公开(公告)号：US20190330709A1

公开(公告)日：2019-10-31

申请号：US15964728

申请日：2018-04-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianghuai Yang ,  Sheri K. Kurgin ,  Qigui Wang ,  James D. Cremonesi ,  Daniel J. Wilson

IPC: C21D9/30 ,  F16C3/06 ,  C21D1/10 ,  H05B6/40

Abstract: A method for heat treating a crankshaft surface on a crankshaft for a vehicle propulsion system includes heating the crankshaft surface to a first temperature and heating the crankshaft surface to a second temperature that is higher than the first temperature.

公开(公告)号：US10458951B2

公开(公告)日：2019-10-29

申请号：US15145418

申请日：2016-05-03

Applicant: GM Global Technology Operations LLC

Inventor： Jianghuai Yang ,  Martin S. Kramer ,  Qigui Wang ,  Yucong Wang ,  Zhe Li

IPC: C23C4/18 ,  F02F1/18 ,  G01N29/14 ,  G01N29/04 ,  C23C4/00 ,  F02F1/00

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.

公开(公告)号：US20190161838A1

公开(公告)日：2019-05-30

申请号：US15824704

申请日：2017-11-28

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jianghuai Yang ,  Qigui Wang ,  Daniel J Wilson ,  James D Cremonesi

IPC: C22C38/60 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/06 ,  C22C38/02 ,  C21D1/20

Abstract: A high-strength steel alloy and automotive components produced therefrom, as well as a method for forming a steel alloy, are provided. The high-strength steel alloy includes iron, about 0.24 to about 0.80 weight percent carbon, about 0.40 to about 2.10 weight percent manganese, about 0.20 to about 1.60 weight percent silicon, about 0.05 to about 0.14 weight percent sulfur; about 0.10 to about 12.0 weight percent chromium, about 0.10 to about 2.50 weight percent nickel, and about 0.02 to about 0.07 weight percent aluminum. The steel alloy may also include boron, molybdenum, titanium, niobium, and/or nitrogen. The method includes air quenching a steel alloy component after mold shakeout until the component reaches a temperature in the range of 420 to 530 degrees Celsius.

公开(公告)号：US20190024708A1

公开(公告)日：2019-01-24

申请号：US15655002

申请日：2017-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Daniel J Wilson ,  Jianghuai Yang ,  James D Cremonesi ,  Qigui Wang

IPC: F16C17/12 ,  F16C17/02 ,  F16C17/26 ,  C22C21/00

Abstract: A bearing shell for an automotive propulsion system is provided, along with a crankshaft assembly and an engine having a bearing shell. The bearing shell comprises an inner layer having an inner layer thickness. The inner layer defines a bearing surface on an inner side. The bearing surface of the inner layer is configured to support and contact an oil film. The bearing shell also has an outer layer disposed around the inner layer and radially outward of the inner layer. The outer layer has an outer layer thickness that is greater than the inner layer thickness, the outer layer thickness being at least one millimeter. The outer layer is formed of an outer layer material comprising an aluminum alloy and/or a metal matrix composite material. The inner layer is formed of an inner layer material, wherein the outer layer material is stronger than the inner layer material.

公开(公告)号：US20180320259A1

公开(公告)日：2018-11-08

申请号：US15584554

申请日：2017-05-02

Applicant: GM Global Technology Operations LLC

Inventor： Qigui Wang ,  Jianghuai Yang ,  Maurice G. Meyer ,  William L. Miller ,  Dale A. Gerard

IPC: C22F1/04 ,  C22F1/00 ,  C22C21/00

CPC classification number: C22F1/04 ,  C22C21/00 ,  C22F1/002

Abstract: A multiple step method increases net tensile strengths of high pressure die cast (HPDC) aluminum components through an alloy- and process-dependent thermal treatment. The highest temperature feasible for solution treatment of an HPDC casting is determined by computational thermodynamics, kinetics and the gas laws based on the alloy composition and gas pressure in the finally solidified parts. Determining the maximum solution temperature involves mapping pressure in the bubbles of solidified material to avoid the formation of blisters by surface adjacent bubbles in the casting. To reduce residual tensile stress, the HPDC parts are air cooled after the solution treatment. Finally, a specific, multiple temperature aging cycle is utilized to improve the aging response of air cooled HPDC parts and increase net tensile strength.

公开(公告)号：US20180010214A1

公开(公告)日：2018-01-11

申请号：US15202136

申请日：2016-07-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Qigui Wang ,  Melani R. Wright ,  William L. Miller ,  Jianghuai Yang

IPC: C22C21/02 ,  F02F7/00

CPC classification number: C22C21/02 ,  F02F7/0085 ,  F02F2007/009 ,  F02F2200/06

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.