Metallographic microscope is a high-tech product developed by perfectly combining optical microscope technology, photoelectric conversion technology, and computer image processing technology. It can easily observe the metallographic image on the computer to analyze the metallographic pattern. , Rating, etc. and output and print pictures. It can be divided into: upright metallographic microscope (GPM-100, IDL-100), inverted metallographic microscope (MG-MI, GX51, GX41), field metallurgical microscope (MG-100) and so on. As we all know, the composition of the alloy, the heat treatment process, and the hot and cold machining process directly affect the changes in the internal structure and structure of the metal material, thereby changing the mechanical properties of the machine parts. Therefore, using metallurgical microscope to observe, analyze and analyze the internal structure of metal is an important method in industrial production.
The metallographic microscope is mainly composed of an optical system, an illumination system, a mechanical system, and accessory devices (including photography or other devices such as microhardness, etc.). According to the light reflection characteristics of different tissue components on the surface of the metal sample, these tissue components are optically studied and described qualitatively and quantitatively in the visible range with a microscope. It can display the metal structure characteristics within the scale of 500 ～ 0.2m. As early as 1841, the Russians (п.п.ÐнÑов) studied the patterns on Damascus steel swords under a magnifying glass. By 1863, the British (HCSorby) transplanted petrographic methods, including sample preparation, polishing and etching, into steel research, developed metallographic techniques, and later photographed a batch of low magnification and Metallographic photographs of other organizations. The scientific practice of Sobie and his contemporaries, the Germans (A. Martens) and the French (F. Osmond), laid the foundation for modern optical metallographic microscopy. By the beginning of the 20th century, optical metallographic microscopy had been perfected and popularized for the microscopic analysis of metals and alloys. It is still a basic technique in the field of metallurgy.
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