How to Adapt Magnification Observation of Stereomicroscopes to Different Requirements
The rapid development of industrial production and science and technology has led to the widespread application of metal materials. This is because metal materials have excellent mechanical properties (strength, hardness, plasticity), physical properties (conductivity, thermal conductivity, magnetic conductivity, etc.), chemical properties (corrosion resistance, oxidation resistance, etc.), and process properties (castability, weldability, cold and hot processing, etc.). With the widespread application of atomic energy technology, rocket technology, jet technology, aerospace technology, navigation technology, chemistry, and radio technology, higher requirements are placed on the various properties of metal materials, often requiring metals and alloys to have high seismic strength, high and low temperature resistance, heat shock resistance, and elastic modulus that does not change with temperature. And these properties are closely related to the metallographic structure of the material.
Long ago, people used various methods to study the intrinsic relationship between the properties, properties, and microstructure of metals and alloys, in order to find methods to ensure the quality of metal and alloy materials and manufacture new alloys. However, it was only after the advent of microscopes that people had the conditions to conduct in-depth research on metal materials. Under a microscope that magnifies hundreds or even tens of thousands of times, the internal structure of metal materials, namely the metallographic structure, was observed. The close relationship between the macroscopic properties of metals and the morphology of metallographic structures was discovered, making metallographic structure analysis one of the most basic, important, and widely used research methods. Therefore, in any mechanical manufacturing, metallurgical enterprise, corresponding research institutions, science and engineering colleges, etc., there are metallographic inspection rooms or metallographic research rooms, which use various metallographic microscopes to engage in a large amount of complex and fine metallographic structure research work.
Metallographic microscope is the eye of industrial production such as metallurgy, mechanical manufacturing, and transportation, playing an important role in preventing waste and improving product quality. In industrial production, it is used to inspect the quality of metal smelting and rolling, control the heat treatment process, help improve the operation of heat treatment process, enhance the quality of workpieces, study the existence of non-metallic inclusions in metal materials, observe the morphology, size, distribution and quantity of inclusions, measure the optical properties of inclusions, determine the type of inclusions, and correspondingly evaluate the grade of materials. By using high-power metallographic microscope to study the fracture surface of metal parts, the size of grains can be determined based on the shape of the fracture surface, and the reasons for mechanical failure can be analyzed. High temperature metallographic microscope can also help people study the laws of tissue transformation, track the transformation process, and continuously observe the transformation of metal or alloy within a certain temperature range. Therefore, metallographic microscopes are widely used in industrial sectors such as steel smelting, boiler manufacturing, mining, machine tools, tools, automobiles, shipbuilding, bearings, diesel engines, agricultural machinery, etc., and have become optical instruments widely used in industrial production, national defense engineering, and scientific research work.
