Method and device for strong shear rolling forming of metal sheet

Abstract

The invention discloses a strong-shear rolling forming method and a strong-shear rolling forming device for a metal plate. Power is provided by friction force between the plate and rollers during rolling deformation, and the plate is subjected to the strong-shear deformation of dies, and then enters a part between the rollers for plate rolling deformation. The device comprises a double-roller rolling mill, a movable die upper template, a movable die lower template, a stand, a fixed die lower template and a fixed die upper template, wherein the fixed die lower template is fixedly arranged on the stand; the movable die lower template is hinged to the fixed die lower template, and is arranged on the stand through an oil cylinder; the fixed die upper template and the movable die upper template are arranged on the fixed die lower template and the movable die lower template through bolts respectively; the double-roller rolling mill is arranged at an outlet of a metal plate passage. The method and the device are flexible in die equal channel angular adjustment and low in cost; the rolling deformation and the shear deformation of the metal plate such as a magnesium plate and an aluminum plate can be effectively combined, crystal grains of the plate can be refined, the texture evolution of the plate can be controlled, and the mechanical performance and the forming performance of the plate can be improved.

Description

technical field [0001] The invention relates to a method and a device for forming metal plates by strong shearing and rolling. Background technique [0002] Lightweight alloys such as magnesium and aluminum alloys have excellent properties such as low density, high specific strength and specific stiffness, good elasticity, good impact resistance, corrosion resistance, easy surface coloring, good processability, and high recycling and regeneration properties. Performance, and widely used in aerospace, transportation, energy electronics, engineering machinery and other fields. At present, aluminum and magnesium sheets have quickly entered the field of automobile industry and become the preferred materials for automobile lightweight. The country's "12th Five-Year Plan for New Material Industry" proposes to develop 6016, 6022, and 6111 aluminum alloy sheets for automobiles, realize the industrialization of automobile aluminum alloy sheets with a thickness of 0.7-2.0mm and a wid...

AI Technical Summary

Problems solved by technology

But these methods and devices still have some deficiencies: one is that the angle of the isometric angle of the mold cannot be adjusted conveniently and flexibly, and it is necessary to make molds with different isometric angles, and the cost is high; the other is that the rolled plate is difficult to pass through the mold smoothly. That is, the plate has completed the rolling deformation, but cannot completely pass through the equal-diameter angle extrusion die to complete the shear deformation

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