A method for improving the indentation defects of high-quality aluminum alloy round ingot soaking heat treatment

Abstract

The present invention relates to the technical field of heat treatment of aluminum alloys, and in particular to a method for improving indentation defects in soaking heat treatment of high-quality aluminum alloy round ingots, which specifically includes the following steps: S1: placing aluminum alloy round ingots on an aluminum Alloy plate; S2: Preheat the aluminum alloy round ingot, the preheating temperature range is 475-525°C, and the preheating time is 4-7h; S3: Homogenize the aluminum alloy round ingot, the homogenization temperature The range is 550~600℃, and the homogenization time is 3~10h. The method for improving the indentation defect of the high-quality aluminum alloy round ingot soaking treatment provided by the invention eliminates the indentation defect on the surface of the round ingot, improves the mechanical properties of the round ingot, and improves the quality of aluminum alloy products.

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