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    • 3. 发明专利
    • Method of producing welding wire
    • 生产焊丝的方法
    • JP2011125874A
    • 2011-06-30
    • JP2009284446
    • 2009-12-15
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • KOYANAGI SADAHIKOUEDA SHIGENORI
    • B23K35/40B23K35/30C22B9/16C22B9/18C22C19/05C22F1/00C22F1/10
    • PROBLEM TO BE SOLVED: To provide a method of producing a welding wire made of Ni-based super alloy excellent in welding property and bonding strength. SOLUTION: A first ingot having a composition which contains, by mass, 0.01% or more and 0.15% or less of C, 1% or less of Si, 1% or less of Mn, 5% or more and 20% or less of Cr, more than 5% and 10% or less of Mo, less than 20% of W, more than 5% and 15% or less of Mo+(1/2)W, 0.8% or more and less than 1.5% of Al, 0.30% or more and 0.85% or less of Ti, more than 1.5% and 3.0% or less of Nb and 4.0% or less of Fe, wherein Al+Ti+Nb is 3.0 atm% or more and 5.9 atm% or less, and wherein the atom% ratio:Nb/(Al+Ti) is 0.35 or more and 0.60 or less, and the balance being Ni and inevitable impurities is obtained by a VIF method, is formed into a second ingot by applying a VAR method and an ESR method and is formed into the welding wire through homogenizing processing, hot working, solid solubilizing processing and wire drawing working. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种焊接性能和接合强度优异的由Ni基超级合金制成的焊丝的制造方法。 解决方案:具有以质量计含有C,1%或更少的Si,1%或更少的Mn,5%或更多和20%的Si的0.01%或更多和0.15% 或更少的Cr,大于5%和10%以下的Mo,小于20%的W,超过5%和15%以下的Mo +(1/2)W,0.8%以上且小于1.5 的Al,0.30%以上且0.85%以下的Ti,超过1.5%,3.0%以下的Nb和4.0%以下的Fe,其中Al + Ti + Nb为3.0atm%以上且5.9atm %以下,并且其中原子%比率:Nb /(Al + Ti)为0.35以上且0.60以下,余量由VIF法获得,其余为Ni和不可避免的杂质,通过涂布形成第二锭 VAR方法和ESR方法,通过均质处理,热加工,固溶处理和拉丝加工形成焊丝。 版权所有(C)2011,JPO&INPIT
    • 7. 发明专利
    • Heat-resistant spring and manufacturing method therefor
    • 耐热弹簧及其制造方法
    • JP2008144202A
    • 2008-06-26
    • JP2006330518
    • 2006-12-07
    • Daido Steel Co Ltd大同特殊鋼株式会社
    • KURATA SEIJIUEDA SHIGENORISHIMIZU TETSUYA
    • C22C19/05C22F1/00C22F1/10
    • PROBLEM TO BE SOLVED: To provide a heat-resistant spring having excellent corrosion resistance/oxidizing resistance and a thermal-expansion coefficient almost as the same as a ferritic heat-resistant alloy and excellent tensile strength and creep strength at high temperature, and a manufacturing method therefor.
      SOLUTION: This heat-resistant spring is obtained through the following processes, that is; this spring is a Ni-based alloy composed by mass% of 0.01-0.15% C, ≤1.0% Si, ≤1.0% Mn, 5.0-25.0% Cr, 10-20% Mo, ≤10% W, 12.0-25.0% Mo+1/2(W+Re), 0.1-2.5% Al, 0.1-3.0% Ti, 0.001-0.02% B, 0.001-0.2% Zr, ≤4.0% Fe and the balance Ni with inevitable impurities, and ≤14.0×10
      -6 /°C average thermal-expansion coefficient till 700°C, and after applying a solid-solution heat-treatment at 1000-1200°C to this Ni-based alloy, a cold-wire drawing at ≥20% working ratio, is performed to form into the spring-shape, and one-step ageing treatment at 600-900°C for 1-50 hr, is applied to obtain the heat-resistant spring precipitating γ-phase and A
      2 B-phase. Then, this manufacturing method is provided as the above processes.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供耐腐蚀性/耐氧化性优异的耐热弹簧和与铁素体耐热合金几乎相同的热膨胀系数,并且在高温下具有优异的抗拉强度和蠕变强度, 及其制造方法。

      解决方案:该耐热弹簧通过以下过程获得,即 该弹簧是由质量%为0.01-0.15%C,≤1.0%Si,≤1.0%Mn,5.0-25.0%Cr,10-20%Mo,≤10%W,12.0-25.0% Mo + 1/2(W + Re),0.1-2.5%Al,0.1-3.0%Ti,0.001-0.02%B,0.001-0.2%Zr,≤4.0%Fe,余量为不可避免的杂质,≤14.0 ×10 -6 /℃的平均热膨胀系数直至700℃,并且在1000-1200℃下对该Ni基合金进行固溶热处理之后, 以≥20%的加工率进行拉丝,形成弹簧形状,在600-900℃下进行1-50小时的一步时效处理,得到耐热弹簧析出γ相 和A 2 B相。 然后,作为上述方法提供该制造方法。 版权所有(C)2008,JPO&INPIT

    • 9. 发明专利
    • Corrosion resistant cast alloy
    • 耐腐蚀铸件合金
    • JP2005133106A
    • 2005-05-26
    • JP2003367110
    • 2003-10-28
    • Daido Steel Co LtdEbara Corp大同特殊鋼株式会社株式会社荏原製作所
    • NOGUCHI MANABUMATSUOKA KEISAKAMOTO HIDEYUKIUCHINO AKIRAUEDA SHIGENORISAWADA YOSHIYUKI
    • C23C10/50C22C19/05C23C30/00
    • PROBLEM TO BE SOLVED: To provide a cast alloy in which an alloy surface layer is provided with an Al-concentrated layer having excellent corrosion resistance in an environment having strong corrosiveness where chlorination corrosion, sulfurization corrosive or the like are simultaneously generated together with high temperature oxidation. SOLUTION: The corrosion resistant cast alloy has an Al-concentrated layer formed by surface treatment and having corrosion resistance to chlorination corrosion and sulfidation corrosion under high temperature oxidation. The corrosion resistant cast alloy is obtained by providing the surface of an alloy comprising, by mass, 23 to 40% Cr, 5 to 15% W, 0.3 to 4% Si, ≤2.5% Al, ≤3% Nb, 0.1 to 0.5% C, ≤2.0% Mn, and the balance Fe with inevitable impurities with an Al-concentrated layer formed by surface treatment. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种铸造合金,其中合金表面层在具有强腐蚀性的环境中具有优异的耐腐蚀性的Al浓缩层,其中氯化腐蚀,硫化腐蚀性等同时产生在一起 具有高温氧化。

      解决方案:耐腐蚀铸造合金具有通过表面处理形成的Al浓缩层,并且在高温氧化下具有耐氯化腐蚀和硫化腐蚀的耐腐蚀性。 耐腐蚀铸造合金是通过提供合金的表面得到的,该合金的质量为23〜40%的Cr,5〜15%的W,0.3〜4%的Si,≤2.5%的Al,≤3%的Nb,0.1〜0.5 %C,≤2.0%Mn,余量为Fe与不可避免的杂质,通过表面处理形成Al浓缩层。 版权所有(C)2005,JPO&NCIPI

    • 10. 发明专利
    • マルテンサイト系Bi快削ステンレス鋼
    • MARTENSITIC双自由切割不锈钢
    • JP2015045034A
    • 2015-03-12
    • JP2013175185
    • 2013-08-27
    • 大同特殊鋼株式会社Daido Steel Co Ltd
    • AKASHI MARIUEDA SHIGENORI
    • C22C38/00C22C38/60
    • 【課題】快削元素としてのPbを含まず、Pbに代えてBiをS,Teとともに複合添加して成るマルテンサイト系快削ステンレス鋼において、Pbに代えてBiを添加することにより良好な被削性を確保しつつ熱間加工性の低下の問題を解決することを目的とする。【解決手段】マルテンサイト系Bi快削ステンレス鋼を、質量%でC:0.10超〜0.35%未満,Si:0.10〜2.0%,Mn:0.80〜2.0%,P:0.005〜0.050%,S:0.10〜0.30%,Cr:10.0〜18.0%,Bi:0.01〜0.30%,Te:0.01〜0.10%,O:0.005〜0.030%,B:0.0005〜0.0100%,N:0.04%以下,残部Fe及び不可避的不純物の組成を有し、下記式(1),式(2),式(3)5?[C]+2?[S]+10?[Te]+3?[Bi]≦̸2.90・・式(1)3.0≦̸[Mn]/[S]≦̸15.0・・式(2)10≦̸[S]/[O]≦̸40・・式(3)を満たし、且つ円相当径が2.0μm以上でアスペクト比が10以下である硫化物が総量として面積率で0.50〜10.0%存在するようにする。【選択図】なし
    • 要解决的问题:为了解决热加工性降低的问题,同时通过在不含Pb的马氏体不含切削不锈钢中添加Bi代替Pb来确保良好的切削加工性,作为自由切削元件,并且通过复合添加Bi代替 Pb与S和Te一起使用。马氏体Bi自由切削不锈钢具有以质量%计含有C:0.10〜0.35%以下,Si:0.10〜2.0%,Mn:0.80〜2.0%,P :0.005〜0.050%,S:0.10〜0.30%,Cr:10.0〜18.0%,Bi:0.01〜0.30%,Te:0.01〜0.10%,O:0.005〜0.030%,B:0.0005〜0.0100,N: 0.04%以下,余量为不可避免的杂质,满足下式(1),式(2)和式(3),5×[C] + 2×[S] + 10×[Te] + 3× [Bi]≤2.90式(1),3.0≤[Mn] / [S]≤15.0式(2),10≤[S] / [O]≤40式(3) 为2.0μm以上,纵横比为10以下,面积比为0.50〜10.0%。