Hot press-forging formation mould for magnesium alloy thin shells

A technology for forming molds and magnesium alloys, which is applied to household appliances, manufacturing tools, and other household appliances, etc., to achieve the effect of simplifying the surface treatment process, high mechanical properties, and good surface quality

Inactive Publication Date: 2008-06-04
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a hot stamping and forging forming method of magnesium alloy thin shell parts and its special mold, which can solve the forming problem of complex geometric shapes, and can obtain magnesium alloy thin shell parts with high material utilization rate and good surface quality

Method used

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  • Hot press-forging formation mould for magnesium alloy thin shells
  • Hot press-forging formation mould for magnesium alloy thin shells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The hot stamping and forging forming method of magnesium alloy thin shell parts, the specific process steps are as follows:

[0041] (1) Heat the mold to 200°C;

[0042] (2) Heat the plate with a thickness of 1.5mm to 250°C;

[0043] (3) Evenly smear the blank with lubricant liquid polytetrafluoroethylene;

[0044] (4) Put the blank into the die, and the punch moves downward at a speed of 500mm / s to forge a shell-shaped piece. According to the size and shape of the formed parts, the force applied to the punch is controlled at 5 ton / cm 2 ~15ton / cm 2 .

Embodiment 2

[0046] The hot stamping and forging forming method of magnesium alloy thin shell parts, the specific process steps are as follows:

[0047] (1) Heat the mold to 300°C;

[0048] (2) Heat the plate with a thickness of 3mm to 350°C;

[0049] (3) Spread the lubricant molybdenum disulfide evenly on the billet;

[0050] (4) Put the blank into the die, and the punch moves downward at a speed of 100mm / s to forge a shell-shaped piece. According to the size and shape of the formed parts, the force applied to the punch is controlled at 5 ton / cm 2 ~15ton / cm 2 .

Embodiment 3

[0052] The hot stamping and forging forming method of magnesium alloy thin shell parts, the specific process steps are as follows:

[0053] (1) Heat the mold to 400°C;

[0054] (2) Heat the plate with a thickness of 6mm to 450°C;

[0055] (3) Spread the lubricant graphite evenly on the billet;

[0056] (4) Put the blank into the die, and the punch moves downward at a speed of 10 mm / s to forge a shell-shaped piece. According to the size and shape of the formed parts, the force applied to the punch is controlled at 5 ton / cm 2 ~15ton / cm 2 .

[0057] After punching and forging is finished, the formed part is taken out from the mold, and after cooling, edge trimming is performed to remove excess edges. Then machining, including drilling, cutting and so on. Finally, surface treatment and spraying are carried out to complete the manufacture of finished products.

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Abstract

A thermal impact forging method for forming the thin Mg-alloy casing used by MP3 reproducer, mobile telephone, PDA, digital camera, etc includes such steps as providing Mg-alloy blank (1.5-6 mm in thickness), heating die set to 200-400 deg.C, heating blank to 250-450 deg.C, coating lubricant on said blank, putting the blank in female die, and moving the male die downward for compact forging. Its dedicated die set is also disclosed.

Description

technical field [0001] The invention relates to the production technology of magnesium alloy plastic processing, in particular to a method for hot stamping and forging of magnesium alloy thin shell parts with relatively complex geometric shapes (such as screw columns, reinforcing ribs, etc.) and a special mold thereof. Background technique [0002] In recent years, 3C products such as computers, communication products, and consumer electronics have become popular, and such items often require portability. At present, most of the structural materials of portable products are still mainly engineering plastics. Although their performance can usually meet the structural requirements of portable products (such as: strong enough, light weight, low cost, easy to manufacture, easy to cooperate with peripheral manufacturers, etc.), but with With the continuous development of social needs, various plastic materials have gradually failed to meet the requirements in terms of structural ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K21/04B21J1/06B21J3/00B21J13/02
Inventor 李章刚张士宏徐永超王忠堂郑文涛任丽梅
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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