With the continuous development and innovation of construction machinery industry, magnesium alloy, as a lightweight high-strength material, is widely used in the manufacture of construction machinery. As an important form of magnesium alloy products, magnesium forgings have important design principles and manufacturing requirements. This paper will introduce the design principles and manufacturing requirements of magnesium forgings of construction machinery in detail.
Design principles:
1 Strength and stiffness balance: construction machinery needs to withstand large forces and shocks during use, so the design of magnesium forgings needs to improve the stiffness as much as possible on the basis of ensuring sufficient strength to ensure that it can withstand external loads and vibrations.
- Reduce stress concentration: When designing magnesium forgings, stress concentration phenomenon should be avoided, and appropriate radius transition and rounded corner design should be used to reduce stress concentration and improve the fatigue life of parts.
- Reasonable selection of forging geometry and wall thickness: according to the use of construction machinery and the actual stress distribution, reasonable selection of magnesium forging geometry and wall thickness to improve the strength and stiffness of parts, and reduce unnecessary material consumption.
- Durability design: Construction machinery as a regular operation and stress equipment, need to have a long service life. Therefore, when designing magnesium forgings, it is necessary to consider its durability in the long-term use process, and reasonable selection of materials, surface treatment methods and anti-corrosion measures.
Manufacturing requirements:
- Material selection: Magnesium alloy material has a variety of different grades to choose from, should be based on the use of construction machinery environment, working conditions and requirements, choose the appropriate magnesium alloy material. At the same time, it is necessary to ensure that the quality of the material is stable and avoid defects such as inclusions and pores.
- Heating and forging: magnesium alloy in the forging process is very sensitive to temperature, too low temperature will lead to difficult deformation, too high temperature and easy to cause burning. Therefore, in the heating and forging process, attention should be paid to controlling the temperature to ensure that the forging is carried out in the appropriate temperature range.
- Reasonable post-treatment process: Magnesium forgings need to be post-treated after forging, such as heat treatment, stress annealing and surface treatment. Reasonable post-treatment processes can improve the performance and durability of magnesium forgings, such as heat treatment to improve the strength and toughness of the material.
- Strict quality control: In the manufacturing process of magnesium forgings, strict quality control measures need to be implemented, including reasonable process parameter setting, detection, testing and inspection. For important construction machinery magnesium forgings, it is also necessary to carry out non-destructive testing and mechanical performance testing to ensure the quality and safety of parts.
In SUMMARY:
The design principles and manufacturing requirements of magnesium forgings of construction machinery are the key factors to ensure the quality and performance of the parts. Through reasonable design principles and strict manufacturing requirements, the strength, stiffness and durability of magnesium forgings can be improved to ensure its reliable application in construction machinery, and contribute to the development and progress of the industry. At the same time, we should pay attention to continuous improvement and innovation, and actively promote the development and application of magnesium forgings in construction machinery.
