Shanghai Bei Yang Plastic Machinery Limited company CO.,LTD.
We always adhere to the sustainable development of quality first, energy saving and emission reduction, automation and technicalization.
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Plastic extrusion conical twin screw barrel Alloy hardness HRC55-62
Material of screw:
| raw Material | The finished product processing equirements |
| 38CrMoAIA,SACM645,42CrMo | Nitriding treatment |
| 42CrMo,AISI4140 | Hard chrome coated layer |
| 4Cr5MoSiV1,SKD-61,SKD-11 | Spraying bimetal alloy layer and nitriding treatment |
| HPM38,SI36,SUS440,9Cr18MoV | High frequency quenching |
| GHII3 | Nature hard after high temperature |
Conical twin screw and barrel:
Specification:Min φ35/77;Max:φ92/188.
Raw material tempering hardness:HB≥280
Nitriding Surface hardness:HV≥900
Nitriding depth:0.6-0.8mm
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