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Welding process evaluation method for first-grade nuclear container steel plate

A welding process and steel plate technology, which is applied in the field of welding process evaluation of steel plates for nuclear primary pressure vessels, and achieves the effect of wide application

Inactive Publication Date: 2012-11-14
大连船舶重工集团装备制造有限公司
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Problems solved by technology

However, when it is used in nuclear first-class equipment with high requirements, especially when the nominal wall thickness of the equipment exceeds 16mm, and its impact performance is required to be guaranteed, few domestic companies have made foreign nuclear power products, and there is no mature one in China at present. The experience of nuclear power equipment manufacturers can be used for reference, so the welding performance of the steel plate and the verification method of welding performance need to be determined urgently

Method used

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  • Welding process evaluation method for first-grade nuclear container steel plate
  • Welding process evaluation method for first-grade nuclear container steel plate
  • Welding process evaluation method for first-grade nuclear container steel plate

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Embodiment Construction

[0013] Firstly, cut the welding procedure qualification test piece with line drawing, the sample should be perpendicular to the longitudinal axis of weld 1, and the center line of the sample length should be on the center line of weld 1, and then mark the test piece on the test piece and the sample bag. sample number.

[0014] 1. Make tensile test specimen 3.

[0015] A) After the tensile sample 3 is made, the sample is then processed. Attention should be paid during processing. Before repairing the weld reinforcement, the test piece is allowed to be cold straightened. The weld reinforcement should be machined. Trimming to be flush with the base metal, the amount of processing should be as small as possible, in order to obtain approximately parallel surfaces as a principle, and process it to the required size. And mark the sample number on the sample and sample bag, and finally carry out dimensional inspection. The results of size inspection are shown in Table 1.

[0016] ...

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Abstract

The invention relates to the field of welding processes, in particular to a welding process evaluation method for a steel plate for a first-grade nuclear container. According to corresponding requirements of NB subsection of III section in ASME (American Society of Mechanical Engineers), by evaluating the welding process for the first-grade nuclear container steel plate, related experience of a test method for welding performances of a nuclear material is summarized and determined and the welding performance of the material in nuclear products is determined, so that the material can be widely applied to first-grade nuclear equipment.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a method for evaluating the welding technology of a steel plate for a nuclear primary pressure vessel. Background technique [0002] Steel plates for pressure vessels are widely used in non-nuclear pressure vessels, and as materials for non-nuclear pressure vessels, their performance has been widely recognized by nuclear power equipment manufacturers through welding assessment. However, when it is used in nuclear first-class equipment with high requirements, especially when the nominal wall thickness of the equipment exceeds 16mm, and its impact performance is required to be guaranteed, few domestic companies have made foreign nuclear power products, and there is no mature one in China at present. The experience of nuclear power equipment manufacturers can be used for reference, so the welding performance of the steel plate and the verification method of welding performance need...

Claims

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Application Information

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IPC IPC(8): G01D21/02
Inventor 刘焕潘清泉秦大秋晋富丽李春喜
Owner 大连船舶重工集团装备制造有限公司
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