A wood plastic extruder is a piece of equipment specially used to produce wood plastic composite materials. It mixes, heats and extrudes raw materials such as wood powder and plastic to obtain composite materials with the dual advantages of wood and plastic. This material not only has the environmentally friendly and renewable characteristics of wood, but also has the durability and easy processing characteristics of plastic. It is widely used in outdoor furniture, building materials, garden landscaping and other fields.
In a wood-plastic extruder, the screw is one of the key components. Its material directly affects the production efficiency and product quality of wood-plastic composite materials. The screw needs to withstand high-temperature and high-pressure working environments, and also needs to be wear-resistant and corrosion-resistant to ensure the continuity and stability of production.
1. Stainless steel
Stainless steel is a common screw material with good corrosion resistance and wear resistance. It can withstand high-temperature and high-pressure working environments and is suitable for the production of wood-plastic composite materials with higher material requirements. However, stainless steel has poor thermal conductivity, which may cause thermal expansion of the screw during operation, affecting production efficiency.
2. Alloy steel
Alloy steel has higher strength and wear resistance and is suitable for the production of wood-plastic composite materials that require higher screw performance. It can maintain stable performance in harsher working environments and improve production efficiency and product quality. But the cost of alloy steel is also relatively high.
3. Nitride steel
Nitrided steel is a type of steel whose surface hardness is improved through nitriding treatment. It has good wear resistance and corrosion resistance, and can maintain stable performance in high temperature and high pressure working environments. At the same time, nitrided steel also has good thermal conductivity, which can reduce the thermal expansion of the screw during operation.
Choosing the appropriate screw material needs to be based on specific production needs and cost considerations. Generally speaking, for the production of wood-plastic composite materials with higher material requirements, you can choose screws made of stainless steel or alloy steel; for the production of products with average screw performance requirements, you can choose screws made of nitrided steel or ordinary steel.
In addition, factors such as wear resistance, corrosion resistance, and thermal conductivity need to be considered when selecting screw materials to ensure that the screw can maintain stable performance in high-temperature and high-pressure working environments and improve production efficiency and product quality.
The screw material of the wood-plastic extruder is one of the key factors affecting the production of wood-plastic composite materials. When selecting the screw material, you need to consider specific production needs and costs, as well as factors such as wear resistance, corrosion resistance, and thermal conductivity. By selecting the appropriate screw material, the production efficiency and product quality of wood-plastic composite materials can be improved, and the sustainable development of the wood-plastic industry can be promoted.
Yongte WPC extruder machine equip with high quality conical double screw made from bimetallic material, and the barrel made with SKD coated inside. so the screw and barrel of yongte wpc extruder can use for long time.
