On-line Cutting Method of High-strength Sheet Rolling

Abstract

The invention relates to a processing technology of plate pressing sectional materials, in particular to a high-strength plate rolling and a on-line cutting method. According to the technology, the method includes the steps of decoiling coil stock, flattening the coil stock, roll forming, straightening sectional materials and cutting on-line. The method is characterized in that a step of automatic punching is added between the step of flattening the coil stock and the step of roll forming, the step of automatic punching is used for punching a row of holes in boards, when the rolling formed sectional materials are cut in the punching location, cutting force bearing points can be reduced by more than one thirds, the cutting stress is reduced, and the cutting deformation is reduced. The method mainly solves the technical problem that in the prior art fracture is prone to occur during cutting on-line and the cutting deformation of the rolling sectional materials is large, previous parking cutting of the plate rolling with high strength being changed into on-line synchronous cutting can be achieved, and the production efficiency of production lines can be improved. In addition, by means of positioning cutting, the consistency of on-line punching locations is guaranteed, the production efficiency and the use ratio of the plate rolling with high strength are effectively improved.

Description

technical field [0001] The invention relates to a high-strength plate rolling profile processing technology, in particular to a high-strength plate rolling on-line cutting method. Background technique [0002] Undertaking the Changan Peugeot Citroen B81 / B753 car longitudinal beam reinforcement plate and door anti-collision bar project, according to the customer's request to use high-strength plate raw materials with a tensile strength > 1200Mpa for roll forming. With the assistance of the engineering technology department and the production department, combined with the existing roll forming process, an on-line synchronous cutting process for high-strength plate rolling is proposed. [0003] In the prior art, the process steps are generally designed as follows: (1) Coil uncoiling; (2) Coil leveling; (3) Roll forming; (4) Profile straightening; (5) Online cutting. [0004] However, the cutter is more likely to break when cutting online according to the above technological...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-strength plate rolling on-line cutting method, which mainly solves the technical problem that the cutting knife is easy to break when the existing process is carried out on-line cutting and will cause large deformation of the rolling profile cut. Rolling can be realized from the previous stop cutting to online synchronous cutting, which can not only improve the production efficiency of the production line

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