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US 11,479,840 B2Granted
Pass roll for hot-dip galvanized steel sheet manufacturing facility, hot-dip galvanized steel sheet manufacturing facility, and hot-dip galvanized steel sheet manufacturing method
AssigneeNippon Steel Corporation
InventorTooru Oohashi
Life of this patent
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Abstract
A pass roll for a hot-dip galvanized steel sheet manufacturing facility, the pass roll includes: a roll body; and a heat-resistant felt layer covering the roll body, wherein the heat-resistant felt layer has a thermal decomposition temperature of 420° C. or higher and has a surface hardness evaluation index at 400° C. of more than 0.11 μm/N.
Claims20
A pass roll for a hot-dip galvanized steel sheet manufacturing facility, the pass roll comprising:
- a roll body;
- and
- a heat-resistant felt layer covering the roll body, wherein
- the heat-resistant felt layer is in direct contact with a surface of the roll body and has a thermal decomposition temperature of 420° C. or higher and has a surface hardness evaluation index at 400° C. of more than 0.11 μm/N and 100 μm/N or less.
1 more element
Dependencies are inferred from the claim text.