Rubber Screw Barrel

Product Introduction:

Rubber extruder, as a basic equipment in the rubber industry, is one of the key equipment that affects the quality of products, and plays a very important role in the production process of tires and rubber products. The development of rubber extruder has experienced plunger extruder, screw type hot feed extruder, common cold feed extruder, main and auxiliary thread cold feed extruder, cold feed exhaust extruder, pin cold feed extruder, composite extruder and other stages.

Our rubber machine screw barrel series products choose 38CrMoALA(JIS SACM645), 42CrMo(JIS SCM440), 9Cr18MoV, CW6Mo5Cr4V2 and other materials, Heat treatment uses nitriding treatment, electroplating hard chromium layer, high frequency quenching, spraying corrosion resistant, wear resistant bimetallic layer, vacuum quenching and other methods. Our company adopts high NITride alloy screw and barrel, which has the advantages of good plasticization effect, more uniform mixing, compact extruded finished products, high wear resistance, corrosion resistance and long service life.

Technical parameters:

Screw types: pin screw barrel, cold and hot feeding screw barrel

Pin screw barrel specifications: φ75mm-φ200mm

Cold and hot feeding screw specifications: φ65mm-φ650mm

Inner hole: Ф14-Φ300 X 8000mm

Aspect ratio: L/D=8~20

Surface roughness: Ra0.4μm

Nitride surface hardness > 1000H

Depth of nitride layer: 0.5-0.8mm

Nitriding hardness: HRC950-1020

Nitride brittleness: ≤ grade 2

Straightness of screw: 0.015mm

Chrome layer thickness: 0.05~0.10mm

Alloy depth: 0.8~2.5mm

Double alloy hardness: HRC56° ~65°(alloy using nickel-based alloy)

Note: The above technical indicators are not fixed, we can customize for you according to customer’s requirements.

Scope of application:

Widely used in all kinds of rubber and plastic raw materials, such as: PE, PP, PVC, PS, ABS, PA, POM, PC, PSV, PTFE, PVR, PR, UP, PEC, PF, VF, MP, PMMA, PET, PBT, PPS, MPPO, PI, LCP, etc. Rubber machine, rubber machinery; Tires, shoes, wires and cables, pipes, seals, etc. EPDM, silicone and other rubber sealing strips, building doors and windows, automobile doors and windows, medical equipment and other fields.