A metallographic engineer who can perform pulse detection has summarized a rapid preparation method using metallographic sandpaper three-step grinding, which is simpler in operation and cheaper in cost, by practicing, analyzing, and comparing various preparation plans for high carbon steel samples. I will share it with you for your reference.

Material of sample: 1040 high carbon steel


Experimental purpose: To observe the microstructure composition and distribution of materials


The process of cutting, sampling and inlaying will not be repeated here, but only the grinding preparation process will be discussed. The engineer adopts the five step method, the first three steps are polished with metallographic abrasive paper, the last two steps are polished with diamond suspension, and the polarized light is observed under 400X magnification. In order to express more clearly, the preparation methods are listed as follows:


PSI: pounds per square inch