发明申请
- 专利标题: HIGH CARBON STEEL SHEET SUPERIOR IN FATIUGUE LIFEAND MANUFACTURING METHOD THEREOF
- 专利标题(中): 高碳钢生产线的高碳钢制造方法
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申请号: US12600161申请日: 2007-12-27
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公开(公告)号: US20100218859A1公开(公告)日: 2010-09-02
- 发明人: Han-Chul Shin , Sung-Jin Kim , Kyong-Su Park , Kee-Cheol Park
- 申请人: Han-Chul Shin , Sung-Jin Kim , Kyong-Su Park , Kee-Cheol Park
- 优先权: KR10-2007-0055199 20070605
- 国际申请: PCT/KR2007/006863 WO 20071227
- 主分类号: C21D8/02
- IPC分类号: C21D8/02 ; C22C38/20 ; C22C38/18 ; C22C38/22 ; C22C38/04
摘要:
The present invention relates to a high carbon steel sheet that is superior in fatigue life and a method of manufacturing the high carbon steel sheet. The high carbon steel sheet includes about 0.75 wt % to about 0.95 wt % of carbon, smaller than about 1.8 wt % of silicon, about 0.1 wt % to about 1.5 wt % of manganese, about 0.1 wt %˜1.0 wt % of chromium, smaller than about 0.02 wt % of phosphorus, smaller than about 0.02 wt % of sulfur, a residual amount of iron, and inevitable impurities. A layer interval between laminar carbides included in the high carbon steel sheet is smaller than about 0.5 μm. The high carbon steel sheet may include a fine pearlite having a lamellar structure. The fine pearlite included in the high carbon steel sheet may have a volume percentage of larger than about 90%. A ratio of length to width of the lamellar structure may be larger than about 10:1.