.

conical twin screw barrel for extruder machine

General Specification: 35/76,45/90, 45/100, 50/105, 51/105, 55/110, 55/120, 58/124, 60/125, 65/120, 65/132, 68/143, 70/135, 70/140, 75/150, 80/143, 80/156, 92/188,95/191,105/191,100/200Material: Alloy-steel of high-quality 1. 38 CrMoAIA(JIS SACM645) 2. 42CrMo(AISI4140) 3. 9Cr18MoV 4. CW6Mo5Cr4V2 5. SKD61 Processes: 1.Heat-treatment 2.Nitriding treatment 3.Electroplate hard-chrome 4.High-frequency quenching 5.Spraying corrosion wear-resisting dual metal layers 6.Vacuum quenching Technical Parameters: 1. Nitride Depth: 0.5-0.8mm 2. Nitride Hardness: 950-1020HV 3. Surface Roughness: Ra≤0.4um 4. Screw Straightness: 0.015mm 5. Bimetallic Hardness: HRC55-62 6. Bimetallic Depth: 1.5-2.0mm


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