发明名称 |
Method of large current gas shielded arc welding |
摘要 |
A method of large current gas shielded arc welding wherein the welding is accomplished at high speed by a single electrode or tandem sequence electrodes in an atmosphere of a mixed shielding gas comprising essentially of an inert gas with an addition of less than 30% of carbon dioxide gas or less than 5% of oxygen and supplied at an overall flow rate of 50 to 200 l/min by using large diameter solid wire consumable electrodes of low alloy steel material with a diameter of 3.0 to 6.4 mm phi under the following conditions: welding speed 300 to 1500 mm/min; welding current, 600 to 1500 amp; and arc voltage, 23 to 36 volts. With this method, the welding of steel can be accomplished at high speeds with a reduced heat input and an improved efficiency and it is particularly well suited for the welding of open tubes for very low temperature line pipe which must retain a high degree of toughness at very low temperatures.
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申请公布号 |
US4071732(A) |
申请公布日期 |
1978.01.31 |
申请号 |
US19750634322 |
申请日期 |
1975.11.21 |
申请人 |
NIPPON KOKAN KABUSHIKI KAISHA |
发明人 |
TANAKA, JINKICHI;WATANABE, ITARU |
分类号 |
B23K9/16;B23K9/173;(IPC1-7):B23K9/16 |
主分类号 |
B23K9/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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