The high precision of die-casting molds is achieved through the combined effect of multiple key factors. In the die-casting process, the precision and quality of the mold directly affect the quality and performance of the final product.

The accuracy of mold design is the basis for achieving high precision. In the die-casting mold design stage, the structure, size and shape of the mold need to be accurately determined according to the product requirements and process characteristics. Designers need to consider factors such as material shrinkage, thermal expansion and contraction, and reasonably design the mold structure to ensure that the mold can accurately replicate the shape and size of the product.

The selection of mold materials and processing technology also play a key role in mold accuracy. Die-casting molds need to have high strength, high hardness and wear resistance to ensure that the mold will not be deformed or damaged during high-pressure injection. Common mold materials include tool steel, alloy steel and cemented carbide, etc. These materials need to undergo precision processing such as CNC machining, EDM machining, etc. to ensure the accuracy and quality of the mold.

The processing accuracy and assembly accuracy of the mold also have an important influence on the accuracy of the mold. The processing accuracy of the mold includes the dimensional accuracy, surface roughness and parallelism of the mold parts, and the processing quality of each part needs to be strictly controlled. The assembly accuracy of the mold includes the matching accuracy, clearance and sealing of the mold parts, etc. It is necessary to ensure the matching accuracy and stability between the various parts of the mold.

The use and maintenance of the mold also affect the accuracy of the mold. During the production process, it is necessary to strictly control the use conditions of the mold to avoid damage or deformation of the mold due to overload and improper operation. Regular maintenance of the mold, such as cleaning, lubrication and adjustment, can extend the service life of the mold and maintain the accuracy and stability of the mold.