The weatherability of magnesium forgings of construction machinery refers to its ability to maintain good physical and chemical properties in long-term exposure to the natural environment. Due to the high chemical activity of magnesium alloy, its weather resistance is relatively poor. Therefore, it is of great significance to study and improve the weatherability of magnesium forgings of construction machinery.
First of all, we should start from the material selection, choose the appropriate magnesium alloy material. Different magnesium alloys have different corrosion resistance and weather resistance. At present, the commonly used magnesium forging materials of construction machinery include AZ31, AZ61 and AZ80. These materials have better weather resistance than pure magnesium.
Secondly, surface treatment is carried out to improve the weatherability of magnesium forgings of construction machinery. Common surface treatment methods include anodizing, electroless aluminum plating, electroplating, spraying, etc. Anodizing is a widely used surface treatment method, which can form a dense oxide film on the surface of magnesium forgings, thereby improving the weather resistance and corrosion resistance. In addition, chemical aluminum plating or electroplating aluminum and other methods can also effectively improve the weather resistance of magnesium forgings.
In addition, the weatherability of magnesium forgings of construction machinery is further improved through reasonable design and improved technology. For example, attention should be paid to reducing the possibility of rainwater intrusion in product design, and reasonable drainage holes and waterproof measures should be set up to prevent rainwater from accumulating on the surface of magnesium forgings and causing corrosion. At the same time, during the manufacturing process, factors such as temperature, humidity and packaging are controlled to reduce corrosion and oxidation reactions caused by the external environment.
In addition, regular testing and maintenance, timely detection and treatment of surface corrosion, oxidation and other problems. Conventional detection methods include visual inspection, optical microscope observation, scanning electron microscope analysis, etc. According to different situations, appropriate protective measures can be taken, such as repainting, coating repair, etc., to maintain the good weather resistance of magnesium forgings of construction machinery.
In summary, the weatherability of magnesium forgings of construction machinery can be significantly improved by selecting suitable materials, reasonable surface treatment, optimizing design and improving process. This will help extend the service life of the product and improve the reliability and stability of construction machinery under various environmental conditions.
