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What should be paid attention to when using twin screw extrusion granulator?

by:TENGDA     2022-10-13

In general mode, the water and gas systems of the twin-screw extruder granulator should not communicate with each other. The water pipe joints of the forming die of the extrusion die, the refrigeration system and the vacuum system of the forming die should be normal and not leak. Vacuum pipe joints should be clearly marked and should not interfere with the connection of the pipeline.

The half technical standard and mode of the extrusion die of the twin-screw extruder granulator are generally made of stainless steel plate and other anti-corrosion materials, especially when the extruded material is modified polyvinyl chloride. And quenched and tempered to above HRC24 to ensure a certain service life. There should be no defects such as bumps, scratches, burrs, attachments and rust. The working surface of die, shaping die and its parts should be smooth. Abrupt and stagnant regions of cross-section are avoided as much as possible. The die runner system should be gentle along the melt flow direction. The loading and unloading repeatability error of the corresponding positions between the templates between the molds should not be greater than 0.03mm. The welding surfaces and the splicing of the extrusion die head should be in good tightness, and there should be reliable positioning between the templates.

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