One-side welding and double-side forming method for T-shaped joint of closed supporting structure

A single-sided welding double-sided, supporting structure technology, used in welding equipment, welding accessories, arc welding equipment, etc., can solve the problem that the quality of the back of the weld cannot be guaranteed, the amount of misalignment cannot be accurately controlled, and the assembly accuracy requirements are high. problems, to avoid root welding penetration, optimize welding process, and ensure the effect of penetration

Pending Publication Date: 2022-01-28
SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some T-joint bevel forms in existing supporting structures are as follows: figure 1 As shown, the welding method including the groove of the upper plate and the groove of the bottom plate is argon tungsten arc welding, but the requirements for assembly accuracy are relatively high, especially the misalignment between the groove of the upper plate and the groove of the bottom plate needs to be controlled Within 2mm, and as figure 2 Some of the supporting structures shown (such as supporting rings) are formed by coiled plates, and there are some deviations in their ellipticity, and the amount of misalignment cannot be accurately controlled during assembly. cannot be guaranteed

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  • One-side welding and double-side forming method for T-shaped joint of closed supporting structure
  • One-side welding and double-side forming method for T-shaped joint of closed supporting structure
  • One-side welding and double-side forming method for T-shaped joint of closed supporting structure

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Embodiment Construction

[0026] based on the following Figure 3 ~ Figure 6 , specifically describe the preferred embodiment of the present invention.

[0027] For the T-joint whose back cannot be cleaned and the amount of misalignment cannot be guaranteed to be within 2mm, the invention can reduce the assembly accuracy requirements and the sensitivity to misalignment by rationally designing the groove form and size, controlling the assembly gap, and optimizing the welding process. , Effectively realize the closed support structure T-joint single-sided welding and double-sided forming.

[0028] In one embodiment of the present invention, a closed support structure T-joint single-sided welding and double-sided forming method is provided, which specifically includes the following steps:

[0029] Step S1, processing the welding groove of the closed support structure;

[0030] In the present invention, there is no need to process grooves on the side of the bottom plate, only welding grooves are processe...

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Abstract

Provided is a one-side welding and double-side forming method for a T-shaped connector of a closed supporting structure; a welding groove of the closed supporting structure is processed, the closed supporting structure and a bottom plate are assembled, and a gap is formed between the welding groove of the closed supporting structure and the bottom plate; and a closed annular welding area between the closed supporting structure and the bottom plate is welded by adopting a welding mode of combining symmetrical welding and leapfrogging welding and a welding method of manual electric arc welding. The groove form and size of the closed supporting structure are reasonably designed, the truncated edge thickness heat dissipation condition of an adopted V-shaped groove form is superior to that of a U-shaped groove, weld penetration can be effectively prevented, the assembly clearance is controlled, the welding process is optimized, the assembly precision requirement and misalignment sensitivity can be reduced, one-side welding and double-side forming of the T-shaped joint are effectively achieved, the back of a root is ensured to be fully fused, and meanwhile, the defects of root penetration or undercut and the like are avoided.

Description

technical field [0001] The invention relates to a method for one-side welding and double-side forming of a T-shaped joint of a closed support structure. Background technique [0002] In the field of pressure vessels, for example, there are some T-joints in the support structure of nuclear power main equipment. Due to structural closure and other reasons, the T-joints cannot be cleaned after welding, so it is necessary to realize single-sided welding and double-sided molding. In order to achieve single-sided welding and double-sided forming at the root of the weld and ensure the penetration quality of the root of the weld, the assembly accuracy must be controlled, such as the amount of misalignment and the assembly gap. Some T-joint bevel forms in existing supporting structures are as follows: figure 1 As shown, the welding method including the groove of the upper plate and the groove of the bottom plate is argon tungsten arc welding, but the requirements for assembly accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00B23K9/32
CPCB23K9/00B23K9/0026B23K9/32
Inventor 王计辉张茂龙朱志华白桦赵方舟刘鸣宇
Owner SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD
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