One of the key steps in the process of metallographic sampling,whether the traditional method of grinding or automatic grinding,the purpose is to polish the metallographic sample into a mirror,without scratches,the traditional grinding is usually a single plate grinder at fixed speed.

　　The metallographic grinding machine adopts automatic grinding technology,and adopts double disc or multi-disc variable variable speed frequency conversion technology,low noise,low power,fast sample preparation,time and effort saving and other advantages.And you can make one to six samples at a time.Originally,it took three to 10 hours to make a sample,and it only took 1 to 2 hours to make six samples,and the standard was always high,and the samples were highly standardized.

　　Some can shift gears and only 2 gears,and can not apply to most metal samples,and it takes a lot of time to grind a sample,a few hours,long-term so for the workload of personnel is quite large.

　　And the need to replace the different thickness of the sandpaper and polishing cloth,quite troublesome.Modern metallographic grinding machine adopts automatic grinding technology,and adopts double disc or multiple disc variable variable speed frequency conversion technology,low noise,low power,fast sample preparation,time and effort saving and other advantages.

　　During the polishing process,diamond spray polishing agent or polishing paste.Before using the polishing fluid,it should be shaken as well as possible to avoid the precipitation or agglomeration of the polishing abrasive.Before polishing,pour the polishing liquid on the polishing cloth,so that the polishing abrasive is evenly distributed on the polishing cloth.Polishing process according to the need,the right amount of drip sprinkling.

　　Diamond grinding polishing paste can be used evenly applied on the wet polishing cloth,so that it into the fiber gap,and then start the polishing machine for polishing.When polishing paste is added in the polishing process,a small amount of polishing paste can be evenly applied to the whole polishing surface after polishing.

　　In the polishing process of the metallographic polishing machine,while adding the polishing abrasive,the corresponding gold polishing coolant(polishing fluid itself or cooling water)should be used timely and appropriately used to control the humidity of the polishing cloth.