US2021101194A1PendingUtilityA1

Piercer plug

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Assignee: NIPPON STEEL CORPPriority: Mar 14, 2018Filed: Jan 18, 2019Published: Apr 8, 2021
Est. expiryMar 14, 2038(~11.7 yrs left)· nominal 20-yr term from priority
C22C 38/04C23C 4/11B21B 19/04C22C 38/12B21B 25/00C23C 4/06C22C 38/02C23C 4/129C23C 4/131C22C 38/08C22C 38/00C23C 4/123C23C 30/00
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Claims

Abstract

A piercer plug with increased wear resistance is provided. A piercer plug includes: a plug body; and a sprayed coating formed on the surface of the plug body. The sprayed coating contains an iron-based alloy and oxides thereof. The chromium concentration determined by analyzing the sprayed coating with X-ray fluorescence analysis is 3 to 20 mass %.

Claims

exact text as granted — not AI-modified
1 . A piercer plug, comprising:
 a plug body; and   a sprayed coating formed on a surface of the plug body,   the sprayed coating containing an iron-based alloy and an oxide of the iron-based alloy,   a chromium concentration determined by analyzing the sprayed coating with X-ray fluorescence analysis being 3 to 20 mass %.

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