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Production process for improving comprehensive performance of aluminum alloy plate

An aluminum alloy sheet, comprehensive performance technology, applied in the field of aluminum alloy forming and heat treatment, can solve the problems of unmentioned material properties, reduced production efficiency, huge heating energy consumption, etc., to avoid the decline of grain refinement and eliminate residual Stress, the effect of shortening the cycle

Active Publication Date: 2021-09-07
JIANGSU RIGID BUILDING MATERIALS TECH CO LTD
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Problems solved by technology

[0006] 1) The time and temperature assisted by electric pulses are consistent with the conventional heat treatment time, which takes a long time, which not only reduces the production efficiency, but also causes huge heating energy consumption
[0007] 2) The existing technology can only improve the material properties in one direction, and there is no mention of improving the material properties in two directions at the same time

Method used

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  • Production process for improving comprehensive performance of aluminum alloy plate

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Embodiment 1

[0035] Such as figure 1 As shown, the scheme adopted in the production process of improving the comprehensive performance of aluminum alloy plate of the present invention is as follows:

[0036](1) Material preparation: saw the H112 state (hot-processed state) aluminum alloy square blank according to the process size requirements and cut it into a blank of 600 (± 5mm) × 600 (± 5mm) × 1000 (± 5mm), and use a marker pen on it before forging Marking on the end face of the billet to distinguish the three directions during forging and pre-stretching to obtain raw materials;

[0037] (2) Homogenization treatment: put the raw material obtained in step (1) into a furnace at room temperature, raise the temperature to 545±5°C according to the power and keep it warm for 6 hours, then raise the temperature to 580±5°C at a heating rate of 60°C / h and keep it warm for 0.5 hours, and then pass Cool to 480°C with the furnace for 3 hours, then hold for 0.5 hours, and ensure the uniformity of t...

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Abstract

The invention discloses a production process for improving the comprehensive performance of an aluminum alloy plate. The production process comprises the following technological processes of material preparation, homogenization treatment, multi-axis free forging, recrystallization annealing, saw cutting and face milling, room temperature cold rolling, electric pulse treatment, pre-stretching and artificial aging. The production process is convenient to operate, crushing and dissolving of a coarse residual phase and uniform refining of the grain size are effectively promoted by carrying out large plastic deformation multi-axis free forging cogging and recrystallization annealing on a square ingot subjected to grading homogenization treatment, and the anisotropy of the formed plate is obviously reduced. Then room-temperature cold rolling and pre-stretching treatment are conducted on the formed alloy plate, and more defects such as dislocation and vacancy are introduced into an alloy structure; and secondly, electric pulse treatment and artificial aging processes are introduced, so that rapid, sufficient and uniform precipitation of a precipitated phase in the aging process of the alloy can be effectively promoted, it is guaranteed that the alloy obtains higher strength and hardness after heat treatment, and rapid recovery and recrystallization at the grain boundary of the alloy are promoted.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy forming and heat treatment, in particular to a production process for improving the comprehensive performance of aluminum alloy plates. Background technique [0002] Compared with other metal materials, aluminum alloy has the advantages of low density, specific strength, specific stiffness, high specific modulus, good thermal conductivity, corrosion resistance, plastic processing performance and impact resistance, and the aluminum alloy material can be recycled and reused. , can reduce damage to the environment and waste of resources, and is widely used in aviation, aerospace, ships, transportation and other fields. The existing aluminum alloy warm and hot forming production process can improve the formability of the material during the forming process, but there are still some problems, such as slow heat transfer speed, fast dissipation, and high energy consumption; the surface oxide layer...

Claims

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Application Information

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IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 杨宝金王健王军丁先先
Owner JIANGSU RIGID BUILDING MATERIALS TECH CO LTD
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