Production process of high-strength 6-series aluminum alloy profiles

Abstract

The invention belongs to the field of aluminum alloy production processes, and relates to a production process of high-strength 6-series aluminum alloy profiles. The production process includes the following steps that aluminum alloys are batched according to a certain mass percentage; the prepared aluminum alloy raw material is placed in a smelting furnace to be smelted into a liquid aluminum alloy, the liquid aluminum alloy is melted and cast into aluminum alloy ingots; the aluminum alloy ingots are heated to 565 DEG C, the temperature is kept for 8h, and then the aluminum alloy ingots are subjected to air cooling to a room temperature; the aluminum alloy ingots are preheated to 515 DEG C, an extrusion container is heated, the temperature is raised to 450+/-10 DEG C, and then extrusion is carried out to obtain the aluminum alloy profiles; the extruded aluminum alloy profiles are subjected to solution treatment, a solution treatment temperature is 565 DEG C, the temperature is kept for 55 min, and the aluminum alloy profiles after the solution treatment are quenched with quenching liquid; the quenched aluminum alloy profiles are cold-treated; and the cold-treated aluminum alloy profiles are subjected to aging treatment. According to the production process of the high-strength 6-series aluminum alloy profiles, the alloy compositions of the aluminum alloys are improved and a heat treatment process is optimized through improvement of the process so that the production process of the high-strength 6-series aluminum alloy profiles can adapt to the use requirements of aluminum alloy motor shells.

Description

technical field [0001] The invention belongs to the field of aluminum alloy production technology, and relates to a high-strength 6-series aluminum alloy profile production technology. Background technique [0002] The so-called aluminum alloy is to add an appropriate amount of other elements to industrial pure aluminum to improve the nature of aluminum to meet various needs in industry and life. Due to the small specific gravity, high specific strength and good comprehensive performance of aluminum alloy, it is widely used in aviation industry, automobile manufacturing industry, power instrument, tool and civil utensil manufacturing, etc. [0003] With the development of national defense and civilian industries, higher requirements are put forward for the comprehensive performance of aluminum alloys, and there are certain requirements for the strength, hardness and plasticity of aluminum alloys. The motor casings in existing production are generally made of aluminum alloys....

AI Technical Summary

Problems solved by technology

[0003] With the development of national defense and civilian industries, higher requirements are put forward for the comprehensive performance of aluminum alloys, and there are certain requirements for the strength, hardness and plasticity of aluminum alloys. The motor casings in existing production are generally made of aluminum alloys. 6 series, but the strength of the current motor casing is low after testing and cannot meet the needs of use, so it is necessary to improve its production process