TWI642793B

Provided are a roll outer layer material and a composite roll for rolling that have remarkably improved abrasion resistance. A roll outer layer material that has a W-Co-based alloy composition: that is a graded composition in which W content decreases in the radial direction from an outer circumfere...

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Bibliographic Details
Main Authors ICHINO, KENJI, MOCHIDA, TETSUO, ISHIDA, KIYOHITO, OHNUMA, IKUO, SUZUKI, TAKESHI, IWATA, NAOMICHI
Format Patent
LanguageChinese
Published 01.12.2018
Subjects
ALLOYS
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
PERFORMING OPERATIONS
POWDER METALLURGY
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:Provided are a roll outer layer material and a composite roll for rolling that have remarkably improved abrasion resistance. A roll outer layer material that has a W-Co-based alloy composition: that is a graded composition in which W content decreases in the radial direction from an outer circumferential side toward an inner circumferential side; and that, at an outer layer material surface that is located at a maximum diameter during rolling, contains, by mass%, 25%-70% of W, 5%-45% of Co, 0.6%-3.5% of C, 0.05%-3% of Si, 0.05%-3% of Mn, and 1%-15% of Mo, the remainder being unavoidable impurities.
Bibliography:Application Number: TW20170125999