Method for increasing hot stamping forming capability of magnesium alloy plate

Abstract

The invention belongs to the technical field of hot stamping of magnesium alloy plates, and particularly relates to a method for increasing the hot stamping forming capability of a magnesium alloy plate. The method comprises the steps of spraying UCON A type water-soluble media on the surface of the magnesium alloy plate, performing far infrared treatment and preheating a conveying belt and a die. Compared with the prior art, the method has the following advantages that UCON A type water-soluble medium quenching is matched with low-temperature far infrared treatment, so that the stamping forming capability of magnesium alloy can be increased; lubricating liquid is sprayed in a conveying process, so that the lubricating liquid is uniformly distributed, the production time is shortened, and the damage to the surface of the magnesium alloy plate can be reduced in a stamping process by using the lubricating liquid; the transmission time is shortened, and the conveying belt and the forming die are preheated, so that the time resistant stability can be improved in a magnesium alloy forming process, and the stamping yield is increased; and the method is suitable for the process with high requirements for the stamping forming depth of the magnesium alloy plate.

Description

technical field [0001] The invention belongs to the technical field of hot stamping of magnesium alloy plates, and in particular relates to a method for improving the hot stamping forming ability of magnesium alloy plates. Background technique [0002] Magnesium alloys have the characteristics of low density, high specific strength, high specific stiffness, good shock resistance, good anti-electromagnetic shielding performance, good compatibility and recyclability. Magnesium alloys have great potential as structural materials or functional materials. However, the plastic deformation ability of magnesium alloys is poor. The main reasons are: the commonly used magnesium alloys belong to the hexagonal close-packed structure, the plastic deformation ability at room temperature is poor, and there are few slip systems. This is the root cause of the poor plastic deformation ability; the magnesium alloy sheet obtained by rolling has a strong base structure, which is not conducive to...

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Problems solved by technology

[0002] Magnesium alloys have the characteristics of low density, high specific strength, high specific stiffness, good shock resistance, good anti-electromagnetic shielding performance, good compatibility and recyclability. Magnesium alloys have great potential as structural materials or functional materials. However, the plastic deformation ability of magnesium alloys is poor. The main reasons are: the commonly used magnesium alloys belong to the hexagonal close-packed structure, the plastic deformation ability at room temperature is poor, and there are few slip systems. This is the root cause of the poor plastic deformation ability; the magnesium alloy sheet obtained by rolling has a strong base structure, which is not conducive to the deep drawing of the sheet, and brings great impact on the stamping of the magnesium alloy sheet. Due to the above reasons, it is difficult for magnesium alloy sheets to be stamped and formed in the greenhouse. It has better forming ability under high temperature conditions. Compared with other metals, the specific heat capacity per unit area of ​​magnesium alloy has faster heat dissipation. Significantly lower, resulting in difficult control of forming temperature and high scrap rate

[0003] At present, the stamping production of magnesium alloy sheets usually adopts the method of reducing the temperature drop, which can increase the heating temperature of the furnace. The disadvantages are high energy consumption, serious surface oxidation of magnesium alloy sheets, and poor dimensional accuracy of stamping parts. The second is to use molds to heat magnesium The disadvantage of sheet blanks is that the production efficiency is reduced. Therefore, how to improve the pass rate and production efficiency of magnesium alloy sheet hot stamping is a technical problem that needs to be solved.