Groove for longitudinal and circular seams of large-diameter vessel and welding method
A large-diameter and groove technology is applied in the groove and welding fields for longitudinal and circumferential seams of large-diameter containers. It can solve the problems of penetrating cracks, affecting product production, shell cracks, etc. The effect of reducing stress corrosion cracking and reducing weld deformation
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Embodiment 1
[0025] A groove used for the longitudinal and circular seams of large-diameter containers. The groove is a double-sided U-shaped groove, which is welded on the inner and outer sides of the container. There is a groove gap between the U-shaped grooves on both sides. Processing grooves inside the container cylinder and surfacing welding in the grooves;
[0026] The U-shaped groove has unequal thickness structures on both sides, and the depth of one side of the deep U-shaped groove is 0.6-0.7 times the wall thickness of the container.
Embodiment 2
[0028] According to the bevel used for the longitudinal and annular seams of large-diameter containers described in Embodiment 1, the depth of the groove is 3-3.5mm.
Embodiment 3
[0030] According to the bevel used for the longitudinal and annular seams of large-diameter containers described in embodiment 1 or 2, there is a bevel gap of 4-5 mm between the U-shaped bevels on both sides.
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