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Plain butt welding process for high-strength hull structural steel

A technology of structural steel and welding technology, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of imperfect welding standards of high-strength steel, insufficient welding technology, and immature application, so as to reduce the ship construction cycle , Saving raw materials and improving labor efficiency

Active Publication Date: 2011-04-20
WUCHANG SHIPBUILDING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In China, the application range of high-strength steel is also gradually increasing, but the overall application is still immature, accounting for only about 10% of the total steel consumption, a small proportion
At present, the strength of high-strength steel in the national standard GB1499.2-2007 is 400MPa, the welding standard of high-strength steel is not perfect, and the design and research of related welding processes are insufficient

Method used

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  • Plain butt welding process for high-strength hull structural steel
  • Plain butt welding process for high-strength hull structural steel
  • Plain butt welding process for high-strength hull structural steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Using carbon dioxide gas shielded welding:

[0044] 1. The welding materials are as follows: welding wire GFR-110K3 (E761T1-K3C) Φ1.2mm, carbon dioxide gas purity ≥ 99.5%.

[0045] 2. Welding sequence and groove size such as figure 2 shown.

[0046] 3. The welding specification parameters are shown in the following table 1:

[0047] Table 1 Carbon dioxide gas shielded welding

[0048]

Embodiment 2

[0050] Welding with manual arc welding:

[0051] 1. The welding materials are as follows: electrode CHE807RH (E8015-G) Φ4mm.

[0052] 2. Welding sequence and groove size such as image 3 shown.

[0053] 3. The welding specification parameters are shown in the following table 2:

[0054] Table 2 arc manual welding

[0055]

[0056]

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Abstract

The invention relates to a process for welding a high-strength hull structure steel, in particular to a plain butt welding process for a high strength hull structural steel plate (CCSE69040mm). The butt welding process is characterized in that effective specifications for bevel for welding, weld preheating, welding temperature, welding sequence, welding variables and after-welding cold treatment are provided. The plain butt welding process has the advantages of enabling the process of welding a super-thin high strength steel plate to be implemented smoothly, improving the operating efficiency, saving the raw materials, reducing the production cost, reducing the shipbuilding period, and filling a domestic technical blank on the welding of a high strength thick hull structural steel (CCSE69040mm).

Description

technical field [0001] The invention particularly relates to a welding process for high-strength steel for ships. Background technique [0002] Welding technology is one of the key technologies of modern shipbuilding engineering, and the quality of ship welding in hull construction is an important indicator for evaluating shipbuilding quality. Therefore, the advancement of welding technology is of great significance to promote the development of shipbuilding production. Internationally, high-strength steel welding technology has developed rapidly in terms of welding material composition and process design, and its application fields are also expanding. In the field of steel structure manufacturing involving special requirements or harsh working conditions, high-strength steel occupies an increasingly important position and has been widely used in ships, bridges, automobiles, high-rise building construction and other fields. In China, the application range of high-strength ...

Claims

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Application Information

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IPC IPC(8): B23K9/00B23K9/23B23K9/235B23K9/095B23K33/00
Inventor 严俊周健王宇丁岚陈诺黄春娥
Owner WUCHANG SHIPBUILDING IND
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