Application
PVC, POM, PP, PE, PPS, ABS,PC, PA, PMMA, PBT
Base materials:
1)38CrMoAlA (JIS SACM645) 2)42CrMo (AISI 4140)
3)4Cr5MoSi V1 (JIS SKD-61) 4)DC53 (JIS G4404)
5)Cr12MoV (SKD11)
Bimetallic alloy materials
1)Ni-based alloy/Deloro alloy 2)Fe-based alloy
3)Co-based alloy 4)NiCo-based alloy
5)Tungsten carbide/Wolfram carbide
Processing technics
Heat treatment
High-frequency quenching
Nitriding treatment
Bimetallic alloy welding
Bimetallic alloy centrifugal casting
Hard-chrome electroplating
Technical parameters
Nitriding layer depth: 0.5-0.8mm
Nitrided Hardness: 900-1000HV (HRC 55-65)
Nitrided brittleness: Less than grade 1
Surface roughness: Ra 0.4
Linearity of screw: 0.015mm
Bimetallic layer depth: 3 mm
Bimetallic layer hardness: HRC 55-70
Hard-chrome plating hardness after nitriding: ≥950HV
Chrome-plating layer depth: 0.03-0.1mm
Screw Production Process
Customer Order--- Material Procurement---Normalizing/Homegenizing---Dring---Rough Turing---Rough Thread Rooling---Alignment and Stress Release---Fine Rough Rolling---Mixing/Stirring Zone---Alignment Polishing---Grinding---QC---Iron Nitrogenizing(120 hour)---Alignment/Polishing---Polishing/Grinding---Cryogenic treatment---PVD plating---O.D Grinding---FQC---Packing and Shipping
Our Advantages
1. Over 20 years experiences of manufacturing and designing screw
2. Professional design and R&D team
3. Customized service for each customer
4. Fast response to each inquiry
5. In-time after sale service
WELCOME TO INQUIRE US!