Grinding is the key to preparing metallographic samples, which is a common consensus among metallographic sample preparation engineers. How can an ideal metallographic sample surface be quickly ground? Editor's suggestion: To improve the efficiency of metallographic sample preparation, start by choosing metallographic sandpaper!


There are many brands, materials, and models of metallographic sandpaper on the market, including imported and domestic ones, such as silicon carbide, alumina, diamond, ceramics, and so on. There are really too many, how to choose?


Among the dazzling array of metallographic sandpaper, silicon carbide metallographic sandpaper is more widely used and commonly used, basically equivalent to a universal type. Among them, water resistant metallographic sandpaper is the preferred choice, which can be ground not only manually but also automatically. However, in water resistant silicon carbide sandpaper, the quality is also mixed, and the following methods need to be used to distinguish the quality:

1、 Look at the appearance:


Metallographic sandpaper supplied by legitimate manufacturers will have standardized packaging boxes and product labels, which will clearly indicate the product name, brand, model, size, particle size, usage method and precautions, as well as the batch of sandpaper.


Take out the sandpaper from the packaging box and you will see obvious features on the back of the sandpaper, such as&# quo; 600/P1200” Such abrasive particle size identification and related markings are clear and standardized.

2、 Touch with your hand:


Touch the surface of metallographic sandpaper with your hand, and the abrasive particles have a uniform and dense texture. Rubbing vigorously with the palm of the hand will not result in particle shedding; If left flat for a long time, there will be no curling. The quality of such sandpaper is basically acceptable.


3、 Actual Trial:


Committed step, try!


After the selected metallographic sandpaper meets the above two conditions, it is recommended to purchase a trial package of metallographic sandpaper to prepare samples, and use the use effect as a criterion. Practice is the reliable standard for testing quality, which I believe everyone agrees with.


After practical trial and comparison, it is determined that sandpaper with good grinding performance, high removal rate, and wear resistance is relatively good. Abrasive resistant sandpaper has a longer lifespan and better cost-effectiveness.

To improve the efficiency of metallographic sample preparation, start by choosing metallographic sandpaper! By using the methods introduced above, high-quality metallographic sandpaper can be selected. Have you learned these selection methods? If you have any questions during the metallographic sample preparation process, please feel free to contact the Kemai Testing Engineer and we will wholeheartedly provide you with a solution.