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首页> 外国专利> WELDING MATERIAL FOR FERRITE HEAT-RESISTANT STEEL, WELDING JOINT FOR FERRITE HEAT-RESISTANT STEEL, AND METHOD FOR PRODUCING WELDING JOINT FOR FERRITE HEAT-RESISTANT STEEL

WELDING MATERIAL FOR FERRITE HEAT-RESISTANT STEEL, WELDING JOINT FOR FERRITE HEAT-RESISTANT STEEL, AND METHOD FOR PRODUCING WELDING JOINT FOR FERRITE HEAT-RESISTANT STEEL

机译：铁素体耐热钢的焊接材料，铁素体耐热钢的焊接接头以及铁素体耐热钢的焊接接头的制造方法

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摘要

An objective of the present invention is to provide a welding material for ferritic heat-resistant steel, a welded joint for ferritic heat-resistant steel, and a method for producing a welded joint for ferritic heat-resistant steel that are capable of forming a weld metal having a high creep strength and a high toughness in welding a ferritic heat-resistant steel that contains B. A welding material for ferritic heat-resistant steel according to the present embodiment has a chemical composition containing, in mass %, C: 0.06 to 0.10%, Si: 0.1 to 0.4%, Mn: 0.3 to 0.7%, Co: 2.6 to 3.4%, Ni: 0.01 to 1.10%, Cr: 8.5 to 9.5%, W: 2.5 to 3.5%, Nb: 0.02 to 0.08%, V: 0.1 to 0.3%, Ta: 0.02 to 0.08%, B: 0.007 to 0.015%, and N: 0.005 to 0.020%, with the balance being Fe and impurities, and satisfying Formula (1): 0.5 ‰¤ Cr + 6 Si + 1.5 W + 11 V + 5 Nb + 10 B ˆ’ 40 C ˆ’ 30 N ˆ’ 4 Ni ˆ’ 2 Co ˆ’ 2 Mn ‰¤ 10.0
机译：本发明的目的是提供一种能够形成焊缝的铁素体耐热钢用焊接材料，铁素体耐热钢用焊接接头以及制造方法。在焊接含有B的铁素体耐热钢时，具有高蠕变强度和高韧性的金属。本实施方式的铁素体耐热钢用焊接材料的化学组成以质量％计为C：0.06〜0.06。 0.10％，Si：0.1至0.4％，Mn：0.3至0.7％，Co：2.6至3.4％，Ni：0.01至1.10％，Cr：8.5至9.5％，W：2.5至3.5％，Nb：0.02至0.08 ％，V：0.1〜0.3％，Ta：0.02〜0.08％，B：0.007〜0.015％，N：0.005〜0.020％，余量为Fe和杂质，满足式（1）：0.5‰Cr + 6 Si + 1.5 W + 11 V + 5 Nb + 10 B + 40 C + 30 N + 4 Ni + 2 Co + 2 Mn‰10.0

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