The role of metallurgical microscopy in scientific research and business
Industrial production and the rapid development of science and technology, so that metal materials are widely used. This is because metal materials have excellent mechanical properties (strength, hardness, plasticity), physical properties (electrical conductivity, thermal conductivity, magnetic conductivity, etc.), chemical properties (corrosion resistance, oxidation resistance, etc.) and process performance (casting, weldability, hot and cold processing, etc.). With atomic energy technology, rocket technology, jet technology, aerospace technology, marine technology, chemistry and radio and other technologies are widely used, a variety of metal materials, higher performance requirements, often require metals and alloys with high seismic strength, high and low temperature resistance, heat shock resistance, the modulus of elasticity does not change with the temperature and so on. And these properties and the material's metallographic structure is closely linked together.
A long time ago, people have used various methods to study the nature of metals and alloys, properties and organisation of the intrinsic connection between, in order to find to ensure the quality of metals and alloys and the manufacture of new alloys, but only after the introduction of the microscope, people have the conditions for in-depth study of metal materials. In the magnification of hundreds of times or even tens of thousands of times under the microscope, the observation of the internal organisation of metal materials, that is, the metallographic structure, found that the macro performance of the metal and the metallographic organisation of the form of the close relationship between the metallographic organisation of the method of metallurgical organisation analysis has become the most basic, the most important, and the most widely used one of the methods of research. So in any mechanical manufacturing, metallurgical enterprises and its corresponding research institutions, science and technology colleges and universities are equipped with metallurgical inspection room or metallurgical research room, the use of a variety of metallurgical microscope engaged in a large number of complex, fine metallurgical organisation research work.
Metallographic microscope is metallurgy, machinery manufacturing and transport and other industrial production eyes, to prevent the production of waste products, improve product quality plays an important role. It is used in industrial production to check the quality of metal smelting and rolling, to control the heat treatment process, to help improve the operation of the heat treatment process, to improve the quality of the workpiece, to study the existence of non-metallic inclusions in metal materials, to observe the morphology of the inclusions, the size, distribution and its quantity, to determine the optical properties of the inclusions, so as to determine the type of inclusions, and to evaluate the level of the material accordingly, to use a high-magnification metallurgical microscope on the Metal parts fracture research, according to the shape of the fracture to determine the size of the grain, analyse the cause of mechanical damage, the use of high-temperature metallurgical microscope can also help people to study the law of tissue transformation, tracking the transformation process, continuous observation of metal or alloy in a temperature range of tissue transformation. Therefore, metallographic microscope is widely used in iron and steel smelting, boiler manufacturing, mining, machine tools, tools, automobiles, shipbuilding, bearings, diesel engines, agricultural machinery and other industrial sectors, industrial production, national defence engineering and scientific research work is widely used in optical instruments.
