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    • 5. 发明授权
    • Welding material for austenite stainless steel having high Si content
and method of application
    • 具有高Si含量的奥氏体不锈钢焊接材料和应用方法
    • US4653684A
    • 1987-03-31
    • US650763
    • 1984-09-12
    • Kiichi SaitoMasahiro AokiNoriyasu IkedaMasayoshi MikiMasaaki Nagayama
    • Kiichi SaitoMasahiro AokiNoriyasu IkedaMasayoshi MikiMasaaki Nagayama
    • B23K35/30C22C38/34B23K35/22C22C38/40
    • B23K35/3086
    • This invention relates to a welding material for welding a high-Si austenite stainless steel, capable of ensuring a high corrosion resistance of the weld metal in hot nitric acid of high concentration, while maintaining a toughness of the weld metal not smaller than 2 Kg-m/cm.sup.2, and the method of application therefor. The welding material has a composition containing not greater than 0.015% of C, 5 to 7% of Si, not greater than 2% of Mn, 15 to 20% of Cr, 10 to 22% of Ni, not greater than 0.02% of N, not greater than 0.45% of one or both of Nb and Ta, and the balance substantially Fe and inevitable impurities the sum of C and N contents is selected to be not greater than 0.03% and the sum of Nb and Ta contents is selected to be not smaller than 15.times.(C+N)%. The Ni-balance value given by the following formula ranges between -4 and -2.Ni balance value=% Ni+30(%C+%N)+0.5(%Mn)-1.1(%Cr+1.5.times.%Si)+8.2
    • 本发明涉及一种用于焊接高Si奥氏体不锈钢的焊接材料,其能够确保焊接金属在高浓度热硝酸中的高耐蚀性,同时保持焊接金属的韧性不小于2Kg- m / cm 2及其应用方法。 该焊接材料的组成为:C:不大于0.015%,Si:5〜7%,Mn:2%以下,Cr:15〜20%,Ni:10〜22%,Ni: N,不大于Nb和Ta中的一种或两种的0.45%,余量基本上为Fe和不可避免的杂质,C和N含量的总和被选择为不大于0.03%,并且选择Nb和Ta的总和 不小于15x(C + N)%。 由以下公式给出的Ni平衡值范围介于-4和-2之间。 Ni平衡值=%Ni + 30(%C +%N)+0.5(%Mn)-1.1(%Cr + 1.5x%Si)+8.2