Method for preparing metal thin-wall microtubes
A technology of thin metal and micro-tubes, applied in metal processing equipment, manufacturing tools, forming tools, etc., can solve the problems that it is difficult to meet the forming requirements of metal thin-walled micro-tubes, unfavorable processing of dimensional precision pipe fittings, etc., to avoid the possibility of workpiece fracture, The effect of high mechanical properties and dimensional accuracy, and flexible processing technology
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[0030] The present invention will be further explained below in conjunction with the specific implementation of examples.
[0031] A method for preparing metal thin-walled microtubes, comprising the steps of:
[0032](1) Pretreatment: The metal raw material is processed by severe plastic deformation to obtain a microstructure with ultra-fine grains, so that the metal material has as high a plasticity as possible, so as to fully refine the grain and reduce the intermediate phase size, reducing the anisotropy of the material; depending on the processed material, the limit values of the parameters of the severe plastic deformation are different, but the superplastic deformation conditions are met;
[0033] (2) Billet making: The raw material pretreated by severe plastic deformation is press-processed and machined to make a round tube-shaped rough billet, and then the rough tube billet is finely ground on a precision grinder to form a fine tube billet; the fine tube billet One ...
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