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Method and die for preparing magnesium alloy board with multistage continuous corner cutting deformation

A shear deformation, magnesium alloy technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the limitation of the preparation of high-performance deformed magnesium alloy sheets, the low efficiency of high-performance deformed magnesium alloy sheets, and the difficulty in achieving grain size. Refinement of mutual coordination and other issues, to achieve excellent comprehensive mechanical properties, avoid equivalent strain reduction, and improve the effect of microstructure and grain orientation

Inactive Publication Date: 2013-04-17
CHONGQING UNIV OF TECH
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Problems solved by technology

Third, it is difficult to achieve the mutual coordination of grain refinement and texture control with traditional processing techniques
However, there are some defects in the preparation of high-performance wrought magnesium alloy sheets by ECAR process: ① After ECAR, the microstructure of the sheet is not significantly refined, but with the increase of rolling passes, the grains are coarsened instead
③The efficiency of preparing high-performance wrought magnesium alloy sheet is low
In summary, these shortcomings of the traditional ECAR process limit the preparation of high-performance wrought magnesium alloy sheets

Method used

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  • Method and die for preparing magnesium alloy board with multistage continuous corner cutting deformation
  • Method and die for preparing magnesium alloy board with multistage continuous corner cutting deformation

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[0024] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0025] The method for preparing magnesium alloy plates by multi-stage continuous angular shear deformation of the present invention is characterized in that:

[0026] Install the multi-stage continuous angular shear deformation die at the exit of the double rolls of the twin-roll hot rolling mill. The channel openings set in the multi-stage continuous angular shear deformation die correspond to the exit of the double rolls of the hot rolling mill. After being rolled by two rolls, the plate directly enters the equal-height channel of the multi-stage continuous angular shear deformation mold; the friction force generated by the two-roll rolling deformation is used to provide power, so that the magnesium alloy plate to be processed passes through th...

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Abstract

The invention discloses a method and a die for preparing a magnesium alloy board with multistage continuous corner cutting deformation. Friction generated by dual-roller rolling deformation is utilized to provide power, multistage continuous corner cutting deformation of the to-be-processed magnesium alloy board is realized through a die with a continuous curve passage. The passage is stepped, each passage section has equal height, and the included angle between each two adjacent passage sections is equal. The method has the advantages that the process is simple, devices are convenient to produce, large cutting deformation and strain accumulation can be achieved in single-gate rolling deformation, production efficiency is improved evidently, microstructure and crystal orientation of the magnesium alloy board are improved more effectively, and accordingly comprehensive mechanical performance and secondary machining performance of the magnesium alloy board are improved.

Description

technical field [0001] The invention relates to a preparation method of a magnesium alloy plate and a mold thereof, in particular to a method and a mold for preparing a magnesium alloy plate through multi-stage continuous angular shear deformation. [0002] Background technique [0003] Magnesium alloy has the advantages of low density, high specific strength, high specific stiffness, good thermal conductivity, excellent electromagnetic shielding, and high absorption of vibration and impact energy. It is a very important green engineering material for lightweight structures. It is used in automobiles, electronics, Aerospace and other frontier fields of science and technology have broad application prospects. In recent years, some new production processes and technologies in the field of casting have been used to develop new magnesium alloy materials, and great progress has been made. Compared with cast materials produced by these processes, deformed magnesium alloy materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B15/00
Inventor 周涛胡建军杨明波周志明夏华胡红军陈康
Owner CHONGQING UNIV OF TECH
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