In the extrusion molding process, the raw materials are first heated to a molten state, and then compressed and transported to the mold through screws. The size and shape of the mold determine the shape of the final product. After cooling inside the mold, the raw materials solidify and form, and the final product is taken out of the mold to obtain the desired product.
Extrusion molding is widely used in industrial production, especially in the field of plastic processing. Plastic products such as plastic pipes, sheets, profiles, etc. mostly use extrusion molding technology. In addition, extrusion molding is also applied in the processing of materials such as rubber and metal. Extrusion molding is favored by many manufacturers due to its simple process, low equipment investment, and high production efficiency.
How to deal with the thermal deformation of materials during the extrusion molding process in Dalian?
Control the temperature of the extruder: The temperature of the extruder has a direct impact on thermal deformation. During the extrusion molding process, controlling the temperature of the extruder can effectively reduce the thermal deformation of the material. Normally, the temperature of the extruder should be controlled according to different types of materials and extrusion process requirements to ensure that the material can be extruded at an appropriate temperature.
Optimizing extrusion mold design: The design of extrusion molds also has an important impact on the thermal deformation of materials. By optimizing the design of extrusion molds, thermal deformation problems during the extrusion molding process can be reduced. For example, increasing the cooling system of the mold, improving the strength and stiffness of the mold, and reducing the extrusion pressure during the extrusion process can effectively reduce the thermal deformation of the material.
Adjusting extrusion speed and pressure: During the extrusion molding process, the thermal deformation of the material can be effectively controlled by adjusting the extrusion speed and pressure. In general, lower extrusion speed and appropriate extrusion pressure can help reduce the thermal deformation of materials. At the same time, attention should also be paid to maintaining the stability of extrusion speed and pressure, to avoid the problem of material thermal deformation caused by being too fast or too slow.
Using appropriate materials: Choosing the right extrusion material is also an important factor in reducing thermal deformation issues. In the extrusion molding process, suitable materials should be selected according to the needs of the product to ensure that the product can maintain stable shape and size during high-temperature extrusion. At the same time, attention should also be paid to the melt fluidity and thermal stability of the material to avoid thermal deformation problems caused by poor material performance.
The principle of extrusion molding is to use an extruder to inject heated and melted raw materials into a mold, forming the desired shape in the mold, and then solidifying it through cooling. This method is usually applicable to the processing of materials such as plastic, rubber, and metal, and can produce products of various shapes and sizes, such as pipes, plates, profiles, etc.
The process flow of extrusion molding mainly includes steps such as raw material batching, heating, extrusion, forming, cooling, and cutting. Firstly, the ingredients of the raw materials are determined, and the types and proportions of the raw materials are determined based on the requirements of the product. Then heat the raw materials to an appropriate temperature for extrusion molding. Next is extrusion, where the heated raw materials are extruded into shape through screws. The formed product needs to be cooled to cure and maintain its shape. Next is cutting, cutting the product into shape according to the required length.
