Pressure control method for forming aluminum alloy covering part viscoelastic-plastic soft mode

Abstract

The invention discloses a pressure control method for forming an aluminum alloy covering part viscoelastic-plastic soft mode, relating to the pressure control method for forming an aluminum alloy covering part soft mode. The invention solves the problems of local tinning and cracking, larger rebound, bad surface quality and higher manufacture cost which are existed in the prior aluminum alloy covering part. The invention substantially comprises the following steps of: shaping a mould; installing a piston and an overflow valve; filling viscoelastic-plastic materials; matching a mould; adjusting the overflow valve to control the pressure value of the deformed region of the aluminum alloy plate blank material; tightly gluing the aluminum alloy plate blank material with the die cavity of a cavity die under the thrusting function of the viscoelastic-plastic materials to form the needed aluminum alloy covering part; opening the mould; taking out the formed aluminum alloy covering part; and removing the viscoelastic-plastic materials remained on the surface of the aluminum alloy covering part. The invention inhibits the rebound of the formed aluminum alloy covering part, prevents the local region from being cracked, improves the surface quality of the aluminum alloy covering part, and reduces the manufacture cost of the aluminum alloy covering part.

Description

A pressure control method for viscoelastic-plastic soft mold forming of aluminum alloy covering parts technical field The invention relates to a pressure control method for soft mold forming of an aluminum alloy covering part, and belongs to the technical field of plate forming. Background technique Aluminum alloy sheet is one of the materials used in the automotive industry. In order to reduce the weight of the automobile body and improve the performance and safety performance of the automobile, aluminum alloy materials are gradually used for automobile body parts, especially for automobile body panels. The dimensional accuracy and wall thickness distribution of the parts have an important influence on its performance, so higher requirements are put forward for the forming technology. When the traditional rigid die forming method is used to manufacture the aluminum alloy cover, it is easy to produce serious local thinning and cracking, and the formed cover has a large spr...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problems of local thinning and cracking, large rebound, poor surface quality and high manufacturing cost in the forming of existing aluminum alloy covering parts, and to provide a viscoelastic-plastic aluminum alloy covering part. Pressure Control Method for Soft Mold Forming

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