Weld structure having resistance to brittle crack propagation

A structural and expansive technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve the problems of reduced strength of welded structures and long extension of brittle cracks, so as to prevent large-scale damage and high The effects of safety and high productivity
CN102712063AInactive Publication Date: 2012-10-03NIPPON STEEL CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NIPPON STEEL CORP
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed is a weld structure in which a steel plate weld joint is formed by butt-welding steel plates together, wherein: an anti-crack control section in which the propagation of brittle cracks generated in the steel plate weld joint are stopped is disposed on at least one section of the steel plate weld joint; and the outer peripheral section of an arrestor member configuring the anti-crack control section is formed on the front and rear of the steel plate weld joint in the lengthwise direction so as to intersect with the steel plate weld joint at an angle between 60 DEG to 120 DEG relative to the lengthwise direction. As a consequence, it is possible to prevent brittle cracks from propagating the weld joint or the base material even when brittle cracks form on the weld joint.
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Description

technical field

[0001] The present invention relates to a welded structure having resistance to the growth of brittle cracks, which controls and suppresses the growth of brittle cracks when brittle cracks occur in welded joints.

[0002] In particular, it relates to a welded structure having resistance to brittle crack growth that can control and suppress the propagation of brittle cracks even when a brittle crack occurs in a welded joint of a welded structure using a thick steel plate and can improve safety. Background technique

[0003] In recent years, welded structures represented by welded structures for ships such as large container ships and bulk carriers, architectural structures, and civil engineering steel structures have been required to have high safety against damage such as brittle cracks. In particular, the size of container ships has increased significantly. For example, large container ships of 6,000 TEU or more have been manufactured, and the steel plates o...

Claims

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