Key points for operating PEPP double-wall corrugated pipe extrusion equipment

PEPP double-wall corrugated pipe extrusion equipment is mainly used to produce double-wall corrugated pipes. This type of pipe is widely used in drainage, sewage, communications, water supply and other fields. When operating PEPP double-wall corrugated pipe extrusion equipment, pay attention to the following points:

1. Equipment commissioning and preparation

Check the equipment condition: Ensure that all electrical, mechanical components and cooling systems are operating normally. Check whether the heating, cooling, transmission system and other components are in good condition.

Material preparation: Prepare suitable raw materials according to product requirements to ensure that the quality of the raw materials meets the standards and avoid moisture or contamination.

Mold cleaning: Check the cleanliness of the mold and cooling system to avoid contamination affecting product quality.

2. Temperature control

Barrel heating temperature: Adjust the temperature control system of the barrel according to the raw materials used to ensure that the temperature range is appropriate. It is usually divided into multiple heating zones, and the temperature of each zone gradually increases.

Extruder temperature control: Ensure that the temperature control of the screw, mold and supporting equipment is accurate to avoid affecting fluidity and product quality.

Corrugated pipe mold temperature: The temperature of the double-wall corrugated pipe mold is more critical. Too high or too low will affect the corrugation effect. The temperature control system needs to be accurately adjusted.

3. Material extrusion process

Screw speed: adjust the screw speed of the extruder according to the characteristics of the raw materials and production requirements to ensure uniform melting of the materials.

Feed quantity control: ensure constant feed quantity through the feed system and host load monitoring to avoid insufficient or excessive feed.

Plasticization state control: ensure that the material in the screw is fully plasticized to avoid material jamming or uneven flow.

4. Double-wall corrugated pipe molding

Mold and cooling control: The molding of double-wall corrugated pipes requires high pressure and temperature of the mold. The temperature of the inner wall of the mold should be kept in an appropriate range to ensure the uniformity of the corrugation.

Inner and outer wall material ratio control: PEPP double-wall corrugated pipe adopts an inner and outer two-layer structure. The material ratio of the inner and outer walls should be uniform. The uniformity of the two layers of materials is ensured by appropriate co-extrusion technology.

Cooling water flow: The cooling system should ensure uniform water flow, adjust the water temperature and flow in time to ensure the stability of the pipe size.

5. Traction and sizing control

Traction speed: The traction speed should match the extrusion speed to prevent the pipe from breaking or uneven stretching. The pulling speed usually needs to be adjusted according to the actual pipe specifications.

Adjustment of the sizing system: The sizing device needs to be adjusted according to the pipe size to ensure that the outer diameter and wall thickness of the pipe are uniform.

6. Product quality control

Dimension monitoring: The outer diameter and wall thickness of the pipe are monitored in real time through the dimension detection device to ensure that the product meets the specifications.

Corrugation quality: The depth and uniformity of the corrugation directly affect the product quality. The formation process of the corrugation must be stable to avoid defects.

Tensile strength test: Regularly test the mechanical properties of the pipe such as tensile strength and compression to ensure that the strength of the product meets the use requirements.

7. Safety and environmental protection

Equipment safety inspection: Operators should regularly check the electrical and mechanical components of the equipment to ensure that there are no abnormal conditions to avoid accidents.

Exhaust and waste disposal: Ensure that the exhaust system of the equipment is working properly to avoid leakage of harmful gases. Waste needs to be properly handled in accordance with environmental protection requirements.

8. Daily maintenance

Regular cleaning and maintenance: Keep the equipment clean and regularly check the wear of the screw, mold and other important components. Lubricate and replace wearing parts in time.

Check the electrical system: Regularly check the operating status of electrical components and control systems to ensure long-term stable operation of the equipment.

In summary, when operating the PEPP double-wall corrugated pipe extrusion equipment, in addition to paying attention to equipment commissioning, temperature control, material feeding, traction and cooling, special attention should be paid to product quality and precise control during the production process. Only by ensuring the stability and accuracy of each link can production efficiency be improved and the quality of the final product can be guaranteed to meet standard requirements.