Technical Key Points of Using Digital Metallographic Microscope to Take High Quality Metallographic Photographs

The advantages of digital metallographic microscope were introduced, and typical metallographic photographs were listed. From the aspects of camera hardware, raw material quality, metallographic sample preparation method and photo shooting skills, the key points of taking high quality metallographic photographs were elaborated in detail. The results show that in order to high quality metallographic photographs, besides the influence factors of the camera hardware the observation surface of the metallographic samples should be grinded flat, and the samples should be mounted when necessary. The polished surface of metallographic samples should be free of scratches, and the appropriate etchant should be selected to achieve the right degree of etching. When taking metallographic photographs, the brightness and the magnification should be appropriate. Corrected the white balance. When taking polarized photographs, the angle of the deviation detection slider should be adjusted to make the color contrast of the images most obvious.