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：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：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.