| 摘要 |
PROBLEM TO BE SOLVED: To provide a cladding by welding tool for plastic working of a roll, etc., excellent in wear resistance in hot/cold rolling, crack resistance and corrosion resistance. SOLUTION: A plasma welding material and a tool material welded with the melding material are constituted of a composition consisting of Fe, C, Cr, V, Mo, W, Nb, Ta, Zr, Al and lanthanides elements. By specifying an area rate of a MC carbide and a crystallization grain size of the MC carbide, better wear resistance/crack resistance/corrosion resistance effects can be exhibited.
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