Welding method of deck structure of stainless steel compound plate for railway steel bridge

A clad steel plate and welding method technology, applied in welding equipment, welding/welding/cutting items, arc welding equipment, etc., can solve the problem that stainless steel clad steel plate is not suitable for large-scale production of bridge deck structures, the labor intensity of welding workers is high, and the welding seam The quality is not easy to guarantee and other problems, to achieve the effect of facilitating mass production, ensuring corrosion resistance, and realizing mechanization and automation
CN101797667AActive Publication Date: 2010-08-11725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Publication Date
2010-08-11

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Abstract

The invention discloses a welding method of a deck structure of a stainless steel compound plate of a railway steel bridge, which comprises the following steps: selecting structural steel for a bridge with thickness of 16-20mm as a base layer, selecting austenitic stainless steel with thickness of 2-4mm as a multiple layer, and removing 3-6mm of cladding material materials at each of two edges of welding grooves in advance, wherein the groove angle is 45-65 degrees, and the groove spacing is 4-8mm; the method comprises the following steps: firstly, assembling positioned welding, and then, carrying out backing welding by CO2 gas shielded welding; then, carrying out welding of the base layer by submerged-arc welding; and finally, carrying out welding of a transition layer and the multiple layer by the CO2 gas shielded welding. By adopting a specific groove type, the invention eliminates uncertain human factors and solves the problems that the thickness of the deposited metal of the base layer is insufficient, the multiple layer can be molten by mistake when the substrate layer is welded, and the like; the reverse formation is good, so that the reverse back gouging process is omitted; and the invention has the advantages of good assembly quality and easy realization of mechanization and automation, improves the production efficiency, and is convenient for ensuring the corrosion resistance of the multiple layer.
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Description

technical field

[0001] The invention relates to the technical field of welding of stainless steel clad steel plates, in particular to a welding method for a bridge deck structure of stainless steel clad steel plates used for railway steel bridges. Background technique

[0002] Stainless steel clad steel plate is an ideal engineering structural material. It has a wide range of material combinations and thickness ratios, so that the performance and size of the material can be perfectly matched, and the advantages of the material can be fully utilized to obtain good corrosion resistance of the existing clad material. , and the high strength and toughness of the base material, so it is often the material of choice for designers when solving complex and important engineering structures. With the rapid development of bridge construction, adopting new technologies, new materials and highlighting innovation have become the guiding ideology of bridge designers. Stainless steel clad ...

Claims

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