Patent · US Active

Method of treating a crankshaft

US8222577B2 · kind B2 · utility

2Cited by

6References

14Claims

0Family size

Assignee

WÄRTSILÄ FINLAND OY · FI

Inventors

Reine Gustafsson · Säter, SE
Sture Alm · Lidköping, SE

Key dates

Filing date	May 3, 2007
Grant date	Jul 17, 2012
Priority date	—
Expiry date	Jan 29, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.