The screw component is one of the most important precision parts of a corrugated pipe production line. It directly affects material plasticization performance, extrusion stability, and the final quality of pipe products. During long-term continuous operation, the screw may suffer from carbon buildup, wear, sticking, and corrosion. If maintenance is not performed properly, problems such as uneven pipe wall thickness, surface defects, reduced production capacity, and frequent equipment shutdowns may occur.A systematic screw maintenance program is essential for plastic pipe manufacturers to reduce operating costs, improve production efficiency, and ensure stable mass production.

Standardized Daily Maintenance During Production

Follow Correct Start-up and Shutdown Procedures

The barrel must be preheated according to the specified heating curve before starting the corrugated pipe production machine. Starting the equipment at a low temperature should be avoided because poor material plasticization can increase the load on the screw and accelerate wear.During production, the machine should never run without material or operate under empty conditions. A stable material supply system, such as an automatic centralized feeding system, can help prevent dry friction between the screw and barrel, effectively extending the service life of screw components.

Prevent Impurities from Entering Raw Materials

Metal particles and hard impurities in raw materials are major causes of screw damage. When using recycled materials, a plastic recycling machine should be used for purification and filtration to improve material quality.Strict raw material screening can prevent foreign objects from entering the barrel, avoiding scratches, deformation, and excessive wear on the screw surface.

Cleaning and Material Residue Protection During Shutdown

Keep Proper Temperature During Short-term Shutdown

For short-term machine stops, the barrel temperature should be maintained at an appropriate level instead of cooling down completely. This prevents the material inside the barrel from solidifying and forming blocks.Proper temperature control helps avoid screw blockage during restart and reduces the risk of mechanical damage, ensuring stable extrusion performance.

Remove Residual Materials During Long-term Shutdown

When the production line is stopped for a long period, special cleaning materials should be used to replace the remaining materials inside the barrel. This process can effectively remove aged resin and carbon deposits from the screw surface.During cleaning, hard tools should never be used to scrape the screw, as they may damage the precision surface and affect future plasticizing and extrusion performance.

Regular Inspection and Wear Protection

Manufacturers should establish a regular screw inspection system to check screw diameter, thread wear condition, and surface corrosion.For minor wear, professional polishing and repair methods can restore the screw performance. However, when wear exceeds the allowable range, replacement should be carried out in time to avoid affecting product quality.At the same time, bearings and sealing components should also be inspected regularly. Poor component conditions may cause screw eccentric rotation, resulting in unstable extrusion pressure and inaccurate pipe dimensions.

Anti-rust Protection for Long-term Storage

Before long-term storage, the screw should be completely cleaned and coated with special protective oil. Proper sealing and packaging are also necessary to prevent moisture exposure and oxidation.When restarting the equipment, the protective oil must be completely removed. The machine should then be preheated and tested under no-load operation. Production can only begin after confirming that the equipment operates normally.

Conclusion

Scientific and regular maintenance of screw components can effectively reduce failures in corrugated pipe production lines, lower maintenance costs, and improve production stability. For plastic pipe manufacturers, proper screw maintenance is an important part of ensuring product quality, extrusion accuracy, and long-term equipment performance.

FAQ

Q1: How should carbon deposits on the screw of a corrugated pipe production line be cleaned?

A: Special cleaning materials should be used to replace the remaining material and remove carbon deposits safely. Hard tools or aggressive grinding methods should be avoided to prevent damage to the screw surface.

Q2: What problems can screw idle running cause?

A: Running the screw without material may cause dry friction, overheating, and surface wear. It can shorten screw service life and lead to unstable extrusion performance.

Q3: Does using recycled materials accelerate screw wear?

A: Recycled materials containing excessive impurities can increase screw wear. Proper filtration and purification are necessary to control material quality and protect screw components.

Q4: Does a slightly worn screw need immediate replacement?

A: Minor wear can usually be repaired through professional polishing. Replacement is only necessary when wear exceeds the acceptable range or affects extrusion accuracy and product quality.

Q5: How can the service life of corrugated pipe production line screws be extended?

A: Correct start-up and shutdown procedures, stable material feeding, strict raw material control, regular cleaning, inspection, and anti-rust protection can significantly extend screw service life.

Why Choose Benk Machinery?

From individual machines to complete production lines, Benk Machinery provides reliable and customized plastic processing
solutions. Since 2012, we have focused on plastic extrusion, nergy-saving plastic recycling machine, and automated compounding centralized feeding systems, helping customers build efficient and cost-effective production facilities.

Complete Extrusion Solutions: Professional expertise in plastic pipe, profile, sheet, plate and board extrusion lines.
Customized Project Solutions: Equipment and production lines can be configured according to your materials, products, capacity and factory requirements.
Stable & Cost-Effective Equipment: Reliable machine performance, efficient production and optimized energy consumption help reduce operating costs.
Professional Service: From technical consultation and production to installation, commissioning and after-sales support, our team provides complete project assistance.

Contact Benk Machinery:

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