Casting aluminum alloy has some advantages that other castings can't match, especially since the automobile lightweight, casting aluminum alloy casting has been widely used in car industry.

The density of cast aluminum alloy is lower than that of cast iron and cast steel, but the specific strength is higher. Therefore, under the same load conditions, aluminum alloy castings can reduce the weight of layout. Therefore, aluminum alloy castings are widely used in aviation industry, power machinery and transportation machinery.

Aluminum alloy has outstanding casting function. Because of the low melting point, the casting methods such as metal mold and die casting can be widely used to improve the internal quality, scale precision, surface finish and production power of castings.

Because of the large latent heat of solidification, the solidification process of aluminum alloy is much longer than that of cast steel and cast iron under the same component condition, which is conducive to casting thin-walled and disordered castings.

Aluminum casting in the use of priority areas, its car occupation occupies a large part, to a certain extent, especially in the car industry now pay special attention to the characteristics of lightweight, so its aluminum castings can be widely used in the car occupation, the density of aluminum castings is actually lighter than the requirements of iron castings and steel castings, and aluminum castings in the process of use of its The strength is relatively large.

Aluminum casting itself is very light, to a certain extent, it can be useful to accept a relatively high component, in the process of planning can be useful to reduce the structural component of its casting, so such equipment in industry, transport machinery and power machinery to reach a more extensive use.

Aluminum castings, to a certain extent, perform outstanding functions in water and atmosphere. It is because of this that they can be used in the manufacture of folk utensils, especially pure aluminum has excellent corrosion resistance in oxidizing acids such as nitric acid and acetic acid.

Aluminum casting in the chemical industry, its aluminum casting in the use of will also have a more extensive use, to a certain extent, mainly use its aluminum alloy or pure aluminum in the heat conduction function, useful products made from it can be used in the process of chemical production, heat exchange equipment and power machinery parts with good heat conduction function.

During the operation of aluminum casting, its casting mold sample is mainly used. In the process of inspection, its mechanical properties should conform to the fixed degree. During the operation, the casting mold body should be used. The mechanical properties of the sample cut from the designated position should not be lower than 75% of the single cast sample. If there are special requirements, it can be agreed by both parties.

Mould dimensions for aluminum castings

1. The geometric shape and size of casting mould shall meet the requirements of casting drawing.

2. The dimensional tolerance of casting mould shall comply with relevant regulations. If there are special regulations and requirements, they must be indicated on the drawing.

3. Requirements for physical position tolerance of casting mould.

4. Casting die dimensional tolerance does not include casting slope, and its non machined surface: the small end is taken as the reference for the inclusion surface, the large end is used for the included surface, the large end is taken as the reference for the surface to be processed, and the small end is taken as the reference for the included surface. If there are special regulations and requirements, it must be indicated on the drawing.

With the development of social economy, the usage of die casting is increasing, and the die casting itself is a kind of pressure casting parts. The quality of die casting parts includes appearance quality, internal quality and service quality. Appearance quality refers to the surface roughness, surface quality, dimensional tolerance, shape and position tolerance and quality deviation of castings; internal quality refers to chemical composition, physical and mechanical properties, metallographic structure, as well as holes, inclusions and cracks existing in the casting; service quality refers to that the castings can meet the requirements Various use requirements and working properties, such as properties, corrosion resistance, machinability, weldability, etc.

Because of the injection caused by the inherent filling of die casting method, the cooling of metal mold and the damage of high production efficiency to the die casting, many defects inevitably occur in the die casting. Some defects are compatible with the die casting method, while some can be avoided. Some defects will not affect the performance of the die casting, so they will not cause casting waste, while some defects will not cause casting waste It may affect the properties of castings and become waste products. Quality is the lifeline of an enterprise, an important pillar to improve the competitiveness of an enterprise, and an important condition to improve the economic efficiency of an enterprise. Therefore, improving the quality of die casting parts is very beneficial to both the economic benefits of the die-casting enterprises and the social benefits of reducing the waste of resources.