Continuous low-temperature plasma powder treatment and ball milling production device and method thereof

Abstract

The invention discloses a continuous low-temperature plasma powder treatment and ball milling production device and a method thereof. The device comprises a powder circulating conveying pipeline system, a ball mill, a low-temperature plasma discharge pipeline, a vacuum discharge system and a controllable atmosphere system. According to the device, the powder to be treated is circularly conveyed ina pipeline under controllable air pressure and circulation speed by utilizing the powder circulating conveying system, and in the process, on one hand, the ball mill is introduced in the powder pipeline conveying process to perform ball milling refining or alloying on material powder; and on the other hand, a dielectric barrier discharge structure is introduced into part of the powder conveying pipeline to perform plasma discharge treatment on the ball-milled powder flowing in the pipeline. On the basis of a common powder circulating conveying technology, near-normal-pressure discharge plasmas in the pipeline cooperate with mechanical ball milling to jointly treat powder. The device can also be used for carrying out surface cyclic modification treatment on conventional metal, macromolecule or oxide powder.

Description

technical field [0001] The invention belongs to the technical field of powder material processing and powder metallurgy, and relates to plasma gas powder surface treatment and ball milling technology, in particular to a continuous low-temperature plasma powder treatment and ball milling production device. Background technique [0002] With the rapid development of new materials and intelligent manufacturing industries, the development of low-cost, pollution-free, high-performance functional powder preparation technology is the key basis for the fields of electronic information, machinery manufacturing, biomedicine, national defense and military. On the one hand, low-temperature plasma has enough high-energy active substances to excite, ionize or break bonds in reactant molecules, and on the other hand, it will not pyrolyze or ablate the processed materials, so it has unique application value on the surface of modified powder materials . [0003] Plasma is the fourth state o...

AI Technical Summary

Problems solved by technology

[0009] If the large-scale application of low-temperature plasma treatment of powder materials is extended to the fields of metal powder and oxide ceramic powder, the following problems must be solved: (1) There is powder accumulation and agglomeration between particles during powder plasma treatment, The surface of the particles that are not exposed to the plasma atmosphere cannot be treated, and it is difficult to realize the treatment of all the particles, resulting in incomplete and uneven treatment of the particles, and the treatment effect is poor; (2) to achieve controllable plasma discharge intensity and energy

Since the bond energy of polymer materials is much lower than that of metal and oxide materials, the conventional plasma energy used for polymer material treatment is low, and it is not suitable for metal materials and oxide materials; (3) Generally, dielectric barrier plasma discharge or radio frequency plasma discharge has limited space. Therefore, the development of large-area plasma discharge structure is the key problem to solve the large-scale preparation of plasma or process powder.

Images