Nitriding Screw for Rubber Extruder Rubber Sheet Processing Machine

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

---

>> FAW J6 J5 truck parts 1003016-36FY injector copper sleeve Hasing
>> sell 16inch hydraulic Casing puller 16”（406MM） Used for Water Well Drilling Ming Exploration Geotechnical and core drilling
>> OEM/ODM Aluminium Heatsink with Thermal Pad Push Pin Heatsink
>> 75% Alcohol Isopropanol Wet Medical Cleaning Wipe Sterilizing Antibacterial Disinfection Disposable Wet Wipe Surface Surgical Detergent Wipe
>> Marshmallow and Candy Floss Extruder Making Machine Cotton Candy Machine
>> Starmatrix Standard Curved Poly Bristle Wall Brush for Swimming Pool
>> Kf127RF87 Flange Mounted Combined Helical Bevel Gear Reducer
>> wholesale real nappa cow genuine leather wallet for men pure top grain skin slim smart new style custom fashion coiun pokat
>> trash can loader garbage truck
>> Long Honeycomb Paper Core Cross-Cutting Sheeter Knife Blade Cardboard Cutter
>> Shanghai Xiangbao XB-AT551-09 Dual Hydraulic Super Silent Paper Cutter
>> Stainless Steel Sanitary Food Grade Round Outward Non Pressure Round Tank Manway Manhole Cover with EPDM Gasket
>> Hot Selling Food Industry Conveyor Belt Bench Bag Check Weigher 2kg
>> IC698CMX016 VMIVME-5567-000 350-005567-000 | GE FANUC MODULE PLC DCS In Stock
>> High Speed Alcohol 4 Lanes Packing Machine Automatic Cotton Pads 4 Side Sealing Packing Machine
>> comfortable expanded metal garden bench and chair
>> 2024 Hot Sale Byd Tang EV 635km 4WD Flagship Electric SUV New Energy Vehicles From China Supplier Electric Car Ued Car
>> Tyre changer with help arms
>> High Brightness 7-30W Osram Chip Recessed Mounted Ceiling Anti-Glare LED COB Spotlight
>> Sinobi Brand Fashion Woman Watch Top Luxury Female Quartz Watch S9854G Alloy Case Pink Starry Sky Watches