Bimetallic Screw Barrel

	Grade A Wc-10 tungsten carbide alloy	Grade B Ni 20 Ni-based alloy	Grade C Fe -30 Fe-based alloy
Processing range :	Inner dia.: ∅16mm-∅450mm,effective length 9000mm	Inner dia: ∅16nm-∅450nm.effective length 9000mm	Inner dia. : ∅16mm-∅450m.effective length 9000mm
Processing technique:	Centnifugal casting ,allay layer reach 1.5mm-2mm one side, maxmumreach 3mm-6mm one side	Centrifugal casting, alloy layer reach 15mm-2mm one side,maxinumreach 3mm-6mm one side	Centrifugal casting, alloy layer reach 1.5mm-2mm one side,maxinumreach 3mmn-6mm one side
Alloy powder composition	Wc(50%-60%),C,Si,Cx,B,Ni,Mo,Co,etc	N,C,Si,Cr, B,Mo,Co,Wc(20%-25%).etc	Fe,C,Si,Cr, B,Mo,Ni, Co,etc
The index of hardness	HRC62-65,the service life of5-6 times longer than the nitnide one	HRC60-63.the service life of 4-5 times longer than the nitnide one	HRC59-61the service life of3-5 times longer than the nitnide one