公开(公告)号：US12098466B2

公开(公告)日：2024-09-24

申请号：US18180318

申请日：2023-03-08

申请人： Caterpillar Inc.

发明人： Michael A. Pershing ,  Curtis A. Henning ,  Robert J. Pickerill ,  Scott A. Johnston

IPC分类号： C23C8/22 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/48

CPC分类号： C23C8/22 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44 ,  C22C38/48 ,  C21D2211/001 ,  C21D2211/008 ,  C22C2204/00

摘要： A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.

公开(公告)号：US11624106B2

公开(公告)日：2023-04-11

申请号：US16822753

申请日：2020-03-18

申请人： Caterpillar Inc.

发明人： Michael A. Pershing ,  Curtis A. Henning ,  Robert J. Pickerill ,  Scott A. Johnston

IPC分类号： C23C8/22 ,  C22C38/48 ,  C22C38/44 ,  C22C38/02 ,  C21D9/46 ,  C22C38/04

摘要： A carburized steel component, comprising a steel base including, by weight percent, from 0.08% to 0.35% carbon, 0.5% to 1.3% manganese, 0% to 0.35% silicon, 0.2% to 2.0% chromium, 0% to 4% nickel, 0% to 0.50% molybdenum, 0% to 0.06% niobium, and a remaining weight percent of iron, and a carburized layer of above 0.35% by weight carbon from a surface of the carburized layer to a carburized layer depth, wherein the carburized layer depth is from 0.5 mm to 3.0 mm, wherein the carburized layer comprises a microstructure including martensite, retained austenite, carbide, and less than 2% by volume non-martensitic transformation products (NMTP), and wherein the carburized layer includes a prior austenite average grain size of 3.0-8.0 microns from the surface to a depth of at least 0.2 mm.

公开(公告)号：US11524733B2

公开(公告)日：2022-12-13

申请号：US16534866

申请日：2019-08-07

申请人： Caterpillar Inc.

发明人： Chandrasen R. Rathod ,  Roger L. Recker ,  Robert J. Pickerill ,  Susan M. Graham ,  Scott Keele ,  Thomas J. Yaniak

IPC分类号： B62D55/15 ,  B62D55/12 ,  B62D55/21

摘要： A bushing for a track assembly, according to one or more embodiments, includes: a tubular bushing substrate having a longitudinal length and an outer surface; and at least one white iron member fixed to the outer surface of the tubular bushing substrate.