发明申请
US20110094632A1 LEDEBURITE CAST IRON WITH A HIGH CARBIDE CONTENT AND AN EVENLY DISTRIBUTED GRAPHITE EMBODIMENT
有权
具有高碳含量和偶发分布的石墨实例的LEDEBURITE铸铁
- 专利标题: LEDEBURITE CAST IRON WITH A HIGH CARBIDE CONTENT AND AN EVENLY DISTRIBUTED GRAPHITE EMBODIMENT
- 专利标题(中): 具有高碳含量和偶发分布的石墨实例的LEDEBURITE铸铁
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申请号: US11817752申请日: 2006-02-08
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公开(公告)号: US20110094632A1公开(公告)日: 2011-04-28
- 发明人: Laszlo Pelsoeczy , Wilfried Langner , Hans-Henning Zutz , Thomas Gerle , Franz-J Goebbeis
- 申请人: Laszlo Pelsoeczy , Wilfried Langner , Hans-Henning Zutz , Thomas Gerle , Franz-J Goebbeis
- 优先权: DE102005010090.2 20050304
- 国际申请: PCT/EP2006/001103 WO 20060208
- 主分类号: C22C37/06
- IPC分类号: C22C37/06 ; C21D5/00
摘要:
Disclosed is a cast iron material, especially a ledeburite cast iron material which has a high carbide content of at least 15.0 percent by weight and is provided with a characteristic, free, evenly distributed graphite embodiment that can comprise flake graphite and/or vermicular graphite and/or nodular graphite. The basic matrix can be embodied in a pearlitic and/or bainitic and/or martensitic manner according to the application thereof (diameter (D) of the seal of the running gear, peripheral velocity). The thermal conductivity of the inventive material is three to four times greater than that of white cast materials as a result of the high graphite content, thus advantageously preventing seals of running gears from fretting in case of great peripheral velocities (>5 m/s) and large diameters (D>600 mm) of the seals. Additionally, the high carbide content of at least 15 percent by weight provides for good resistance to wear while additional alloying elements such as chromium, vanadium, molybdenum, and nickel provide the material with adequate resistance to corrosion. The disclosed ledeburite cast iron material featuring an evenly distributed graphite embodiment can be used for producing axial face seals and cylinder hushes, for example.
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