Main features: In the process of preparing metallographic specimens, pre grinding of the specimen is an essential pre polishing process. Pre grinding the specimen can greatly improve the efficiency of specimen preparation,AMY-1Pre grinding machine is designed through various research and collection of opinions and requirements from users. In order to meet the needs of more material pre grinding, the diameter of the grinding disc of this machine is larger than that of similar domestic products, and the speed of the grinding disc is also different from domestic products. It is an excellent equipment for sample pre grinding.