Detailed introduction

04

2021

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03

Introduction to the method of reducing wear of the barrel screw


barrel screwIn order to reduce wear and tear, the general manufacturers have taken corresponding measures in the design and manufacturing process. through continuous improvement,barrel screwThe design can adapt to different, newer and higher requirements. In order to reduce the wear of the barrel screw, we can take some measures to reducebarrel screwof wear.

 

barrel screwWays to reduce wear:

1.Filler: In order to reduce the production cost of pipes, profiles and aggregates, more and more calcium carbonate is used in the formula. The wear caused by calcium carbonate is mainly abrasive wear, especially when the amount of additives is large, calcium carbonate The content and qualitybarrel screwThe degree of wear has a great influence. Unreasonable amount of lubricant in the formulation (excessive external lubricant, such as organic wax or stearic acid) will slow down the plasticization process and accelerate the wear process. Care should be taken to minimize damage to the equipment.

2.Recycled material processing: For the guided rotating twin screw, the material is transported in the axial direction similar to a pair of calender rollers (calender effect).barrel screwIt is a common phenomenon that it is subjected to upward and outward forces, and the barrel screw is pushed onto the barrel, causing the screw and barrel to wear. However, it is more prominent when handling materials, and the above forces can be considered to affectbarrel screwThe main factor of the degree of wear, the larger the particle, the more serious the wear, so when dealing with recycled materials, the particle size of recycled materials should be as small as possible.

3.HardPVCProcessing of the particles: The particle size of the particles is substantially the same as that of the regenerated particles, the main difference between the two being that the granular material is more uniform in shape and size than the regenerated material, and the "hard particle effect" brought about by the similar density and geometry is substantially the same. Therefore, the particle size of the processed aggregate should also be as small as possible.