Welding material for overlaying, straightening roll, guide roll, transport roll and anvil

摘要

The purpose of the present invention is to provide a buildup welding material which is capable of suppressing a reduction in thermal crack resistance while having at least one kind of carbide among WC, CrC, and NbC having exceptional abrasion resistance added to a prescribed Ni-based alloy. This buildup welding material comprises a Ni-based alloy and a mixed carbide. The Ni-based alloy comprises, in mass%, 0.1% or less C, 10-15% Cr, 8-15% Mo, 5% or less W, 15% or less Co, 1-5% Al, 1-5% Ti, and 0.01-0.1% N, the balance being Ni and inevitable impurities, and satisfies Cr%/33 + Mo%/25 + W%/31 1. The mixed carbide comprises one kind or more of a first carbide selected from among WC, NbC, VC, and CrC and a second carbide TiC, in which, when the total sum of the Ni-based alloy and the mixed carbide is assumed to be 100% in mass%, the first carbide is 5-50% and the second carbide is 3-30%, the total sum of the first and the second carbide being 10-60%.