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    Welding material for low chromium (Cr) ferritic steel having high toughness
    1.
    发明授权
    Welding material for low chromium (Cr) ferritic steel having high toughness 失效
    具有高韧性的低铬（Cr）铁素体钢的焊接材料

    公开(公告)号：US5945064A

    公开(公告)日：1999-08-31

    申请号：US57813

    申请日：1998-04-09

    申请人： Nobuyoshi Komai ,  Takayuki Kawano ,  Fujimitsu Masuyama ,  Iwami Ishihara ,  Tomomitsu Yokoyama

    发明人： Nobuyoshi Komai ,  Takayuki Kawano ,  Fujimitsu Masuyama ,  Iwami Ishihara ,  Tomomitsu Yokoyama

    IPC分类号： C22C38/00 ,  B23K35/30 ,  C22C38/22 ,  C22C38/32 ,  C22C38/54 ,  F28F21/08 ,  C22C38/44 ,  C22C38/48

    CPC分类号： F28F21/082 ,  B23K35/308 ,  C22C38/22 ,  C22C38/32

    摘要： This invention provides a welding material for low chromium (Cr) ferritic heat-resisting steel having high toughness, wherein the chemical composition of welding metal comprises, in weight %, carbon (c) 0.04-0.1%, silicon (Si) 0.1-0.6%, manganese (Mn) 0.1-0.6%, phosphorus (P) 0.0005-0.03%, sulfur (S) 0.0005-0.015%, chromium (Cr) 1.75-2.5%, nickel (Ni) 0.01-0.8%, molybdenum (Mo) 0.05-1.5%, vanadium (V)0.01-0.5%, tungsten (W) 0.05-2%, niobium (Nb) 0.01-0.2%, tantalum (Ta) 0.01-0.5%, aluminum (Al) 0.003-0.05%, boron (B) 0.0001-0.01%, nitrogen (N) 0.003-0.03%, and the remainder comprises iron and inevitable impurities. The welding material satisfies the following formula: C+Cr/20+Mo/15+V/10+W/7+5B.ltoreq.0.8%. According to this invention, the welding material is suitable for welding low Cr ferritic heat-resisting steels having high strength such as those used in steam generators and heat exchangers of boilers, etc. which are exposed to high temperatures and high pressures, more particularly, at a high temperature of 500.degree. C. or more.

    摘要翻译： 本发明提供一种具有高韧性的低铬（Cr）铁素体耐热钢的焊接材料，其中焊接金属的化学组成按重量％计含有碳（c）0.04-0.1％，硅（Si）0.1-0.6 ％，锰（Mn）0.1-0.6％，磷（P）0.0005-0.03％，硫（S）0.0005-0.015％，铬（Cr）1.75-2.5％，镍（Ni）0.01-0.8％ ）0.05-1.5％，钒（V）0.01-0.5％，钨（W）0.05-2％，铌（Nb）0.01-0.2％，钽（Ta）0.01-0.5％，铝（Al）0.003-0.05％ ，硼（B）0.0001-0.01％，氮（N）0.003-0.03％，其余为铁和不可避免的杂质。 焊接材料满足下列公式：C + Cr / 20 + Mo / 15 + V / 10 + W / 7 + 5B≤0.8％。 根据本发明，焊接材料适用于焊接高温度的低Cr铁素体耐热钢，例如在高温高压的蒸汽发生器和锅炉等的热交换器中使用的低铁素体耐热钢，更具体地说， 在500℃以上的高温下。

    Welding materials for high-Cr steels
    2.
    发明授权
    Welding materials for high-Cr steels 有权
    高Cr钢焊接材料

    公开(公告)号：US06290904B1

    公开(公告)日：2001-09-18

    申请号：US09234184

    申请日：1999-01-20

    申请人： Takayuki Kawano ,  Kaneyasu Ishikawa ,  Nobuhiko Nishimura ,  Iwami Ishihara ,  Mitsushige Kumou ,  Tamao Takatsu ,  Takashi Inami

    发明人： Takayuki Kawano ,  Kaneyasu Ishikawa ,  Nobuhiko Nishimura ,  Iwami Ishihara ,  Mitsushige Kumou ,  Tamao Takatsu ,  Takashi Inami

    IPC分类号： C22C3820

    CPC分类号： B23K35/308 ,  C22C38/04 ,  C22C38/16 ,  C22C38/18 ,  C22C38/22 ,  C22C38/26

    摘要： This invention relates to welding materials for high-Cr steels which exhibit higher toughness and improved creep characteristics. Specifically, this invention relates to a welding material for high-Cr steels which contains, on a weight percentage basis, 0.03 to 0.12% C, up to 0.3% Si, 0.2 to 1.5% Mn, up to 0.02% P, up to 0.01% S, 8 to 13% Cr, 0.5 to 3% Mo, up to 0.75% Ni, 0.15 to 0.3% V, up to 0.01% Nb, 0.05 to 0.3% Ta, 0.1 to 2.5% W, 0.01 to 0.75% Cu, up to 0.03% Al, 0.002 to 0.005% B, up to 0.015% N, and up to 0.01% O, the balance being Fe and incidental impurities. It also relates to such welding materials wherein W is optionally excluded from the aforesaid composition, wherein W is excluded and 0.1 to 3% Co is added, or wherein 0.1 to 3% Co is added to the aforesaid composition.

    摘要翻译： 本发明涉及高Cr钢的焊接材料，其具有较高的韧性和改善的蠕变特性。 具体而言，本发明涉及一种高Cr钢的焊接材料，其重量百分比含有0.03〜0.12％C，0.3％以下的Si，0.2〜1.5％的Mn，0.02％以下的P，0.01以下 ％S，8〜13％Cr，0.5〜3％Mo，最高0.75％Ni，0.15〜0.3％V，0.01％Nb，0.05％〜0.3％Ta，0.1％〜2.5％W，0.01％〜0.75％Cu ，高达0.03％的Al，0.002至0.005％的B，至多0.015％的N，和至多0.01％的O，余量为Fe和杂质。 还涉及这样的焊接材料，其中W可以从上述组合物中排除，其中W被排除并且添加0.1-3％的Co，或者其中0.1至3％的Co被加入到上述组合物中。