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US 2015/0125630 A1Published application
Method for producing a plug for hot tube-making
AssigneeNippon Steel & Sumitomo Metal Corporation
InventorsYasuyoshi Hidaka, Yasuto Higashida, Kazuhiro Shimoda
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Abstract
A plug for hot tube-making having a sprayed coating resistant to peeling is provided. A method for producing a plug for hot tube-making according to the present embodiment includes a step of preparing a plug whose surface includes a sprayed coating formed thereon, the sprayed coating containing iron and an iron oxide; and a heat treatment step during which the plug is kept at 400° C. to 550° C. for 5 to 60 minutes.
Claims2
A method for producing a plug for hot tube-making, comprising
- a step of preparing a plug whose surface includes a sprayed coating formed thereon, the sprayed coating containing iron and an iron oxide;
- and
- a heat treatment step during which the plug is kept at 400° C. to 550° C. for 5 to 60 minutes.
Dependencies are inferred from the claim text.