In the process of mechanical preparation of metallographic samples, the common method of grinding process is to use metallographic abrasive paper to grind the sample surface from coarse to fine, all the way down, in order to remove the deformation layer caused by cutting and rough grinding, and prepare for subsequent polishing. However, when the metallographic abrasive paper is used for grinding, especially for the material with relatively soft and strong ductility, the abrasive medium particles of the metallographic abrasive paper are often embedded in the surface of the sample. How can the embedded defects be simply and conveniently prevented under the existing conditions in the laboratory? Xiaobian has a clever trick. You can use a little paraffin or candle. Don't you believe it? Look down!

This problem can be detected by metallographic engineers. It has been proved by practice that it is simple and easy to use! The method is: before grinding, coat the surface of the metallographic abrasive paper with paraffin, but do not be too thick, otherwise it will affect the grinding efficiency of the metallographic abrasive paper. A thin layer is good. For soft metals or low melting point metals, this method is very effective. You might as well try it!

Of course, our engineers have a little secret. It doesn't matter if there is no paraffin in the laboratory. It's OK to use candle wax instead of paraffin. Practice has proved that it's more effective. Candles can be bought everywhere. They are sold in the supermarket across the street from the laboratory. Is it very simple and convenient?


Pulse testing engineers also have many similar tricks to treat common defects in various metallographic grinding and polishing. Years of accumulated work experience can always surprise metallographic white people. If you encounter problems, go to consult. It's free. You're welcome!