Large-pipe-diameter large-thickness high-strength steel cylinder welding process

A high-strength steel, welding process technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve problems such as the accuracy of the cylinder body not up to standard, to ensure the flatness and verticality, ensure the accuracy of components, The effect of ensuring structural accuracy
CN112296478APending Publication Date: 2021-02-02CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
Publication Date
2021-02-02

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Abstract

The invention relates to the technical field of steel cylinder welding, and discloses a large-pipe-diameter large-thickness high-strength steel cylinder welding process. The large-pipe-diameter large-thickness high-strength steel cylinder welding process comprises the following steps: cutting the edge of a barrel section to form an inclined groove; forming a barrel body through at least two barrelsections, and carrying out positioned welding along the circular seam; and arranging an even number of welders at equal intervals in the circumferential direction of a weld joint, and carrying out segmented welding in the same direction. A multi-layer welding method is adopted in the welding manner, and staggered welding is conducted on weld bead welding heads in adjacent layers at preset intervals. According to the large-pipe-diameter large-thickness high-strength steel cylinder welding process in the embodiment, segmented welding is conducted on the weld joint, an even number of welders areadopted to be arranged in the circumferential direction of the weld joint at equal intervals and conduct welding in the same direction, barrel body deformation caused by stress concentration in the welding process is avoided, the structural precision is guaranteed, the flatness and perpendicularity of a barrel body flange can be effectively guaranteed, and the component precision is guaranteed.
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Description

technical field

[0001] The invention relates to the technical field of steel cylinder welding, in particular to a large-diameter, large-thickness, high-strength steel cylinder welding process. Background technique

[0002] In the construction process of product ships and offshore platforms, cranes are one of the important equipment on engineering ships and offshore platforms. They are responsible for lifting and transporting various equipment and materials. The accuracy requirements are correspondingly more stringent. During the construction of the cylinder, due to the construction sequence, welding heat input, welding shrinkage and other reasons, the accuracy of the cylinder is often not up to standard. Contents of the invention

[0003] In view of this, the present invention aims to propose a large-diameter, large-thickness, high-strength steel cylinder welding process to solve the problem of cylinder construction due to construction sequence, welding heat input, and we...

Claims

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