Screw and Barrel for Anti-Dust Rubber Products Making Machine

• After-sales Service: 24hours Within 7days
• Warranty: 3-12months
• Certification: ISO
• Condition: New
• Customized: Customized
• Automatic Grade: Semiautomatic
• Model NO.: 60mm screw and barrel
• Structure: Vertical
• Tempering Hardness: Hb240 to 280
• Nitriding Hardness: Hv950-1000
• Bimetallic Hardness: HRC55 to 62
• Depth of Nitriding: 0.55-0.7mm
• Surface Roughness: Ra0.4
• Straightness: 0.015mm
• Chrome Plating: 0.05-0.1mm
• Depth Bimetallic: 1-3mm
• Transport Package: Woodenbox
• Specification: 75*75*1230mm
• Trademark: DONGXIANG
• Origin: Zhoushan
• HS Code: 84779000
• Production Capacity: 1000

Product Description

Company Introduction
We are specializing in producing screw and barrel for both pin-type cold-feed and hot-feed extruder. In the past 15 years, our company has risen to become one of most professional feed rubber screw and barrel producer in China with the most advanced technology.

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