The quality inspection standard of agricultural machinery forgings is an important means to ensure that the product meets the specified quality requirements and performance indicators before leaving the factory. The following is the interpretation of the quality testing standards for agricultural machinery forgings in general: Size testing: including the measurement of length, width, height, diameter, etc., to ensure that the size of the forgings is consistent with the design requirements. Shape detection: By comparing the shape difference between the actual forging and the standard sample or CAD drawing, the presence of shape deviation is detected. Common methods include projectors, coordinate measuring instruments and so on. Material testing: chemical composition analyzer, metallographic microscope and other equipment are used to detect the main components of the material to ensure that the alloy composition meets the standard, and to exclude possible impurities and non-metallic inclusions. Hardness testing: Through the hardness tester to test the hardness of the forgings to determine its mechanical state (such as strength, toughness, etc.), according to the requirements of different forgings, commonly used hardness testing methods are Babbitt hardness, Rockwell hardness, Vickers hardness, etc. Surface quality inspection: The surface of the forging is inspected to eliminate defects such as cracks, bubbles, slag inclusion, etc., and to evaluate the surface roughness, modeling quality, etc. Common methods include visual inspection, appearance inspection, flaw detection and so on. Strength and durability testing: mechanical properties of materials and forgings are tested through tensile test, impact test, fatigue test, etc., to assess the strength and durability of forgings under normal working conditions. Performance test: According to different forging uses and specific requirements, some specific performance tests, such as corrosion resistance, wear resistance, high temperature resistance, etc. Through the interpretation of the above quality testing standards, it can ensure that agricultural machinery forgings are qualified in the production process, and ensure that their quality and performance meet the relevant requirements, and improve the overall quality and service life of agricultural machinery and equipment
