公开(公告)号：US10335851B2

公开(公告)日：2019-07-02

申请号：US15494774

申请日：2017-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B22C9/22 ,  B22C3/00 ,  B22C9/02 ,  B22C9/10 ,  B22D25/02 ,  B22D25/06 ,  F16C3/08

Abstract: A sand casting apparatus, a method of forming a sand casting apparatus, and an automotive component are provided. The sand casting apparatus includes a sand casting base including a sand mold and/or a sand core having a base sand mixture, where the base sand mixture includes a sand material and a binder material. The sand casting apparatus further includes an outer layer disposed on the sand casting base. The outer layer includes silicon, magnesium, calcium, zirconium, manganese, carbon, aluminum, and iron. The automotive component has portions defining an aperture therein. The automotive component is formed of cast iron and has a nodular graphite structure from interior matrix to surface, where the nodular graphite structure on the surface is formed by a sand core having an outer layer that has reacted with the cast iron automotive component to form the nodular graphite structured surface.

公开(公告)号：US20180304346A1

公开(公告)日：2018-10-25

申请号：US15494774

申请日：2017-04-24

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

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

IPC: B22C9/22 ,  B22C3/00 ,  B22C9/02 ,  B22C9/10 ,  B22D25/02 ,  B22D25/06 ,  F16C3/08

CPC classification number: B22C9/22 ,  B22C3/00 ,  B22C9/02 ,  B22C9/10 ,  B22D25/02 ,  B22D25/06 ,  F16C3/08 ,  F16C2220/02

Abstract: A sand casting apparatus, a method of forming a sand casting apparatus, and an automotive component are provided. The sand casting apparatus includes a sand casting base comprising a sand mold and/or a sand core comprising a base sand mixture, where the base sand mixture includes a sand material and a binder material. The sand casting apparatus further comprises an outer layer disposed on the sand casting base. The outer layer comprises silicon, magnesium, calcium, zirconium, manganese, carbon, aluminum, and iron. The automotive component has portions defining an aperture therein. The automotive component is formed of cast iron and has a nodular graphite structure from interior matrix to surface, where the nodular graphite structure on the surface is formed by a sand core having an outer layer that has reacted with the cast iron automotive component to form the nodular graphite structured surface.

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.