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    Bare electrode for welding of low temperature steel
    1.
    发明授权
    Bare electrode for welding of low temperature steel 失效
    用于低温钢焊接的裸电极

    公开(公告)号：US4068113A

    公开(公告)日：1978-01-10

    申请号：US635321

    申请日：1975-11-26

    申请人： Tomokazu Godai ,  Isao Aida ,  Masatoshi Nakagaki

    发明人： Tomokazu Godai ,  Isao Aida ,  Masatoshi Nakagaki

    IPC分类号： B23K9/23 ,  B23K35/30

    CPC分类号： B23K35/3053

    摘要： A bare welding electrode of a diameter of at least 3.0 mm for use in a large current gas shielded arc welding process in which steel for low temperature use is welded by a welding current of at least 500 A in a shielding gas composed mainly of an inert gas such as Ar, He or the like. In one aspect the electrode comprises up to 0.12% C, up to 0.8% Si, up to 3.0% Mn up to 0.25% Ti, at least one member selected from the group consisting of up to 4.0% Ni, up to 0.8% Cr and up to 1.0% Mo and the carbon equivalent (Ceq), of said electrode being up to 0.60% which is represented by the formulaCeq = C + 1/6Mn + 1/24Si + 1/40Ni + 1/5Cr + 1/4 Mowherein each element denotes the content, % by weight of the element. In the second aspect the bare welding electrode comprises up to 0.12% C, up to 0.8% Si, up to 3.0% Mn, up to 0.19% Ti, 0.0005 to 0.015% B, at least one member selected from the group consisting of up to 4.0% Ni, up to 0.8% Cr and up to 1.0% Mo and which a carbon equivalent of up to 0.60%, calculated according to the above formula.

    摘要翻译： 直径为3.0mm以上的裸焊接电极，用于大电流气体保护电弧焊工艺，其中低温用钢通过至少500A的焊接电流焊接在主要由惰性气体组成的保护气体中 气体如Ar，He等。 在一个方面，电极包括高达0.12％C，高达0.8％的Si，至多3.0％的Mn至多至0.25％的Ti，至少一种选自由高达4.0％的Ni，至多0.8％的Cr 和高达1.0％的Mo和所述电极的碳当量（Ceq）高达0.60％，其由式Ceq = C + 1 / 6Mn + 1 / 24Si + 1 / 40Ni + 1 / 5Cr + 1 / 4 Mo在每个元素中，以元素的重量为单位。 在第二方面，裸焊电极包括高达0.12％C，高达0.8％的Si，至多3.0％的Mn，至多0.19％的Ti，0.0005至0.015％的B，至少一种选自上述 至4.0％的Ni，高达0.8％的Cr和至多1.0％的Mo，并且根据上式计算的碳当量高达0.60％。

    Method of manufacturing thick, high-strength steel pipe for low temperature service
    2.
    发明授权
    Method of manufacturing thick, high-strength steel pipe for low temperature service 失效
    制造用于低温服务的厚，高强度钢管的方法

    公开(公告)号：US4020312A

    公开(公告)日：1977-04-26

    申请号：US634325

    申请日：1975-11-21

    申请人： Mutsuro Araki ,  Bunshiro Sakai ,  Itaru Watanabe ,  Makoto Yamada ,  Koshiro Tsukada ,  Tomokazu Godai ,  Isao Aida ,  Masatoshi Nakagaki

    发明人： Mutsuro Araki ,  Bunshiro Sakai ,  Itaru Watanabe ,  Makoto Yamada ,  Koshiro Tsukada ,  Tomokazu Godai ,  Isao Aida ,  Masatoshi Nakagaki

    IPC分类号： B23K9/16 ,  B21C37/08 ,  B23K9/173 ,  B23K9/23 ,  B23K35/30 ,  C22C38/00 ,  C22C38/08 ,  B23K31/06 ,  B23K9/18 ,  B23K35/34

    CPC分类号： C22C38/08 ,  B23K35/3053 ,  B23K9/23

    摘要： A method of manufacturing a thick, high-strength steel pipe for low temperature service comprising the steps of forming into tubular shape a steel plate having a thickness of over 12 mm and a specific composition, of which the C.sub.eq value is adjusted to less than 0.50, when the Mn content is less than 1.0 % whereas the C.sub.eq value is adjusted to less than 0.45 when the Mn content is over 1.0 % and less than 2.0 %, and nextly of welding said tube form at high speeds and high efficiency by the process of single electrode or multiple electrode large-current gas-shielded arc welding with one pass per electrode on each side of the seam at a specific condition, each electrode preferably consisting of a solid wire essentially containing less than 0.3 % Ti with or without the addition of less than 0.01 % B, and said steel pipe having, in its as-welded condition, mechanical properties such that the yield point of the base metal portion is over 60,000 psi and the weld zone has a maximum hardness of less than Hv10-280 and a Charpy test absorbed energy of over 7 Kg.m at -10.degree. F. Even when the C.sub.eq value of said steel plate is less than 0.65, a thick, high-strength steel pipe for low temperature service having equal mechanical properties to the above mentioned pipe may be manufactured, after welding, by subjecting the welded pipe to a post heat treatment in which the welded pipe is held at a temperature between 500.degree. and 700.degree. C for less than 1 hour.

    摘要翻译： 一种制造用于低温服务的厚的高强度钢管的方法，包括以下步骤：将Ceq值调节至小于0.50的厚度大于12mm的钢板和具体组成的管状 当Mn含量小于1.0％时，当Mn含量超过1.0％且小于2.0％时Ceq值调节至小于0.45，接下来通过该方法以高速和高效率焊接所述管形式 的单电极或多电极大电流气体保护电弧焊接，在特定条件下，每个电极在接缝的每一侧上一次通过，每个电极优选由基本上包含小于0.3％的Ti的实线组成，具有或不具有添加 小于0.01％B，并且所述钢管在其焊接条件下具有使得贱金属部分的屈服点超过60,000psi并且焊接区具有最大硬度的机械性能 小于Hv10-280，夏比试验在-10°F时吸收的能量超过7Kg.m。即使所述钢板的Ceq值小于0.65，也可使用厚度高的低温用钢管， 可以通过对焊接管进行后热处理，焊接管在500〜700℃的温度下保持1小时以上，可以制造与上述管相同的机械特性。

    Welding material for super low temperature steels
    3.
    发明授权
    Welding material for super low temperature steels 失效
    超低温钢焊接材料

    公开(公告)号：US3966424A

    公开(公告)日：1976-06-29

    申请号：US512915

    申请日：1974-10-07

    申请人： Tomokazu Godai ,  Toboru Sugiyama ,  Katushi Nishimura

    发明人： Tomokazu Godai ,  Toboru Sugiyama ,  Katushi Nishimura

    IPC分类号： B23K35/30 ,  B32B15/16

    CPC分类号： B23K35/304 ,  Y10T428/12097 ,  Y10T428/12118 ,  Y10T428/12139

    摘要： This invention provides a welding material for super low temperature steels which comprises not more than 0.2% carbon, 5 - 12% manganese, not more than 30% chromium, 4 - 8% niobium, 22% iron and not more than 1.5% silicon, the balance being substantially nickel, and which can give excellent strength and impact value to the weld zone. In one embodiment, the welding material is an integral body composed of a metal-forming material and a flux of lime or lime-titania in which the metal forming components are within the above range.

    摘要翻译： 本发明提供一种用于超低温钢的焊接材料，其包括不超过0.2％的碳，5-12％的锰，不超过30％的铬，4-8％的铌，22％的铁和不超过1.5％的硅， 余量基本上为镍，并且可以为焊接区赋予优异的强度和冲击值。 在一个实施例中，焊接材料是由金属形成材料和金属成形组分在上述范围内的石灰或石灰 - 二氧化钛焊剂组成的整体。

    Surface flaw detector
    4.
    发明授权
    Surface flaw detector 失效
    表面探伤仪

    公开(公告)号：US4185921A

    公开(公告)日：1980-01-29

    申请号：US870497

    申请日：1978-01-18

    申请人： Tomokazu Godai ,  Yasuhito Takeuchi ,  Kozo Nakai ,  Kazuo Takeuchi ,  Yoshihisa Morioka

    发明人： Tomokazu Godai ,  Yasuhito Takeuchi ,  Kozo Nakai ,  Kazuo Takeuchi ,  Yoshihisa Morioka

    IPC分类号： G01B11/24 ,  G01N21/88 ,  G01N21/89 ,  G01N21/952 ,  G01N21/32

    CPC分类号： G01N21/88 ,  G01N21/8901

    摘要： A surface flaw detector includes a light source capable of generating a laser beam, a material conveyance means provided for conveying a material to be examined in the direction transverse to the axis of the material and designed to let the material rotate on its axis at a fixed position or along the direction of conveyance, means for scanning the laser beam on the surface and in the axial direction of the material which is rotating on its own axis, optical means adapted to transmit the light reflected from the surface of the material to form a stationary optic image of the scanning means, light receiving means provided at the image forming position, and processing means adapted to discriminate the flaw signal upon receiving the output from the light receiving means.

    摘要翻译： 表面探伤仪包括能够产生激光束的光源，材料传送装置，用于沿垂直于材料轴线的方向传送被检查材料，并被设计成使材料在其轴线上以固定的方式旋转 位置或沿着输送方向的装置，用于扫描激光束在其自身轴线上旋转的材料的表面和轴向上的光学装置，适于透射从材料表面反射的光以形成 扫描装置的静止光学图像，设置在图像形成位置处的光接收装置，以及适于在接收来自光接收装置的输出时识别缺陷信号的处理装置。

    Welding process
    5.
    发明授权
    Welding process 失效
    焊接工艺

    公开(公告)号：US4336441A

    公开(公告)日：1982-06-22

    申请号：US84829

    申请日：1979-10-15

    申请人： Tomokazu Godai ,  Tohru Sugiyama ,  Yutaka Nishikawa

    发明人： Tomokazu Godai ,  Tohru Sugiyama ,  Yutaka Nishikawa

    IPC分类号： B23K9/23 ,  B23K35/30 ,  B23K35/00

    CPC分类号： B23K35/3066 ,  B23K9/23 ,  B23K2203/04 ,  B23K2203/18

    摘要： A welding method for welding a base metal with a welding wire of specified alloy composition using a TIG welding process, automatically controlling an arc length between a nonconsumable electrode and the base metal, deflecting the arc forward in the welding advance direction by the influence of magnetic fields resulting from DC current flow through the welding wire to prevent arc blow, weaving the arc forward in the welding advance direction by pulsating the current flowing through the weld wire, and heat treating a final weld layer with the nonconsumable electrode.

    摘要翻译： 一种焊接方法，使用TIG焊接方法用特定合金组成的焊丝焊接母材，自动控制不可消耗电极与母材之间的电弧长度，通过磁力的影响使焊接前进方向上的电弧偏转 由直流电流流经焊丝而产生的场，以防止电弧吹制，通过脉动流过焊丝的电流，在焊接前进方向向前编织弧，以及用非消耗性电极对最终的焊接层进行热处理。