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Product Description
Material: 38CrMoAlA
Alloy (bimetal)
Technicl process
1. Heat treatment
2. Quenching
3. Nitriding treatment
4. Bimetallic alloy welding for screw
5. Bimetallic alloy centrifugal casting for barrel
6. Hard-chrome electroplating
Technical parameters
Nitriding layer depth:0.5-0.8mm
Nitrided hardness:900-1000HV
Bimetallic layer depth:3 mm
Bimetallic hardness:57~69HRC
Hard-chrome plating hardness after nitriding:≥950HV
Chrome-plating layer depth:0.03-0.09mm
Surface roughness:Ra 0.4
Linearity of screw:0.015mm
Advantages
Founded in 2004, 17+ Years Experience
Annual Production Capacity of 500 Sets
CE & ISO 9001 Certificates
100% Parts are Self-made
Competitive Price & Best Customer Service
Fast Delivery
12 months quality guarantee
Parameters
Model | Screw Diameter (mm) |
SJ-20 | 20 |
SJ-30 | 30 |
SJ-40 | 40 |
SJ-50 | 50 |
SJ-65 | 65 |
SJ-75 | 75 |
SJ-90 | 90 |
SJ-100 | 100 |
SJ-120 | 120 |
SJ-150 | 150 |
SJ-180 | 180 |
SJ-200 | 200 |
Accept custom-built orders.
