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    • 3. 发明专利
    • Method for manufacturing heat resistant steel of mx- type carbonitride precipitation-hardening type
    • 制造MX型碳化硼缓凝硬化型耐热钢的方法
    • JP2003073732A
    • 2003-03-12
    • JP2001260570
    • 2001-08-30
    • National Institute For Materials Science独立行政法人物質・材料研究機構
    • YAMADA KATSUMIOKADA KOICHIMUNEKI MASAICHIABE FUJIO
    • C21D6/00C22C38/00C22C38/12C22C38/54
    • PROBLEM TO BE SOLVED: To improve high-temperature creep strength at 600-650°C of a heat resistant steel of an MX-type carbonitride precipitation-hardening type, and to give general technical principle to a design of heat resistant steel.
      SOLUTION: When manufacturing the heat resistant steel of an MX-type carbonitride precipitation-hardening type, which contains MX-type carbonitrides of 0.1 wt.% or more in total precipitated quantity at 600-650°C, this method comprises smelting a steel containing Fe as a main chemical composition, by wt.%, C of 0.06% or more but 0.15% or less, N of 0.01% or more but 0.06% or less, Nb of 0.02% or more but 0.10% or less, and V of 0.10% or more but 0.50% or less, at least as the constituent elements for the MX-type carbonitrides, forming it, performing a solution heat treatment at the perfect solution temperature of MX-type carbonitrides for a time of reaching thermal equilibrium, quenching it at cooling rate of 10 K/s or higher to right above the Ms point, to make abundance of the MX-type carbonitrides to be 0.1 wt.% or less after quenching, tempering it at 700-800°C to make composite MX-type carbonitrides of NbC and VN to be less than 30 wt.% against all precipitated MX-type carbonitrides.
      COPYRIGHT: (C)2003,JPO
    • 要解决的问题:为了提高MX型碳氮化物沉淀硬化型耐热钢的600-650℃的高温蠕变强度,并给出耐热钢的设计的一般技术原理。 解决方案:在600-650摄氏度的总沉淀量中,制造含有0.1重量%以上的MX型碳氮化物的MX型碳氮化物沉淀硬化型耐热钢时,该方法包括: 含有Fe作为主要化学组成,重量%,C为0.06%以上且0.15%以下,N为0.01%以上且0.06%以下,Nb为0.02%以上且0.10%以下,Nb为 V为0.10%以上且0.50%以下,至少作为形成MX型碳氮化物的构成元素,在MX型碳氮化物的完全溶解温度下进行固溶热处理达到热平衡 ,在Ms点以上10 K / s以上的冷却速度淬火,使淬火后的MX型碳氮化物的丰度为0.1重量%以下,在700-800℃回火至 使NbC和VN的复合MX型碳氮化物相对于所有沉淀的MX型碳化物小于30重量% onitrides。
    • 4. 发明专利
    • Method for manufacturing high cr-high ni alloy pipe, and high cr-high ni alloy
    • 用于制造高CR高镍合金管和高CR高镍合金的方法
    • JP2011214141A
    • 2011-10-27
    • JP2011050393
    • 2011-03-08
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • YOSHIZAWA MITSURUOKADA KOICHITSUYUKUCHI SATOSHI
    • C22F1/10C22C19/05C22C30/00C22F1/00
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a high Cr-high Ni alloy pipe which does not cause deterioration of 20°C Charpy impact resistance during the manufacture and has preferable toughness, and to provide the high Cr-high Ni alloy tube having preferable toughness.SOLUTION: The method (1) for manufacturing the high Cr-high Ni alloy pipe which contains 44 to 52% Ni, 22 to 32% Cr and the remainder being Fe and impurities, in which the content of C, Si, Mn, Ti, Nb, Al, B and W, and the arbitrary addition amount of Nb and Zr are prescribed includes a process of performing soaking processing for heating a raw pipe of the high Cr-high Ni alloy tube to 1,180°C or more in the heat-treatment after cold-working and, thereafter, cooling the pipe under conditions satisfying the relation (I) of ΔT×Δt/2≤100 (I), wherein, in the relation (I), ΔT is a temperature difference (°C) between the soaking temperature and quench-initiation temperature after the soaking and Δt is a time (min) until the quench initiation after the soaking. The high Cr-high Ni alloy (2) having the chemical composition described above and having a Cr deposition amount of 0.3% or less is also provided.
    • 要解决的问题:提供一种制造高Cr高Ni合金管的方法,其在制造过程中不会导致20℃的夏氏冲击强度的劣化,并且具有优选的韧性,并且提供高Cr高的Ni合金管 具有优选的韧性。解决方案:用于制造高Cr高Ni合金管的方法(1),其包含44%至52%的Ni,22%至32%的Cr,余量为Fe和杂质,其中C,Si ,Mn,Ti,Nb,Al,B和W以及Nb和Zr的任意添加量包括将高Cr高Ni合金管的原料管加热至1180℃的均热处理的工序, 在冷加工后的热处理中更多,然后在满足关系式(I)ΔT×Δt/2≤100(I)的条件下冷却管,其中,在关系式(I)中,ΔT为温度 浸泡后的均热温度和淬火温度之间的差(℃)和Δt为a 时间(min),直到浸泡后的淬火开始。 还提供了具有上述化学组成并且Cr沉积量为0.3%以下的高Cr高Ni合金(2)。
    • 5. 发明专利
    • Austenitic high alloy-welded joint and austenitic high alloy welding material
    • 奥氏体合金焊接接头和奥氏体高合金焊接材料
    • JP2009144203A
    • 2009-07-02
    • JP2007323199
    • 2007-12-14
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • KOUSU TAKAHIROOGAWA KAZUHIROOKADA KOICHI
    • C22C19/05B23K35/30C22C38/00C22C38/58
    • PROBLEM TO BE SOLVED: To provide an austenitic stainless high alloy-welded joint excellent in welding surface crack-resistance, in spite of a high P content and perfectly austenite-solidification.
      SOLUTION: A basic material and welding metal for austenitic high alloy-welded joint, is composed of >0.3% to 2.0% C, ≤4.0% Si, 0.10-3.0% Mn, >20% to 80% Ni, 0.001-5% Al, ≤0.3% N, wherein the formula of [C≥0.6×P+0.27] is satisfied, and the balance Fe with impurities. Therein, in the elemental symbols in the above formula show the content with mass% of each element. The material may contain one or more selected among the following (1) group and (2) group, (1) group: one or more elements among ≤5% Cu, ≤10% Mo, ≤10% W, ≤2% V, ≤3% Nb, ≤3% Ti, ≤8% Ta, ≤1% Zr, ≤1% Hf, ≤15% Co, ≤0.03% B, and (2) group: one or more elements among ≤0.05% Ca, ≤0.05% Mg, ≤0.3% REM.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:尽管P含量高,奥氏体凝固完全,但是提供焊接表面抗裂性优异的奥氏体不锈钢高合金焊接接头。

      解决方案:奥氏体高合金焊接接头的基本材料和焊接金属,由> 0.3%〜2.0%C,≤4.0%Si,0.10-3.0%Mn,20%〜80%Ni,0.001 -5%Al,≤0.3%N,其中[C≥0.6×P + 0.27]的式满足,余量为Fe与杂质。 其中,上述式中的元素符号表示各元素的质量%的含量。 该材料可以包含以下(1)组和(2)组,(1)组中的一种或多种:≤5%Cu,≤10%Mo,≤10%W,≤2%V ,≤3%Nb,≤3%Ti,≤8%Ta,≤1%Zr,≤1%Hf,≤15%Co,≤0.03%B和(2)组:≤0.05% Ca,≤0.05%Mg,≤0.3%REM。 版权所有(C)2009,JPO&INPIT

    • 6. 发明专利
    • Ni-BASED ALLOY PRODUCT AND MANUFACTURING METHOD THEREFOR
    • 镍基合金产品及其制造方法
    • JP2011063838A
    • 2011-03-31
    • JP2009214478
    • 2009-09-16
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • ISEDA ATSUROHIRATA HIROMASAOKADA KOICHISENBA MITSUYUKI
    • C22C19/05B21J5/00C22F1/00C22F1/10
    • C22F1/10C22C19/05C22F1/00
    • PROBLEM TO BE SOLVED: To provide an Ni-based alloy product for heat resistance and pressure resistance, and to provide a manufacturing method therefor.
      SOLUTION: The Ni-based alloy product has a composition comprising, by mass%, 0.03-0.10% C, 0.05-1.0% Si, 0.1-1.5% Mn, 0.0005-0.04% Sol. Al, 20-30% Fe, 21.0% or more but less than 25.0% Cr, more than 6.0% but 9.0% or less W, 0.05-0.2% Ti, 0.05-0.35% Nb, 0.0005-0.006% B, and the balance Ni with impurities that comprise 0.03% or less P, 0.01% or less S, less than 0.010% N, less than 0.5% Mo and 0.8% or less Co, while an amount of the effective B (Beff) is 0.0050-0.0300%, which is specified by following expression (1): Beff(%)=B-(11/14)×N+(11/48)×Ti; and shows a fracture elongation of 20% or more by a tensile test with a strain rate of 10
      -6 /sec at 700°C. This alloy may contain one or more elements of Cu, Ta, Zr, Mg, Ca, a REM and Pd. This alloy product is particularly suitable for a large-sized product.
      COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种Ni基合金产品的耐热性和耐压性,并提供其制造方法。 解决方案:Ni基合金产品具有以质量%计含有0.03-0.10%C,0.05-1.0%Si,0.1-1.5%Mn,0.0005-0.04%Sol的组成。 Al,20-30%Fe,21.0%以上,25.0%以下Cr,6.0%以上9.0%以下的W,0.05〜0.2%的Ti,0.05〜0.35%的Nb,0.0005〜0.006%的B, 平衡Ni与包含0.03%以下的杂质,0.01%以下的S,小于0.010%的N,小于0.5%的Mo和0.8%以下的Co,而有效B(Beff)的量为0.0050-0.0300 %,由以下表达式(1)指定:Beff(%)= B-(11/14)×N +(11/48)×Ti; 并且通过在700℃下具有10 -6 /秒的应变速率的拉伸试验,显示出断裂伸长率为20%以上。 该合金可含有Cu,Ta,Zr,Mg,Ca,REM和Pd中的一种或多种元素。 该合金产品特别适用于大型产品。 版权所有(C)2011,JPO&INPIT
    • 10. 发明专利
    • Two-phase stainless steel excellent in hot-workability
    • 两相不锈钢在耐热性方面表现优异
    • JP2007084837A
    • 2007-04-05
    • JP2005271307
    • 2005-09-20
    • Sumitomo Metal Ind Ltd住友金属工業株式会社
    • OKADA KOICHIIGARASHI MASAAKI
    • C22C38/00C22C38/58
    • PROBLEM TO BE SOLVED: To provide a high corrosion resistant two-phase stainless steel having excellent hot-workability in spite of high content of N.
      SOLUTION: This two-phase stainless steel excellent in the hot-workability, contains, by mass, ≤0.03% C, 0.1-2.0% Si, 0.1-2.0% Mn, ≤0.05% P, ≤0.03% S, 20-30% Cr, 1-11% Ni, 0.05-3.0% Cu, 0.005-0.5% Nd, 0.001-0.1% sol.Al, 0.1-0.5% N and one or both of 0.5-6% Mo and 1-10% W and the balance Fe with impurities. This steel may further contain, one or more kinds among, by mass, 0.0005-0.05% B, 0.0005-0.05% Ca, 0.0005-0.5% Mg and 0.0005-0.1% REM except Nd.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供尽管氮含量高的热加工性优异的高耐腐蚀两相不锈钢。解决方案:热加工性优异的两相不锈钢, 含有≤0.03%C,0.1-2.0%Si,0.1-2.0%Mn,≤0.05%P,≤0.03%S,20-30%Cr,1-11%Ni,0.05-3.0%Cu, 0.005-0.5%Nd,0.001-0.1%sol.Al,0.1-0.5%N和0.5-6%Mo和1-10%W中的一种或两种,余量为Fe和杂质。 除了Nd以外,该钢还可以含有0.0005〜0.05%的B,0.0005〜0.05%的Ca,0.0005〜0.5%的Mg和0.0005〜0.1%的REM中的一种或多种。 版权所有(C)2007,JPO&INPIT