Thermal processing method for improving aluminum alloy stamping forming

A stamping forming and thermal processing technology, which is applied in the field of improving the thermal processing of aluminum alloy stamping forming, can solve the problems of high technical requirements for cold forming, high cost of material improvement, poor versatility, etc., achieve broad industrial application prospects, control scrap rate, Effect of improving formability

Active Publication Date: 2012-07-11
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a thermal processing method for improving stamping forming of aluminum alloys. By increasing the heat treatment process, the stamping forming of aluminum alloy profile

Method used

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  • Thermal processing method for improving aluminum alloy stamping forming
  • Thermal processing method for improving aluminum alloy stamping forming

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Taking the common forged aluminum plug housing as an example, the grade selected for the forged aluminum profile is LD2. Before the improvement, the main processing technology includes: after the forged aluminum profile is passed through a lathe and a milling machine, it is stamped and formed, and then it is inspected and fitter. , The finished product is obtained after electroplating. During the inspection process, the qualified rate of stamping forming is 78% (calculated by processing 1000 aluminum alloy workpieces).

[0020] Before the above press forming, a heat treatment process is added, and the above forged aluminum profiles are treated at 280 ° C for 8 minutes, and then the forged aluminum profiles are transferred to 10 ° C water for 3 s to 4 s. After cooling, stamping is completed within 3 h to 6 h. , In the inspection process, the qualified rate of stamping forming is 88% (calculated by processing 1000 aluminum alloy workpieces), and the unq...

Example Embodiment

[0021] Example 2

[0022] Taking the common forged aluminum plug housing as an example, the grade selected for the forged aluminum profile is LD2. Before the improvement, the main processing technology includes: after the forged aluminum profile is passed through a lathe and a milling machine, it is stamped and formed, and then it is inspected and fitter. , The finished product is obtained after electroplating. During the inspection process, the qualified rate of stamping forming is 78% (calculated by processing 1000 aluminum alloy workpieces).

[0023] Before the above-mentioned stamping and forming, a heat treatment process was added, and the above-mentioned forged aluminum profiles were put into a quenching furnace at 150 °C, the temperature was raised to 280 °C at a heating rate of 5 °C / min, and treated at 280 °C for 8min, and then 3s Transfer the forged aluminum profile to 10 ℃ water for ~4s, and complete the stamping within 3h to 6h after cooling. During the inspection p...

Example Embodiment

[0024] Example 3

[0025] Taking the common forged aluminum plug housing as an example, the grade selected for the forged aluminum profile is LD2. Before the improvement, the main processing technology includes: after the forged aluminum profile is passed through a lathe and a milling machine, it is stamped and formed, and then it is inspected and fitter. , The finished product is obtained after electroplating. During the inspection process, the qualified rate of stamping forming is 78% (calculated by processing 1000 aluminum alloy workpieces).

[0026]Before the above-mentioned stamping and forming, a heat treatment process was added, and the above-mentioned forged aluminum profiles were put into a quenching furnace at 150 °C, the temperature was raised to 330 °C at a heating rate of 5 °C / min, and treated at 330 °C for 1min, and then 3s Transfer the forged aluminum profile to 10 ℃ water for ~4s, and complete the stamping within 3h to 6h after cooling. During the inspection pr...

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Abstract

The invention discloses a thermal processing method for improving aluminum alloy stamping forming. The method comprises the following steps of: before stamping forming, treating an aluminum section at the temperature of 230-330 DEG C for 1-20 minutes; transferring the aluminum section into water of 0-50 DEG C within 20 sections; cooling; and completing stamping forming within 8 hours. According to the method, the stamping forming of an aluminum alloy workpiece is improved, and the technical problems of high technical requirement, difficulty in controlling, high cost, high material improving cost and poor popularity are solved. In the method, a thermal treatment process is added before stamping forming, so that the forming performance of the aluminum alloy section is improved. The method disclosed by the invention has a simple principle, wide popularity and low energy consumption, and is easy to operate; the rejection rate of the aluminum alloy section during stamping forming can be effectively controlled, and the yield of the stamping forming of the aluminum alloy section is greatly increased.

Description

technical field [0001] The invention relates to the field of heat treatment of aluminum alloys, in particular to a thermal processing method for improving stamping and forming of aluminum alloys. Background technique [0002] In order to meet the lightweight requirements of automobiles, meet the requirements of energy saving, environmental protection, safety and reliability, various lightweight materials have been developed rapidly. Compared with steel sheets for automobiles, aluminum alloy sheets have the advantages of low density, high strength, and corrosion resistance, which can meet the special requirements of automobile lightweight, and have become the main material for replacing steel sheets in automobile lightweight technology. At present, there are already aluminum engine bodies, aluminum cylinder heads, aluminum intake manifolds, aluminum brake drums, and even aluminum skin body and aluminum frame in the automotive industry. The general development trend is to conv...

Claims

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Application Information

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IPC IPC(8): C22F1/04C21D8/00B21D22/00
Inventor 郭秋彦刘光裕李莉刘强杨安志赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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