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Welding method of maritime crane barrel neck opening

A welding method and crane technology, applied in welding equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of increasing welding workload, difficult to control deformation, unfavorable promotion, etc., to reduce machining workload, improve qualification rate, The effect of promoting

Active Publication Date: 2014-07-30
南通中集太平洋海洋工程有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the special material of the neckline structure of the marine crane cylinder, high-strength steel S690 is selected, and the size is large, the deformation during the welding process is not easy to control, which increases the workload of welding, and the pass rate is low, which is not conducive to popularization

Method used

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  • Welding method of maritime crane barrel neck opening
  • Welding method of maritime crane barrel neck opening
  • Welding method of maritime crane barrel neck opening

Examples

Experimental program
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Embodiment Construction

[0051] The welding method of the neckline of the marine crane barrel includes the following steps:

[0052] A. Welding raceway plate 1:

[0053] 1) if figure 1 As shown, make the tire frame 101 for welding the raceway plate, lift the five-section raceway plate to the tire frame, and position it to ensure that the positive tolerance is ?10160 ;

[0054] 2) The height of the raceway plate 1 is 1260mm. During the welding process, it is easy to form a cone. In order to ensure that the vertical straightness is less than 2, it is necessary to de-weld the five joints 102 at the joint of the raceway plate 1 at the same time. More, the tack welding is on the outside, with a round steel transition, and the upper and lower ends of the seam 102 are equipped with guide and arc extinguishing plates, such as figure 2 Shown: Weld 2 / 3 of the inner side A of the tailor seam 102 first, then clean up and check the outer side B, then weld the outer side B of the tailor seam 102, and finally w...

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Abstract

The invention discloses a welding method of a maritime crane barrel neck opening. The welding method comprises the following steps: welding a rolling passage plate, welding an annular plate assembly, welding an annular plate assembly and a rolling passage plate, welding a box body structure and a peripheral plate, welding a lower cone, and finally folding the box body structure and a cone. The welding method has the advantages that the maritime crane barrel neck opening is manufactured according to the welding method strictly through repeated verifications of a plurality of items, so that the allowance can be effectively reduced, the welding workload is reduced, the machining workload is reduced, the deformation of the barrel neck opening can be well controlled, the qualified rate of finished products is improved, and the welding method is beneficial to popularization.

Description

technical field [0001] The invention relates to a welding deformation control method, in particular to a welding method for a large-size cylinder neckline of a marine crane. Background technique [0002] Marine energy has attracted more and more attention from all over the world, and the rise of offshore cranes has been sought after. However, due to the special structure material of the neckline of the marine crane cylinder, the high-strength steel S690 material is selected, and the size is large, the deformation during the welding process is not easy to control, which increases the workload of welding, and the pass rate is low, which is not conducive to popularization. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a welding method that can effectively control the structural deformation of the marine crane cylinder. [0004] In order to solve the problems of the technologies described above, the technical sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K31/02
CPCB23K31/02
Inventor 杨丽苹杨宏田文会张曦
Owner 南通中集太平洋海洋工程有限公司
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