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Compression Rubber Mold
Compression molding is one of the most widely used methods in the production of various rubber products. In this method, the rubber material is placed in a mold and shaped by pressure. This article describes the steps of rubber molding using the compression method.
Advantages of Compression Molding
Compression molding of rubber is one of the most widely used and economical methods in the production of various rubber products. Some of the advantages of this method are as follows:
Ability to produce a variety of products : This method easily provides the ability to produce a variety of rubber products. By changing the molds and rubber materials used, products of different shapes and sizes can be produced.
High quality : Compression molding of rubber results in better shaping and higher quality products due to the high pressure applied to the rubber material in this method.
Ability to control temperature and pressure : In this method, temperature and pressure can be controlled, allowing the manufacturer to optimize the production process in the best possible way and improve product quality.
Rubber compression molding is used in many industries such as automotive, electronics, construction, and medical.
As a result, considering the advantages mentioned, rubber compression molding is one of the most important and widely used methods in the rubber products manufacturing industry.
Rubber compression molding process steps
- Preparing rubber materials and cutting them to the appropriate size for the mold.
- Placing materials in an open mold.
- Closing the mold and applying certain pressure and heat.
- Holding under pressure until the piece takes its final shape.
- Opening the mold and removing the final piece.
Common problems in compression format
- Air bubbles or surface defects (Voids / Surface Defects) : Due to uneven distribution of material.
- Excess Flashing : Caused by excessive pressure or improper mold design.
- Incomplete Filling : Usually occurs with reduced temperature or incorrect pressing time.
These problems can be reduced by carefully designing the mold and controlling pressure and temperature parameters.
Compression molding applications
- Automotive industry : Production of gaskets, shock absorbers, O-rings, and large rubber parts.
- Electronics industries : Production of insulating and heat-resistant parts.
- Household and industrial industries : Production of rubber parts in household equipment, machinery and tools.
- Medical industries : Production of durable and shape-fixed parts for medical equipment.
The difference between compression molding and injection molding
- Mold cost : Compression is cheaper, injection is more expensive but suitable for high-volume runs.
- Production speed : Injection molding is faster, compression molding is better for medium and large-volume production.
- Part accuracy : Injection molding has higher accuracy, compression molding is acceptable for large and complex parts.
Conclusion
Compression molding is a great way to produce large, complex, and durable parts at a lower cost. This technology allows various industries to produce parts with reliable durability and quality, making it an ideal choice for medium to high volume production.