Large reduction rolling method for magnesium alloy

Abstract

The invention relates to a large reduction rolling method for magnesium alloy. According to the rolling method, a hard alloy lining plate is additionally arranged on the upper surface or the lower surface of the magnesium alloy, or two hard alloy lining plates are additionally arranged on the upper surface and the lower surface of the magnesium alloy at the same time, and the added hard alloy lining plates are rolled synchronously together with the magnesium alloy. The rolling method includes the steps that after a high temperature lubricating agent is evenly smeared on the surfaces of the lining plates and the surface of the magnesium alloy, the high temperature lubricating agent, the lining plates and the magnesium alloy are simultaneously placed into a heating box to be heated, after the temperature rises to a preset temperature, standing and thermal insulation are performed for a certain period of time, one hard alloy lining plate is placed on the upper surface or the lower surface of magnesium alloy blank, or the two hard alloy lining plates are placed on the upper surface and the lower surface of the magnesium alloy at the same time, and the hard alloy lining plates and the magnesium alloy are simultaneously fed into the position between rollers so that rolling can be completed. Through the method, the single pass reduction of the magnesium alloy can be greatly increased in the rolling process, the number of rolling passes is decreased, magnesium alloy crystalline grains are thinned, the texture is weakened, magnesium alloy plates with high strength and plasticity are prepared, and the large reduction rolling method for the magnesium alloy is also suitable for the large deformation rolling process of titanium, manganese and metal-matrix composite materials.

Description

technical field

[0001] The invention relates to the field of metal materials, in particular to a rolling method of a high-performance magnesium alloy. Background technique

[0002] As the lightest metal material for engineering structures, magnesium alloy has the advantages of high specific strength and specific stiffness, good electrical and thermal conductivity, good damping and shock absorption and electromagnetic shielding performance, and good regeneration and recycling. It is used in automobiles, communication equipment, Popular in aviation and other fields. Especially in terms of light weight, it has significant advantages that are difficult to replace. However, the commonly used magnesium alloys have poor plastic deformation ability and low tensile strength, which limit their application in many occasions. Rolling is one of the most important shaping processing methods for magnesium alloy sheets, especially magnesium alloy thin sheets. The pros and cons of its tech...

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