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Pressure-torsion die, pressure-torsion machining equipment and pressure-torsion machining method of difficult-to-deform metal materials

A technology for metal materials and processing equipment, applied in metal processing equipment, forging/pressing/hammering machinery, forming tools, etc., can solve the problems of difficult application of torsional motion, high cost, complicated maintenance, etc. The effect of cost reduction and microstructure stabilization

Inactive Publication Date: 2019-04-05
XIAMEN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese Invention Patent Application Publication CN103480789A discloses a high-strength aluminum alloy disc-shaped workpiece compression-torsion forming method. In order to obtain a difficult-to-deform metal material with fine grains and excellent microstructure, compression-torsion deformation processing has been experimentally prepared, but none Adopt special equipment with special torque output, which is expensive and complicated to maintain, especially the application of torsional motion is the difficulty of equipment transformation

Method used

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  • Pressure-torsion die, pressure-torsion machining equipment and pressure-torsion machining method of difficult-to-deform metal materials
  • Pressure-torsion die, pressure-torsion machining equipment and pressure-torsion machining method of difficult-to-deform metal materials
  • Pressure-torsion die, pressure-torsion machining equipment and pressure-torsion machining method of difficult-to-deform metal materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A 7075 aluminum alloy cylinder with a diameter of 100 mm and a height of 100 mm is selected as the initial material, and the molding die is figure 1 In the compression torsion die with the structure shown, the inclination angle between the driving surface and the driven surface is 45°, and the friction coefficient between the pushing surface and the driven surface is about 0.2. First place the aluminum alloy block in the torsion mold, and then fix the mold on a 500-ton hydraulic press. Start the hydraulic press, the upper pressing block of the hydraulic press goes down and pushes the upper die 1 down through the upper template 9 of the mold until the upper die 1 is in close contact with the aluminum alloy to be processed; at the same time, adjust the initial action position of the spring so that the upper die 1 is in contact with the material When contacting, the pushing surface and driven surface between the upper and lower dies 4 are also in close contact; the hydraul...

Embodiment 2

[0038] A pure molybdenum column with a diameter of 90mm and a height of 50mm is selected as the initial material, and the molding mold is figure 1 In the compression torsion die with the structure shown, the inclination angle between the driving surface and the driven surface is 63°, and the friction coefficient between the pushing surface and the driven surface is about 0.2. First place the pure molybdenum column in the torsion mold, and then fix the mold on the 315-ton hydraulic press. Start the hydraulic press, the upper pressing block of the hydraulic press goes down and pushes the upper die 1 down through the upper template 9 of the mold until the upper die 1 is close to the pure molybdenum column to be processed; at the same time, adjust the initial action position of the spring so that the upper die 1 and the When the material is in contact, the pushing part 3 and the driven part 6 are also in close contact; the hydraulic press continues to push the upper die 1 down by ...

Embodiment 3

[0040] A sintered TZM cylinder with a diameter of 80 mm and a height of 16 mm is selected as the initial material, and the molding die is figure 1 In the compression torsion die with the structure shown, the inclination angle between the driving surface and the driven surface is 70°, and the friction coefficient between the pushing surface and the driven surface is about 0.15. First place the TZM cylinder in the torsion mold, and then fix the mold on the 315-ton hydraulic press. Start the hydraulic press, the upper pressing block of the hydraulic press goes down and pushes the upper die 1 down through the upper template 9 of the mold until the upper die 1 is in close contact with the TZM cylinder to be processed; at the same time, adjust the initial action position of the spring so that the upper die 1 is in contact with the material When in contact, the pushing part 3 and the driven part 6 are also in close contact; the hydraulic press continues to push the upper die 1 down b...

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Abstract

The invention relates to a pressure-torsion die. The pressure-torsion die is provided with an upper pressing die and a lower pressing die. The upper pressing die can drive the lower pressing die to rotate when the upper pressuring die is close to the lower pressing die so that upsetting machining and pressure-torsion machining can be carried out on the cake-like difficult-to-deform metal materialsclamped between the upper pressuring die and the lower pressuring die. The invention further relates to pressure-torsion machining equipment using the pressure-torsion die and a machining method of the pressure-torsion for pressure-torsion machining the difficult-to-deform metal materials with the pressure-torsion machining equipment. The pressure-torsion die can be used for simultaneous composite loading of upsetting and torsion of the difficult-to-deform metal materials.

Description

technical field [0001] The present invention relates to a mold, in particular to a compression mold. [0002] The present invention also relates to the torsion processing equipment using the above torsion die, and the processing method of using the torsion processing equipment to perform the torsion processing of difficult-to-deform metal materials. Background technique [0003] The compression-torsion deformation process is a special plastic deformation process in which the deformed body produces axial compression and tangential shear deformation by applying a torque on its cross-section through active friction while applying pressure in the height direction of the deformed body. It is a kind of compound loading deformation process. The essence of deformation is that by applying a strong force field to the deformation body, the contact friction force between the deformation body and the mold and the internal shear deformation strength of the deformation body are effectively...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D11/14B21D37/10B21J5/08B21J13/02
CPCB21D11/14B21D37/10B21J5/08B21J13/02
Inventor 杨益航黄志民陈莹张凯星张厚安
Owner XIAMEN UNIV OF TECH
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