What are the characteristics of aluminum alloy die-casting products

 1) Aluminum alloys can be classified according to their performance characteristics and uses

Four types of rust proof aluminum (LF), hard aluminum (LY), ultra hard aluminum (LC), and forged aluminum (LD)

2) Cast aluminum alloys are divided into different types based on the addition of the main alloying elements

Four types of aluminum silicon system (AL Si), aluminum copper system (Al Cu), aluminum magnesium system (Al Mg), and aluminum zinc system (Al Zn)

Commonly used grades include ADC12 (A383) and ADC10 (A380)

3) Advantages of Aluminum Alloy Die Casting

Good product quality: The casting has high dimensional accuracy, good surface smoothness, high strength and hardness. The strength is generally increased by 25-30% compared to sand casting, but the elongation is reduced by about 70%. The size is stable and the interchangeability is good. Die cast aluminum thin-walled complex castings, for example: the current minimum wall thickness of zinc alloy die casting can reach 0.3mm, and aluminum alloy die casting can reach 0.5mm. High production efficiency: The machine has high productivity. For example, the domestically produced J-III3 horizontal cold air die casting aluminum machine can die cast aluminum 600-700 times per eight hours on average, and the small hot chamber die casting aluminum machine can die cast aluminum 3000-7000 times per eight hours on average. Excellent economic effect: Due to the precise size and smooth surface of die cast aluminum parts. Generally, it is used directly without mechanical processing or with a small amount of processing, which not only improves the metal utilization rate but also reduces a large amount of processing equipment and working hours. The cost of castings is cheap, and composite die cast aluminum can be used with other metal or non-metallic materials, saving both assembly time and metal.

4) Disadvantages of aluminum alloy die-casting

Due to the high filling speed and unstable flow state of liquid metal in the mold cavity during die casting, the general die casting aluminum method is used. However, the casting is prone to porosity and cannot undergo heat treatment. Die casting is more difficult for castings with complex concave surfaces. The lifespan of aluminum alloy die casting molds is relatively low, with a lifespan of approximately 80000 strokes. Small batch production is not suitable, mainly due to the high manufacturing cost of die cast aluminum molds and the uneconomical nature of small batch production. Aluminum alloy die-casting is not easy to achieve anodizing, as it is prone to leaving many bubbles or sand holes after die-casting, resulting in poor repair of the appearance and inability to cover the appearance after oxidation.