High temperature oxidation resistant grid section and preparation method thereof

The invention provides a high temperature oxidation resistant grid section, comprising the following components by weight percent: 0.3-0.6% of C, 0.2-0.4% of N, 22-25% of Cr, 0.3-0.5% of Si, 3-4% of Mn, 6-8% of Ni, 0.001-0.002% of B, less than 0.01% of Zr, the balance Fe. The grid section of the inv...

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Bibliographic Details
Main Authors DENG JIA, ZHANG WENXIANG, LIU WEIFENG, DENG SUN
Format Patent
LanguageChinese
English
Published 15.02.2012
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
METALLURGY OF IRON
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL
TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The invention provides a high temperature oxidation resistant grid section, comprising the following components by weight percent: 0.3-0.6% of C, 0.2-0.4% of N, 22-25% of Cr, 0.3-0.5% of Si, 3-4% of Mn, 6-8% of Ni, 0.001-0.002% of B, less than 0.01% of Zr, the balance Fe. The grid section of the invention is prepared by adopting melting, refining, alloying and casting stages. The grid section of the invention has high rigidity and better impact property, distortion resistance capacity at high temperature is improved, and meanwhile corrosion resistance is also improved, and the oxidation film of the grid section of the invention contains no Mn3O4, so that the oxidation film thereof is stable at high temperature and has better compactness and continuity, bonding degree with base material is higher, and the grid section has excellent oxidation resistance and is superior to the existing grid section.
Bibliography:Application Number: CN20101161371