FAILURE ANALYSIS OF THE EXHAUST VALVE FACE IN DIESEL MARINE ENGINE

被引：1
|
作者：
Smolenska, H. [1 ]
Konczewicz, W. [2 ]
机构：
[1] Gdansk Univ Technol, Fac Mech Engn, Dept Mat Sci & Engn, Gdansk, Poland
[2] Gdynia Maritime Univ, Dept Mech Engn, Gdynia, Poland
来源：
ADVANCES IN MATERIALS SCIENCE | 2010年 / 10卷 / 02期
关键词：
cobalt base alloy; laser cladding; wear;
D O I：
10.2478/v10077-010-0006-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The exhaust valve from marine diesel engine which was damaged after 2000 hours of service was investigated. In order to prolong the service time the valve face was cladded with cobalt base alloy using laser technique. After failure microstructural and chemical analyses reviled that cladding process was conducted improperly. The chemical composition of the clad layer was far from the designed one and what more completely inhomogeneous. As a result the valve presented different properties in different regions which led to premature failure.
引用
收藏
页码：11 / 18
页数：8
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