Narrow-gap submerged-arc welding method and equipment for saddle-shaped adapter tube groove

A submerged arc welding and narrow gap technology, which is applied in welding equipment, arc welding equipment, metal processing equipment, etc., can solve the problems of high technical requirements for welders, high labor intensity, low welding quality and efficiency, and overcome welding labor intensity Large, overcome the effect of high labor intensity and stable quality

Inactive Publication Date: 2018-05-08
CFHI DALIAN HYDROGENANT REACTOR +1
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Problems solved by technology

[0003] According to the above-mentioned technical problems, a narrow-gap submerged arc welding method and equipment for saddle-shaped joint grooves are provided, which are used to solve the existing welding methods for barrel joints and joints that are applied to such requirements. Disadvantages such as low quality and efficiency, and high technical requirements for welders

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  • Narrow-gap submerged-arc welding method and equipment for saddle-shaped adapter tube groove
  • Narrow-gap submerged-arc welding method and equipment for saddle-shaped adapter tube groove
  • Narrow-gap submerged-arc welding method and equipment for saddle-shaped adapter tube groove

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Embodiment Construction

[0018] Such as Figure 1 to Figure 3 As shown, a narrow gap submerged arc welding method for a saddle-shaped pipe groove includes the following steps:

[0019] A saddle-shaped groove A is processed on the outer wall of the barrel joint workpiece, and a saddle-shaped groove B is processed at the nozzle of the connecting workpiece; the saddle-shaped groove A and the saddle-shaped groove B are saddle-shaped single U lines with blunt edges Groove.

[0020] A saddle-shaped single U bevel is used between the butt joints of the barrel joint workpiece and the connecting pipe workpiece, and a single U-shaped narrow gap submerged arc groove with a blunt edge is processed on the two workpieces respectively.

[0021] During processing, there is no need to leave a margin for the two circular blank workpieces, and the groove is directly processed under the drawing size. The groove form is a single U-shaped groove with a blunt edge.

[0022] The saddle-shaped groove A and the saddle-shaped...

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Abstract

The invention discloses a narrow-gap submerged-arc welding method and equipment for a saddle-shaped adapter tube groove. The narrow-gap submerged-arc welding method comprises the following steps of: processing a saddle-shaped groove A in the outer wall of a tube section workpiece, and processing a saddle-shaped groove B at a tube hole of an adapter tube workpiece; and enabling the saddle-shaped groove A and the saddle-shaped groove B to be in butt-joint and superposed to form a saddle-shaped interface, and integrally fastening an assembly of the tube section workpiece and the adapter tube workpiece on a welding positioner. The narrow-gap submerged-arc welding method and equipment for the saddle-shaped adapter tube groove disclosed by the invention realizes automatic welding of the tube section and adapter tube butt-joint way, overcomes the defects of great labor intensity, low welding quality and efficiency, and high requirements on skill of a welder of current manual electric-arc welding, and has very important practical significance while applied to the heavy container manufacturing field.

Description

technical field [0001] The invention relates to the technical field of narrow-gap submerged arc welding, in particular to a method and equipment for narrow-gap submerged arc welding of low-alloy steel saddle-shaped socket grooves. Background technique [0002] At present, the technical requirements for some special heavy-duty container products with super-large thickness clearly stipulate that the plug-in barrel-joint welding method cannot be adopted, and the design of the placement-type bevel form can only be purchased by manual arc welding at present. Welding, due to the large size of the nozzle and deep groove, this welding method has the disadvantages of high labor intensity, low welding quality and efficiency, and high technical requirements for welders. Contents of the invention [0003] According to the above-mentioned technical problems, a narrow-gap submerged arc welding method and equipment for saddle-shaped joint grooves are provided, which are used to solve the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/12B23K33/00
CPCB23K9/12B23K9/18B23K33/004
Inventor 谷丰谷文蔡景瑞
Owner CFHI DALIAN HYDROGENANT REACTOR
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