公开(公告)号：WO2021067041A1

公开(公告)日：2021-04-08

申请号：PCT/US2020/051188

申请日：2020-09-17

Applicant: CATERPILLAR INC.

Inventor： RATHOD, Chandrasen R. ,  RECKER, Roger L. ,  PICKERILL, Robert J. ,  KEELE, Scott E. ,  WEAVER, Douglas T. ,  SORDELET, Daniel J.

IPC: B62D55/21

Abstract: A steel track chain component (162, 164, 166, 168, 202, 204), such as a track bushing (204), may be formed with a carburized portion (404), a hardface portion (412), and a core portion (410). The core portion (410) may be softer than the carburized portion (404), which in turn, may be softer than the hardface portion (412). This configuration of the various portions of the component (162, 164, 166, 168, 202, 204) may allow for relatively high wear resistance of the component (162, 164, 166, 168, 202, 204), as well as toughness. The core portion (410) may be mostly ferrite crystal structure, while the carburized portion (412) and the hardface portion (412) may include martensitic and/or austenitic crystal structure. The carburized portion (412) may be formed by carburizing the track chain component (162, 164, 166, 168, 202, 204) in a heated and carbon rich environment. The hardface portion (412) may be formed by welding a hardface alloy over at least a portion of the carburized portion (404).

公开(公告)号：WO2020050998A1

公开(公告)日：2020-03-12

申请号：PCT/US2019/047933

申请日：2019-08-23

Applicant: CATERPILLAR INC.

Inventor： JOHANNSEN, Eric J. ,  RATHOD, Chandrasen R. ,  KEELE, Scott ,  SEBRIGHT, Jason L. ,  RECKER, Roger L. ,  BLAND, Arthur ,  WEAVER, Douglas T. ,  YANIAK, Thomas J.

IPC: B62D55/21

Abstract: A bushing assembly (30) for a track assembly (12) includes a first end element (36), a second end element (36), and a central element (38) positioned between the first end element (36) and the second end element (36). The central element (38) may be interference fit or positioned between the first end element (36) and the second end element (36), and the central element (38) may include a greater hardness than the first and second end elements (36). The first end element (36), the second end element (36), and the central element (38) form a bushing (30) with a longitudinal opening (32) extending longitudinally through the bushing (32).

公开(公告)号：WO2015023587A1

公开(公告)日：2015-02-19

申请号：PCT/US2014/050543

申请日：2014-08-11

Applicant: CATERPILLAR INC.

Inventor： STEINMETZ, Andrew D. ,  SORDELET, Daniel J. ,  WEAVER, Douglas T. ,  MARCHIONE, Thierry Andre

IPC: B23K26/34 ,  B23K26/70

CPC classification number: F16C33/14 ,  B23K26/0608 ,  B23K26/10 ,  B23K26/34 ,  F16C2223/46 ,  Y10T29/49677

Abstract: A fabrication method is provided for use in making a component (10). The fabrication method may include generating a laser beam (30) at a first orientation relative to a wear surface (12) of the component to produce a first laser beam spot (32) having a first characteristic, and feeding a cladding material (34) into the first laser beam spot to produce a cladding layer (36) on the wear surface. The fabrication method may also include generating a laser beam (30) at a second orientation relative to the wear surface of the component to produce a second laser beam spot (32) having a second characteristic, and moving the second laser beam spot along the cladding layer to substantially flatten the cladding layer.

Abstract translation: 提供了制造组件（10）的制造方法。 制造方法可以包括相对于部件的磨损表面（12）以第一取向生成激光束（30），以产生具有第一特征的第一激光束点（32），并且馈送包层材料（34） 进入第一激光束点以在磨损表面上产生包层（36）。 制造方法还可以包括相对于部件的磨损表面产生第二取向的激光束（30），以产生具有第二特性的第二激光束点（32），并且沿着包层移动第二激光束点 以使包覆层基本平坦化。