A welding method for a cylinder body and a safety end
A welding method and safety end technology are applied in the field of welding of the cylinder body and the safety end, which can solve problems such as joint defects, and achieve the effects of good welding quality, efficient maintenance and reduction of welding stress.
Active Publication Date: 2021-09-17
DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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Problems solved by technology
After the equipment is completed, if joint defects or base metal defects are found between the primary side connection pipe and the safety end, small-area repairs are usually completed by manual welding and local welding. There is no technology and case for the overall removal of the safety end and automatic welding repair
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[0030] In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, only It is for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the invention.
[0031] In the description of the present invention, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distingu...
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Abstract
The invention discloses a welding method for a cylinder body and a safety end. Firstly, a surfacing welding boss is arranged, and then the safety end is cut out, and the end surface of the cylinder body to be welded is trimmed to form a bevel structure. Correspondingly, the safety end is also symmetrically provided with a bevel structure. , when the two are butted together, a complete groove structure can be formed. Based on the above groove structure, a full penetration structure can be realized, which can avoid the internal defects of the original nickel-based isolation layer caused by the re-welding heat cycle, and the barrel and safety end The all-position automatic welding process can be used to realize re-welding of dissimilar steels under complex working conditions. The invention is used in the field of maintenance of nuclear power equipment.
Description
technical field [0001] The invention relates to the field of maintenance of nuclear power equipment, in particular to a welding method for a cylinder body and a safety end. Background technique [0002] Dissimilar steel welding: welding of different groups of materials. [0003] All-position automatic welding: the product is static, the automatic welding equipment rotates, and the welding position undergoes flat welding, vertical welding and overhead welding. [0004] Root backing plate: connected to the edge of the weld to solve many defects caused by the inability to weld on both sides and avoid burn-through to a certain extent. [0005] During the manufacture of a steam generator in a nuclear power project, the impact test of the welding heat-affected zone did not meet the design requirements due to the uneven quality of the base material of the safety end welding witness. After investigation and discussion on the solution, the following plan was proposed: cut off the o...
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IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 江国焱李恩邹杰王勇华张丹萍池乐忠刘裔兴
Owner DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD