Shot-blasted steam boiler members, steam boiler assemblies or power station components
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United States of America Patent
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Issued Date -
Jun 26, 2008
app pub date -
Dec 21, 2007
filing date -
Dec 22, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A steam boiler module or steam boiler assembly or a power station component is composed essentially of an alloyed, in particular chromium-containing material and consists, at least in part of a material which has been treated by surface blasting (shot-peening/shot blasting). With steam boilers having outlet temperatures of .gtoreq.700.degree. C. in power station components, in particular steam generator modules, the material provides an adequate strength, in particular long-term rupture strength and an adequate corrosion resistance as well as oxidation resistance. The material has a ferritic or martensitic or austenitic structure having a mean chromium content .ltoreq.18% by weight, and at least a module surface or module group surface or component surface that has been treated, at least in part, by surface blasting (shot-peening/shot blasting).
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