公开(公告)号：US10227949B2

公开(公告)日：2019-03-12

申请号：US15389521

申请日：2016-12-23

Applicant: Caterpillar Inc.

Inventor： Curtis J. Graham ,  Daniel T. Cavanaugh ,  Waylon S. Walker

IPC: F02F3/28 ,  F02B77/08 ,  F02B23/06 ,  F02F3/22

Abstract: A piston including a piston crown, the piston crown defining a combustion bowl with a bowl base and bottom surface. A failure initiation structure is provided on the bottom surface of the combustion bowl to initiate favorable fracture at predetermined loads. Such favorable fracture may lead to the a separation of a fragment of the bowl base from the combustion bowl when a predetermined load or pressure is exceeded within the combustion bowl.

公开(公告)号：US20180179986A1

公开(公告)日：2018-06-28

申请号：US15389521

申请日：2016-12-23

Applicant: Caterpillar Inc.

Inventor： Curtis J. Graham ,  Daniel T. Cavanaugh ,  Waylon S. Walker

IPC: F02F3/28 ,  F02F3/20 ,  F02B77/08 ,  F02F3/26

CPC classification number: F02F3/28 ,  F02B23/0672 ,  F02B77/08 ,  F02B2275/00 ,  F02F3/22 ,  F02F2200/00 ,  F02F2200/04 ,  Y02T10/125

Abstract: A piston including a piston crown, the piston crown defining a combustion bowl with a bowl base and bottom surface. A failure initiation structure is provided on the bottom surface of the combustion bowl to initiate favorable fracture at predetermined loads. Such favorable fracture may lead to the a separation of a fragment of the bowl base from the combustion bowl when a predetermined load or pressure is exceeded within the combustion bowl.

公开(公告)号：US20160340762A1

公开(公告)日：2016-11-24

申请号：US14717779

申请日：2015-05-20

Applicant: Caterpillar Inc.

Inventor： Daniel T. Cavanaugh ,  Justin Embrey ,  Waylon S. Walker

IPC: C22C38/52 ,  C22C38/44 ,  C22C38/42 ,  C22C38/12 ,  C22C38/10 ,  C23C30/00 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B23K26/34 ,  C23C26/00 ,  C22C38/46 ,  C22C38/08

CPC classification number: C22C38/52 ,  B23K26/34 ,  B23K2103/04 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/105 ,  C22C38/12 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C23C24/106

Abstract: A cladding composition is configured for use in a laser cladding process to remanufacture the wear surfaces of machine components that require a significant degree of hardness. The cladding composition can be provided in a powdered form and can include molybdenum (Mo), tungsten (W), cobalt (Co), nickel (Ni), carbon (C), and manganese (Mn) with the balance of the composition being iron. The cladding composition, after melting and solidifying on the wear surface, can from a solid cladding layer having a hardness of 50 or greater as measured on the Rockwell C scale while maintain a significant degree of fracture toughness.

Abstract translation: 包层组合物被配置用于激光熔覆过程中以再制造需要显着硬度的机器部件的磨损表面。 包层组合物可以以粉末形式提供，并且可以包括钼（Mo），钨（W），钴（Co），镍（Ni），碳（C）和锰（Mn），其余组成为 铁。 包层组合物在磨损表面上熔化和固化之后，可以从硬度为50或更大的固体包覆层上测量，其在洛氏C标度上测量，同时保持显着程度的断裂韧性。