6008 aluminum alloy energy absorption box processing technology for automobile

Abstract

The invention belongs to the technical field of aluminum alloys, and relates to a 6008 aluminum alloy energy absorption box processing technology for an automobile. The 6008 aluminum alloy energy absorption box processing technology comprises, by weight, 0.50-0.9% of Si, less than or equal to 0.35% of Fe, less than or equal to 0.30% of Cu, less than or equal to 0,30% of Mn, 0.40-0.7% of Mg, less than or equal to 0.30% of Cr, less than or equal to 0.20% of Zn, less than or equal to 0.10% of Ti, 0.05-0.20% of V, less than or equal to 0.05% of single impurity, less than or equal to 0.15% of totalimpurities, and the balance A1. The heating temperature of a mold is 450-500 DEG C in the extrusion process, the heating temperature of an extrusion barrel is 400-450 DEG C, the heating temperature of a cast ingot is 510-530 DEG C, the extrusion speed is 5-7m / min, the temperature of an aluminum alloy ingot before quenching is larger than or equal to 520 DEG C, and when cooling is carried out at the temperature from 520 DEG C to 250 DEG C, the cooling speed is larger than or equal to 80 DEG C / S, and the temperature after quenching is less than 60 DEG C. According to the6008 aluminum alloy energy absorption box processing technology, the existing extrusion control parameters are adjusted, the temperature before quenching is raised, and the cooling rate is increased, the product meets the requirements of high precision, high strength and excellent collapse deformation, and the actual verification shows that the final effect of the product meets various standards.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and relates to a processing technology of a 6008 aluminum alloy energy-absorbing box for automobiles. Background technique [0002] With the rapid development of science and technology and the continuous improvement of people's lives, more and more various vehicles have entered thousands of households as transportation and means of transportation. Improving the safety of vehicles in collisions and the economy of vehicle manufacturing has become an important aspect of automotive research and development. important topic. Automobile bumper is an important part to maximize the safety of occupants in the event of a car collision. Its main structure includes a beam and an energy-absorbing box connecting the beam and the mounting plate of the car body. The energy-absorbing box is a component that uses its compression deformation to fully absorb the collision kinetic energy and reduce the maxim...

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Problems solved by technology

[0004] In view of this, in order to solve the problem that the existing general extrusion control parameters cannot meet the requirements of high precision, high strength and excellent collapse and deformation of automobile bumper crash boxes, the present invention provides a process for processing 6008 aluminum alloy crash boxes for automobiles. craft

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