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Title
Verschleissbestaendige Nockenwelle und Verfahren zu ihrer Herstellung
Date Issued
2001
Author(s)
Brenner, B.
Wetzig, A.
Naunapper, D.
Duschek, C.
Patent No
1996-19637464
Abstract
The camshaft is made of cast iron, with a boundary layer consisting of a Ledebur remelt layer and a martensitic hardening zone located below it. The remelt layer consists of finely dispersed Ledebur cementite with a wall thicknesses at most equal to 1 mu m and a metal matrix with a phase mixture of martensite and/or bainite, residual austenite, as well as less than 20% of fine-streaked pearlite with a lamellar distance at most equal to 0.1 mu m. The hardening zone consists of a phase mixture of martensite and/or bainite, partly dissolved pearlite and residual austenite. Also claimed is a method for producing the camshaft. USE - In motor vehicle manufacture. ADVANTAGE - Resistance to sliding wear is improved in comparison to that obtainable by known methods.
Language
de
Patenprio
DE 1996-19637464 A: 19960913