Quality testing standard for electric power fittings forgings

As an important part of power system, the quality of electric power tool forgings is directly related to the safe and stable operation of power system. Therefore, it is very important to establish strict quality inspection standards for ensuring the quality of power fittings forgings. This paper will introduce the quality inspection standard of electric power fittings forgings.

1. Appearance quality inspection
   Appearance quality is one of the important indexes to evaluate the quality of electric power fittings forgings. The appearance should be smooth and smooth, without obvious cracks, pores, inclusions and other defects. For some specific types of power fittings forgings, such as connectors, support parts, etc., their geometry, dimensional accuracy, etc., also need to meet the relevant standards.
   Second, mechanical performance testing
   Mechanical property is one of the important indexes to measure the quality of electric power fittings forgings, mainly including tensile, impact, hardness and other tests. The power metal forgings should have good mechanical properties and be able to withstand various stresses during the operation of the power system to ensure its long-term stable operation.
2. Chemical composition testing
   The chemical composition of power fixture forgings directly affects its mechanical properties and corrosion resistance. Therefore, it is very necessary to test the chemical composition of power fittings forgings to ensure that they meet the relevant standards. Through the analysis of the chemical composition of electric power tool forgings, the information of material and purity can be understood.
3. Non-destructive testing
   Nondestructive testing (NDT) is an important means to evaluate the internal quality of power tool forgings. The defects such as cracks, pores and inclusions in the forgings can be found by X-ray, ultrasonic, magnetic particle and other non-destructive testing methods, so as to ensure that the quality meets the requirements.
   Five, corrosion resistance test
   In the electric power system, the forgings of electric power fittings are often faced with various corrosive environments. Therefore, it is also very important to test its corrosion resistance. Corrosion resistance testing mainly includes salt spray test, impregnation test, etc., in order to evaluate the corrosion resistance of power fittings forgings in different environments.
   To sum up, the quality testing standards of power fittings forgings involve many aspects, from the appearance to the internal quality need to be strictly controlled. Only through scientific and comprehensive quality testing can we ensure that the quality of electric power fittings meets the requirements and provide a strong guarantee for the safe and stable operation of the power system.