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Hot stamping forming method of lightweight aluminum alloy vehicle body component

A hot stamping and aluminum alloy technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of no simplified forming process, limited improvement of production efficiency, long holding time, etc., and achieve labor costs and production equipment. The effect of cost reduction, saving processing time, and short holding time

Pending Publication Date: 2018-08-10
WUHAN UNIV OF TECH
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  • Summary
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Problems solved by technology

Although this method improves the heating efficiency of the aluminum alloy billet, the heat preservation time of the heat treatment in the related process is still long, and the forming process is not simplified, and the improvement of the production efficiency is also very limited.

Method used

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  • Hot stamping forming method of lightweight aluminum alloy vehicle body component
  • Hot stamping forming method of lightweight aluminum alloy vehicle body component
  • Hot stamping forming method of lightweight aluminum alloy vehicle body component

Examples

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Embodiment 1

[0028] Now, a 7075 aluminum alloy plate is taken as an example to describe the embodiment of the present invention in detail. According to the national standard GB / T228.1-2010 "Metallic Materials Tensile Test Part One: Room Temperature Test Method", the aluminum alloy sheet blank was subjected to a tensile test, and its tensile strength was measured to be 565MPa.

[0029] According to the traditional hot stamping method, it is generally heated to the required forming temperature for thermoforming. After the thermoforming is completed, solid solution + artificial aging treatment is carried out, that is, heating to 460-499°C for 30-40 minutes, and heating to 115°C after quenching. ~125°C for 24 hours to obtain parts whose strength meets the requirements of use; according to the integrated thermoforming-quenching process, the billet needs to be solid solution treated first, that is, heated to 460-499°C for 30-40 minutes, and then the temperature Reduce to the required forming tem...

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Abstract

The invention provides a hot stamping forming method of a lightweight aluminum alloy vehicle body component. An original T6-state aluminum alloy board blank is placed in a heating device, the temperature rises to be within the temperature range of 50 to 300 DEG C below the solid solution temperature, heating heat preservation is carried out for 1 to 5 minutes, then, the blank is rapidly transferred to a stamping mold to be subject to hot stamping forming and mold inner pressure maintaining quenching, and a formed part is obtained. The adopted blank is T6-state aluminum alloy, the subsequent solution aging heat treatment strengthening adopted in the traditional stamping process is not needed, the hot forming production period is shortened, production efficiency is greatly improved, and product use performance can be ensured.

Description

technical field [0001] The invention belongs to the technical field of sheet metal forming processing, and in particular relates to a hot stamping forming method of lightweight aluminum alloy body components. Background technique [0002] my country's automobile production and sales have been ranked first in the world for many years in a row. The huge number of automobiles has brought enormous pressure to the energy environment. Energy conservation and emission reduction have become an inevitable requirement for the development of the automobile industry. Lightweight, as an important means of energy saving and emission reduction, has received more and more attention. According to statistics, every 10% reduction in vehicle weight can increase fuel efficiency by 6-8% and reduce emissions by 4%. As one of the important lightweight materials, aluminum alloy has become the second largest automotive material after steel. At present, there are mainly two forming methods for alumin...

Claims

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Application Information

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IPC IPC(8): B21D22/02B21D37/16
CPCB21D22/022
Inventor 华林张文沛胡志力李欢欢
Owner WUHAN UNIV OF TECH
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