1. The influence of temperature change
Temperature change is one of the important factors affecting the precision stability of Precision Mold. During the production process of the mold, the temperature of the mold will change due to frictional heat generated during the processing and fluctuations in ambient temperature. For example, during high-speed cutting, the friction between the tool and the mold material will generate a lot of heat, causing the local temperature of the mold to rise. In the production process such as injection molding, the mold will be subjected to heat transfer from the molten plastic, which will also cause temperature changes. Temperature changes will cause thermal expansion and contraction of the mold material, thereby changing the dimensional accuracy of the mold. For high-precision molds, even a slight temperature change may cause significant dimensional deviations. In order to reduce the impact of temperature changes on precision stability, a temperature control system can be used, such as setting a cooling channel inside the mold to control the mold temperature by circulating coolant. At the same time, choosing a mold material with a small thermal expansion coefficient can also reduce the impact of temperature changes to a certain extent.
2. The influence of the number of uses
The precision stability of Precision Mold will also be affected as the number of uses increases. During repeated molding, stamping and other processing processes, the mold will be affected by wear, fatigue and other effects. For example, in an injection mold, the scouring of the mold cavity surface by the plastic melt will cause surface wear, thus affecting the dimensional accuracy and surface quality of the product. In a stamping mold, the contact and friction between the sheet and the mold will also cause the mold edge to gradually wear out. In addition, the mold will be subjected to periodic stress during use, which is prone to fatigue cracks, further reducing the precision stability of the mold. In order to extend the service life of the mold and maintain the precision stability, surface strengthening treatment technologies such as nitriding and hard chrome plating can be used to improve the hardness and wear resistance of the mold surface. At the same time, a reasonable arrangement of the mold use and maintenance plan, regular inspection and repair of the mold can also effectively reduce the impact of the number of uses on the precision stability.
3. The influence of processing errors
Processing error is also a key factor affecting the precision stability of Precision Mold. In the manufacturing process of the mold, due to the precision limitations of the processing equipment, the imperfection of the processing technology, and human factors, certain processing errors will inevitably occur. For example, tool wear and programming errors in CNC machining may lead to deviations in mold size. These processing errors will directly affect the initial accuracy of the mold, and may be further expanded during use, thereby reducing the precision stability of the mold. In order to reduce processing errors, high-precision processing equipment and advanced processing technology, such as high-speed cutting and EDM, can be used. At the same time, strengthening quality control during processing, conducting strict dimensional inspection and error correction can also improve the precision stability of the mold.
4. Influence of material properties
The performance of mold materials has a crucial influence on the precision stability of Precision Mold. Different mold materials have different mechanical properties, thermal properties and chemical properties, which directly affect the dimensional stability and wear resistance of the mold during use. For example, some materials have high hardness and good wear resistance, but poor toughness, and are prone to cracks during use; while some materials have good toughness, but low hardness and are prone to deformation. Therefore, when selecting mold materials, it is necessary to comprehensively consider various performance factors and select suitable materials according to specific use requirements. At the same time, the heat treatment process of the material will also affect its performance. Reasonable heat treatment can improve the hardness, strength and toughness of the material, thereby improving the precision stability of the mold.
