Preparation method of magnesium alloy new energy automobile battery box

Abstract

The invention belongs to the technical field of mechanical manufacturing, and discloses a preparation method of a magnesium alloy new energy automobile battery box. On the basis of AZ91D and AM60 magnesium alloys, rare earth element gadolinium and a grain refinement inoculant are added for smelting, impurities on the surface of a melt are removed, the melt is refined and subjected to heat preservation, and a battery box die casting is formed through die casting of a battery box die; the battery box die casting is subjected to heat treatment and micro-fox oxidation treatment, the treated battery box die casting is subjected to online flaw detection, and the damaged battery box die casting is separated in time; numerical control punching and tapping are carried out on the battery box die casting through a machining production line; and surface treatment and vacuum ion plating are carried out on the battery box die casting to obtain a battery box finished product. The strength and toughness of the magnesium alloy are improved by adding the rare earth element gadolinium, the alloy is subjected to grain refining by adding the grain refining inoculant, and the plasticity of the magnesium alloy is improved, so that the qualified magnesium alloy is smelted, and subsequent treatment is facilitated by means of manners of surface pre-cleaning and the like.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a method for preparing a magnesium alloy new energy vehicle battery box. Background technique [0002] At present: At the end of the 20th century, the energy crisis is becoming more and more serious, and environmental protection regulations are becoming more and more stringent, so that the requirements for weight reduction and energy saving of modern automobiles continue to rise, and lightweight has become the main development direction of automobile material selection. Every 100 kilograms reduction in vehicle quality can reduce fuel consumption by 0.7 liters per 100 kilometers, and every 10% reduction in vehicle weight can increase fuel efficiency by 5.5%. Therefore, developed countries continue to strengthen restrictions on energy consumption and exhaust pollution of vehicles and other vehicles. Manufacturers attach great importance to the lightweig...

AI Technical Summary

Problems solved by technology

[0011] The battery boxes of existing electric vehicles generally adopt steel structure boxes, which are formed by sheet metal or stamping. The boxes are characterized by heavy weight, complicated processing technology, low corrosion resistance, and low energy density of the overall battery; The box is relatively light, but the comprehensive cost is high, and the impact resistance is weak, and there are certain problems in practical applications.

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