Screw and Barrel for Rubber Products Extruder Machine

• After-sales Service: 24hours Within 7days
• Warranty: 1year
• Certification: ISO
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: 250mm screw
• Condition: New
• Customized: Customized
• Structure: Horizontal
• 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
• Transport Package: Woodenbox
• Specification: 300*300*5640mm
• Trademark: DONGXIANG
• Origin: China
• HS Code: 84779000
• Production Capacity: 1300
• Package Size: 300.00cm * 300.00cm * 5640.00cm
• Package Gross Weight: 2300.000kg

Product Description

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