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1. 发明授权

US4110589A Method for longitudinally seam-welding pipe-blank for welded steel pipe from the inside along a groove 失效
标题翻译：焊缝钢管纵向缝焊管道的方法，沿内侧沿槽
公开(公告)号：US4110589A
公开(公告)日：1978-08-29
申请号：US771841
申请日：1977-02-24
申请人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshifumi Kojima , Hiroyoshi Matsubara , Tatsumi Osuka , Kenji Takeshige , Takashi Nagamine , Osamu Hirano
发明人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshifumi Kojima , Hiroyoshi Matsubara , Tatsumi Osuka , Kenji Takeshige , Takashi Nagamine , Osamu Hirano
IPC分类号： B23K9/08 , B23K9/025 , B23K9/073
CPC分类号： B23K9/0737
摘要： In longitudinally seam-welding a pipe-blank for welded steel pipe from the inside along a groove by the reverse-polarity GMA welding process comprising using direct electric current supplied to a consumable electrode through a cable as the welding current with said consumable electrode as the anode, the direction of said direct electric current for welding flowing through said cable introduced into said pipe-blank is set in the same direction as that of welding, thereby preventing occurrence of a magnetic arc blow of the welding arc from said consumable electrode toward the upstream side of the welding direction, i.e., in the opposite direction to that of welding.
摘要翻译：在通过反向极性GMA焊接方法从焊接钢管的内侧纵向地焊接焊接钢管的管坯时，包括使用通过电缆提供给可消耗电极的直流电作为与所述可消耗电极作为焊接电流的焊接电流阳极时，流入通过引入所述管坯的所述电缆的焊接的所述直流电流的方向设定为与焊接相同的方向，从而防止焊接电弧从所述可消耗电极朝向焊接方向的上游侧，即与焊接方向相反的方向。

2. 发明授权

US4238659A Preventing magnetization of pipe blank in GMA welding 失效
标题翻译：防止GMA焊接中管坯的磁化
公开(公告)号：US4238659A
公开(公告)日：1980-12-09
申请号：US011412
申请日：1979-02-12
申请人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshifumi Kojima , Hiroyoshi Matsubara , Tatsumi Osuka , Kenji Takeshige , Takashi Nagamine , Osamu Hirano
发明人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshifumi Kojima , Hiroyoshi Matsubara , Tatsumi Osuka , Kenji Takeshige , Takashi Nagamine , Osamu Hirano
IPC分类号： B23K9/08 , B23K9/025 , B23K9/073 , B23K31/06
CPC分类号： B23K9/0737
摘要： In longitudinally seam-welding a pipe-blank for welded steel pipe from the inside along a groove by the GMA welding process which comprises using direct electric current supplied to a plurality of consumable electrodes in tandem through at least one cable as the welding current, at least two even-numbered consumable electrodes are used, half of said consumable electrodes being connected to said direct current so as to be positive in polarity and the remaining half of said consumable electrodes being connected to said direct current so as to be negative in polarity, to enable lines of magnetic force produced by said direct electric current for welding flowing through said at least one cable introduced into said pipe-blank to cancel each other, thereby preventing magnetization of said pipe-blank and the resulting magnetic arc blow of the welding arc.
摘要翻译：在通过GMA焊接工艺沿着沟槽从内侧纵向焊接焊接钢管的管坯，其包括通过至少一根电缆作为焊接电流串联地供给多个可消耗电极的直流电流，使用至少两个偶数的可消耗电极，所述可消耗电极的一半连接到所述直流电，以使其极性为正，并且所述可消耗电极的剩余一半连接到所述直流电流以使其极性为负，以使由所述直流电流产生的电磁线能够流过通过所述至少一根引入到所述管坯中的电缆而彼此抵消，从而防止所述管坯的磁化和焊接电弧产生的电弧冲击。

3. 发明授权

US4107503A Method for eliminating residual magnetism in pipe-blank for welded steel pipe longitudinally seam-welded from inside 失效
标题翻译：从内部纵向焊缝焊接钢管的管坯残留消除方法
公开(公告)号：US4107503A
公开(公告)日：1978-08-15
申请号：US776235
申请日：1977-03-10
申请人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshifumi Kojima , Hiroyoshi Matsubara , Tatsumi Osuka , Kenji Takeshige , Takashi Nagamine , Osamu Hirano
发明人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshifumi Kojima , Hiroyoshi Matsubara , Tatsumi Osuka , Kenji Takeshige , Takashi Nagamine , Osamu Hirano
IPC分类号： B23K9/08 , B23K9/025 , H01F13/00 , B23K31/06
CPC分类号： H01F13/006 , B23K9/0253
摘要： After longitudinally seam-welding a pipe-blank for welded steel pipe from the inside along a groove by the arc welding process which comprises using direct electric current supplied to a consumable electrode through a cable as the welding current, the polarity of said consumable electrode applied for said longitudinal seam-welding is switched over to the opposite polarity, an arc from said consumable electrode is ignited again on a tab plate attached to the end of said pipe-blank on the completion side of said longitudinal seam-welding to cause a direct electric current for eliminating magnetism to flow through said cable in the opposite direction to that of said direct electric current for welding, thereby eliminating residual magnetism in said pipe-blank produced by said direct electric current for welding flowing through said cable introduced into said pipe-blank during said longitudinal seam-welding.
摘要翻译：在通过电弧焊接方法从焊接钢管的内侧纵向地焊接用于焊接钢管的管坯，其包括使用通过电缆供给到可消耗电极的直流电流作为焊接电流，施加所述自耗电极的极性对于所述纵向焊缝切换到相反的极性，在所述纵向焊缝的完成侧上附接到所述管坯的端部的接片板上再次点燃来自所述可消耗电极的电弧，以引起直接用于消除磁通的方式与用于焊接的所述直流电流相反的方向流过所述电缆的电流，从而消除由所述直流电流产生的所述管坯中残留的磁性，在所述纵向焊缝期间坯料。

4. 发明授权

US4145594A Method for longitudinally seam-welding pipe-bland for welded steel pipe from inside along groove 失效
标题翻译：焊缝钢管纵向缝焊管道方法
公开(公告)号：US4145594A
公开(公告)日：1979-03-20
申请号：US799986
申请日：1977-05-24
申请人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshihiro Takamura
发明人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe , Motoaki Suzuki , Toshihiro Takamura
IPC分类号： B23K9/18 , B23K9/025 , B23K9/073 , B23K9/08
CPC分类号： B23K9/0737
摘要： In longitudinally seam-welding a pipe-blank for welded steel pipe from the inside along a groove by the metal arc welding process which comprises using direct electric current supplied to a plurality of consumable electrodes in tandem through at least one current supply cable as the welding current, an even number of consumable electrodes are used; half of said even-numbered consumable electrodes are connected in the reverse-polarity manner, i.e., to be positive in polarity, and are used as leading electrodes, and the remaining half are connected in the straight-polarity manner, i.e., to be negative in polarity, and are used as trailing electrodes; the GMA welding process is applied on the side of said reverse-polarity consumable electrodes which are the leading electrodes; and the submerged-arc welding process is applied on the side of said straight-polarity consumable electrodes which are the trailing electrodes; thereby preventing magnetization of said pipe-blank and the resulting magnetic arc blow of the welding arc by causing lines of magnetic force produced by said direct electric currents for welding flowing through said current supply cables introduced into said pipe-blank to cancel each other, and also preventing spattering of molten droplets from said straight-polarity consumable electrodes.
摘要翻译：在通过金属电弧焊接方法沿着槽从内侧纵向焊接用于焊接钢管的管坯，其包括通过至少一个电流供应电缆串联提供给多个可消耗电极的直流电流作为焊接电流，使用偶数个可消耗电极; 所述偶数号的可消耗电极的一半以反极性方式连接，即极性为正极，用作引导电极，其余的一半以直极方式连接，即为负极极性，并用作拖尾电极; 在作为前导电极的所述反极性可消耗电极的一侧上施加GMA焊接工艺; 并且在作为后续电极的所述直极性可消耗电极的一侧上施加埋弧焊接工艺; 从而防止所述管坯的磁化和所产生的电弧电弧产生的磁弧由于通过引入到所述管坯中的所述电流供给电缆的所述直流电流产生的磁力线相互抵消，以及还防止熔融液滴从所述直极性可消耗电极溅射。

5. 发明授权

US4013868A Method of multiple gas shielded arc welding 失效
标题翻译：多气体电弧焊接方法
公开(公告)号：US4013868A
公开(公告)日：1977-03-22
申请号：US633384
申请日：1975-11-19
申请人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe
发明人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe
IPC分类号： B23K9/16 , B23K9/00 , B23K9/173 , B23K35/30 , B23K9/24
CPC分类号： B23K35/3053 , B23K9/1735
摘要： In a method of multiple electrode gas shielded arc welding wherein a plurality of electrodes are arranged along the welding seam line of a piece of metal to be welded and continuous gas shielded arc welding of the piece is accomplished simultaneously by the electrodes, the chemical composition of the electrode wire of the electrode or electrode group for depositing a preceeding layer or layers is selected to differ from that of the electrode wire of another electrode or electrode group for depositing a subsequent layer or layers, whereby the chemical composition of the weld metal made by the preceeding welding operation is brought near to that of the weld metal made by the following welding operation and thus the uniform properties are ensured for welding metals at the respective positions in the weld zone.

6. 发明授权

US4034179A Method of multiple electrode gas shielded arc welding 失效
标题翻译：多电极气体保护电弧焊方法
公开(公告)号：US4034179A
公开(公告)日：1977-07-05
申请号：US633020
申请日：1975-11-17
申请人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe
发明人： Fusao Koshiga , Jinkichi Tanaka , Itaru Watanabe
IPC分类号： B23K9/16 , B23K9/00 , B23K9/173
CPC分类号： B23K9/1735
摘要： In a multiple electrode gas shielded arc welding method wherein a plurality of electrodes are arranged along the welding seam line of a piece of metal to be welded and the continuous gas shielded arc welding of the piece is accomplished simultaneously by the electrodes, the chemical composition of a mixed shielding gas fed to the electrodes is selected in such a manner that the chemical composition of the shielding gas fed to the leading electrode or electrode group differs relative to that fed to the trailing electrode or electrode group to have a different active gas volume ratio and in this way the chemical composition of the weld metal layers formed by the preceeding and following welding operations are homogenizing to ensure uniformity of the properties at every positions in the weld zone.
摘要翻译：在一种多电极气体保护电弧焊接方法中，沿着待焊接的金属片的焊缝线布置多个电极，并且通过电极同时实现片的连续气体保护电弧焊接，化学组成供给到电极的混合保护气体被选择成使得供给到引导电极或电极组的保护气体的化学组成相对于向后电极或电极组馈送的保护气体的化学组成不同，以具有不同的活性气体体积比并且以这种方式，通过前面和后面的焊接操作形成的焊接金属层的化学组成是均质化以确保在焊接区域中的每个位置处的性质的均匀性。

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