Application method of Cr-plated mandrel bar for hot rolling

The present invention provides an application method of a Cr-plated mandrel bar repeatedly used in mandrel mill rolling by the Mannesmann tube making process. A regeneration treatment is performed to use the mandrel bar again as a tool of like size when an opening width H of a surface defect generat...

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Bibliographische Detailangaben
1. Verfasser: Iida, Sumio
Format: Patent
Sprache:eng
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