Metallographic grinding and polishing process

Abstract

The invention discloses a metallographic grinding and polishing process. The metallographic grinding and polishing process comprises the steps that (1) the surface of a metallographic specimen is cleaned; (2) the surface of the metallographic specimen is ground; (3) the metallographic specimen is polished; and (4) cleaning is conducted. The metallographic specimen is cleaned and polished through vibration of an ultrasonic washing unit, when the metallographic specimen is cleaned, liquid inside the ultrasonic washing unit is industrial pure water, diamond abrasive grains, polishing paste and glycerinum are put into the ultrasonic washing unit for cleaning, resources can be saved, and influence on the subsequent grinding and polishing process can be avoided; a rubber soft bottom is arranged at the bottom of the metallographic specimen, so that the surface is prevented from being scratched in the grinding process, the metallographic specimen is dried for many times, oxidation of easily oxidized metals can be prevented in the operation process, and it is ensured that the surface of the metallographic specimen is even in color and has no water spot; coating of antirust agents is avoided, and the retention time is long in a vacuum environment.

Description

technical field [0001] The invention relates to the technical field of metallographic sample preparation, in particular to a metallographic grinding and polishing process. Background technique [0002] The preparation of metallographic samples accounts for about 2 / 3 of the total time of metallographic analysis. How to improve the efficiency of metallographic sample preparation is of great significance. [0003] The traditional metallographic sample preparation adopts manual grinding, which is inefficient. The sample after the machine must be precision ground. The metallographic tester spreads metallographic sandpaper on the glass plate and performs 4-5 manual grinding. The grain size of the sandpaper is getting finer and finer, from (180#-)240#-400#-600#-800# to grind in sequence, the fine grinding sample needs to be increased to 1000# or even 1200#, and every time a piece of sandpaper is replaced, at the same time Samples and table tops need to be cleaned. After the grind...

AI Technical Summary

Problems solved by technology

[0015] The technical problem to be solved by the present invention is to provide a metallographic grinding and polishing process to solve the above-mentioned lack of metallographic antirust treatment for metallographic samples caused in the prior art, so in the metallographic sample preparation process, especially after erosion , it is very easy to oxidize and generate stains on the surface, which affects the observation of the metallographic structure, and does not degrease and decontaminate the metallographic samples, which is a defect that easily affects the subsequent grinding and polishing process