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公开(公告)号：US20220090253A1
公开(公告)日：2022-03-24
申请号：US17149411
申请日：2021-01-14
发明人： Min-Woo Kang , Soon-Woo Kwon , Min-Woo Kang , Hyun-Ki Kim , Dong-Hwi Kim , In-Beom Lee , Chung-An Lee , Seung-Hyun Hong
IPC分类号： C23C8/22 , C22C38/44 , C22C38/02 , C22C38/04 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
摘要： A carburizing steel includes, based on a total wt % of the carburizing steel: 0.1 wt % or more and 0.3 wt % or less of C (carbon); 2.0 wt % or more and 2.7 wt % or less of Cr (chrome); 0.4 wt % or more of Si (silicon); 0.3 wt % or more and 0.7 wt % or less of Mo (molybdenum); less than 0.7 wt % of Mn (manganese); and 0.6 wt % or more and 1.5 wt % or less of Ni (nickel).
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公开(公告)号：US20220178010A1
公开(公告)日：2022-06-09
申请号：US17175384
申请日：2021-02-12
发明人： Dong-Hwi Kim , Soon-Woo Kwon , Chung-An Lee , Hyun-Ki Kim , Seung-Hyun Hong , Min-Woo Kang
IPC分类号： C23C8/26
摘要： A heat treatment method of a component for a vehicle includes: heating an inner space of a heat treatment furnace in which a component for a vehicle is disposed in the inner space; stabilizing hydrogen (H2) by injecting the H2 into the inner space; and performing nitrification heat treatment for the component by injecting only ammonia (NH3) into the inner space after the stabilizing. The heat treatment method may adjust the degree of vacuum and the flow rate instead of a Kn without additionally injecting the H2 gas into an NH3 gas, thereby implementing the nitrification heat treatment of a quality similar to that of a conventional nitrification heat treatment for a short time.
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公开(公告)号：US11542573B2
公开(公告)日：2023-01-03
申请号：US16786063
申请日：2020-02-10
发明人： Min-Woo Kang , Soon-Woo Kwon , Chung-An Lee , Seung-Hyun Hong , Young-Nam Kim
IPC分类号： C22C9/06 , C22C30/02 , B23K26/352 , B23K26/34
摘要： A composition of a copper alloy for a laser cladding valve sheet is disclosed. The copper alloy includes a matrix structure and a hard phase, which includes 12 to 24 wt % of Ni, 2 to 4 wt % of Si, 8 to 30 wt % of Fe, more than 5 wt % and less than 10 wt % of Mo, 2 to 10 wt % of Al, and the balance Cu. The interfacial delamination may be suppressed in a fatigue environment by micronizing the hard phase and the distribution thereof, thereby improving fatigue resistance and wear resistance.
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公开(公告)号：US11479842B2
公开(公告)日：2022-10-25
申请号：US17175384
申请日：2021-02-12
发明人： Dong-Hwi Kim , Soon-Woo Kwon , Chung-An Lee , Hyun-Ki Kim , Seung-Hyun Hong , Min-Woo Kang
IPC分类号： C23C8/26
摘要： A heat treatment method of a component for a vehicle includes: heating an inner space of a heat treatment furnace in which a component for a vehicle is disposed in the inner space; stabilizing hydrogen (H2) by injecting the H2 into the inner space; and performing nitrification heat treatment for the component by injecting only ammonia (NH3) into the inner space after the stabilizing. The heat treatment method may adjust the degree of vacuum and the flow rate instead of a Kn without additionally injecting the H2 gas into an NH3 gas, thereby implementing the nitrification heat treatment of a quality similar to that of a conventional nitrification heat treatment for a short time.
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公开(公告)号：US20210115535A1
公开(公告)日：2021-04-22
申请号：US16786063
申请日：2020-02-10
发明人： Min-Woo Kang , Soon-Woo Kwon , Chung-An Lee , Seung-Hyun Hong , Young-Nam Kim
IPC分类号： C22C9/06
摘要： A composition of a copper alloy for a laser cladding valve sheet is disclosed. The copper alloy includes a matrix structure and a hard phase, which includes 12 to 24 wt % of Ni, 2 to 4 wt % of Si, 8 to 30 wt % of Fe, more than 5 wt % and less than 10 wt % of Mo, 2 to 10 wt % of Al, and the balance Cu. The interfacial delamination may be suppressed in a fatigue environment by micronizing the hard phase and the distribution thereof, thereby improving fatigue resistance and wear resistance.
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