Continuous production method and line for variable-thickness profile

Abstract

The invention discloses a continuous production method and line for a variable-thickness profile. Hot-rolled and pickled or cold-rolled equal-thickness strip steel is used as a raw material, all processes from rolling to surface coating to forming and cutting and the like of the strip steel are completed on line, production processes such as uncoiling, welding, variable-thickness rolling, degreasing, on-line heat treatment, online coating, flattening, roll-in forming, cutting and stacking are integrated, and the continuous production method is used for the fully-continuous automatic production of the variable-thickness profile. By using the continuous production method disclosed by the invention, the continuous production and coating of the variable-thickness profile can be realized, the defects of high production cost, high labor intensity, continuous production incapability and surface coating incapability of the existing variable-thickness profile are overcome, the production efficiency of the variable-thickness profile is greatly increased, and the favorable economic benefit is obtained. By using the continuous production method, a single or partially continuous production process in the prior art can be replaced, the production process of the variable-thickness profile can be simplified, and the continuous production of the variable-thickness profile can be realized.

Description

technical field [0001] The invention relates to profile processing technology, in particular to a continuous production method and a continuous production line for variable-thickness profiles. Background technique [0002] In order to achieve the goal of lightweight automobiles, the automotive industry is currently promoting the use of a strip with a continuously changing longitudinal thickness obtained through rolling—a thickened plate; after the thickened plate is formed, it forms a profile with variable thickness, variable thickness The profile can replace some parts on the car, reduce the weight of the car, and finally realize the energy saving and emission reduction of the car. [0003] At present, most of the existing technologies at home and abroad use a separate production process for the production of variable-thickness plates and the processing of variable-thickness profiles. In the prior art, steel coils of equal thickness are produced by processes such as uncoil...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a continuous production method and continuous production line of variable thickness profiles, which can realize continuous production and continuous coating of variable thickness profiles, and overcome the high production cost, high labor intensity, non-continuous production of existing variable thickness profiles, The disadvantage that the surface cannot be coated greatly improves the production efficiency of variable thickness profiles and obtains good economic benefits

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