Strain-induced semi-solid forming process and die for magnalium mobile phone shells

A technology for semi-solid forming and mobile phone casings, applied in metal extrusion dies, etc., can solve the problems of short service life, poor wear resistance, corrosion resistance, high maintenance costs, etc., and achieve good surface quality, high material utilization, and production low cost effect

Inactive Publication Date: 2015-04-08
XI AN JIAOTONG UNIV
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Problems solved by technology

This method is suitable for mass production, high dimensional accuracy, stable quality, shortened production cycle, and improved productivity. However, during the forming process of the magnesium alloy

Method used

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  • Strain-induced semi-solid forming process and die for magnalium mobile phone shells
  • Strain-induced semi-solid forming process and die for magnalium mobile phone shells
  • Strain-induced semi-solid forming process and die for magnalium mobile phone shells

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[0034] The present invention will be described in detail below in conjunction with the drawings.

[0035] The strain-induced semi-solid forming process of magnesium-aluminum alloy mobile phone shell includes the following steps:

[0036] 1) Compression deformation: the prepared 5mm thick magnesium-aluminum alloy sheet is rolled on a rolling mill, squeezed on a press or high-speed forging to produce 20-40% compression deformation;

[0037] 2) Blanking: Cut the compression-deformed magnesium-aluminum alloy plate obtained in step 1) into a suitable size to meet the requirements of forming a mobile phone shell;

[0038] 3) Semi-solid insulation: Put the magnesium aluminum alloy plate obtained in step 2) into a resistance furnace or an intermediate frequency induction furnace for semi-solid insulation, where the insulation temperature is set within the semi-solid temperature range of the magnesium aluminum alloy, and the holding time is 5 ~30min to obtain a magnesium-aluminum alloy plate w...

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Abstract

Disclosed is a strain-induced semi-solid forming process and die for magnalium mobile phone shells. The process includes cutting a magnalium plate with certain compressive deformation into the suitable size, performing semi-solid heat preservation on the cut magnalium plate, and then putting the obtained magnalium plate with semi-solid characteristics into the preheated die for extrusion forming. The die comprises a mobile phone shell bottom cavity die device, the upper side of the mobile phone shell bottom cavity die device is connected with a mobile phone shell top terrace die device, die guide rods are assembled on the mobile phone shell top terrace die device, a left mobile phone shell core-pulling slider is connected to the left of the mobile phone shell bottom cavity die device, a right mobile phone shell core-pulling slider is connected to the right of the mobile phone shell bottom cavity die device, and mobile phone shell ejection mechanism is connected to the lower side of the same. The magnalium mobile phone shells with superior performance can be produced, and the process and the die have the advantages of simple process, high forming speed, low cost and the like.

Description

technical field [0001] The invention belongs to the technical field of communication products, and in particular relates to a strain-induced semi-solid forming process and a mold for a magnesium-aluminum alloy mobile phone casing. Background technique [0002] As a hand-held mobile communication terminal device with a high penetration rate, mobile phones have undergone several upgrades in just a few decades, becoming the epitome of technological progress. As the "skin" of the mobile phone, the mobile phone shell is the part that users directly contact. It is not only a powerful protective umbrella for the mobile phone, but also can effectively reduce the invasion of dust, reduce the damage caused by accidental drops, and enhance the service life of the mobile phone. The most important thing is to improve the user's product experience. Therefore, the materials for making mobile phone shells are required to have the characteristics of high strength, good heat resistance and t...

Claims

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Application Information

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IPC IPC(8): B23P15/00B21C23/02B21C25/02
CPCB21C23/02B21C25/02
Inventor 赵升吨王永飞张晨阳韩晓兰赵永强
Owner XI AN JIAOTONG UNIV
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