What is the impact of mold processing accuracy on its life

Molds play a key role in the production of plastic automotive parts, and their processing accuracy has a direct impact on mold performance, product quality and production efficiency. The service life of the mold is affected by many factors, including materials, design, maintenance, etc., and processing accuracy also plays a vital role in them.

The impact of processing accuracy on fit
The processing accuracy of the mold directly determines the fit between its various components. High-precision processing can ensure the close fit of the various components of the mold and avoid plastic leakage and molding defects caused by excessive gaps. Insufficient fit will not only cause excessive gaps during the working process, but may also cause wear, deformation and damage to the mold. In the long-term production process, molds with insufficient accuracy are prone to loosening or dislocation, which significantly shortens their service life.

Uniformity of stress distribution
When the mold is working, it will be subjected to stress from different directions. Molds with high processing accuracy can ensure uniform distribution of stress and avoid the occurrence of local stress concentration. Stress concentration can cause premature fatigue and damage to certain parts of the mold, especially in the high-pressure injection molding process, some parts of the mold may crack or deform due to excessive stress. Therefore, ensuring the processing accuracy of the mold can effectively reduce stress concentration and thus extend the service life of the mold.

Importance of surface finish
The surface finish of the mold is another key factor affecting its life. High-precision processing can achieve better surface finish and significantly reduce the roughness of the mold surface. A smooth surface can not only reduce the friction between the plastic and the mold, but also reduce the adhesion of the plastic material on the mold surface. Excessive friction and adhesion will aggravate the wear of the mold surface, thereby shortening its service life. Therefore, improving the processing accuracy of the mold and ensuring good surface finish are effective ways to extend the life of the mold.

Effect of heat treatment effect
In the mold processing process, heat treatment is a key step to enhance its hardness and wear resistance. Molds with high processing accuracy can maintain better shape and dimensional stability after heat treatment. If the processing accuracy of the mold is insufficient, the mold may be deformed after heat treatment, affecting its performance. Deformed molds will not only increase the defective rate during the production process, but also accelerate the wear of the mold. Therefore, ensuring the high precision of the mold during processing is a prerequisite for ensuring the effect of heat treatment.

Optimization of cooling system design
The cooling system design of the mold is crucial to the molding quality and production efficiency of plastic parts. Molds with high processing accuracy can ensure the reasonable layout and size of the cooling channels, thereby achieving uniform flow of coolant. Uneven cooling will cause mold temperature fluctuations, which will in turn affect the fluidity and molding quality of the plastic, and may even cause thermal fatigue and early damage to the mold. Therefore, improving mold processing accuracy can effectively optimize the cooling system design and extend the service life of the mold.