①The screw of the extruder should be made of alloy steel with small thermal deformation, wear resistance and corrosion resistance. Commonly used materials are 38CrMoAlA alloy steel or 40Cr steel, and repair parts can also be made of 45 steel.②The bla...
Read MoreReasons for screw damage1. The temperature of the raw material is low when plasticizing.2. The raw material is mixed with metal foreign matter or there are many impurities in the raw material.3. The screw idle time is too long.4. Unreasonable selecti...
Read MoreBarrel heating widely adopts resistance heating, and uses thermocouples to achieve segmented temperature control and side detection. Resistance heating is to use resistance to generate heat to heat the barrel, and then transfer the heat to the plasti...
Read More1. Surface cleaningBefore the screw spray welding, the remaining plastic attachments on the screw surface should be cleaned up. The cleaning method is to install the screw on the sprayer and rotate it, bake it with a neutral flame of a spray gun, and...
Read MoreThe flat double barrel rotates in the cylinder, and the working surfaces of the screw and the cylinder are gradually worn due to the friction between the material and the two. The diameter of the flat double barrel is reduced due to friction, and the...
Read MoreWhen the alloy screw is difficult to compress the material at the feed port, or when there is not enough adhesion along the length of the barrel to transport the material, the alloy screw will slip. In the pre-forming stage of the alloy screw, when t...
Read More1. Install the front and rear supports on the barrel and then put them on the main frame together with the conical double barrel screw. Do not install the large locking nut first. Shake the front support manual handle to move the barrel to the direct...
Read MoreMost of the wear of the conical twin barrel screw occurs in the high pressure region, especially in the transition section and the last few turns of the metering section. These areas are prone to wear because the high pressure can cause the conical t...
Read MoreCleaning method of conical twin barrel screw:1. After mixing the cleaning agent and cleaning materials in proportion, inject them into the end of the conical twin barrel screw.2. Use a brass brush to remove the resin deposit residue, or use a burner ...
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