Introduction of bimetallic screw production process The bimetallic screw and barrel bimetallic process is a more commonly used process combination product with excellent corrosion resistance and wear resistance in recent years. The HVOF high-speed spraying equipment is used to melt spray spray the surface of the screw to obtain a densely structured bimetallic Screw; the bimetallic barrel adopts
Routine maintenance of screw barrel of extruder Daily maintenance of screw barrel of extruder: 1. Never start the machine when the barrel screw has not reached the preset temperature. 2. Prevent metal fragments and debris from falling into the hopper. If processing recycled materials, a magnetic hopper should be added to prevent iron scraps from entering the barrel. 3. Make sure
What is the effect of excessive clearance between screw and barrel? Influence of excessive gap between screw and barrel: 1. The gap between the screw and the barrel is too large, and the flow rate of the molten material during extrusion is unstable, and the product surface is prone to horizontal wrinkles. 2. The gap is too large, the extrusion melt pressure is unstable, so that the c
What are the types of screw gaps of conical twin-screw extruders and what are their functions? In summary, there are the following four working gaps between the screw and barrel of the conical twin screw extruder: (1) The radial clearance between the end surface of the screw rib and the inner diameter circumference of the barrel. (2) The radial clearance between the end surface of the scr
Common problems Possible cause Solution There are bumps on the wall of the tube (like bubbles). The moisture of the material is too high. Properly increase the mixing temperature and extend the mixing time. Impurities mixed in the material Check the source of impurities and remove impurities Poor plasticization. Reduce external lubricant in an appropriate amount and increase plasticization.
The conical twin-screw extruder is the main equipment for producing plastic profiles. When the profile is produced, the twin screw rotates outward in the barrel in different directions. The size of the screw gap not only affects the plasticizing effect of the material, but also affects the quality of the product, sometimes causing machine failure, and even leading to scrapping of heart parts such
Conical twin screw extruder The conical twin screw extruder is an efficient mixing and extrusion equipment. The machine has the characteristics of small shear rate, difficult decomposition of materials, uniform plasticization and mixing, stable quality, high output, wide application range and long service life. Chinese name conical twin-screw extruder is used to modify various plastics with stab
The equipment for PVC profiles is too familiar to me, and requires a production line for mixers, mills, crushers and extrusions. The U-groove processing equipment made for foreign customers this time is also very intentional. Now because of the epidemic situation, there is no way to go out for installation and commissioning. Remote guidance is required, and the equipment is sent to the customer af
