基本信息:
- 专利标题： METHOD FOR PRODUCING A CRANKSHAFT, IN PARTICULAR FOR DIESEL ENGINES
- 专利标题（中）：用于生产柴油发动机特别的起重机的方法
- 申请号：PCT/IB2008000911 申请日：2008-04-14
- 公开(公告)号：WO2008125964A8 公开(公告)日：2009-12-17
- 发明人： GUERREIRO SERGIO STAFANO
- 申请人： THYSSENKRUPP METALURGICA CAMPO LIMPO LTDA , GUERREIRO SERGIO STAFANO
- 专利权人： THYSSENKRUPP METALURGICA CAMPO LIMPO LTDA,GUERREIRO SERGIO STAFANO
- 当前专利权人： THYSSENKRUPP METALURGICA CAMPO LIMPO LTDA,GUERREIRO SERGIO STAFANO
- 优先权： DE102007018230 2007-04-16
- 主分类号： C21D5/00
- IPC分类号： C21D5/00 ; C21D1/18 ; C21D9/30 ; F16C3/04
摘要：
The invention relates to a method for producing a crankshaft, in special for diesel engines, wherein a crankshaft blank is produced from austempered ductile cast iron, the casting blank is subjected to heat treatment matched to the austempered ductile cast iron whereby the blank acquires high strength and hardness. According to the invention, surfaces which form bearing surfaces for connecting rods and shaft bearings are undersized before the ADI heat treatment. Following the heat treatment a coating is applied to the bearing surfaces, the layer thickness being matched to the undersize and dimensional deviations as a result of the heat treatment. The coated bearing surfaces are finally finish-machined to the finished size without the need of machining the bearing sufaces of the casting blank after the heat treatment.
摘要（中）：
本发明涉及一种特殊用于柴油发动机的曲轴生产方法，其中曲轴坯料由奥氏体球墨铸铁制成，铸坯经受与奥氏体球墨铸铁相匹配的热处理，由此坯料获得高强度 和硬度。 根据本发明，在ADI热处理之前，形成用于连杆和轴承的支承面的表面是不足的。 在热处理之后，将涂层施加到轴承表面，由于热处理，层厚度与尺寸和尺寸偏差相匹配。 经涂覆的轴承表面最终被精加工成最终尺寸，而不需要在热处理后加工铸坯的轴承面。