<p>Method for treating a crank pin (4) of a crank shaft (1). In the method hardness of the crank pin (4) surface is measured and when the hardness is over a predetermined limit value, depth of the hard spot (10) is measured. Heat treatment parameters are determined at least on the basis of the depth measurement and the hard spot (10) is heat treated. During the heat treatment the hard spot (10) is heated by an induction heating device (5).</p>
申请公布号
WO2007147930(A1)
申请公布日期
2007.12.27
申请号
WO2007FI50244
申请日期
2007.05.03
申请人
WAERTSILAE FINLAND OY;GUSTAFSSON, REINE;ALM, STURE