How to perform maintenance and care on Screw Barrel for Extrusion of Blow Molding?

During the maintenance and upkeep of the Screw Barrel for Extrusion of Blow Molding, we must pay attention to a variety of problems that may cause the equipment to degrade, including wear, blockage, and other operational malfunctions. As a manufacturer, we provide a detailed range of maintenance recommendations and solutions to ensure your Screw Barrel maintains consistent performance over the long term.

Wear and tear is a common problem with Screw Barrel use. Since the screw and barrel are in direct contact with the high-temperature and high-pressure plastic melt, they experience significant wear. To reduce wear and tear, we recommend regularly checking the working condition of the screw and barrel, especially after prolonged use. By inspecting the spiral groove of the screw and the inner wall of the barrel, signs of wear can be found, such as surface scratches, pits or deformations. For minor wear, it can be repaired by fine grinding or polishing, while for severe wear, the screw or barrel may need to be replaced. We also recommend using wear-resistant materials and surface treatments, such as nitriding or chromium plating, to extend the service life of the screw and barrel.

Clogging is another common problem, especially when working with plastic materials that are highly viscous or contain fillers. To prevent clogging, we recommend regular cleaning of residues inside the screw and barrel. Using special cleaning tools and solvents, plastic residues and deposits can be effectively removed and the equipment kept smooth. At the same time, check the feeding system of the barrel and screw to ensure that it is not blocked by foreign objects or blockages, so as to ensure that the plastic melt can flow smoothly.

Performance degradation often manifests itself as reduced production efficiency, changes in melt quality, or an increase in product defects. This can be caused by a variety of factors, including wear on the screw, uneven heat treatment, or design mismatch. To combat these issues, we recommend regular performance checks that include measurements of screw rotation speed, temperature distribution, and melt flow characteristics. Through these inspections, potential problems can be identified and adjustments or repairs can be made in a timely manner. For example, if the melt temperature is found to be uneven, the heating system may need to be inspected or heat treatment adjustments made.

During routine maintenance, it is also crucial to ensure that your Screw Barrel’s lubrication system is working properly. Lubrication of the screw can reduce friction and wear and improve operating efficiency. Using the right lubricant, and regularly checking and replacing the lubricant can effectively keep the equipment running smoothly.