Closed section steel hot roll bending production composite process

Abstract

The invention relates to a closed section steel hot roll bending production compound process. The closed section steel hot roll bending production compound process comprises the following procedures of a forming procedure, specifically, performing hot roll bending forming on a high-temperature component; a first pre-welding procedure, specifically, conducting pre-welding on the closed position in a high-frequency welding mode to form a first pre-welding seam; a welding seam cooling procedure, specifically, cooling the first pre-welding seam; a sizing procedure, specifically, conducting sizing by adopting a hot sizing mode; a closed section steel cooling procedure, specifically, cooling the closed section steel; a cutting-off procedure, specifically, cutting the closed section steel to a fixed length; a welding seam cutting procedure, specifically, cutting the first pre-welding seam; a second pre-welding procedure, specifically, cutting the closed position where the first pre-welding seam is pre-welded to form a second pre-welding seam; a fine welding procedure, specifically, performing the internal and external welding on the second pre-welding seam to form a fine welding seam; a flaw detection procedure, specifically, performing the flaw detection on the fine welding seam; and a collecting procedure, specifically, collecting the closed section steel and putting in storage. The closed section steel hot roll bending production composite process has the beneficial effects that the process can adapt to production of different closed section steels, is high in universality, adopts a hot sizing mode for the sizing, and is high in production efficiency.

Description

technical field [0001] The invention relates to the technical field of closed section steel production, in particular to a composite process for hot roll bending production of closed section steel. Background technique [0002] Closed section steel is generally made of high-temperature steel strip or high-temperature steel plate, and is produced by roll-forming technology. However, the traditional roll-forming process has either low production efficiency and high production cost, or is vulnerable to factors such as welding methods, welding speeds, welding Due to the limitation of various production conditions such as frequency, it cannot be universally used in the production of steel with various thicknesses, and it is difficult to meet the production needs. Contents of the invention [0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a composite process for hot roll bending of closed section steel, which...

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Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a composite process for hot roll bending of closed section steel, which is used to solve the problems of low production efficiency and poor production versatility of closed section steel in the prior art.

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