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What is the reason for the unstable processing size of electronic plastic parts?
by：Vowin Rapid Prototyping
2023-02-20
Electronic plastic parts processing also occupies a very important position in today's market. As we all know, today's electronics industry has broad prospects for development, and various plastic products will be used in the production and processing of electronic products.
During the processing of electronic plastic parts, errors such as unstable quality will inevitably occur. What is the reason behind this?
1. Inconsistent molding conditions or improper operation. Injection molding, temperature, temperature. .Process parameters such as pressure and time must be strictly controlled in accordance with process requirements; injection pressure is too low, pressure holding time is too short, mold temperature is too low or uneven, cylinder and nozzle temperature is too high, plastic parts cooling is insufficient, resulting in the size of plastic parts unstable.
2. Improper selection of molding raw materials; the shrinkage rate of molding raw materials has a great influence on the size of plastic parts. If the precision of molding equipment and molds is high, but the shrinkage rate of molding raw materials is large, it is difficult to guarantee the size of plastic parts. Generally speaking, the greater the shrinkage of the molding material, the more difficult it is to ensure the size of the plastic part.
3. Mold failure; the structural design and manufacturing accuracy of the mold directly affect the size of the plastic part. During the molding process, if the mold rigidity is insufficient or the molding pressure of the cavity is too high, the mold will be deformed, and the molded dimension of the plastic part will be unstable.
4. Equipment failure may easily lead to unstable dimensions of plastic parts.
During the processing of electronic plastic parts, errors such as unstable quality will inevitably occur. What is the reason behind this?
1. Inconsistent molding conditions or improper operation. Injection molding, temperature, temperature. .Process parameters such as pressure and time must be strictly controlled in accordance with process requirements; injection pressure is too low, pressure holding time is too short, mold temperature is too low or uneven, cylinder and nozzle temperature is too high, plastic parts cooling is insufficient, resulting in the size of plastic parts unstable.
2. Improper selection of molding raw materials; the shrinkage rate of molding raw materials has a great influence on the size of plastic parts. If the precision of molding equipment and molds is high, but the shrinkage rate of molding raw materials is large, it is difficult to guarantee the size of plastic parts. Generally speaking, the greater the shrinkage of the molding material, the more difficult it is to ensure the size of the plastic part.
3. Mold failure; the structural design and manufacturing accuracy of the mold directly affect the size of the plastic part. During the molding process, if the mold rigidity is insufficient or the molding pressure of the cavity is too high, the mold will be deformed, and the molded dimension of the plastic part will be unstable.
4. Equipment failure may easily lead to unstable dimensions of plastic parts.
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