公开(公告)号：US11198920B2

公开(公告)日：2021-12-14

申请号：US16691951

申请日：2019-11-22

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Hyundai Steel Company

发明人： Jae-Yoon Hwang ,  Min-Woo Kang ,  Shin-Woong Jeong ,  Soon-Jae Won ,  Sang-Min Song ,  Seung-Hyun Hong ,  Min-Woo Kang

IPC分类号： C21D9/52 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C21D1/32 ,  B21B3/00 ,  C21D6/00 ,  C23C8/32 ,  C23C8/80 ,  C21D8/06

摘要： Disclosed is a method for manufacturing high-carbon bearing steel, which include: heating a billet at a temperature of about 950 to 1,050° C. for about 70 to 120 minutes, rolling the billet to manufacture a wire rod, winding the wire rod to manufacture a wire rod coil, cooling the wire rod coil, and subsequently heat treating the wire rod coil for spheroidizing and carbonitriding, respectively. The bearing steel may include an amount of about 0.9 to 1.3 wt % of carbon (C), an amount of about 1.1 to 1.6 wt % of silicon (Si), an amount of about 1.0 to 1.5 wt % of manganese (Mn), an amount of about 1.5 to 1.9 wt % of chromium (Cr), an amount of about 0.2 to 0.6 wt % of nickel (Ni), an amount of about 0.1 to 0.3 wt % of molybdenum (Mo), and the balance iron (Fe) based on the total weight thereof.

公开(公告)号：US20200377965A1

公开(公告)日：2020-12-03

申请号：US16691951

申请日：2019-11-22

申请人： Hyundai Motor Company ,  Kia Motors Corporation ,  Hyundai Steel Company

发明人： Jae-Yoon Hwang ,  Min-Woo Kang ,  Shin-Woong Jeong ,  Soon-Jae Won ,  Sang-Min Song ,  Seung-Hyun Hong ,  Min-Woo Kang

IPC分类号： C21D9/52 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C21D1/32 ,  C21D8/06 ,  C21D6/00 ,  C23C8/32 ,  C23C8/80 ,  B21B3/00

摘要： Disclosed is a method for manufacturing high-carbon bearing steel, which include: heating a billet at a temperature of about 950 to 1,050° C. for about 70 to 120 minutes, rolling the billet to manufacture a wire rod, winding the wire rod to manufacture a wire rod coil, cooling the wire rod coil, and subsequently heat treating the wire rod coil for spheroidizing and carbonitriding, respectively. The bearing steel may include an amount of about 0.9 to 1.3 wt % of carbon (C), an amount of about 1.1 to 1.6 wt % of silicon (Si), an amount of about 1.0 to 1.5 wt % of manganese (Mn), an amount of about 1.5 to 1.9 wt % of chromium (Cr), an amount of about 0.2 to 0.6 wt % of nickel (Ni), an amount of about 0.1 to 0.3 wt % of molybdenum (Mo), and the balance iron (Fe) based on the total weight thereof.

公开(公告)号：US20220064755A1

公开(公告)日：2022-03-03

申请号：US17523247

申请日：2021-11-10

申请人： Hyundai Motor Company ,  Kia Corporation ,  Hyundai Steel Company

发明人： Jae-Yoon Hwang ,  Min-Woo Kang ,  Shin-Woong Jeong ,  Soon-Jae Won ,  Sang-Min Song ,  Seung-Hyun Hong ,  Min-Woo Kang

IPC分类号： C21D9/52 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  C21D1/32 ,  B21B3/00 ,  C21D6/00 ,  C23C8/32 ,  C23C8/80 ,  C21D8/06

摘要： Disclosed is a method for manufacturing high-carbon bearing steel, which include: heating a billet at a temperature of about 950 to 1,050° C. for about 70 to 120 minutes, rolling the billet to manufacture a wire rod, winding the wire rod to manufacture a wire rod coil, cooling the wire rod coil, and subsequently heat treating the wire rod coil for spheroidizing and carbonitriding, respectively. The bearing steel may include an amount of about 0.9 to 1.3 wt % of carbon (C), an amount of about 1.1 to 1.6 wt % of silicon (Si), an amount of about 1.0 to 1.5 wt % of manganese (Mn), an amount of about 1.5 to 1.9 wt % of chromium (Cr), an amount of about 0.2 to 0.6 wt % of nickel (Ni), an amount of about 0.1 to 0.3 wt % of molybdenum (Mo), and the balance iron (Fe) based on the total weight thereof.

公开(公告)号：US20220090253A1

公开(公告)日：2022-03-24

申请号：US17149411

申请日：2021-01-14

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

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).

公开(公告)号：US11578383B2

公开(公告)日：2023-02-14

申请号：US17523247

申请日：2021-11-10

申请人： Hyundai Motor Company ,  Kia Corporation ,  Hyundai Steel Company

发明人： Jae-Yoon Hwang ,  Min-Woo Kang ,  Shin-Woong Jeong ,  Soon-Jae Won ,  Sang-Min Song ,  Seung-Hyun Hong ,  Min-Woo Kang

IPC分类号： C21D9/52 ,  C22C38/44 ,  C22C38/04 ,  C22C38/02 ,  B21B3/00 ,  C21D1/32 ,  C21D6/00 ,  C23C8/32 ,  C23C8/80 ,  C21D8/06

摘要： Disclosed is a method for manufacturing high-carbon bearing steel, which include: heating a billet at a temperature of about 950 to 1,050° C. for about 70 to 120 minutes, rolling the billet to manufacture a wire rod, winding the wire rod to manufacture a wire rod coil, cooling the wire rod coil, and subsequently heat treating the wire rod coil for spheroidizing and carbonitriding, respectively. The bearing steel may include an amount of about 0.9 to 1.3 wt % of carbon (C), an amount of about 1.1 to 1.6 wt % of silicon (Si), an amount of about 1.0 to 1.5 wt % of manganese (Mn), an amount of about 1.5 to 1.9 wt % of chromium (Cr), an amount of about 0.2 to 0.6 wt % of nickel (Ni), an amount of about 0.1 to 0.3 wt % of molybdenum (Mo), and the balance iron (Fe) based on the total weight thereof.

公开(公告)号：US20220178010A1

公开(公告)日：2022-06-09

申请号：US17175384

申请日：2021-02-12

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

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.

公开(公告)号：US10590524B2

公开(公告)日：2020-03-17

申请号：US15660695

申请日：2017-07-26

申请人： Hyundai Motor Company ,  Kia Motors Corporation

发明人： Jae-Hong Park ,  Min-Woo Kang ,  Jae-Woon Hwang ,  Hyun-Kyu Kim

IPC分类号： C23C8/22 ,  C21D8/00 ,  C21D7/04 ,  C22C38/26 ,  C22C38/24 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C21D6/00 ,  C23C8/80

摘要： Provided herein is an alloy steel in which carburization is prevented by a processing load, the alloy steel including: about 0.13 to 0.25 wt % of carbon (C), about 0.6 to 1.5 wt % of silicon (Si), about 0.6 to 1.5 wt % of manganese (Mn), about 1.5 to 3.0 wt % of chromium (Cr), about 0.01 to 0.1 wt % of niobium (Nb), about 0.01 to 0.1 wt % of aluminum (Al), about 0.05 to 0.5 wt % of vanadium (V), the balance iron (Fe), and impurities, based on the total weight of the alloy steel.

公开(公告)号：US11542573B2

公开(公告)日：2023-01-03

申请号：US16786063

申请日：2020-02-10

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

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.

公开(公告)号：US11479842B2

公开(公告)日：2022-10-25

申请号：US17175384

申请日：2021-02-12

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

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.

公开(公告)号：US20210115535A1

公开(公告)日：2021-04-22

申请号：US16786063

申请日：2020-02-10

申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

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.