [20-(% CaF.sub.2).div.3]% SiO.sub.2, 0.1 to 1.0% B.sub.2 O.sub.3, and providing good low temperature fracture toughness of weld metal.Type: GrantFiled: November 16, 1978Date of Patent: September 9, 1980Assignee: Nippon Steel CorporationInventors: Kyoichi Nagano, Toshihiko Takami, Kunio Koyama
-
Patent number: 4220487Abstract: A gelatinous coating comprising particles of electrode coating and thermite suspended in a gel for use as an insulating coating and fluxing agent in underwater arc welding. Also, a method for underwater welding in which the gelatinous coating is scorched and the electric arc is initiated and sustained so as to weld the workpiece. Alternatively, a method for arc welding in flammable or explosive atmospheres.Type: GrantFiled: October 25, 1978Date of Patent: September 2, 1980Inventor: Leonard M. Andersen
-
Patent number: 4214141Abstract: A submerged arc welding method and more specifically, a multiple electrode welding method is disclosed wherein welding is performed by arranging electrodes in such a manner that the distance becomes at least 300 mm between a first molten pool formed by multilayer welding or by a single or plural electrodes preceding along the weld line and a subsequent molten pool formed by a single subsequent electrode or plural subsequent electrodes, as well as a submerged arc welding method which is characterized in that there is formed a slag having the components listed below on the weld metal formed by an electrode or a preceding electrode forming a preceding layer, and welding is carried out as such, without removing the slag, using an electrode or a subsequent electrode forming a subsequent layer;TiO.sub.2 : 20-65% by weight (up to 60% by weight, based on the total TiO.sub.2 amount, of which may be substituted by ZrO.sub.2);CaF.sub.2 : 9.6-40% by weight, andAl.sub.2 O.sub.3 : 10-56% by weight.Type: GrantFiled: December 29, 1978Date of Patent: July 22, 1980Assignee: Kobe Steel, Ltd.Inventors: Naoki Okuda, Akira Nakano
-
Patent number: 4207121Abstract: A fused flux for use especially in submerged arc welding of high strength, low-alloy pipe steels, characterized in that the flux is amorphous and nonpowdery and capable of producing low oxygen content weld metal having a high impact strength even at low temperature, the flux containing: 20-60 wt. % CaO; 15-55 wt. % SiO.sub.2 ; 5-10 wt. % CaF.sub.2 ; 5-15 wt. % TiO.sub.2 ; 0-5 wt. % Al.sub.2 O.sub.3 ; 3-15 wt. % Na.sub.3 AlF.sub.6 ; and 5-30 wt. % MgO.Type: GrantFiled: December 6, 1978Date of Patent: June 10, 1980Assignee: Union Carbide CorporationInventor: Masahiro Nakabayashi
-
Patent number: 4204889Abstract: The soft soldering of an aluminium or aluminium-based alloy member to another member of a metal or alloy capable of being soft soldered to aluminium at a joint site is effected using a lead/tin soft solder alloy in conjunction with a flux containing as one of the essential constituents a silver halide so that sufficient silver is deposited with the soft solder alloy at the joint site to prevent corrosion of the joint.Type: GrantFiled: September 13, 1978Date of Patent: May 27, 1980Assignee: Multicore Solders LimitedInventors: Bernard M. Allen, Wallace Rubin, Brian Watson
-
Patent number: 4205218Abstract: A covered electrode for arc welding is disclosed which exhibits tight adhesion between the cover material and the core wire and provides good arc stability. This covered electrode comprises a core wire coated with a coating composition comprising (a) a powdered mixture of an inorganic oxide, carbonate and fluoride, (b) an alkali silicate and (c) 0.001 to 5.0% by weight of pullulan based on the alkali silicate.Type: GrantFiled: March 27, 1978Date of Patent: May 27, 1980Assignees: Sumitomo Chemical Company, Limited, Hayashibara Biochemical Laboratories, Inc.Inventors: Kousuke Fukami, Masanori Fujimoto, Fumio Fujita, Tsuneyuki Nagase
-
Patent number: 4172162Abstract: Introduction of boron as a hardening agent for metal hard-facing and the like is achieved by way of welding practices involving a consumable slender rod or wire filler member of relatively ductile material into the surface of which boron has been diffused to leave relatively brittle boride about a relatively ductile core, the slender borided welding filler member lending itself to uncomplicated handling because of core ductility while at the same time exhibiting a high percentage of borided material from which a hard facing can be developed when it is melted and bonds with metal of a body which is to be hard-faced.Type: GrantFiled: June 25, 1976Date of Patent: October 23, 1979Assignee: Materials Development CorporationInventor: Lee B. Danzey, Jr.
-
Patent number: 4158710Abstract: The work-pieces are mechanically cleaned, degreased and washed, and then etched in an aqueous solution containing 0.5-1.0% by weight of citric acid, and 16-24% by weight of hydrochloric acid, having a temperature of 15.degree.-30.degree. C., preferably of 20.degree.-25.degree. C., for the time of 1-20 minutes, preferably 2-5 minutes, whereafter the work-pieces are neutralized in an aqueous ammonia solution having a concentration not exceeding 1% by weight, at a temperature of 15.degree.-25.degree. C., in a time not shorter than 1 minute. After being washed in water at a temperature not exceeding 35.degree. C. in a time not shorter than 1 minute, they are dipped in an agitated aqueous solution of the flux, containing 1.8-2.5% by weight of potassium fluoride, 0.8-1.5% by weight of sodium fluoride, and 1.5-3.0% by weight of potassium fluorozirconate, having a temperature of 40.degree.-80.degree. C.Type: GrantFiled: December 29, 1977Date of Patent: June 19, 1979Assignee: Politechnika Slaska im. Wincentego PstrowskiegoInventors: Adam Gierek, Lech Bajka, Danuta Adamczyk
-
Patent number: 4140821Abstract: A process for simultaneously preheating and preparing a ferrous surface, prior to the depositing thereon of galvanized zinc coatings, replaces conventional fluxing techniques with the step of immersing a ferrous object in a bath of a molten salt or salts. The salts are chosen so that they are liquid at a temperature below that of the zinc coating step. The liquid acts as a non-fuming flux and preheat for the surface. Particular salts include metallic hydroxides and halides.Type: GrantFiled: March 5, 1976Date of Patent: February 20, 1979Assignee: International Lead Zinc Research Organization, Inc.Inventors: Schrade F. Radtke, David C. Pearce
-
Patent number: 4131493Abstract: The flux-cored welding wire is intended to inert-gas shielded fusion welding of titanium and its alloys and includes a metal coating or tubular casting of titanium or its alloys and a powder flux core containing (per cent by weight):BaF.sub.2 -- 5 to 10,Fluoride of a rare-earth element -- 18 to 20,CaF.sub.2 -- 40 to 50,SrF.sub.2 -- the rest,the ratio of the weight content of the powder flux to the total weight content of titanium in the wire being from 0.3:1 to 1:1.Type: GrantFiled: December 20, 1974Date of Patent: December 26, 1978Inventors: Samuil M. Gurevich, Vadim N. Zamkov, Valery P. Prilutsky
-
Patent number: 4131784Abstract: The present invention relates to a coated welding electrode containing at least 0.5% of Cr based on the total weight of the welding electrode and comprising a metal core and a coating flux composition. In this welding electrode, the content of Na and K components in the coating flux calculated as (Na.sub.2 O + K.sub.2 O) is reduced below 1% based on the total weight of the coating flux composition, whereby amounts of fumes generated at the welding step, especially the amount of toxic soluble Cr, are suppressed and minimized.Type: GrantFiled: March 23, 1977Date of Patent: December 26, 1978Assignee: Kobe Steel, Ltd.Inventors: Shinji Kimura, Tomokazu Godai, Shoji Minato, Minoru Kobayashi, Makoto Yamaga, Shingo Maki, Yoshizo Hashimoto, Tetsuo Suga, Hiroshi Saita
-
Patent number: 4119262Abstract: A method of brazing metal, particularly aluminum members, is disclosed which employs gaseous bromine as a fluxing agent. The fluxing agent is introduced as an additive to a through-flowing protective or inert atmosphere in the brazing furnace.Type: GrantFiled: July 5, 1977Date of Patent: October 10, 1978Assignee: Ford Motor CompanyInventors: Chia-Ming Yen, Duane J. Schmatz
-
Patent number: 4109059Abstract: Flux-cored wire as mentioned below, in which a sheath of steel strip is filled with a powder, a selection of iron powders or earth carbonates or fluorides and ferro-metallic deoxidizers and arc stabilizers are added and the mixture is baked at about 570.degree. to 620.degree. C, specific compositions as detailed in the description being used in the powder, the powder specifically having added to it 1 to 3% by weight of powder of atomized silicate, and the sheath being of low-carbon or low-alloy steel, the whole being sifted preferably at 100 mesh.Type: GrantFiled: February 23, 1977Date of Patent: August 22, 1978Assignee: La Soudure Electrique Autogene, Procedes ArcosInventor: Robert De Haeck
-
Patent number: 4087673Abstract: An electrode for and method of welding cast iron and the like metals utilizing a 99% nickel rod in the presence of an alloying flux containing large amounts (30 to 60%) of iron plus manganese and carbon to yield a weld metal having the general composition: Nickel 60-85%, Iron 15-40%, Manganese 1.5-5%, Carbon 1-3% and Silicon 0.25-2%. The flux is preferably present as a rod coating and comprises from about 40% to about 60% of the weight of the composite coated rod. The coated rod can be used in any generally excepted welding technique including the use of alternating current, direct current straight polarity or direct current reverse polarity welding operations.Type: GrantFiled: June 11, 1976Date of Patent: May 2, 1978Assignee: Weld Mold CompanyInventor: Matt Kiilunen
-
Patent number: 4070192Abstract: There is described a composition for soft soldering aluminium or alloys thereof using a fluxed solder composition. The fluxed solder composition comprises a soldering flux suitable for use in soft soldering aluminium and its alloys and a soft solder alloy of lead, tin and silver and, optionally, up to 3% copper.Type: GrantFiled: August 19, 1975Date of Patent: January 24, 1978Assignee: Multicore Solders LimitedInventors: Gordon Francis Arbib, Bernard Michael Allen
-
Patent number: 4066478Abstract: A prefused basic flux composition comprising:______________________________________ SiO.sub.2 about 25 to about 35% Al.sub.2 O.sub.3 about 2 to about 6% TiO.sub.2 about 3 to about 7% CaF.sub.2 about 5 to about 11.25% CaO about 44 to about 52% MgO about 1 to about 10% MnO about 0.5 to about 5% Na.sub.2 O about 4.5 to about 8% K.sub.2 O about 0.5 to about 1.5% FeO 0 to about 2% ______________________________________And wherein the weight ratio of CaO to CaF.sub.2 is equal to or greater than about 4.Type: GrantFiled: December 13, 1976Date of Patent: January 3, 1978Assignee: La Soudure Electrique Autogene, Procedes Arcos, S.A.Inventor: Robert Jean De Haeck
-
Patent number: 4062703Abstract: Zinc ammonium chloride type fluxes can be made that have longer life and reduced smoke characteristics by incorporating 1 to 50% sand into conventional fluxes for use on metal container side seam soldering baths, as well as into galvanizing fluxes.Type: GrantFiled: November 17, 1975Date of Patent: December 13, 1977Assignee: W. R. Grace & Co.Inventor: Joseph Vastag
-
Patent number: 4054776Abstract: A process for the electric arc welding of cast iron, specifically white cast iron, is provided which comprises electrically applying to the cast iron to be welded, at welding temperatures, a welding material obtained by melting a welding rod containing, by weight, from about 2.30 to about 3.00 percent carbon, from about 0.03 to about 0.06 percent chromium, from about 0.01 to about 0.04 percent nickel, about 0.01 percent molybdenum, from about 0.82 to about 0.90 percent manganese, from about 0.023 to about 0.032 percent sulphur, from about 0.103 to about 0.115 percent phosphorus, about 2.64 percent silicon, with the balance being iron plus incidental impurities, with the welding rod having a low hydrogen flux.Type: GrantFiled: September 12, 1975Date of Patent: October 18, 1977Inventor: Patsie Carmen Campana
-
Patent number: 4054773Abstract: A process for the electric arc welding of cast iron, specifically white cast iron, is provided which comprises electrically applying to the cast iron to be welded, at welding temperatures, a welding material obtained by simultaneously melting a first and a second welding rod; the first welding rod containing, by weight, about 0.085 to about 0.095 percent carbon, about 0.0285 to about 0.0315 percent chromium, about 0.0095 to about 0.0105 percent nickel, about 0.0095 to about 0.0105 percent molybdenum, about 0.618 to about 0.672 percent manganese, about 0.01615 to about 0.01785 percent sulphur, about 0.01805 to about 0.01995 percent phosphorus, about 2.50 percent silicon, with the balance being iron plus incidental impurities, the first welding rod being provided with a low hydrogen fluxing material; the second welding rod containing, by weight, from about 2.35 to about 2.75 percent carbon, from about 0.01 to about 0.03 percent chromium, from about 0.20 to about 0.50 percent nickel, from about 0.08 to about 0.Type: GrantFiled: September 12, 1975Date of Patent: October 18, 1977Inventor: Patsie Carmen Campana
-
Patent number: 4054774Abstract: A process for the electric arc welding of cast iron, specifically malleable cast iron, is provided which comprises electrically applying to the cast iron to be welded, at welding temperatures, a welding material obtained by simultaneously melting a first and a second welding rod; the first welding rod containing, by weight, about 0.085 to about 0.095 percent carbon, about 0.0285 to about 0.0315 percent chromium, about 0.0095 to about 0.0105 percent nickel, about 0.0095 to about 0.0105 percent molybdenum, about 0.618 to about 0.672 percent manganese, about 0.01615 to about 0.01785 percent sulphur, about 0.01805 to about 0.01995 percent phosphorus, about 2.50 percent silicon, with the balance being iron plus incidental impurities, the first welding rod being provided with a low hydrogen fluxing material; the second welding rod containing, by weight, from about 1.40 to about 2.20 percent carbon, about 0.04 percent chromium, from about 0.60 to about 1.00 percent nickel, about 0.Type: GrantFiled: September 12, 1975Date of Patent: October 18, 1977Inventor: Patsie Carmen Campana
-
Patent number: 4054775Abstract: A process for the electric arc welding of cast iron, specifically gray cast iron, is provided which comprises electrically applying to the cast iron to be welded, at welding temperatures, a welding material obtained by simultaneously melting a first and a second welding rod; the first welding rod containing, by weight, about 0.085 to about 0.095 percent carbon, about 0.0285 to about 0.0315 percent chromium, about 0.0095 to about 0.0105 percent nickel, about 0.0095 to about 0.0105 percent molybdenum, about 0.618 to about 0.672 percent manganese, about 0.01615 to about 0.01785 percent sulphur, about 0.01805 to about 0.01995 phosphorus, about 2.50 percent silicon, with the balance being iron plus incidental impurities, the first welding rod being provided with a low hydrogen fluxing material; the second welding rod containing, by weight, from about 2.60 to about 2.85 percent carbon, about 0.01 percent chromium, from about 0.10 to about 0.30 percent nickel, from about 0.05 to about 0.Type: GrantFiled: September 12, 1975Date of Patent: October 18, 1977Inventor: Patsie Carmen Campana
-
Patent number: 4054777Abstract: A process for the electric arc welding of cast iron, specifically ductile cast iron, is provided which comprises electrically applying to the cast iron to be welded, at welding temperatures, a welding material obtained by simultaneously melting a first and a second welding rod; the first welding rod containing, by weight, about 0.085 to about 0.095 percent carbon, about 0.0285 to about 0.0315 percent chromium, about 0.0095 to about 0.0105 percent nickel, about 0.0095 to about 0.0105 percent molybdenum, about 0.618 to about 0.672 percent manganese, about 0.01615 to about 0.01785 percent sulphur, about 0.01805 to about 0.01995 percent phosphorus, about 2.50 percent silicon, with the balance being iron plus incidental impurities, the first welding rod being provided with a low hydrogen fluxing material; the second welding rod containing, by weight, about 2.85 percent carbon, about 0.01 percent chromium, about 0.10 percent nickel, about 0.05 percent molybdenum, about 0.50 percent manganese, about 0.Type: GrantFiled: September 12, 1975Date of Patent: October 18, 1977Inventor: Patsie Carmen Campana
-
Patent number: 4042731Abstract: A process which involves galvanizing with a galvanizing flux consisting essentially of a fluxing material selected from zinc ammonium chloride double salt and a mixture of zinc chloride and ammonium chloride and, as a foaming agent, sorbitol by dipping a metal article into a molten bath of zinc covered by said flux.Type: GrantFiled: November 6, 1975Date of Patent: August 16, 1977Assignee: E. I. Du Pont de Nemours and CompanyInventor: Dong Myung Chay
-
Patent number: 4036671Abstract: Flux for welding ordinary, semi-alloyed, alloyed or special steels with a high rate of efficiency and high rate of speed and containing a relatively high amount of Fe powder.Type: GrantFiled: April 13, 1976Date of Patent: July 19, 1977Assignee: La Soudure Electrique Autogene, Procedes Arcos, S.A.Inventor: Robert Jean De Haeck
-
Patent number: 4017339Abstract: A flux for use in submerged arc welding of steel, is formed from 10 - 70% iron powder, 10 - 50% MgO, 3 - 25% CaO, 2 - 25% carbonate based on the CO.sub.2 content, 0.03 - 1.5% of a compound or mixture containing boron oxide, the weight being based on the B.sub.2 O.sub.3 content, less than 15% TiO.sub.2, and at least one deoxidizing metallic agent selected from the group consisting of Si, Mn, Al, Ti and alloys thereof.Type: GrantFiled: November 29, 1974Date of Patent: April 12, 1977Assignee: Kobe Steel Ltd.Inventors: Naoki Okuda, Kazuo Tanaka
-
Patent number: 4016399Abstract: Flux-cored wire for automatic or semi-automatic arc welding process, comporting specific powder compositions as detailed in the description, which are high in amounts of metallic powders, mixed with metallic silicate solution to form a paste and baked before its introduction within a low-carbon or low-alloy steel sheath.Type: GrantFiled: June 17, 1975Date of Patent: April 5, 1977Assignee: La Soudure Electrique Autogene, Procedes ArcosInventor: Robert De Haeck
-
Patent number: 4010309Abstract: Directed to a welding flux and covered welding electrodes, and, more particularly, to covered electrodes having a nickel-chromium-iron alloy core and a special flux coating or covering, which electrode is capable of joining similar and dissimilar metals and which produces, in all positions, sound welds free from cracking and porosity and deposits having excellent corrosion resistance.Type: GrantFiled: October 30, 1975Date of Patent: March 1, 1977Assignee: The International Nickel Company, Inc.Inventor: Walter Adrian Petersen
-
Patent number: 4010048Abstract: An extremely effective agent for achieving optimum bonding between a nonprecious dental alloy and porcelain is painted onto the alloy in slurry form and fired to prepare the surface of the alloy for bonding to porcelain. The bonding agent includes major proportions of fine gold powder, porcelain, liquid flux and a minor amount of fine zirconium oxide. The liquid flux is a low fusing flux dissolved in a liquid vehicle, such as glycerine or an alcohol. Suitable fluxes are boron oxide and its salts. The flux reacts to the porcelain and with the oxides which are formed on the alloy during firing to produce a low solubility, highly tenacious, adherent intermediate layer of oxides to which porcelain will readily and firmly adhere during subsequent application and firing.Type: GrantFiled: December 24, 1974Date of Patent: March 1, 1977Assignee: Howmedica, Inc.Inventors: John A. Tesk, Henrietta M. Severa, Ronald P. Dudek, Peter Kosmos
-
Patent number: 4003766Abstract: In welding materials, such as a composite electrode enclosing a flux within a tubular hoop, a combination of a solid electrode and a flux, a core electrode coated with a flux and the like, for welding aluminum-coated steel comprising on weight basis less than 1.5% of Si less than 1.0% of Mn, and 2 to 15% of CaF.sub.2 and 15 to 50% of a mixture of oxides having a basicity ranging from 1.0 to 12.5, the balance being substantially Fe.Type: GrantFiled: February 21, 1975Date of Patent: January 18, 1977Assignee: Sumitomo Metal Industries, Ltd.Inventors: Yoshinori Ito, Mutsuo Nakanishi, Masamichi Nakakoji, Masahiko Ikeda, Tadashi Ito
-
Patent number: 3988175Abstract: A reaction type flux and the method utilizing same in the soldering of aluminum containing products, particularly aluminum-zinc coated ferrous sheet and strip products. Said flux comprising a mixture consisting essentially of, parts by weight, 10 to 14 stannous chloride, 0.25 to 1.5 ammonium chloride, and 0.05 to 0.3 sodium fluoride. Such a flux mixture is characterized by a reaction temperature in the anhydrous condition of less than about 470.degree. F., preferably below about 450.degree. F., thereby permitting the application of electric iron techniques in the soldering operation.Type: GrantFiled: August 23, 1974Date of Patent: October 26, 1976Assignee: Bethlehem Steel CorporationInventors: James C. Baker, Robert E. Bauer
-
Patent number: 3981753Abstract: A novel stop-weld composition comprises a mixture of a stop-weld material and a compound capable of dissociating into a solid and a gas at temperatures below the melting point of the metal being processed. Sheet metal panels are imprinted with the novel stop-weld composition, rollbonded and heated to a temperature sufficient to dissociate the compound and inflate the metal panels in the imprinted areas.Type: GrantFiled: June 26, 1970Date of Patent: September 21, 1976Assignee: Kennecott Copper CorporationInventor: William H. L. Hopper
-
Patent number: 3976515Abstract: Low-fuming fluxes are provided which contain up to about 18% by weight of a dust-free large-particle source of ammonium chloride.Type: GrantFiled: August 27, 1973Date of Patent: August 24, 1976Assignee: E. I. Du Pont de Nemours and CompanyInventor: Daniel R. English
-
Patent number: 3971675Abstract: A new nonfuming, soldering and brazing flux particularly useful in soldering aluminum surfaces which comprises a mixture of zinc bromide and an alkali metal bromide such as potassium bromide.Type: GrantFiled: July 1, 1974Date of Patent: July 27, 1976Assignee: The Dow Chemical CompanyInventor: Robert C. Thomas
-
Patent number: 3969159Abstract: A casting powder having a fluxing agent free from fluorides and borates and containing titanium dioxide in alloyed form or in admixture, preferably in an amount of 20 to 35 percent by weight.Type: GrantFiled: September 3, 1974Date of Patent: July 13, 1976Inventor: Heinz-Joachim Eitel
-
Patent number: 3964936Abstract: An acidic aqueous coating solution for forming on an aluminum surface a coating which is corrosion resistant and to which overlying coatings adhere excellently is disclosed. The coating solution contains compounds of zirconium and fluorine. The use of boric acid in the solution is disclosed also. The coating solution is capable of forming on an aluminum surface a uniformly colorless and clear coating so that the coated surface has the appearance of the underlying metal surface, that is, the coating can be formed without changing the appearance of the metal surface. When coating a shiny bright aluminum surface, there can be produced a coated surface having a uniformly shiny bright appearance which is maintained even after the coated surface is subjected to boiling water.Type: GrantFiled: December 17, 1974Date of Patent: June 22, 1976Assignee: Amchem Products, Inc.Inventor: Narayan Das
-
Patent number: 3962525Abstract: Ingot head surface finish is improved by providing a coating of mould flux on the molten metal-contacting surface of hot top lining slabs.Type: GrantFiled: October 8, 1974Date of Patent: June 8, 1976Assignee: Foseco Trading LimitedInventor: Dillwyn Morgan Davies
-
Patent number: 3959031Abstract: Molten basic welding fluxes low in manganese and having low moisture sensitivity composed as follows: 10 - 18 % by weight of SiO.sub.2 15 - 25 % by weight of Al.sub.2 O.sub.3 0.1 - 2.0 % by weight of FeO and/or Fe.sub.2 O.sub.3 0 - 8 % by weight of TiO.sub.2 0 - 3 % by weight of MnO 1 - 8 % by weight of CaO 0 - 4 % by weight of BaO 16 - 33 % by weight of MgO 0 - 2 % by weight of Na.sub.2 O and/or K.sub.2 O 0 - 8 % by weight of ZrO.sub.2 15 - 28 % by weight of CaF.sub.2 0 - 1 % by weight of Cr.sub.2 O.sub.3 1 - 8 % by weight of CaO + BaO 25 - 37 % by weight of CaO + BaO + MgO 12 - 22 % by weight of SiO.sub.2 + TiO.sub.2.The invention also relates to a process of making the fluxes. The welding fluxes according to the invention have considerably improved welding properties.Type: GrantFiled: December 23, 1974Date of Patent: May 25, 1976Assignee: Wacker-Chemie GmbHInventor: Anton More
-
Patent number: 3951328Abstract: In methods of joining metal surfaces involving heating to a temperature above about 560.degree.C, the use of a flux comprising a mixture of potassium fluoaluminates. Particularly for brazing aluminum, a flux consisting essentially of potassium fluoaluminate complexes (e.g. KAlF.sub.4 and K.sub.3 AlF.sub.6) may be employed, having a composition corresponding to an AlF.sub.3 /KF ratio, in parts by weight, between about 65:35 and about 45:55. The flux is essentially free of unreacted potassium fluoride and may be in divided solid form.Type: GrantFiled: October 6, 1975Date of Patent: April 20, 1976Assignee: Alcan Research and Development LimitedInventors: Eric Robert Wallace, Ernest William Dewing
-
Patent number: 3943270Abstract: Galvanising fluxes consisting of zinc chloride, one or more of sodium, potassium, calcium and magnesium chlorides, and an acid or acid salt (preferably aluminium chloride). In solution in water, the pH of the solution is less than 5.Type: GrantFiled: February 25, 1974Date of Patent: March 9, 1976Assignee: Foseco International LimitedInventors: Max Gerhard Neu, Arthur William Murcott
-
Patent number: 3936325Abstract: This invention relates to the use of a zinc-ammonium chloride solder flux of the type intended to be used on high temperature solder baths of an inert or partially inert three dimensional fibrous blanket to impede the circulation of the thin melted zinc-ammonium chloride flux on the surface of the high temperature solder bath and thus extend the life of the solder flux by reducing the volatilization of the ammonium chloride active fluxing agent.This invention also relates to the use in a zinc-ammonium chloride solder flux of the type intended to be used on high temperature solder baths of a viscosity thickening ingredient which increases the viscosity of the melted flux sufficiently to stop the normal circulatory stirring motion of the thin liquid melted zinc-ammonium chloride flux but permits a limited turn-over motion at the interface of the rotating solder roll and the bath of melted flux, with the balance of the melted flux remaining essentially stationary.Type: GrantFiled: September 23, 1974Date of Patent: February 3, 1976Inventor: Dunbar L. Shanklin
-
Smokeless fluxing agent for hot-tinning, hot-galvanizing, and hot-leading of articles made from iron
Patent number: 3936326Abstract: This invention relates to a smokeless fluxing agent for hot-tinning, hot-galvanizing, and hot-leading iron articles comprising a mixture of zinc chloride, potassium chloride, sodium chloride and lithium chloride, and containing no ammonium chloride.Type: GrantFiled: November 1, 1974Date of Patent: February 3, 1976Assignee: Th. Goldschmidt AGInventor: Wolfgang Muller -
Patent number: 3932200Abstract: A flux particularly adapted to the carrying out of a method for a build-up welding proposed by the present applicant essentially comprises, by weight, 50 to 90% of calcium fluoride and 10 to 40% of alumina with an addition of one or more compounds selected from the group consisting of 0.5 to 7% of iron oxide, 2 to 10% silica, 1 to 17% of manganese oxide and 2 to 10% of chrome oxide.Type: GrantFiled: January 31, 1974Date of Patent: January 13, 1976Assignee: Japan Steel Works, Ltd.Inventors: Katao Miyano, Shunichi Tomizuka, Takao Adachi, Tomoo Takenouchi, Satoshi Kondo, Akira Hirama, Yasuo Endo