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Conical twin-screw & barrel
Conical twin-screw & barrel

Conical twin-screw & barrel

Base material:

38CrMoAIA(JIS SACM645)

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Conical twin-screw & barrel Details

Base material: 38CrMoAIA(JIS SACM645)
Material composition analysis:
C: 0.35~0.42 Si: 0.20~0.45 Mn: 0.30~0.60
S:≤0.035 P:≤0.035 Cr:1.35~1.65
Al: 0.70~1.10 Ni:≤0.030 Cu:≤0.030 Mo:0.15~0.25
Treatment process:
Hardening and tempering treatment
Nitrogen treatment
Alloy spray welding
Technical parameters:
Tempering hardness:HB260-290
Nitration case thickness:0.50mm-0.80mm
Nitriding hardness:900-1000HV
Nitriding brittleness: ≤ 1
Surface roughness:Ra0.32
Screw straightness:0.015mm
Alloy thickness:2-3mm
Alloy hardness:HRC58-65
Label:Twin-screw,Barrel,Barrel screw

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