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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