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Method of manufacturing vertical narrow gap welding joint and vertical narrow gap welding joint
Method of manufacturing vertical narrow gap welding joint and vertical narrow gap welding joint
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机译：垂直窄间隙焊接接头和垂直窄间隙焊接接头制造方法
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摘要
Provided is a method for producing a vertical narrow-groove welding joint in which a welded part has exceptional toughness, the method involving the use of a thick-walled high-strength steel material. When two steel materials are butted via a narrow groove having a groove angle of 20° or less and are joined by vertical gas shield arc welding using a weaving, the advancement speed (mm/min) of vertical welding and the multiplicative inverse f(s-1) of a time (s) required for synchronizing the weaving in the vertical gas shield arc welding are adjusted to within ranges that satisfy the relationship v/60/f ≤ 9.0.
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