Rolling device and forming method of continuous variable-section sheet steel

Abstract

The invention relates to a rolling device and forming method of continuous variable-section sheet steel. The rolling device comprises a bottom plate, a shell, an upper rolling module and a lower rolling module, wherein the shell is arranged at the upper end of the bottom plate, the upper rolling module is arranged at the upper end of the interior of the shell, and the lower rolling module is arranged at the lower end of the interior of the shell. The rolling device can be used for solving the problems that existing continuous variable-section sheet steel is usually connected in a welding modeand then is subjected to punch forming, the forming performance of the whole plate is reduced due to the hardening action of welding seams of a panel and a heat affected zone of the panel, when the continuous variable-section sheet steel formed by a rolling process is produced, the distance between roller gaps is adjusted through a hydraulic cylinder, the adjusting accuracy of the hydraulic cylinder is low, so that rolled plates do not meet the use requirements, has better bearing capability, obviously reduces the weight and improves the overall performance of the rolled plates.

Description

technical field [0001] The invention relates to the technical field of roll rolling, in particular to rolling equipment and a forming method for thin steel plates with continuously variable cross-sections. Background technique [0002] Environmental pollution and energy shortage have become more and more serious problems in today's society. In order to meet the increasingly stringent environmental protection challenges, the world's automobile industry is taking active actions to develop environmentally friendly vehicles. An important symbol of an environment-friendly car is low fuel consumption and low emissions, and an important measure to reduce fuel consumption and emissions is to reduce the weight of the car body. Based on lightweight structural materials, a new type of thin plate that can significantly reduce the weight of the vehicle body——continuous variable-section thin steel plate is proposed. There are two kinds of variable-section thin plates, one is tailor-welded...

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Problems solved by technology

[0005] The present invention can solve the problem that the existing thin steel plates with continuously variable cross-sections are usually connected by welding, and then stamped and formed, but the weld seam of the panel and the hardening effect of the heat-affected zone in this way lead to the decrease of the formability of the whole plate, and During the production of thin steel plates with continuously variable cross-sections formed by the roll rolling process, the gap between the rolls is usually adjusted by adjusting the hydraulic cylinders. However, the adjustment accuracy of the hydraulic cylinders is low, and the rolled plates do not meet the requirements for use. and other difficult problems

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