Die casting aluminum part is a kind of pressure casting parts, which uses the die casting machine with the casting mold installed. The heated liquid aluminum or aluminum alloy is poured into the feed port of the die casting machine. The aluminum parts or aluminum alloy parts with the shape and size limited by the mold are cast by the die casting machine. Such parts are usually called aluminum die casting. It can manufacture metal parts with complex shape, clear outline and thin-walled deep cavity. Because of the high fluidity of molten metal at high pressure and high speed, it is possible to obtain metal parts difficult to be processed by other processes. The dimensional accuracy of die-casting aluminum parts is high, up to grade it11-13, sometimes to grade it9, and the surface roughness reaches ra0.8-3.2um, with good interchangeability. The material utilization rate is high. Due to the high precision of die-casting aluminum parts, only a small amount of mechanical processing can be used for assembly, and some die-casting aluminum parts can be used directly. The material utilization rate is about 60% - 80%, and the production rate is high. Due to the high-speed filling, the filling time is short, the metal industry solidifies and the die casting operation cycle speed is fast. In various casting processes, die casting method has high productivity and is suitable for mass production.

Aluminum casting has a wide range of uses, can be used as auto parts, various household goods, industrial machine parts and so on. It has different names in different places, such as aluminum die-casting parts, die-casting aluminum parts, aluminum alloy die-casting aluminum parts, etc. It is convenient to use the inlay and set the positioning mechanism on the die casting die, which is convenient to insert the inlay and meet the local special performance requirements of die-casting aluminum parts. Due to the different molding of aluminum casting products, different cleaning methods are needed. Rotating equipment is used to drive the flexible shaft into the casting pipe hole for yarn cleaning. It is suitable for important castings that can not be vibrated and heated. Generally, no mechanical processing is needed, or the processing amount is very small. Therefore, the utilization rate of metal is improved and a large number of processing equipment and work are reduced The casting cost is low; the combination die casting aluminum can be used with other metal or non-metallic materials. It can save assembly time and metal.

Introduction to the processing steps and precautions of die casting aluminum parts:

(1) Aluminum alloy castings are usually heated to 300 ℃ and cooled to room temperature with furnace after holding for a period of time.

(2) The casting is heated to the melting point of eutectic, and then kept at such a temperature for a long time. Then it is cooled to make the strengthening components dissolve well. The high temperature state is kept until room temperature. This process is called solution treatment.

(3) The method of heating the casting after solution treatment to the set temperature, lasting for a period of time, and cooling it slowly in the air is called aging.

(4) If aging strengthening is completed at room temperature, it is called natural aging. If aging strengthening is completed in a higher environment than room temperature and holding for a period of time, it is called artificial aging.

(5) Aging treatment is a spontaneous process of supersaturated solid solution decomposition, which can restore the lattice of alloy matrix to a relatively stable state.

(6) During annealing, the solid solution will decompose and the phase particles will gather, which can remove the internal stress of the casting, keep the casting size stable, avoid deformation and enhance the plasticity of the casting.

(7) Solution treatment can enhance the strength and plasticity of the casting and improve the corrosion resistance of the alloy. The effect of solution treatment is usually the same as solution treatment temperature. Solution treatment holding time. The cooling rate is related to three aspects.

In recent years, China's die-casting aluminum production has been increasing, and the industry has developed in, 10, which is mainly due to China's market advantages. As we all know, die-casting aluminum parts are widely used, especially in the automotive industry, the demand for die-casting aluminum parts is very large. China's automobile industry has developed and expanded in recent years, and the demand for die-casting aluminum parts is increasing rapidly. However, this promotes the development of die-casting aluminum industry in China. Many characteristics of die casting technology make it show great advantages in improving the precision level, production rate and surface quality of non-ferrous alloy castings. With the development of automobile and motorcycle industry and the realization of design requirements such as improving the quality of die castings, saving energy consumption and reducing pollution, the application scope of non-ferrous alloy die casting, especially light alloy die casting machine, is expanding. Driven by the above trends, the advantages of the development of die casting aluminum industry in China are very obvious.