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公开(公告)号：US20150132495A1
公开(公告)日：2015-05-14
申请号：US14598922
申请日：2015-01-16
Applicant: Caterpillar Inc.
Inventor： Tianjun Liu , Marvin Grendel McKimpson
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 may include a body made of an iron alloy. The body may include a surface, and a coating 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: 机器部件可以包括由铁合金制成的主体。 主体可以包括表面和与表面融合的涂层。 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。
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公开(公告)号：US20190017141A1
公开(公告)日：2019-01-17
申请号：US15651089
申请日：2017-07-17
Applicant: Caterpillar Inc.
Inventor： Tianjun Liu
Abstract: A method of heat treating a fastening member having a head portion, a shank portion, and a thread portion includes hardening the fastening member to a first hardness value. Hardening of the fastening member includes heating the fastening member at a first pre-set temperature value. The method also includes tempering the fastening member at a second pre-set temperature value to a second hardness value. The method further includes induction tempering the thread portion of the fastening member. Induction tempering of the thread portion includes heating the thread portion at a third pre-set temperature value to a third hardness value. The third hardness value of the thread portion is less than the second hardness value of the head portion and the shank portion.
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Patent Agency Ranking
公开(公告)号：US20150037198A1
公开(公告)日：2015-02-05
申请号：US13954212
申请日：2013-07-30
Applicant: Caterpillar Inc.
Inventor： Tianjun Liu , Mohammed Maniruzzaman , Matthew Thomas Kiser , Thomas John Yaniak
IPC: C22C38/34 , C22C38/32 , C22C38/28 , C22C38/00 , C22C38/22 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/60 , C22C38/24
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重量％的钒。
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公开(公告)号：US20150266526A1
公开(公告)日：2015-09-24
申请号：US14220971
申请日：2014-03-20
Applicant: CATERPILLAR INC.
Inventor： Tianjun Liu , Matthew Thomas Kiser
IPC: B62D55/20 , C21D9/00 , C22C38/38 , C22C38/34 , C22C38/32 , C22C38/12 , C22C38/24 , C22C38/22 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/14 , C21D8/00 , C22C38/28
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 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 including a first region and a second region. The method yet further includes selectively cooling the hot forged steel part by air cooling the first region at a first cooling rate and air cooling the second region 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来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和第二区域的钢部件。 该方法还包括通过以第一冷却速率空气冷却第一区域并以低于第一冷却速率的第二冷却速率对第二区域进行空气冷却来选择性地冷却热锻钢件。
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公开(公告)号：US20220195550A1
公开(公告)日：2022-06-23
申请号：US17133251
申请日：2020-12-23
Applicant: Caterpillar Inc.
Inventor： Matthew Thomas Kiser , Lindsey S. Cavanaugh , Thomas Marshall Congdon , Susan Marie Graham , Tianjun Liu , Mark David Veliz , Thomas John Yaniak
Abstract: An example track shoe, cutting edge, or other component of a machine 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 250° C. to about 1100° 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 may have a hardness between about 40 HRC and 55 HRC.
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公开(公告)号：US11028457B2
公开(公告)日：2021-06-08
申请号：US15651089
申请日：2017-07-17
Applicant: Caterpillar Inc.
Inventor： Tianjun Liu
Abstract: A method of heat treating a fastening member having a head portion, a shank portion, and a thread portion includes hardening the fastening member to a first hardness value. Hardening of the fastening member includes heating the fastening member at a first pre-set temperature value. The method also includes tempering the fastening member at a second pre-set temperature value to a second hardness value. The method further includes induction tempering the thread portion of the fastening member. Induction tempering of the thread portion includes heating the thread portion at a third pre-set temperature value to a third hardness value. The third hardness value of the thread portion is less than the second hardness value of the head portion and the shank portion.
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公开(公告)号：US09440693B2
公开(公告)日：2016-09-13
申请号：US14220971
申请日：2014-03-20
Applicant: CATERPILLAR INC.
Inventor： Tianjun Liu , Matthew Thomas Kiser
IPC: C21D8/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/18 , B62D55/20 , C21D9/00 , C22C38/12 , C22C38/14 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C21D7/13
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 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 including a first region and a second region. The method yet further includes selectively cooling the hot forged steel part by air cooling the first region at a first cooling rate and air cooling the second region 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来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和第二区域的钢部件。 该方法还包括通过以第一冷却速率空气冷却第一区域并以低于第一冷却速率的第二冷却速率对第二区域进行空气冷却来选择性地冷却热锻钢件。
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