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    Method of manufacturing seamless tube formed of titanium material
    1.
    发明授权
    Method of manufacturing seamless tube formed of titanium material 失效
    制造由钛材料形成的无缝管的方法

    公开(公告)号：US4991419A

    公开(公告)日：1991-02-12

    申请号：US437273

    申请日：1989-11-16

    申请人： Atsuhiko Kuroda ,  Yoshiaki Shida ,  Hiroki Kawabata ,  Tetsuya Nakanishi ,  Kazuhiro Nakajima ,  Shigemitsu Kimura

    发明人： Atsuhiko Kuroda ,  Yoshiaki Shida ,  Hiroki Kawabata ,  Tetsuya Nakanishi ,  Kazuhiro Nakajima ,  Shigemitsu Kimura

    IPC分类号： B21B3/00 ,  B21B19/04 ,  B21B28/04

    CPC分类号： B21B19/04 ,  B21B28/04 ,  B21B3/00

    摘要： A method of manufacturing a seamless tube formed of a titanium material, such as pure titanium or titanium alloys, by the use of the Mannesmann's method. At first, an ingot formed of the titanium material is processed under the conditions that a heating temperature is 850.degree. to 1,250.degree. C., the final temperature being 600.degree. to 1,100.degree. C., and a working degree being 50% or more so as to be turned into a solid billet. The resulting solid billet is subjected to a piercing within a temperature range of .beta. transus -100.degree. to 1,250.degree. C. so as to be turned into a hollow piece. In this piercing process, inclined rolls of a piercer are descaled. The resulting hollow piece is, in case of need, regulated a size thereof by elongating so as to be turned into a hollow shell. Subsequently, the resulting hollow shell is subjected to a reducing step (reducing conditions: temperature at an inlet side of the mill is 600.degree. to 1,100.degree. C. and a reduction of the outside diameter is 80% or more) by means of a reducer mill or to a sizing step (sizing conditions: temperature at an inlet side of the mill is 550.degree. to 1,150.degree. C. and a reduction of the outside diameter is 3 to 15%) by means of a sizer mill.

    Process for manufacturing corrosion-resistant seamless titanium alloy tubes and pipes
    2.
    发明授权
    Process for manufacturing corrosion-resistant seamless titanium alloy tubes and pipes 失效
    制造抗腐蚀无缝钛合金管和管道的方法

    公开(公告)号：US5141566A

    公开(公告)日：1992-08-25

    申请号：US708719

    申请日：1991-05-31

    申请人： Shiroh Kitayama ,  Yoshiaki Shida

    发明人： Shiroh Kitayama ,  Yoshiaki Shida

    IPC分类号： B21B21/00 ,  B21C23/08 ,  C22C14/00 ,  C22F1/18

    CPC分类号： C22C14/00 ,  C22F1/183

    摘要： A process for manufacturing seamless titanium alloy tubes or pipes having good corrosion resistance and good mechanical properties from a titanium alloy which consists essentially, by weight, of one or more of the platinum group metals in a total amount of 0.01-0.14%, at least one of Ni and Co each in an amount of 0.1%-2.0%, no more than 0.35% of oxygen, not more than 0.30% of iron, optionally at least one of Mo, W, and V each in an amount of 0.1%-2.0%, and a balance of Ti. The process comprises preparing a billet by hot working after preheating in a temperature range of from 650.degree. C. to a temperature 100.degree. C. above the beta-transus point and subjecting the billet to tube extrusion after preheating in a temperature range of from 650.degree. C. to a temperature 100.degree. C. above the beta-transus point, optionally followed by at least one of annealing, cold drawing, and cold or warm rolling.

    Sheath heater
    6.
    发明授权
    Sheath heater 失效
    护套加热器

    公开(公告)号：US4742324A

    公开(公告)日：1988-05-03

    申请号：US52216

    申请日：1987-05-20

    申请人： Yoshiaki Shida ,  Hisao Fujikawa ,  Nobuyuki Maruyama ,  Shunichiro Akiyama

    发明人： Yoshiaki Shida ,  Hisao Fujikawa ,  Nobuyuki Maruyama ,  Shunichiro Akiyama

    IPC分类号： C22C38/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  H05B3/48 ,  H01C1/03

    CPC分类号： C22C38/46 ,  C22C38/44 ,  H05B3/48 ,  Y10S148/909

    摘要： A corrosion-resistant steel tube such as a sheath heater steel tube and boiler tube which exhibit improved resistance to dry corrosion under high temperature dry-corrosive conditions in the presence of chlorides is disclosed. The steel consists essentially of, in % by weight:C: not more than 0.05%,Si: 0.1-2.0%, Mn: not more than 2.0%,Cr: 18-26%, Ni: 16-30%,at least one of Mo: 0.5-4.0%, W: 0.01-4.00%, andV: 0.01-4.00%,N: 0-0.25%,(Ti+Nb): 0-1.5%, andthe balance iron and incidental impurities.

    摘要翻译： 公开了一种耐腐蚀钢管，如护套加热器钢管和锅炉管，其在氯化物存在下在高温干燥腐蚀条件下表现出改进的耐干腐蚀性。 钢基本上以重量％计：C：不大于0.05％，Si：0.1-2.0％，Mn：不大于2.0％，Cr：18-26％，Ni：16-30％，至少 Mo：0.5-4.0％，W：0.01-4.00％，V：0.01-4.00％，N：0-0.25％，（Ti + Nb）：0-1.5％，余量为铁和杂质。

    Process for manufacturing corrosion-resistant welded titanium alloy tubes and pipes
    7.
    发明授权
    Process for manufacturing corrosion-resistant welded titanium alloy tubes and pipes 失效
    制造耐腐蚀焊接钛合金管和管道的方法

    公开(公告)号：US5201457A

    公开(公告)日：1993-04-13

    申请号：US729213

    申请日：1991-07-12

    申请人： Shiroh Kitayama ,  Yoshiaki Shida

    发明人： Shiroh Kitayama ,  Yoshiaki Shida

    IPC分类号： B21C37/08 ,  C22C14/00 ,  C22F1/00 ,  C22F1/18

    CPC分类号： C22C14/00 ,  C22F1/183

    摘要： A process for manufacturing welded titanium alloy tubes and pipes having good corrosion resistance and good mechanical properties from a titanium alloy which consists essentially, by weight, of one or more of the platinum group metals in a total amount of 0.01-0.14%, at least one of Ni and Co each in an amount of 0.1%-2.0%, not more than 0.35% of oxygen, not more than 0.30% of iron, optionally at least one of Mo, W, and V each in an amount of 0.1%-2.0%, and a balance of Ti. The process comprises preparing a slab by hot working from an ingot of the titanium alloy after heating in a temperature range of from 750.degree. C. to a temperature 200.degree. C. above the beta-transus point, hot-rolling the slab with a finishing temperature of not lower than 400.degree. C. to form a hot-rolled strip after heating in a temperature range of from 650.degree. C. to a temperature 150.degree. C. above the beta-transus point, optionally performing annealing in a temperature range of from 550.degree. C. to a temperature 20.degree. C. above the beta-transus point, and/or cold-rolling followed by such annealing, forming and welding the strip to form a tube or pipe, and optionally heat-treating the welded tube or pipe in a temperature range of from 400.degree. C. to a temperature 20.degree. C. above the beta-transus point.

    Sheath heater
    8.
    发明授权
    Sheath heater 失效
    护套加热器

    公开(公告)号：US4950873A

    公开(公告)日：1990-08-21

    申请号：US319917

    申请日：1989-03-06

    申请人： Yoshiaki Shida ,  Hisao Fujikawa ,  Nobuyuki Maruyama ,  Shunichiro Akiyama

    发明人： Yoshiaki Shida ,  Hisao Fujikawa ,  Nobuyuki Maruyama ,  Shunichiro Akiyama

    IPC分类号： C22C38/44 ,  C22C38/46 ,  H05B3/48

    CPC分类号： H05B3/48 ,  C22C38/44 ,  C22C38/46 ,  Y10T29/49083

    摘要： A corrosion-resistant steel tube such as a sheath heater steel tube and boiler tube which exhibit improved resistance to dry corrosion under high temperature dry-corrosive conditions in the presence of chlorides is disclosed. The steel consists essentially of, in % by weight:______________________________________ C: not more than 0.05%, Si: 0.1-2.0%, Mn: not more than 2.0%, Cr: 18-26%, Ni: 16-30%, ______________________________________ at least one of Mo: 0.5-4.0%, W: 0.01-4.00%, andV: 0.01-4.00%,N: 0-0.25%,(Ti+Nb): 0-1.5%, andthe balance iron and incidental impurities.

    摘要翻译： 公开了一种耐腐蚀钢管，如护套加热器钢管和锅炉管，其在氯化物存在下在高温干燥腐蚀条件下表现出改善的耐干腐蚀性。 钢主要由以重量％计：-C：不大于0.05％，-Si：0.1-2.0％，Mn：不大于2.0％，-Cr：18-26％，Ni：16-30％ ， - Mo：0.5-4.0％，W：0.01-4.00％，V：0.01-4.00％，N：0-0.25％，（Ti + Nb）：0-1.5％中的至少一种，余量为 和杂质。

    Method of improving the resistance of Ti-based alloys to corrosion in deep-well environments
    9.
    发明授权
    Method of improving the resistance of Ti-based alloys to corrosion in deep-well environments 失效
    提高Ti基合金在深井环境中腐蚀的阻力的方法

    公开(公告)号：US4859415A

    公开(公告)日：1989-08-22

    申请号：US114016

    申请日：1987-10-29

    申请人： Yoshiaki Shida ,  Shiro Kitayama ,  Tomio Nishikawa

    发明人： Yoshiaki Shida ,  Shiro Kitayama ,  Tomio Nishikawa

    IPC分类号： C22C14/00

    CPC分类号： C22C14/00

    摘要： A method of improving the resistance of oil-well tubular products made of .alpha.-type or (.alpha.+.beta.)-type Ti-based alloys to corrosion in a deep-well environment at high temperatures is disclosed. The method is characterized by adding, as an alloying element, (A) at least one platinum group metal in an amount of 0.02-0.20% by weight, or (B) at least one platinum group metal in an amount of 0.005-0.12% by weight and optionally at least one of Ni, Co, W, and Mo in an amount of 0.05-2.00% by weight.

    摘要翻译： 公开了一种提高由α型或（α+β）型Ti基合金制成的油井管状产品在高温环境中腐蚀的阻力的方法。 该方法的特征在于，作为合金元素添加（A）至少一种量为0.02-0.20重量％的铂族金属，或（B）至少一种0.005-0.12重量％的铂族金属， 和任选的Ni，Co，W和Mo中的至少一种，其量为0.05-2.00重量％。

    Process for producing heat-resistant ferritic stainless steel sheet
    10.
    发明授权
    Process for producing heat-resistant ferritic stainless steel sheet 失效
    生产耐热铁素体不锈钢板的工艺

    公开(公告)号：US4484956A

    公开(公告)日：1984-11-27

    申请号：US582534

    申请日：1984-02-22

    申请人： Yoshiaki Shida ,  Hisao Fujikawa ,  Masao Koike ,  Junichiro Murayama ,  Shunichiro Akiyama

    发明人： Yoshiaki Shida ,  Hisao Fujikawa ,  Masao Koike ,  Junichiro Murayama ,  Shunichiro Akiyama

    IPC分类号： C22C38/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/26 ,  C21D7/14

    CPC分类号： C21D8/0205

    摘要： A process for producing heat-resistant ferritic stainless steel sheet which exhibits improved toughness and productivity is disclosed. The process comprises the following steps:(a) hot rolling a steel with a finishing temperature of not higher than 850.degree. C., said steel comprising, by weight %,C: not more than 0.07%,Si: 1.5-3.5%,Mn: not more than 2.0%,Cr: 10-25% ,N: not more than 0.05%,Nb: 5X(C %+N %)-20X(C %+N %),optionally at least one element selected from the group consisting of Al, Y, Ca, and REM in a total amount of 0.3% or less, andthe balance iron and incidental impurities; and(b) annealing the resulting hot rolled steel sheet at a temperature of 820.degree.-1000.degree. C.Cold rolling may be applied to the annealed hot-rolled steel sheet.

    摘要翻译： 公开了一种生产出具有改进的韧性和生产率的耐热铁素体不锈钢板的方法。 该方法包括以下步骤：（a）对终轧温度不高于850℃的钢进行热轧，所述钢以重量％计含有C：不大于0.07％Si：1.5-3.5％ Mn：不大于2.0％，Cr：10-25％，N：不大于0.05％，Nb：5X（C％+ N％）-20X（C％+ N％），任选的至少一种选自 总计为0.3％以下的Al，Y，Ca，REM组成的组，余量为铁和杂质; 和（b）在820-1000℃的温度下退火所得热轧钢板。可以对退火的热轧钢板进行冷轧。