Conical Twin Screw & Barrel-zhejiang demaji machinery co., ltd.

Conical Twin Screw & Barrel

1. Meaterial:38CrMoAIANitriding treatment,Surface hardness:HV≥900Nitriding depth:0.5-0.8mm
2. Base material:38CrMoAlA A, a Special alloy is welded on the flight of the screw, prolonging the life of the screw.
3. Easy-wearing parts of the barrel made from anti-wear alloy can be abrasive performance.

For a good plasticizing effect, we have different designs of screw barrels to meet customer's demands.
Gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type, exhaust type, pin type, mixed type, double-head type, three-head type, multi-head type, etc.
Refer to the following specification and small part be designedaccording to the compression ratio:φ15/φ30,φ25/φ55 , φ35/φ75，φ40/φ83,φ45/φ90-99，φ48/φ112-117，φ50/φ105110,φ51/φ105-120，φ55/φ110-125，φ58/φ125，φ60/φ125129，φ65/φ120-132,φ68/φ147，φ70/φ150，φ74/φ156-162φ80/φ143-156-162,φ86/φ177,φ92/φ184-188，φ95/φ193φ105/φ203
scope of application :WPC PVC.WPC PE,Super high molecularsheet,1/2 high Calcium buckle,50-400 high Calcium pipe,50-300 high Calcium Profile,soft PVC sheet,XPs -PVC etc.
PP、PE、ABS、PVC, raw material, pelletizing, pipe, profile, sheet, etc.

Screw&barreluse material

Raw material	The finished product processing requirements
38CrMOAIA,SACM645	Nitriding treatment
Cr12MoV ，Cr12	Alloy steel
38CrMOAIA,SACM64540Cr，AISI4140，42CrMo	Bimetallic of the inner hole centrifugal casting
GHII3	nature hard after high temperature

scope of application: WPC PVC.WPC PE, Super high molecular sheet,1/2 high calcium buckle,50-400 high Calcium pipe,50-300 high Calcium Profile, soft PVC sheet, XPs -PVCetc.
PP、PE、ABS、PVC, raw material, pelletizing, pipe, profile, sheet, etc.

For Pipe (WPC) Extrusion

Model	motor power(kW)	screw dia. (mm)	screw rotation speed (rpm)	PVC(kg/h)
DMJ45/90	15	45/90	34.7	60-80
DMJ50/105	18.5	51/105	34.7	80-100
DMJ55/110	22	55/110	34.7	120
DMJ65/132	30-37	65/132	34.7	150-250
DMJ80/156	55	80/156	34.7	250-400
DMJ92/188	110-132	92/188	34.7	500-700

For Pipe Extrusion

Model	motor power(kw)	screw dia.(mm)	screw rotation speed(rpm)	PVC(kg/h)
DMJ45/90	15	20	45	100
DMJ50/105	18.5	45/90	45	120
DMJ55/110	22	51/105	45	150
DMJ65/132	37	55/110	45	250
DMJ80/156	55	45	34.7	450
DMJ92/188	110	150	34.7	800

Raw material	The finished product processing requirements
38CrMOAIA,SACM645 .42CrMMo	Nitriding treatment
42CrMo， AISI 4140	Hard chrome-coated layer
4Cr5MoSiV1,SKD-61,SKD-11	Spraying bimetal alloy layer and nitriding treatment
HPM38,SI36,SUS440,9Cr18MoV	high-frequency quenching
GHII3	nature hard after high temperature