Welding repair evaluation method

A weld repair and repair technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the hidden dangers of product quality, cannot guarantee the effective and effective method of dividing the heat-affected zone, and cannot divide the heat-affected zone quickly and effectively. , to achieve the effect of high efficiency and effective division method

Active Publication Date: 2018-06-01
HIMILE MECHANICAL MFG
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AI Technical Summary

Problems solved by technology

Rework poses a great hidden danger to product quality
The heat-affected zone cannot be divided quickly and effectively, and the division method of the heat-affected zone cannot be guaranteed to be effective, providing an effective reference for the quality inspection of the weld

Method used

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Embodiment 1

[0043] Embodiment 1 Welding repair evaluation method

[0044] As shown in the figure, the present invention provides a welding repair evaluation method, comprising the following steps:

[0045] Step 1, first perform welding according to the qualified WPS, such as Picture 1-1 shown.

[0046] Step 2, using cold working methods, such as mechanical processing, to remove the weld seam and part of the heat-affected zone on one side of the original weld seam, and the heat-affected zone removed is the upper or middle upper part of the heat-affected zone on one side;

[0047] However, some remaining original welds must be guaranteed.

[0048] Such as Figure 1-2 shown. The preferred solution is: according to different rework welding methods, determine different residual amounts. For example, with GTAW rework, a minimum of 6mm remains of the original weld. Use SMAW, FCAW, GMAW for rework, with at least 8mm remaining of the original weld. Prevent the original heat-affected zone fr...

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PUM

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Abstract

The invention discloses a welding repairing evaluation method which is an evaluation method for new welding joints formed by repairing of original welding joints. According to the welding evaluation method, a practical scheme can be provided for repairing of the welding joints; hidden dangers cause by repairing to the product quality can be avoided to a greater extent; the welding repairing evaluation method is suitable for welding repairing process evaluation of multiple materials; the efficiency is high, evaluating of all regions is not required, only the weak parts are required to be detected, the welding quality of the whole repaired welding joints can be ensured; a dividing method of heat influence regions is practical and effective, and effective reference bases are provided for quality detecting of the welding joints; and the application range is wide, and the repaired welding joints of materials which is very sensible to heat influence can be effectively evaluated.

Description

technical field [0001] The invention relates to a welding method, in particular to a welding repair evaluation method, which belongs to the technical field of welding production. Background technique [0002] The secondary heat impact will seriously affect the performance of the weld, mainly including hardness and impact. If it is stainless steel, especially the weld of dual-phase steel, it will also affect the ferrite content. Therefore, rework will bury a safety hazard in the future use of the product. [0003] The current evaluation method for repaired welds does not have the focus of evaluation, which leads to low evaluation efficiency and it is difficult to effectively analyze the quality of repaired welds. The scope of the existing assessment program is limited, especially for the repair of special materials, and there is no practical assessment program. Repairs cause great hidden dangers to product quality. The heat-affected zone cannot be divided quickly and effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/12G01N23/02
CPCB23K31/125G01N23/02
Inventor 孟祥光张增军岳波孙光绪宫耀宇唐立星魏效辉张兆和赵平
Owner HIMILE MECHANICAL MFG
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