Invention Grant
- Patent Title: Method of treating a crankshaft
- Patent Title (中): 曲轴的处理方法
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Application No.: US12305934Application Date: 2007-05-03
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Publication No.: US08222577B2Publication Date: 2012-07-17
- Inventor: Reine Gustafsson , Sture Alm
- Applicant: Reine Gustafsson , Sture Alm
- Applicant Address: FI Vaasa
- Assignee: Wärtsilä Finland Oy
- Current Assignee: Wärtsilä Finland Oy
- Current Assignee Address: FI Vaasa
- Agency: Chernoff, Vilhauer, McClung & Stenzel
- Priority: FI20065434 20060622
- International Application: PCT/FI2007/050244 WO 20070503
- International Announcement: WO2007/147930 WO 20071227
- Main IPC: H05B6/10
- IPC: H05B6/10 ; C21D9/30
Abstract:
Method for treating a crank pin of a crank shaft. In the method hardness of the crank pin surface is measured and when the hardness is over a predetermined limit value, depth of the hard spot is measured. Heat treatment parameters are determined at least on the basis of the depth measurement and the hard spot is heat treated. During the heat treatment the hard spot is heated by an induction heating device.
Public/Granted literature
- US20100012648A1 METHOD OF TREATING A CRANKSHAFT Public/Granted day:2010-01-21
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