Parallel double barrel screw specificationsParallel double barrel screw specifications
Parallel twin screw barrel specifications: ø45/2~ø200/2
Screw structure and compression ratio can be designed according to different products and different accessories.
Parallel twin barrel screw technical parameters:
quenched and tempered hardness: hb280-320
Straightness of screw: 0.015mm
Nitride hardness: hv950-1100
After nitriding, the hardness of the chromium plating layer ≥900hv
Depth of nitride layer: 0.5~0.8mm
Chrome plating thickness: 0.025~0.10mm
Nitriding brittleness: Grade two double alloy hardness: hrc50-65
Surface roughness: ≤ra0.4 Double alloy depth: 0.8~2.0mm
Parallel twin screw barrel material and process:
Premium 38 crmoaia (41craimo7) skd61 (h13)
High-quality duplex stainless steel gr12mov
42crmo, high-quality powder metallurgy materials
40cr cold and hot spray hard metal process
Zn 3# steel advanced nitriding process
Corrosion-resistant and wear-resistant bimetallic spraying process.
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