| 摘要 |
PURPOSE:To prevent resistance to cracking by reheating, etc. by coating a coating material consisting of prescribed % of metallic oxide to a core wire contg. specific weight % of Ni, Mo, etc. and incorporating further specific % of Si, Mn, etc. into the core wire and coated wire. CONSTITUTION:The coating material contg. 5-25%, in terms of fluoroelement, metallic fluoride is coated on the core wire contg. >=60% Ni and >=1.2-30% Mo and contg. further >=1 kinds of the group consisting of 3-15% Fe, <=5% Cr and <=5% W to constitute a ''Hastelloy'' welding rod. One or both of the core wire and coating material are further incorporated therein with 0.2-1.0% Si, 0.15- 2.0% Mn, 0.10-0.8% Al, 0.02-0.2% Mg and 0.08-0.5% >=1 kinds of the group consisting of Y, Ca and rare earth element calculated by the prescribed formula. The welding with the excellent resistance to cracking by solidification as well as the excellent strength, toughness and resistance to cracking by reheating is made possible by the above-mentioned method. |
