With the rapid development of the automotive industry, the material performance requirements for automotive parts are becoming increasingly stringent. As an advanced material testing equipment, the innovative application of Sinowon Micro Hardness Tester in the automotive industry not only improves the accuracy and efficiency of material testing, but also greatly promotes the quality control and R&D innovation of automotive products. Hardness testing is crucial in the automotive industry to ensure that aluminum parts meet the required standards, prevent tool damage and extend the service life of parts.1.What is a Micro Hardness tester:Micro Hardness testers have been widely used in the development, research, actual testing and quality management of metal materials.Hardness in special fields, especially Vickers hardness and Knoop Hardness as substitute properties to replace other material properties.It is often used to measure the hardness of each phase in the material or an extremely thin layer on the metal surface (such as electroplating layer, nitriding layer), etc. Its value can be expressed by Mohs hardness HM, Vickers hardness HV or Knoop hardness HK. During the measurement, the sample must be ground and polished to a bright surface, and then exposed to the micro structure after erosion, and then tested and observed under the Micro Hardness tester.2.Working conditions: The Micro Hardness tester should work within the temperature range of 20℃±8℃, and the humidity should be kept within the range of ≤70%. It is strictly forbidden to use it in an environment with dripping water or dust, let alone in an environment with corrosive gas and radiation. The Micro Hardness tester should be fixed in a fixed position and is not suitable for frequent handling or carrying.3.Sinowon Micro Hardness tester device composition: The Micro Hardness tester consists of a host, a micrometer eyepiece, various test benches, a standard hardness block, various indenters, an objective lens, a leveling angle, etc.The micrometer eyepiece is used to observe the metallographic or micro structure, determine the test site, measure the diagonal length, collect data, etc.; the hardness tester host completes the switching between the eyepiece and the indenter, applies the load at the determined test site, completes the movement of the platform to find the image point, etc.; the related accessories are mainly for the clamping and stabilization of the specimen, etc.4.Main uses of Micro Hardness tester: Micro Hardness tester is mainly used to measure tiny, thin specimens and brittle hardware. By selecting various accessories or upgrading various structures, it can be widely used for various metals (ferrous metals, non-ferrous metals, castings, alloy materials, etc.), metal structures, metal surface processing layers, electroplating layers, hardened layers (oxidation, various infiltration layers, coating layers), heat treatment specimens, carburized specimens, quenched specimens, tiny parts of phase inclusions, glass, agate, artificial gems, ceramics and other brittle and hard non-metallic materials. Multi-point measurement with precise positioning in fine parts, deep testing and analysis of indentations, testing and analysis of infiltration layers, testing of hardness gradients, observation and research of metallographic structure, measurement and analysis of coating thickness, etc. It is an essential testing instrument for laboratory quality inspection departments, quality control of metrology institutes, and material research.5.Working principle: The Micro Hardness test is to press a diamond tetrahedral pyramid indenter with an angle of 136° between two opposite faces into the sample surface under a certain test force. After maintaining the pressure for a certain period of time, the test force is removed, the diagonal length of the indentation is measured, and then the corresponding table of diagonal length and Micro Hardness value is checked to obtain the Micro Hardness test value.
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