The quality control and inspection method of magnesium forgings of construction machinery is the key step to ensure that the parts meet the design requirements and have high reliability. The following will introduce several commonly used quality control and inspection means.
- Composition analysis: The composition analysis of magnesium alloy materials is the primary link of quality control. By analyzing the content of each element in magnesium alloy, the quality of raw materials can be judged to meet the requirements. The commonly used analytical methods include spectral analysis, electron microanalysis and so on.
- Metallographic structure testing: Metallographic structure testing is an important means to evaluate the quality of magnesium forgings. Through metallographic microscope observation, the grain size, lattice orientation, defects of the material can be determined, so as to evaluate the mechanical properties and heat treatment effects of the material.
- Size detection: Size detection is an important indicator to measure the processing accuracy of magnesium forgings. Commonly used detection methods include coordinate measurement, image measuring instrument, etc., which can accurately measure and compare the shape, size, position and other dimensions of the workpiece.
- Hardness test: Hardness test is the evaluation of the mechanical properties of magnesium forgings. Commonly used hardness test methods include Rockwell hardness test, Brinell hardness test and so on. By measuring the hardness value, you can know the strength, toughness and wear resistance of the material.
- Strength test: Strength test is an important method to evaluate the overall strength of magnesium forgings. Commonly used strength tests include tensile test, compression test, impact test and so on. The tensile strength, yield strength, elongation and other mechanical parameters of magnesium forgings can be determined by applying different loads and test conditions.
- Corrosion performance test: magnesium alloy has a certain tendency to corrosion, so corrosion performance test is also a key link in the quality control process. Commonly used corrosion testing methods include salt spray test, immersion test, etc., which can evaluate the corrosion resistance of materials and the effect of surface protection measures.
The above is the common means of quality control and testing of magnesium forgings in construction machinery. Through scientific and effective quality control and testing means, the quality stability and reliable performance of magnesium forgings can be ensured, and the safety and service life of construction machinery can be improved.
