公开(公告)号：WO2012170332A2

公开(公告)日：2012-12-13

申请号：PCT/US2012/040686

申请日：2012-06-04

Applicant: CATERPILLAR INC. ,  LIU, Tianjun ,  MCKIMPSON, Marvin, Grendal

Inventor： LIU, Tianjun ,  MCKIMPSON, Marvin, Grendal

IPC: C21D1/06

CPC classification number: C21D1/09 ,  C21D1/06 ,  C21D1/56 ,  C21D9/0068 ,  C21D9/08 ,  C21D9/14 ,  C21D2211/001 ,  C21D2211/008 ,  C21D2221/10 ,  C21D2251/02 ,  C22C37/00 ,  F02F1/12 ,  F02F1/16 ,  F02F2001/006 ,  Y10T428/12493

Abstract: A machine component (12) includes a body made of cast iron. The body may include a surface (24) configured to be subject to cavitation-induced erosion. The component may also include a hardened covering (42) on the surface of the body. The covering may have a crystal structure including martensite and between about 5% to about 40% austenite.

Abstract translation: 机器部件（12）包括由铸铁制成的主体。 主体可以包括构造成经受气蚀引起的侵蚀的表面（24）。 该部件还可以包括在主体表面上的硬化覆盖物（42）。 覆盖物可以具有包括马氏体和约5％至约40％奥氏体的晶体结构。

公开(公告)号：WO2012154737A2

公开(公告)日：2012-11-15

申请号：PCT/US2012/036935

申请日：2012-05-08

Applicant: CATERPILLAR INC. ,  LIU, Tianjun

Inventor： LIU, Tianjun

IPC: B62D55/20 ,  B62D55/18 ,  B62D55/08

CPC classification number: B62D55/21

Abstract: A composite track link (10) is provided that has a body (42) and a replaceable rail (34) brazed or soldered together to provide a metallurgical bond between the track link body (42) and the rail (134) such that the rail (134) may be removed and replaced by heating the track link (10) or the brazing or soldering filler metal when the rail (134) becomes worn. This process enables the rail (134) to be separated from the body (42) of the track link (10) so a new rail (34) can be brazed or soldered to the body (42) of the track link (10). As a result, track links (10) or bodies of track links (10) may outlast the rails (34) by multiple use cycles. Further, the body (42) and rail (134) may be formed of different materials.

Abstract translation: 提供了一种复合轨道连杆（10），其具有钎焊或焊接在一起以在轨道连杆体（42）和轨道（134）之间提供冶金结合的主体（42）和可更换轨道（34），使得轨道 （134）可以通过在轨道（134）磨损时加热轨道连杆（10）或钎焊或焊接填充金属来取代和替换。 该过程使得轨道（134）能够与轨道连杆（10）的主体（42）分离，使得新的轨道（34）可以钎焊或焊接到轨道连杆（10）的主体（42）。 结果，轨道链路（10）或轨道链路（10）的主体可以通过多个使用周期使轨道（34）延长。 此外，主体（42）和轨道（134）可以由不同的材料形成。

公开(公告)号：WO2013095778A1

公开(公告)日：2013-06-27

申请号：PCT/US2012/062925

申请日：2012-11-01

Applicant: CATERPILLAR INC.

Inventor： LIU, Tianjun ,  MCKIMPSON, Marvin, Grendel

IPC: F02F1/00 ,  F02F1/18 ,  C23C4/06

CPC classification number: C23C30/00 ,  B32B15/011 ,  C22C33/0257 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/16 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/32 ,  C22C38/34 ,  C22C38/36 ,  C23C2/04 ,  C23C4/04 ,  C23C14/06 ,  C23C24/103 ,  C23C26/00 ,  C23C30/005 ,  F02F1/004 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/26 ,  Y10T428/31678

Abstract: A machine component (12) may include a body made of an iron alloy. The body may include a surface (24), and a coating (42) fused to the surface. The coating may be an alloy including phosphorous, carbon, and iron. The coating may have solidus temperature of less than or equal to about 1000°C, and a hardness greater than or equal to about 50 HRC.

Abstract translation: 机器部件（12）可以包括由铁合金制成的主体。 主体可以包括表面（24）和与表面融合的涂层（42）。 涂层可以是包括磷，碳和铁的合金。 涂层的固相线温度可以小于或等于约1000℃，硬度大于或等于约50HRC。

公开(公告)号：WO2022140093A1

公开(公告)日：2022-06-30

申请号：PCT/US2021/063032

申请日：2021-12-13

Applicant: CATERPILLAR INC.

Inventor： KISER, Matthew T. ,  CAVANAUGH, Lindsey S. ,  CONGDON, Thomas M. ,  GRAHAM, Susan M. ,  LIU, Tianjun ,  VELIZ, Mark D. ,  YANIAK, Thomas J.

IPC: C21D1/18 ,  B21D28/00 ,  C21D1/25 ,  C21D1/56 ,  C21D1/613 ,  C22C38/02 ,  C22C38/04 ,  C21D8/02 ,  C21D9/00 ,  C21D9/42 ,  C21D9/46 ,  B21K23/02 ,  B21L11/00 ,  B62D55/00 ,  B23C3/00 ,  B23P25/00

Abstract: An example track shoe (118), cutting edge (120), or other component of a machine (100) is formed in a heated process, such as hot-rolling followed by air-hardening. The air-hardening process involves cooling the component by flowing air over the component (e.g., air cooling), such that the component is cooled at a controlled rate. During the air-cooling process, such as in the range of about 250º C to about 1100º C, the component may be machined, such as by shearing, punching, drilling, etc. The machining may form the final shape of the component. As the air-hardening process is completed, and the component approaches room temperature, the component may have at least 5% bainitic crystal composition, and as high as greater than 80% bainitic crystal composition, resulting in relatively high hardness and fracture toughness. The final track shoe (118) may have a hardness between about 40 HRC and 55 HRC.

公开(公告)号：WO2015142453A1

公开(公告)日：2015-09-24

申请号：PCT/US2015/016266

申请日：2015-02-18

Applicant: CATERPILLAR INC.

Inventor： LIU, Tianjun ,  KISER, Matthew Thomas

IPC: C21D7/13 ,  C21D8/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C22C38/34 ,  C22C38/38

CPC classification number: B62D55/20 ,  C21D7/13 ,  C21D8/005 ,  C21D9/0068 ,  C21D9/0087 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2221/00 ,  C21D2261/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38

Abstract: A method of producing a forged steel part (200) is disclosed. The method includes providing a steel billet that can be selectively hardened to different hardness levels by varying the air cooling rate. The method also includes heating the steel billet to an austenization temperature of the steel billet. The method further includes hot forging the steel billet to form the steel part (200) including a first region (210) and a second region (220). The method yet further includes selectively cooling the hot forged steel part (200) by air cooling the first region (210) at a first cooling rate and air cooling the second region (220) at a second cooling rate that is less than the first cooling rate.

Abstract translation: 公开了一种生产锻造钢部件（200）的方法。 该方法包括提供钢坯，其可以通过改变空气冷却速率而选择性地硬化到不同的硬度水平。 该方法还包括将钢坯加热到钢坯的奥氏体化温度。 该方法还包括热锻钢坯以形成包括第一区域（210）和第二区域（220）的钢部分（200）。 该方法还包括通过以第一冷却速率空气冷却第一区域（210）并以低于第一冷却的第二冷却速率的空气冷却第二区域（220）来选择性地冷却热锻钢件（200） 率。

公开(公告)号：WO2014153398A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/031201

申请日：2014-03-19

Applicant: CATERPILLAR INC.

Inventor： LIU, Tianjun ,  KISER, Matthew Thomas

IPC: C21D8/00 ,  C21D7/13 ,  C22C38/00

CPC classification number: C22C38/38 ,  C21D1/18 ,  C21D1/20 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D7/13 ,  C21D8/005 ,  C21D2211/002 ,  C21D2261/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12 ,  C22C38/14 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34

Abstract: A method of producing a forged steel part is disclosed to include providing a steel billet having a composition including 0.25 - 0.40 wt.% C, 1.50 - 3.00 wt.% Mn, 0.30 - 2.00 wt.% Si, 0.00 - 0.150 wt.% V, 0.02 - 0.06 wt.% Ti, 0.010 - 0.04 wt.% S, 0.0050 - 0.0150 wt.% N, 0.00 - 1.00 wt.% Cr, 0.00 - 0.30 wt.% Mo, 0.00 - 0.003 wt.% B, and a balance of Fe and incidental impurities. The method may further include heating the steel billet to an austenization temperature of approximately 1150 degrees C to 1350 degrees C, hot forging the steel billet to form the steel part, and controlled air cooling the forged steel part after the hot forging. The method may still further include induction heating select portions of the forged steel part after the controlled air cooling to increase the hardness of the select portions of the forged steel part, followed by quenching and tempering before the final machining.

Abstract translation: 公开了一种生产锻造钢部件的方法，包括提供具有包括0.25-0.40重量％C，1.50-3.00重量％Mn，0.30-2.00重量％Si，0.00-0.150重量％的组成的钢坯的钢坯， V，0.02-0.06重量％Ti，0.010-0.04重量％S，0.0050-0.0150重量％N，0.00-1.00重量％的Cr，0.00-0.30重量％的Mo，0.00-0.003重量％的B， 余量为Fe和杂质。 该方法可以进一步包括将钢坯加热至约1150℃至1350℃的奥氏体化温度，热锻钢坯以形成钢部分，并且在热锻后对空气冷却锻造钢部件。 该方法还可以包括在控制空气冷却之后的锻造钢部件的感应加热选择部分，以增加锻造钢部件的选择部分的硬度，随后在最终加工之前进行淬火和回火。

公开(公告)号：WO2015017119A1

公开(公告)日：2015-02-05

申请号：PCT/US2014/046617

申请日：2014-07-15

Applicant: CATERPILLAR INC.

Inventor： LIU, Tianjun ,  MANIRUZZAMAN, Mohammed ,  KISER, Matthew Thomas ,  YANIAK, Thomas John

IPC: C22C38/34 ,  C22C38/46 ,  C22C38/38

CPC classification number: C22C38/34 ,  C21D1/25 ,  C21D9/22 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/32 ,  C22C38/60

Abstract: A steel article is provided for improved wear resistance due to optimized hardness, toughness and temper resistance. In one exemplary embodiment, the steel article may have a composition including about 0.2 to 0.43 percent by weight of carbon, about 0.5 to about 3.0 percent by weight of silicon, about 0.01 to about 3.0 percent by weight of chromium, and 0.43 to about 2.5 percent by weight of vanadium.

Abstract translation: 提供钢制品，由于优化的硬度，韧性和耐回火性而提高耐磨性。 在一个示例性实施方案中，钢制品可以具有包含约0.2至0.43重量％的碳，约0.5至约3.0重量％的硅，约0.01至约3.0重量％的铬和0.43至约2.5的组成 重量百分比的钒。