| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat resistant and wear resistant composite structural member used for the one to be subjected to temperature and loads such as a guide roll and a roll for rolling used at a rolling factory in an iron making field and to provide its producing method. SOLUTION: In this heat resistant and wear resistant composite structural member, powder having a componential composition containing, by mass, 0.9 to 2.5% C, 0.15 to 1.5% Si, 0.1 to 2.0% Mn, 3.5 to 12.0% Cr, 3.0 to 10.0% Mo, 0.8 to 8.0% V and 1.0 to 10.0% W, furthermore containing one or more kinds selected from 0.5 to 3.0% Ni, 0.8 to 8.0% Nb and 1.0 to 12.0% Co, and the balance Fe with inevitable impurities is formed on the outside of a base metal composed of carbon steel as a first HIP treated layer, and, on the outer layer of the first HIP treated layer, a second HIP treated layer composed of a powdery mixture consisting of the powder of one or more kinds among metallic carbide, nitride, oxide and boride of 5 to 30% by total volume ratio and the balance powder of above components is formed. Moreover, the producing method uses the same.
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