The Bimetallic Screw Barrel is made of 88wc/12c0.Crc/25Nicr.XaloY108 material. The quality of the screw barrel is depending on the quenching process. This screw barrel is suitable for glass fiber, plastic, PPA, PPS, PO, ABS, LCP, magnetic powder, Bakelite, fireproof, and special engineering plastics.
This screw barrel fixes the problem of a teardown of the chrome-plated layer which is often falling off. The screw barrel provides full environmental protection to the products.
Where is Bimetallic Screw Barrel used?
Injection molding machine, extrusion machine, Bakelite machinery
It has ᵩ20 mm to ᵩ250mm diameter processing range and has an effective length of 8000 mm
The metal composition is 88wc/12c0.Crc/25Nicr.XaloY108 and nitriding hardness is HRC59o – 65o
What are the benefits of nitriding material injection molding machine screw barrel?
The nitriding provides high hardness and resistance against wear to the surface of the screw barrel. For instance, the hardness of the surface of the screw barrel made of 38CrMoAIA can reach HV950 or above after nitriding. This is equivalent to HRC= 55o – 58o. Also, its high strength and wear resistance is maintained at 350 to 450 degree Celsius.
This can also enhance the fatigue resistance with the formation of higher compressive strength in the nitride layer. The screw barrel with nitriding has a higher fatigue limit and lower notch sensitivity with an alternating load. With this process, the fatigue limit can increase by 30 percent.
The corrosion resistance of the screw is improved and nitriding provides a dense layer that gives chemical stability to the surface of the screw. This is a cost-efficient and simple nitriding technique. The processes like galvanizing, bluing, and other chemical coatings are replaced by nitriding. The nitriding reduces the stickiness of screw barrels. The machine with nitriding can work for longer without any major problems.
