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

A technology of soaking heat treatment and aluminum alloy, which is applied in the field of aluminum alloy heat treatment, and can solve problems such as manufacturing loss of precision and high-quality aluminum alloy extrusion materials, extrusion equipment extrusion cylinders, extrusion die damage, and oxidation inclusions in extrusion products. Achieve the effects of avoiding soaking heat damage, ensuring strength and stress-deformation resistance, and eliminating internal stress

Active Publication Date: 2020-10-16
FUJIAN NANPING ALUMINUM
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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-

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Embodiment 1

[0026] Embodiment 1 of the present invention is: a method for improving indentation defects in soaking treatment of high-quality aluminum alloy round ingots, which specifically includes the following steps:

[0027] S1: Place the aluminum alloy round ingot on an aluminum alloy plate with a thickness greater than 5mm; fix the aluminum alloy plate horizontally on the work frame through bolts;

[0028] S2: Preheating the aluminum alloy round ingot, the preheating temperature is 475°C, and the preheating time is 4h;

[0029] S3: Perform homogenization treatment on the aluminum alloy round ingot, the homogenization temperature is 550° C., and the homogenization time is 3 hours.

[0030] The difference between the second embodiment of the present invention and the first embodiment is that: the preheating temperature is 500°C, the preheating time is 5 hours; the homogenization temperature is 575°C, and the homogenization time is 5 hours.

[0031] The difference between Embodiment 3 ...

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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 ...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 周策路宝坤郭昆闵爱武吴洪胜余国栋李广华
Owner FUJIAN NANPING ALUMINUM
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