Technical Information
Main Base materials
1.38CrMoAlA (SACM645)
Main Alloy Materials
1. Ni-based alloy/Deloro alloy
Processing Technics
1. Heat treatment
Technical parameters
Nitriding layer depth: 0.5-0.8mm
2. Quenching
Nitrided hardness: 900-1000HV
3. Nitriding treatment
Bimetallic layer depth: 0.8-2 mm
4. Bimetallic alloy welding for screw
Bimetallic hardness: 57~65HRC
5. Bimetallic alloy centrifugal casting for barrel
Hard-chrome plating hardness after nitriding: ≥950HV
6. Hard-chrome electroplating
Chrome-plating layer depth:0.03-0.09mm
Linearity of screw: 0.015mm
Surface roughness: Ra 0.4
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