The bimetallic barrel for extruder twin screw is a kind of barrel spray welding a 2~3mm-thick alloy coat on the barrel inner wall which has excellent corrosion resistance, abrasion resistance and high working temperature. And its useful service life is greatly improved contrast to the common nitrided barrel. Bimetal has more obvious advantages when processing high calcium carbonate powder PVC mixture to enhance the abrasion life.
Conical Screw & Barrel for plastic extrusion machine | |
Screw Diameter : D35/D77,D45/D90,D50/D105,D55/D110,D60/D125,D65/D120, D65/D132,D70/D140,D75/150,D80/D143,D80/D156,D92/D188 | |
Application : WPC,sheet,pallets,pinch,pipe,profiles,soft pvc,pvc foam sheet,etc | |
Plastic processed : recyled PP PE ABS HDPE LHDPE | |
Technical Parameter | |
Nitride Case Depth | 0.5mm-0.8mm |
Nitride Hardness | 950-1020HV |
Nitride Brittleness | ≤Grade One |
Surface Roughness | Ra0.4um |
Screw Straightness | 0.015mm |
Alloy Hardness | HRC58-62 |
Alloy Depth | 0.5mm-0.8mm |
Chromium Coating Thickness | 0.025~0.10mm |
Material & Technologies | |
SKD61(H13) | Quality 38CrMoAIA (41CrAIMo7) |
Gr12MoV | Quality Duplex Stainless Steel |
42CrMo | Quality Powder Metallurgy Materials |
40Cr | Hard Metal Cold/Thermal Spraying Technology |
Zinc 3# Steel | Advanced Nitriding Technology |
Anti-corrosion and Wear-resisting Duplex Metal Spraying Technology | |
Technological Process | |
1.Rough Machining | 2.Quenching and Tempering |
3.Finish Machining | 4.Nitriding |
5 Sprey conating Bimetallic | 6.Screw polishing |
Material: Base material 38CrMoAlA, Welded inlay on the flight, prolong life of screw. Easy wearing parts of barrel feed inlet made from imported anti-wear alloy can be improvde abrasion performance
Commonly used material is 38crMoAIA(nitrogen treatment),it can be changed as per your requirements. According to different usage, the choose for alloy is different, some require for abrasion-resistant while some require for corrsion-resistant. For standard, we have Fe-based, Ni-based, W2C alloy,Tunsten alloy etc for choice.
Screw structure and compression ratio can be changed according to different products and output
Technological Process can be chosed acoodring to your requirements.
We can make any specification of extruder screw barrel and injection screw barrel for Haitian, Demag, Engle, Nigro bossi, arburg, NPM, BOY, Husky, Fanuc, billion, Sumitomo, Nippon Steel, Toshiba, Nissei, Mitsubishi and etc. We also can supply all types of screw and barrel according to your different requirements
