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Conical twin Screw Barrel

产品介绍:



  • Mechanical Properties
Base Material 1) 38CrMoAlA (JIS SACM645) 2) Cr12MOV (JIS SKD – 11)
3) 4Cr5MoSiV1 (JIS SKD – 61) 4) 42CrMo (AISI 4140)
Solution List Plan A (HRC 56-58, 8-12 months)
38CrMoAlA + thermo refining+nitride 96 hours+ Fine polishing
Plan B (HRC 58-62, 12-18 months)
42CrMo/38CrMoALA + thermo refining+Hvof spraying+ Nitriding 96 hours+Fine polishing
Plan C (HRC 62-65, 24 months)
SKD61+Queching+ Harden inside process+Nitriding
96hours+Fine polishing
Nitrided layer depth 0.5 – 0.8mm
Bimetallic layer depth 0.8 – 3mm
Surface Hardness HRC 58 – 65
Surface Roughness Ra0.4
Chromed layer depth 0.05 – 0.10mm
Chromed Hardness ≥HV 950
Screw Straightness 0.015mm
Screw Diameter Φ35/35 –Φ92/188
Surface treatment Bimetallic spraying & Centrifugal casting
Abrasiveness   Low Moderate High
Screw Nitrided Bimetallic spraying Tungsten coated
Barrel Nitrided Bimetallic Bimetallic

 

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