Conical Twin Screw Barrel

Material: 38crmoala; skd61; skd11; 40cr; 42crmo; high quality alloy steel technology: nitriding treatment, alloy coating spraying, heat-treatment appliance: pvc, pp, pe, pa, pc, abs, as etc depth of nitrated layer: 0.40-0.70mm hardness of nitration: 950-1050hv fragility of nitration: less than grade 1 surface hardness of nitrated cr coating layer: greater than 950hv hardness of bimetallic layer: hrc55-62 thickness of cr-coating layer: 0.03-0.08mm depth of bimetallic layer: greater than 2mm.