Method for improving soaking treatment indentation defect of high-quality aluminum alloy round ingot

Abstract

The invention relates to the technical field of aluminum alloy heat treatment, in particular to a method for improving a soaking treatment indentation defect of a high-quality aluminum alloy round ingot. The method for improving the soaking treatment indentation defect of the high-quality aluminum alloy round ingot specifically comprises the following steps that S1, the aluminum alloy round ingotis placed on an aluminum alloy plate with the thickness more than 5mm; S2, preheating is carried out on the aluminum alloy round ingot, the preheating temperature ranges from 475 DEG C to 525 DEG C, the preheating time ranges from 4 h to 7 h; and S3, homogenization treatment is carried out on the aluminum alloy round ingot, the homogenization temperature ranges from 550 DEG C to 600 DEG C, and thehomogenization time ranges from 3 h to 10 h. According to the method for improving the soaking treatment indentation defect of the high-quality aluminum alloy round ingot, the surface indentation defect of the round ingot is eliminated, the mechanical property of the round ingot is improved, and the quality of an aluminum alloy product is improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy heat treatment, in particular to a method for improving indentation defects of high-quality aluminum alloy round ingot soaking heat treatment. Background technique [0002] Aluminum alloy has the characteristics of light weight, good formability, high strength, corrosion resistance, and recyclability. It has been widely used in architectural decoration, machinery, IT electronics and other fields. With the development of modern industry and technology, aluminum alloy products are widely used in aerospace The application in fields such as , ships, rail transit, and automobile lightweight is expanding year by year, which puts forward higher requirements for the comprehensive quality of aluminum alloy materials. [0003] Aluminum alloy products are processed from billets by plastic processing methods, such as extrusion, rolling, forging, etc. Among them, billets commonly used for extrusion are ...

AI Technical Summary

Problems solved by technology

Due to the thermal expansion of the aluminum alloy round ingot and the rack under the high temperature in the soaking furnace, the friction coefficient between aluminum and steel is different, which makes the relative movement of the contact between the round ingot and the soaking rack, resulting in deformation, resulting in round The indentation defects of pits appear at the contact position between the ingot and the soaking rack, especially the high-quality low-strength alloy ingots have low hardness, and the plastic deformation is particularly obvious. Aluminum alloy round bars with such defects are extruded , not only will cause damage to the extrusion cylinder and extrusion die of the extrusion equipment, but also easily form quality defects such as oxidation inclusions and pores in the extrusion products, causing huge losses to the manufacture of precision high-quality aluminum alloy extrusions