The failure analysis and prevention strategy of magnesium forgings of construction machinery are of great significance to ensure the reliability and safety of parts. Common analysis methods and prevention strategies for magnesium forgings failures are described below.
- Failure analysis method:
Metallographic analysis: Through metallographic microscope observation, microstructure analysis and phase detection of the failed magnesium forgings, the failure mode, grain size, grain boundary situation can be determined, and whether there are lattice orientation abnormalities, inclusions, defects and other problems.
- Stress analysis: Through stress testing and finite element analysis and other methods, evaluate the stress situation of the parts, understand the stress distribution and stress concentration location, so as to determine the main cause of failure.
Chemical composition analysis: chemical composition analysis of the failed magnesium forgings to exclude raw material quality problems and determine that the composition meets the requirements. - Environmental corrosion analysis: Analyze the corrosion of magnesium forgings under different environmental conditions to assess the impact of corrosion on component failure.
- Failure prevention strategy:
- Reasonable design: In the design stage, reasonable selection of materials, geometric size and shape should be determined according to the function and stress of mechanical parts, and appropriate strengthening measures should be added to improve the bearing capacity and fatigue resistance of magnesium forgings.
- Strict material control: strict quality control of raw material procurement and storage to ensure accurate ingredients, qualified ingredients, to avoid impurities, inclusions and other effects on failure.
- Fine machining process control: reasonable selection of forging parameters, heat treatment process, control of cooling rate and temperature gradient to improve the mechanical properties and corrosion resistance of parts.
- Surface protection measures: the use of surface treatment methods, such as coating, anodizing, electroplating, etc., to increase the corrosion resistance and wear resistance of parts.
- Regular testing and maintenance: for construction machinery in use, regular testing, maintenance and maintenance, timely discovery and repair of possible problems, in order to extend the service life of magnesium forgings.
The above are some common methods and guidelines for failure analysis and prevention strategies of magnesium forgings in construction machinery. Through the analysis of failure causes and reasonable preventive measures, the reliability and safety of magnesium forgings can be improved to ensure the normal operation and use of construction machinery.
