Patents by Inventor Qigui Wang

Qigui Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR METALLURGICALLY BONDING A CYLINDER LINER INTO A BORE IN AN ENGINE BLOCK
    Publication number: 20180111231
    Abstract: A method for metallurgically bonding a cylinder liner in a bore in an engine block includes axially aligning the cylinder liner with a bore in the engine block, rotating the cylinder liner about the aligned axis, and translating the cylinder liner along the aligned axis to position the cylinder liner within the bore.
    Type: Application
    Filed: October 25, 2016
    Publication date: April 26, 2018
    Inventors: Qigui Wang, William L. Miller, Jianghuai Yang, Huaxin Li
  • METHOD FOR RELIEVING RESIDUAL STRESS IN CAST-IN-PLACE LINERS OF HPDC ENGINE BLOCKS
    Publication number: 20180080107
    Abstract: A method for relieving residual stress in cast-in-place liners of high pressure die cast (HPDC) engine blocks to prevent cracking in the liners during the machining process. The method includes locally heating up the liners and the surrounding engine block material through rapid induction heating and then cooling down the liners and surrounding engine block material with still ambient air to a predetermined temperature after the residual stress has been reduced to a desired threshold.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 22, 2018
    Inventors: Maurice G. Meyer, Qigui Wang, Jianghuai Yang
  • STEEL ALLOYS AND CYLINDER LINERS THEREOF
    Publication number: 20180057915
    Abstract: Steel alloys and steel alloy cylinder liners are provided. Steel alloys can comprise iron, about 0.8% to about 2.1% manganese, about 0.10% to about 0.40% silicon, about 0.05% to about 0.30% sulfur, about 0.06% to about 0.16% phosphorus, about 0.09% to about 0.21% titanium, about 0.09% to about 0.21% aluminum, and either low carbon and about 0.0005% to about 0.0055% boron, or medium carbon. The steel alloy cylinder liners can be capable of achieving a mirror-like finish. The steel alloy cylinder liners can comprise ultra-thin wall thickness of less than about 1.5 mm or about 1.0 mm to about 0.5 mm. The steel alloy cylinder liners can comprise a Young's modulus of at least 200 GPa. The steel alloy cylinder liners can comprise a Young's modulus to density ratio of at least about 25.64 GPa/(g/cm3).
    Type: Application
    Filed: August 30, 2016
    Publication date: March 1, 2018
    Inventors: Huaxin Li, Jianghuai Yang, Qigui Wang, William Miller
  • ADHESION OF THERMAL SPRAY USING COMPRESSION TECHNIQUE
    Publication number: 20180045134
    Abstract: An improved surface activation technique improves the adhesion of thermal spray coatings, which is useful for engine cylinder bores. The new method includes compressing the cylinder bore surface to create a surface profile on the surface, such as through rolling a roller along the surface. An engine block is also provided, which includes a plurality of cylinder bores, each cylinder bore having an inner surface, and each inner surface having a surface profile that includes a helical groove and other surface profiles formed in the inner surface. A thermal spray coating is formed on the inner surface of each cylinder bore, the thermal spray coating being adhered to the surface profile of the inner surface. A roller assembly for activating the surface is also provided.
    Type: Application
    Filed: August 10, 2016
    Publication date: February 15, 2018
    Inventors: Jianghuai Yang, Qigui Wang, Martin S Kramer, Dale A Gerard
  • DIRECT SQUEEZE CASTING
    Publication number: 20180029113
    Abstract: A casting system includes a pour cup, a plurality of runners that receive molten metal from the pouring cup, a top mold and a bottom mold that receive the molten metal from the plurality of runners, and a plurality of slides positioned within the top mold and the bottom mold. The positioning of the plurality of slides applies direct pressure on the molten metal in the top mold and the bottom mold to form a cast structural component.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 1, 2018
    Inventors: Richard J. Osborne, Qigui Wang, Frank Sant
  • PISTON RING AND MANUFACTURING METHOD
    Publication number: 20180023703
    Abstract: A piston ring includes a generally circular open ring having a generally cylindrical outer diameter surface and an inner diameter surface having a plurality of radially outwardly extending arcuate recesses. A method of making the piston ring includes extruding a rectangle cross-section steel wire to include at least two recesses in a side edge thereof. The extruded steel wire is wound in a ring-shape with the arcuate recesses being on an inner diameter surface of the wound ring.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 25, 2018
    Inventors: Ronald J. PETRUS, Zheng MA, Qigui WANG
  • METHOD OF MANUFACTURING METAL CASTINGS
    Publication number: 20180016666
    Abstract: A method of manufacturing an aluminum alloy cylinder head includes providing a mold assembly including a gating system, a head deck mold, and a mold cavity. Liquid aluminum alloy is pumped at low pressure into the gating system of the mold assembly filling the mold cavity. Next, the head deck mold is removed from the mold assembly and the head deck and combustion chambers of the cylinder head are quenched.
    Type: Application
    Filed: July 18, 2016
    Publication date: January 18, 2018
    Inventors: Christopher D. Cogan, Qigui Wang, Maurice G. Meyer
  • HIGH STRENGTH HIGH CREEP-RESISTANT CAST ALUMINUM ALLOYS AND HPDC ENGINE BLOCKS
    Publication number: 20180010214
    Abstract: Aluminum alloys having improved properties are provided. The alloy includes about 8 to about 12 weight percent silicon, about 0.5 to about 1.5 weight percent copper, about 0.2 to about 0.4 weight percent magnesium, 0 to about 0.5 weight percent iron, about 0.3 to about 0.6 weight percent manganese, 0 to about 1.5 weight percent nickel, and 0 to about 0.5 weight percent zinc. Aluminum may be present in an amount between about 80 and 91 weight percent. The alloy may include about 0.1 to about 0.5 weight percent each of trace elements such as titanium, vanadium, and/or zirconium, and up to about 0.25 weight percent of all other trace elements. In addition, the alloy may contain about 0.03 to about 0.1 weight percent of strontium, sodium, and/or antimony, and up to 5 ppm phosphorus. Also disclosed is a high pressure die cast article, such as an engine block.
    Type: Application
    Filed: July 5, 2016
    Publication date: January 11, 2018
    Inventors: Qigui Wang, Melani R. Wright, William L. Miller, Jianghuai Yang
  • Center circular gating design for squeeze casting induction rotor core
    Patent number: 9839959
    Abstract: A number of variations may include at least one mold portion that may define a first cavity, a circular gating system, and at least one sprue. The circular gating system may surround the first cavity and define a continuous in-gate from the circular gating to the first cavity. The at least one sprue and at least one vent may be in fluid communication with the circular gating system and the first cavity.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 12, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Richard J. Osborne, Qigui Wang, Frank Sant
  • CYLINDER BLOCK INSPECTION METHOD AND SYSTEM
    Publication number: 20170322183
    Abstract: A system for inspecting thermal spray coated cylinder bores of aluminum alloy cylinder blocks, the system includes a failure detection apparatus, a heating apparatus, a cooling apparatus, and a control unit in electronic communication with each of the failure detection apparatus, the heating apparatus, and the cooling apparatus, and wherein the control unit includes a memory and a control logic sequence for operating the system.
    Type: Application
    Filed: May 3, 2016
    Publication date: November 9, 2017
    Inventors: Jianghuai Yang, Martin S. Kramer, Qigui Wang, Yucong Wang, Zhe Li
  • Method to improve riser feedability for semi-permanent mold casting of cylinder heads
    Patent number: 9808858
    Abstract: A method of improving riser feedability in semi-permanent mold casting is disclosed. The method includes providing a first receptacle fluidly connected to a mold cavity and providing a second receptacle fluidly connected to a riser. Further, the method includes delivering molten metal to the first receptacle and conveying the molten metal into the mold cavity through a sprue. Delivery of molten metal to the first receptacle is terminated when the mold cavity reaches a predetermined fill level delivery of molten metal to the second receptacle is initiated. In certain embodiments, the first receptacle and the second receptacle are combined into a single receptacle and the sprue is connected to the mold cavity through a lower runner and is connected to the riser through an upper runner.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: November 7, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qigui Wang, Christopher D. Cogan
  • Cast aluminum alloy for structural components
    Patent number: 9771635
    Abstract: An aluminum alloy that can be cast into structural components wherein the alloy has reduced casting porosity, improved combination of mechanical properties including tensile strength, fatigue, ductility in the cast condition and in the heat treated condition.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: September 26, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qigui Wang, Hengcheng Liao
  • Method of making sound interface in overcast bimetal components
    Patent number: 9770757
    Abstract: A method of forming a bi-metallic casting. The method includes providing a metal preform of a desired base shape defining a substrate surface and removing a natural oxide layer and surface contamination from the substrate surface to yield a cleaned metal preform. The method further includes galvanizing the cleaned metal preform, yielding a galvanized metal preform followed by electroplating a thin nickel film on at least a portion of the substrate surface of the galvanized metal preform. Additionally, the method includes metallurgically bonding the portion of the metal preform having the nickel film with an overcast metal to form a bi-metallic casting. The nickel film promotes a metallurgical bond between the metal preform and the overcast metal.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: September 26, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Qigui Wang, Bing Ye, Haiyan Jiang
  • ALUMINUM CYLINDER BLOCK AND METHOD OF MANUFACTURE
    Publication number: 20170167435
    Abstract: A cast cylinder block for an internal combustion engine includes a first and a second cylinder bore and a shared bore wall. The first cylinder bore includes a first bore wall and the second cylinder bore includes a second bore wall. The shared cylinder bore wall includes a first portion and a second portion. A portion of the first bore wall combines with a portion of the second bore wall to form the shared cylinder bore wall. The first portion of the shared bore wall is an as-cast portion. The second portion of the shared bore wall is a metal matrix composite.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 15, 2017
    Inventor: QIGUI WANG
  • Aluminum alloy suitable for high pressure die casting
    Patent number: 9677158
    Abstract: Copper-free aluminum alloys suitable for high pressure die casting and capable of age-hardening under elevated temperatures are provided. The allow includes about 9.5-13 wt % silicon, about 0.2 to 0.6 wt % Magnesium, about 0.1 to 2 wt % iron, about 0.1 to 2 wt % manganese, about 0.1 to 1 wt % nickel, about 0.5 to 3 wt % zinc, and 0 to 0.1 wt % strontium, with a balance of aluminum. Methods for making high pressure die castings and castings manufactured from the alloy are also provided.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 13, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Qigui Wang, Wenying Yang, Jason R. Traub
  • HIGH PRESSURE DIE CAST MACHINE
    Publication number: 20170136527
    Abstract: A high pressure die casting apparatus for forming metal components includes a die cast mold, a shot sleeve, and a plunger. The shot sleeve includes a pivotable pouring lid disposed in an inlet of the shot sleeve. The pouring lid is disposed in at least one of a closed position and an open position while having a pouring profile shape for promoting smooth non turbulent flow of liquid metal from a pouring ladle to the shot sleeve.
    Type: Application
    Filed: November 16, 2015
    Publication date: May 18, 2017
    Inventors: QIGUI WANG, Michael J. Walker
  • Methods for simulating oxides in aluminum castings
    Patent number: 9652566
    Abstract: A method of simulating aluminum oxides defects in aluminum castings comprises determining the free surface area for a plurality of particles of aluminum in an aluminum melt, storing the free surface area for each particle of aluminum, tracking the free surface area change during mold filling, and calculating the total area of entrained or surface oxide films based on the free surface area change during mold filling. The method may further comprise a scalar variable method and a discrete particle method coupled together to simulate the aluminum oxide defects in aluminum castings.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: May 16, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventor: Qigui Wang
  • METHOD TO IMPROVE RISER FEEDABILITY FOR SEMI-PERMANENT MOLD CASTING OF CYLINDER HEADS
    Publication number: 20170106434
    Abstract: A method of improving riser feedability in semi-permanent mold casting is disclosed. The method includes providing a first receptacle fluidly connected to a mold cavity and providing a second receptacle fluidly connected to a riser. Further, the method includes delivering molten metal to the first receptacle and conveying the molten metal into the mold cavity through a sprue. Delivery of molten metal to the first receptacle is terminated when the mold cavity reaches a predetermined fill level delivery of molten metal to the second receptacle is initiated. In certain embodiments, the first receptacle and the second receptacle are combined into a single receptacle and the sprue is connected to the mold cavity through a lower runner and is connected to the riser through an upper runner.
    Type: Application
    Filed: October 15, 2015
    Publication date: April 20, 2017
    Inventors: Qigui Wang, Christopher D. Cogan
  • NEW HIGH PRESSURE DIE CASTING ALUMINUM ALLOY FOR HIGH TEMPERATURE AND CORROSIVE APPLICATIONS
    Publication number: 20170107599
    Abstract: Copper-free aluminum alloys suitable for high pressure die casting and capable of age-hardening under elevated temperatures. The alloy includes about 7-15 wt % silicon, about 0 to 0.6 wt % magnesium, about 0 to 1.0 wt % iron, about 0 to 1.0 wt % manganese, about 0 to 1.0 wt % zinc, about 0 to 0.1 wt % strontium, about 0 to 0.5 wt % titanium, about 0 to 0.5 wt % zirconium, about 0 to 0.5 wt % vanadium, about 0 to 0.5 wt % copper, and about 0 to 1.0 wt % nickel, with a balance of aluminum. Methods for making high pressure die castings and castings manufactured from the alloy.
    Type: Application
    Filed: October 19, 2015
    Publication date: April 20, 2017
    Inventors: Qigui Wang, Wenying Yang, Bing Ye
  • Aluminum alloy rotor for an electromagnetic device
    Patent number: 9601978
    Abstract: A rotor includes a shorting ring defining a plurality of cavities therein, and a plurality of conductor bars each integral with the shorting ring and having an end disposed within a respective one of the plurality of cavities. The shorting ring and each of the conductor bars are formed from an aluminum alloy including a lanthanoid present in an amount of from about 0.1 part by weight to about 0.5 parts by weight based on 100 parts by weight of the aluminum alloy. An aluminum alloy, and a method of forming a rotor are also disclosed.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: March 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Qigui Wang, Richard Jack Osborne, Yucong Wang, Margarita Thompson