Aluminum alloy sheet treatment technology

An aluminum alloy sheet and processing technology technology, which is applied in the field of improving the comprehensive mechanical properties of 2219 aluminum alloy sheets, can solve the problems of thick and narrow grains, large fluctuations in mechanical properties, and low material utilization rate of the sheet, so as to promote full crushing and dissolution, Strength and ductility improvement, uniformity improvement effect

Active Publication Date: 2018-10-23
JIANGSU RIGID BUILDING MATERIALS TECH CO LTD
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  • Application Information

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Problems solved by technology

In the prior art, the production process of aluminum alloy plates is mostly casting-homogenizing annealing-hot rolling-cold rolling-heat treatment, and the improved production process is to add pre-deformation between rolling and heat treatment, or change the traditional heat treatment to Heat treatment processes such as T351, T651 or T851, however, the plates produced by these processes tend to form thick and narrow grains, and the mechanical properties fluctuate greatly, and cracks will lead to low material utilization or waste products

Method used

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  • Aluminum alloy sheet treatment technology
  • Aluminum alloy sheet treatment technology
  • Aluminum alloy sheet treatment technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: The scheme adopted in the forming and heat treatment process of a kind of 2219 aluminum alloy plate is as follows:

[0026] (1) Material preparation: The 2219 aluminum alloy square ingot cast by semi-continuous casting is sawed to the required weight and size according to the process requirements, and the end face of the billet is marked with a marker pen before forging to distinguish the three directions during forging;

[0027] (2) Soaking: Put the aluminum alloy ingot in step (1) into the furnace at room temperature, heat it to 530±5°C and keep it for 8 hours, then cool it down to 500±5°C after 2 hours, and keep it at this temperature for 6 hours. Homogenize the heat treatment and ensure the uniformity of the furnace temperature to obtain uniform heat raw materials;

[0028] (3) Multi-axis forging: Forging the soaked raw materials obtained in step (2), keeping the initial forging temperature at 460°C-500°C, and the final forging temperature ≥ 420°C, car...

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Abstract

The invention discloses an aluminum alloy sheet forming and heat treatment technology. The technology comprises the following steps of material preparing, homogenization heat treatment, multi-axis forging, machining, surface milling, heating, deforming at different temperature intervals, heat treatment, straightening, saw cutting and the like. Deforming at different temperature intervals comprisesthe steps of the first interval process, specifically, high temperature rolling is conducted on a heated forging stock; the second interval process, specifically, the forging stock is transferred toa hydraulic machine for medium-temperature hot compression deformation; the third interval process, specifically, medium-temperature rolling is conducted after compression deformation is completed; and the fourth interval process, specifically, cold finish rolling deformation is conducted when a sheet is cooled to room temperature, and then a rolled sheet is obtained.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy forming and heat treatment, in particular to a process method for improving the comprehensive mechanical properties of 2219 aluminum alloy plates. Background technique [0002] With the continuous development of high-tech fields such as aerospace, military industry and transportation, the requirements for the structure and performance of high-strength and light-weight 2219 aluminum alloy sheets are gradually increasing. Therefore, the production of high-quality aluminum alloys, especially the preparation of uniform and fine Alloyed aluminum alloy sheets become very necessary. Refining the grains can improve the strength and plasticity of the alloy at the same time, thereby improving the comprehensive mechanical properties of the alloy. In the prior art, the production process of aluminum alloy plates is mostly casting-homogenizing annealing-hot rolling-cold rolling-heat treatment, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02C22F1/04
CPCB21C37/02C22F1/002C22F1/04
Inventor 王健卢雅琳丛孟启李仁兴申来娣朱梦圆
Owner JIANGSU RIGID BUILDING MATERIALS TECH CO LTD
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