Barrel Single Screw

Barrel Single Screw

We manufacture barrels up to Dia 300mm and 5.25 meters long.

Barrel is manufactured from nitro alloy (EN-41B) material which is available in Indian as well as Imported make. The material is toughened in raw condition that is S' or T' condition up to 30/32 RC which gives hardness to the material. Then after machining to be done as per required dimension of outer layer and keep 1.0 mm on outer diameter and 1.0 mm on inner diameter. There are stresses development while machining that is to be relieved known as stress relieving, the base hardness is reduced by 2 RC maximum.

After toughening final machining to be done to get required dimension and do honning in inner diameter for highly surface finish which is required free flow of the polymer and do the nitride hardening to get surface hardness up to 64/66 RC by gas nitriding process and case depth up to 0.5/0.6 mm deep to run longer time.