公开(公告)号：US5141822A

公开(公告)日：1992-08-25

申请号：US620449

申请日：1990-12-03

申请人： Sachio Matsuo ,  Toshiaki Shiota ,  Maki Itoh ,  Hideo Kawaguchi ,  Hiroki Hanabata ,  Yukihiro Yoshikawa ,  Takao Taka ,  Kiyoyuki Fukui

发明人： Sachio Matsuo ,  Toshiaki Shiota ,  Maki Itoh ,  Hideo Kawaguchi ,  Hiroki Hanabata ,  Yukihiro Yoshikawa ,  Takao Taka ,  Kiyoyuki Fukui

IPC分类号： B05D7/14 ,  B05D7/24 ,  B32B15/08 ,  B32B15/092 ,  C23C22/30 ,  C23C28/00

CPC分类号： C23C28/00 ,  C23C22/30 ,  Y10T428/12549 ,  Y10T428/12569 ,  Y10T428/12799

摘要： A precoated steel sheet having improved corrosion resistance and formability is disclosed, which comprises a Zn- or Zn alloy-plated steel sheet having on the plated surface either a colloidal silica-containing chromate undercoat layer and a polyhydroxypolyether resin-based topcoat of 0.3 to 10 .mu.m in thickness in which resin is derived by polycondensation of a dihydric phenol component selected from a mononuclear dihydric phenol, dinuclear dihydric phenol, and a mixture of both, with an epihalohydrin or a non-colloidal material-containing chromate underlayer and an epoxy resin based topcoat containing colloidal silica of a thickness of from 0.3-1.6 .mu.m in thickness. In spite of the absence of zinc powder, the precoated steel sheet can be satisfactorily welded by resistance welding when the thickness of the topcoat layer is not greater than 2.5 .mu.m, and even with such a thin topcoat, the precoated steel sheet retains its improved corrosion resistance and formability. The precoated steel sheet can be satisfactorily finish-coated by electrodeposition. The undercoat layer is produced by a two stage reduction of Cr.sup.+6 to Cr.sup.+3 in an aqueous suspension containing chromic acid.

摘要翻译： 公开了一种具有改进的耐腐蚀性和可成形性的预涂钢板，其包括在镀覆表面上具有含胶体二氧化硅的铬酸盐底涂层和聚羟基聚醚树脂基面涂层为0.3至10的镀Zn钢或Zn合金 通过将选自单核二元酚，双核二元酚和二者的混合物的二元酚成分与表卤代醇或非胶体材料的铬酸盐底层和环氧树脂缩聚得到树脂的厚度μm 含有厚度为0.3-1.6μm厚度的胶体二氧化硅的基面涂层。 尽管不存在锌粉，但是当顶涂层的厚度不大于2.5μm时，预涂钢板可以通过电阻焊接令人满意地焊接，并且即使使用这种薄的顶涂层，预涂钢板保持其改进 耐腐蚀性和成型性。 预涂钢板可以通过电沉积令人满意地完成涂层。 底涂层是通过在含有铬酸的含水悬浮液中将Cr +6还原为Cr + 3来进行的。

公开(公告)号：US5222654A

公开(公告)日：1993-06-29

申请号：US770488

申请日：1991-10-03

申请人： Masami Oki ,  Hitoshi Teshigawara ,  Takao Taka ,  Yasuto Fukada ,  Yutaka Suzuki ,  Seiji Okada

发明人： Masami Oki ,  Hitoshi Teshigawara ,  Takao Taka ,  Yasuto Fukada ,  Yutaka Suzuki ,  Seiji Okada

IPC分类号： B21B1/26 ,  B21B15/00 ,  B23K20/00 ,  B23K20/02 ,  B23K20/04 ,  B23K20/24

CPC分类号： B21B15/0085 ,  B23K20/00 ,  B23K20/028 ,  B23K20/04 ,  B23K20/24 ,  B21B1/26 ,  Y10S228/902

摘要： A method of carrying out hot pressure welding of hot steel stock is disclosed, which is effective for achieving a continuous hot rolling line. The hot steel stock to be joined is subjected to butt joining or lap joining in a reducing atmosphere under pressure while under hot conditions.

公开(公告)号：US5302797A

公开(公告)日：1994-04-12

申请号：US936515

申请日：1992-08-28

申请人： Masanori Yasuyama ,  Takao Taka ,  Kazuhiro Ogawa

发明人： Masanori Yasuyama ,  Takao Taka ,  Kazuhiro Ogawa

IPC分类号： B23K11/11 ,  B23K11/18 ,  B23K35/00 ,  B23K11/20

CPC分类号： B23K35/002 ,  B23K11/115 ,  B23K11/185 ,  B23K35/004

摘要： Placing a clad plate, comprising a resistor having a specific resistance at least two times that of aluminum, between two aluminum plates or between an aluminum plate and non-aluminum plate metal plate to be welded, and supplying an electric current through the aluminum plates to be welded and the clad plate. The clad plate itself may have aluminum plates sandwiching the resistor, the thickness each of the aluminum plate of the clad plate is from 1/4 to 6 times that of the resistor. The resistor can be made of iron, steel, titanium, tantalum, nickel, zirconium, and alloys thereof.

摘要翻译： 在两块铝板之间或铝板与非铝板金属板之间放置一层复合板，该电阻器的电阻至少为铝电阻的两倍，并将电流通过铝板供给至 焊接和复合板。 复合板本身可以具有夹住电阻器的铝板，复合板的铝板的厚度是电阻器的1/4至6倍。 电阻器可以由铁，钢，钛，钽，镍，锆及其合金制成。

公开(公告)号：US4103143A

公开(公告)日：1978-07-25

申请号：US800010

申请日：1977-05-24

申请人： Nobuyuki Yamauchi ,  Takao Taka

发明人： Nobuyuki Yamauchi ,  Takao Taka

IPC分类号： B23K35/02 ,  B23K35/00

CPC分类号： B23K35/0205

摘要： Electrode for tungsten inert gas welding having a body of a circular cross-section with a frustoconical tip end having a cone angle less than 120.degree.. The electrode is formed with an axially extending cylindrical recess at the tip end to leave an annular area. The configuration of the electrode is effective to decrease the intensity of the arc force so that the welding process can be performed with a heavy current and high speed.

公开(公告)号：US5584428A

公开(公告)日：1996-12-17

申请号：US385543

申请日：1995-02-08

申请人： Atsushi Satoh ,  Hiroshi Okamoto ,  Kunihiro Fukui ,  Jun-ichi Uchida ,  Kazuhiro Ogawa ,  Takao Taka ,  Munekatsu Furugen ,  Masanari Kimoto

发明人： Atsushi Satoh ,  Hiroshi Okamoto ,  Kunihiro Fukui ,  Jun-ichi Uchida ,  Kazuhiro Ogawa ,  Takao Taka ,  Munekatsu Furugen ,  Masanari Kimoto

IPC分类号： B21C37/06 ,  B21C37/15 ,  B23K13/02 ,  C23C26/00 ,  B23K20/00

CPC分类号： B23K13/025 ,  B21C37/06 ,  B21C37/154 ,  C23C26/00 ,  B23K2201/06

摘要： Clad pipe having an inner pipe and an outer pipe metallurgically bonded to each other is manufactured by a process comprising the steps of: (a) preparing an inner pipe and an outer pipe made of different metallic materials, the outer pipe having an inner diameter larger than the outer diameter of the inner pipe; (b) forming an Ni-B layer by electroplating or electroless plating on the surface of one of the pipes facing the other pipe when the two pipes are assembled, the Ni-B layer having a thickness of 2-100 .mu.m and consisting essentially, on a weight basis, of B: 0.5%-7%, Fe: 0%-30%, P: 0%-7%, and a balance of Ni and inevitable impurities; (c) assembling the two pipes by inserting the inner pipe into the outer pipe; (d) subjecting the assembled pipes to cold working for reduction in diameter to such a degree that the outer diameter of the inner pipe is reduced by from 0.5% to 10% to form raw clad pipe in which the inner and outer pipes are in contact; and (e) subjecting the raw clad pipe to heat treatment in the temperature range of 1050.degree.-1250.degree. C. for a time sufficient to metallurgically bond the inner and outer pipes by diffusion bonding.

摘要翻译： 通过包括以下步骤的方法制造具有彼此冶金结合的内管和外管的包层管：（a）制备由不同金属材料制成的内管和外管，所述外管的内径较大 比内管的外径大; （b）当组装两根管时，在面对另一根管的一个管的表面上通过电镀或无电镀形成Ni-B层，厚度为2-100μm的Ni-B层基本上 以重量计，B：0.5％-7％，Fe：0％-30％，P：0％-7％，余量为Ni和不可避免的杂质; （c）通过将内管插入外管来组装两个管; （d）对所组装的管进行冷加工以减小直径，使得内管的外径减小0.5％至10％，以形成内管和外管接触的生坯复合管 ; （e）在1050〜-1250℃的温度范围内对原料复合管进行热处理足够的时间，以通过扩散粘合冶金地结合内管和外管。

公开(公告)号：US4912295A

公开(公告)日：1990-03-27

申请号：US203156

申请日：1988-06-07

申请人： Kazushige Arimochi ,  Kazumi Isaka ,  Takao Taka

发明人： Kazushige Arimochi ,  Kazumi Isaka ,  Takao Taka

IPC分类号： B23K11/02 ,  B23K11/087 ,  B23K33/00

CPC分类号： B23K33/00 ,  B23K11/02 ,  B23K11/087

摘要： A butt welding method is disclosed, which comprises abutting a pair of steel sheets and welding the abutting surfaces by opposing electrodes while preventing gaps from developing between the widthwise outer portions of said steel sheets by suppressing rotational deformation of the abutting surfaces in the widthwise outer portions thereof.

摘要翻译： 公开了一种对接焊接方法，其包括抵靠一对钢板并且通过相对的电极焊接抵接表面，同时通过抑制宽度方向外侧部分中的抵接表面的旋转变形来防止在钢板的宽度方向外侧部分之间形成间隙 其中。

公开(公告)号：US5509600A

公开(公告)日：1996-04-23

申请号：US250671

申请日：1994-05-27

申请人： Seiji Okada ,  Yutaka Suzuki ,  Kouichi Sakamoto ,  Hitoshi Teshigahara ,  Takao Taka ,  Yasuto Fukada ,  Masami Oki

发明人： Seiji Okada ,  Yutaka Suzuki ,  Kouichi Sakamoto ,  Hitoshi Teshigahara ,  Takao Taka ,  Yasuto Fukada ,  Masami Oki

IPC分类号： B21B1/26 ,  B21B15/00 ,  B21B45/06 ,  B23K20/00 ,  B23K20/02 ,  C21D1/76 ,  B23K20/14

CPC分类号： B21B15/0085 ,  B23K20/023

摘要： A method of hot pressure welding of hot steel stock, in which the ends of the steel stock are descaled mechanically and pressure joined under a reducing flame. Since re-oxidation after descaling is prevented and the feasible temperature for hot pressure joining is maintained by the reducing flame, the joining is accomplished firmly and strong joints are obtained.

摘要翻译： 一种热钢坯料的热压焊接方法，其中钢坯端部机械地减压，并在还原火焰下连接。 由于防止了除垢后的再氧化，并且通过还原火焰保持热压接合的可行温度，因此牢固地实现接合，获得了强烈的接合。