Amorphous alloy polishing method

Abstract

The invention provides an amorphous alloy polishing method. The method comprises the following steps of: 1) performing mechanical polishing on amorphous alloy to obtain amorphous alloy with roughness Ra of between 0.05 and 0.2mu m; 2) dewaxing the amorphous alloy obtained in the step (1) to obtain the dewaxed amorphous alloy; 3) melting the surface of the dewaxed amorphous alloy by using laser ina protective atmosphere or under vacuum, and cooling to room temperature to obtain amorphous alloy which is processed by the laser; and 4) performing the mechanical polishing on the amorphous alloy which is obtained in the step (3) and is processed by the laser to obtain the amorphous alloy with roughness Ra of between 0.01 and 0.025mu m. The amorphous alloy prepared by the amorphous alloy polishing method provided by the invention has lower surface roughness and higher surface hardness.

Description

technical field [0001] The invention relates to an alloy polishing method, in particular to an amorphous alloy polishing method. Background technique [0002] Amorphous alloys are a new class of alloy materials whose constituent atoms are long-range disordered and short-range ordered. Due to its unique microstructure, it has superior mechanical, physical and chemical properties than conventional crystalline metal materials. [0003] Usually, the cooling rate of amorphous alloys prepared by traditional methods is as high as 10 4 -10 6 K / s, in order to obtain such a high cooling rate for amorphous alloys, the molten metal or alloy needs to be sprayed onto a substrate with good thermal conductivity, and the obtained amorphous alloys can only be some thin strips or filaments. Through the study of amorphous alloys with low critical cooling rates, some alloy systems with a critical rate of amorphous formation as low as 100K / s have been found, and large amorphous alloys can be p...

AI Technical Summary

Problems solved by technology

[0004] Polishing is known as "industrial product beautician". Today, with the continuous development of science and technology, many precision polishing technologies have been developed, such as elastic emission polishing, magnetic fluid polishing, floating abrasive polishing, hydration abrasive polishing, ion beam polishing, etc. etc. These polishing methods can make products reach higher standards in terms of precision and surface roughness, but these technologies have not yet reached the requirements of mass production due to their high cost, so traditional mechanical polishing is still commonly used in the field of polishing polishing technology

[0005] Amorphous materials, which have many advantages such as high strength, high hardness, and good wear resistance, have now attracted widespread attention, and have also begun to be used in consumer products such as mobile phones, but there are few literature reports on their polishing process

Due to the high hardness of the amorphous alloy itself, it is very difficult to use the existing technology to polish the mirror surface of the amorphous alloy, and because the amorphous alloy is mostly prepared by die-casting, die-casting can form extremely complex alloy products, but amorphous and skill die-casting Products generally have the disadvantages of less compactness than rolled plates, poor polishing performance, and easy pitting, which cannot achieve mirror polishing effects, which also restricts the application of amorphous alloy die-casting products