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Aluminum and aluminum alloy annealing process

An annealing process and alloy technology, applied in the field of aluminum and aluminum alloy annealing process, can solve problems such as inaccurate temperature design, failure to meet product status and performance requirements, etc., to shorten annealing time, eliminate compressive stress, and reduce heat drum Effect

Inactive Publication Date: 2017-08-15
HEFEI TAITONG REFRIGERATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, due to the inaccurate temperature design, the state and performance requirements of the product cannot be met during the annealing process of aluminum and aluminum alloys.

Method used

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Examples

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Embodiment Construction

[0008] An annealing process for aluminum and aluminum alloys, including three stages of temperature rise, heat preservation and temperature drop. In the temperature rise stage, the temperature rise rate is 3°C-8°C / hour. In the heat preservation stage, the heat preservation temperature is 160°C-200°C, and the heat preservation time is From 55 hours to 145 hours, in the cooling stage, the cooling rate is 0.2°C-10°C / hour.

[0009] An annealing process for aluminum and road alloys in the present invention adjusts the holding temperature and holding time by controlling the heating rate, eliminates compressive stress, thereby reducing the probability of causing heat drums, and shortens the annealing time on the premise of reducing heat drums, thereby ensuring the tensile strength of aluminum.

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Abstract

The invention relates to the technical field of annealing processes, in particular to an aluminum and aluminum alloy annealing process. Three stages including temperature rise, heat preservation and cooling are included; in the temperature rise stage, the temperature rise rate is 3 DEG C-8 DEG C per hour; in the heat preservation stage, the heat preservation temperature is 160 DEG C-200 DEG C, and the heat preservation time is 55 hours to 145 hours; and in the cooling stage, the cooling rate is 0.2 DEG C-10 DEG C per hour. By means of the aluminum and aluminum alloy annealing process, the heat preservation temperature and the heat preservation time are adjusted by controlling the temperature rise rate, the pressure stress is eliminated, the hot swelling rate is reduced, the annealing time is shortened on the premise that the hot swelling is reduced, and therefore the aluminum extension strength is guaranteed.

Description

technical field [0001] The technical field of the annealing process of the present invention specifically belongs to an annealing process for aluminum and aluminum alloys. Background technique [0002] Aluminum alloy annealing is divided into strip annealing and foil annealing. The purpose of annealing: to eliminate cold work hardening in order to continue rolling or deep processing; to control the state and performance of the product; to remove rolling oil and improve surface quality. Aluminum annealing furnace is the most widely used equipment in aluminum alloy heat treatment. With the development of technology and the improvement of product quality requirements, higher requirements are put forward for the annealing of aluminum materials, such as the appearance quality and consistency of performance indicators of annealed products. Appearance quality includes peeling, bubbles, oil spots, oxidation corrosion, surface finish, etc. Intrinsic quality includes mechanical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
CPCC22F1/04
Inventor 时乾中李恕东肖翔陈要国
Owner HEFEI TAITONG REFRIGERATION TECH CO LTD
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