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Aluminum alloy heat treatment process

An aluminum alloy and aluminum alloy profile technology, applied in the field of aluminum profile processing, can solve problems such as unqualified mechanical properties, improper process control, performance deviation, etc., and achieve the effects of simple heat treatment methods, simple operation procedures, and improved damage resistance.

Active Publication Date: 2017-05-31
ANHUI LANT ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since aluminum alloys are sensitive to heat treatment temperature changes, adjusting the solid solution and aging temperatures will have a greater impact on mechanical properties. For products with stricter requirements, slightly improper process control may lead to performance deviations, resulting in unqualified mechanical properties, resulting in product rework , Aluminum alloy products have strict requirements on the number of reworks, and heat treatment cannot be repeated more than 2 times, so the unqualified products after multiple heat treatments can only be scrapped, causing great losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An aluminum alloy heat treatment process, comprising the following steps:

[0026] (1) Quenching

[0027] After the aluminum alloy profile products are extruded out of the outlet, all the quenching fans are started immediately to forcibly cool them. The cooling speed is that the temperature of the profile when passing through the tail fan in the air-cooling area is less than or equal to 200°C (if equipped with a tractor, the tractor should be started in time), and the operation of the fan should be checked frequently, and the maintenance personnel should be notified immediately if any problem is found. Cold quenching effect, the profile outlet temperature is controlled at 520°C;

[0028] (2) Artificial aging

[0029] Heat the quenched aluminum alloy profile to 190°C in the aging furnace, and then keep it warm for 2 hours. During the process, record the temperature every 30 minutes and check whether the instrument is normal, so as to prevent the aging from running out ...

Embodiment 2

[0040] An aluminum alloy heat treatment process, comprising the following steps:

[0041] (1) Quenching

[0042] After the aluminum alloy profile products are extruded out of the outlet, all the quenching fans are started immediately to forcibly cool them. The cooling speed is that the temperature of the profile when passing through the tail fan in the air-cooling area is less than or equal to 200°C (if equipped with a tractor, the tractor should be started in time), and the operation of the fan should be checked frequently, and the maintenance personnel should be notified immediately if any problem is found. Cold quenching effect, the profile outlet temperature is controlled at 550°C;

[0043] (2) Artificial aging

[0044] Heat the quenched aluminum alloy profile to 200°C in the aging furnace, and then keep it warm for 2 hours. During this process, record the temperature every 30 minutes and check whether the instrument is normal, so as to prevent the aging from running out...

Embodiment 3

[0055] An aluminum alloy heat treatment process, comprising the following steps:

[0056] (1) Quenching

[0057] After the aluminum alloy profile products are extruded out of the outlet, all the quenching fans are started immediately to forcibly cool them. The cooling speed is that the temperature of the profile when passing through the tail fan in the air-cooling area is less than or equal to 200°C (if equipped with a tractor, the tractor should be started in time), and the operation of the fan should be checked frequently, and the maintenance personnel should be notified immediately if any problem is found. Cold quenching effect, the profile outlet temperature is controlled at 535°C;

[0058] (2) Artificial aging

[0059] Heat the quenched aluminum alloy profile to 195°C in the aging furnace, and then keep it warm for 2 hours. During this process, record the temperature every 30 minutes and check whether the instrument is normal, so as to prevent the aging from running out...

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PUM

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Abstract

The invention discloses an aluminum alloy heat treatment process. The aluminum alloy heat treatment process comprises the following steps that (1) quenching is conducted, specifically, after aluminum alloy sectional material products are extruded from an outlet, all quenching fans are immediately started to conduct cooling, and the temperature of the sectional material outlet is controlled between 520 DEG C and 550 DEG C; (2) artificial aging is conducted, specifically, the quenched aluminum alloy sectional materials are heated in an aging furnace to 190 DEG C-200 DEG C, and then heat preservation is conducted for 2 hours; (3) inspection is conducted, specifically, the aluminum alloy sectional materials obtained after artificial aging are inspected; (4) second-time aging is conducted, specifically, the unqualified products obtained after first-time aging are subjected to second-time aging, the temperature of second-time aging is 160 DEG C- 170 DEG C, and heat preservation is conducted for 10 hours; (5) the unqualified products obtained after second-time aging are heated to the temperature of 250 DEG C-300 DEG C, heat preservation is conducted for 3-5 min, and the temperature of the unqualified products is quickly decreased to the room temperature; and (6) double-stage aging is conducted. According to the aluminum alloy heat treatment method provided by the invention, the comprehensive mechanical property of aluminum alloy is improved, the operation procedure is simple, meanwhile, multiple heat treatment reworking of the unqualified products is realized, and loss is reduced.

Description

technical field [0001] The invention relates to the field of aluminum profile processing, in particular to an aluminum alloy heat treatment process. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc, manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. Since aluminum alloy is sensitive to changes in heat treatment temperature, adjusting the solid solution and aging temperature will have a great impact on the mechanical properties. For products with stricter requirements, if the process control is slightly improper, it may lead to performance deviations, unqualified mechanical properties, and product rework. , Alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
CPCC22F1/002C22F1/04
Inventor 雷忠平
Owner ANHUI LANT ALUMINUM
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