Product Description
Pinned barrel, Cold-, hot- fed-extruder barrel and screw
The enterprise mainly produces cold-, hot-fed-extruder barrels and screws. Rubber-pinned-cold-fed screws and barrels are widely usde in txtruding all typesof rubber products and in supplying rubber er to calenders They can alsobe used extruding rubber tube rubber film inner tire,tire surface cover rubber of wire cable filtering rubber impurities and so on pin makes rubber machine-finishing more efficient and is a major component for high efficient and energy-saving equipments Our screws are innovated and have special geometric structure so they can completespecial difficult tasks like plasticizing mixing and extruding Barrel can also controltemperatures of each section ind ependently ordinary screw uses 38 CrMoAIA and is nitridinged on the surface so that it guarantees high distortion intensity and wear resistance The bimeatal barrel uses the special wear-resistance alloy by applying the centrifugal casting technolongy and its service life is higher than ordinary one
Standard
Diameter:φ20-φ300mm
Ratio of length to diameter:L/D=15-55
Materials
38CrMoAIA/SACM645/SKD11/SKD61/42CrMo
Duplex stainless Steels
GH3#
Power Metallurgy Raw Material
Cold/Thermal Spray Hard Metal Process
Advanced Nitriding Process
Corrosion&Abrasion Resistance Bimetal Spraying Process
Technical Index
| Product |
Screw&Barrel |
| Tempering hardness |
HB240-280 |
| Hardness of nitrogen treatment |
HV950-1000 |
| Depth of nitrogen layer |
0.55-0.70 |
| Nitride brittleness |
Less than grade 1 |
| Surface roughness |
Ra 0.4 |
| Screw straightness |
0.015mm |
| Hardness after nitride |
≥900HV |
| Chromium-plating depth |
0.05-0.10mm |
| Alloy hardness |
HRC55-62 |
| Alloy Depth |
1.5-2.0mm |
Production Process as below:
01 Blanking-02 Quenching and Tempering-03 RoughTurning-04 Detecting-05 Semi Finishing Turning-06 Aging Treatment-07 Rough Grinding
08 Crossed Thread-09 Milling Cutter Roove-10 Turning Thread Groove-11 Tempering-12 Polishing Thread Groove-13 Fine Gringding-14 Milling Keyway-15 Fitter-16 Detecting-17 Nitriding or Bimetallic Treatment-18 Cut Off Process Allowance-19 Polishing Thread Groove-20 Detecting
Our Service
Warranty and service: 1years
Our Advantages
1)Excellent raw materials
2)Good customer service
3)Rapid delivery
4)Reasonable price
5)Production quickly
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