Rubber Extruder, Phase : Single Phase

Screw – Alloy steel of EN-24 with flights cut on thread milling machine duly centrally bored for water circulation. Flights heat treated hardened nitrided & ground with hardness approx. 65 to 70 RC. The screw is machined in Right Hand profile on a special thread milling machine from alloy steel EN 41 B and heat treated hardened nitrided to approx. 70 RC. The working length of screw is 5 X Diameter (LD Ratio 5) in case of Hot Feed Extruders and in case of Cold Feed Extruders, the ratio varies from 12 to 16 and caries reverse threads at rear end to prevent the material flow in backward direction.