Conical Screws | Advanced Extruder Screw Design

Conical Screw

Screw structure and compression ratio can be designed according to different products

Materials :

Hardness :

HRC56-62

Application :

PVC、PE、WPC plate、pipe industry

Charactors :

High Hardness and High Wear-Resistance

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Main Advantages

Low shearing rate,uneasy degradation,plasticization uniform and agglomeration.

Reliable quality, wide application range and long servicing life.

Automatic temperature control, vacuum gas exhaustion,oil cooled screws.

forced feeding and self-cleaning mechanism.

For Bimetallic Process we also have our own advantages

We use special alloy powders being sprayed and welded on the screw's ridge, and we use different alloy and welding methods for the screw of different functions.

MAIN SPECIFICATION

Specification	Working length(mm)	Extrusion ability (kg/h)	Rotation speed of screw(rpm)
Φ35 / Φ77	810	40 - 70	5 ~ 50
Φ45 / Φ90	990	50 - 80	5 ~ 45
Φ50 / Φ105	1070	100 - 150	4 ~ 45
Φ51 / Φ105	1220	100 - 150	4 ~ 45
Φ55 / Φ110	1220	120 - 180	4 ~ 40
Φ60 / Φ125	1320	150 - 200	4 ~ 40
Φ65 / Φ120	1440	200 - 250	4 ~ 40
Φ65 / Φ132	1440	200 - 250	4 ~ 40
Φ70 / Φ140	1460	220 - 300	4 ~ 40
Φ75 / Φ150	1480	250 - 300	4 ~ 35
Φ80 / Φ143	1800	300 - 360	4 ~ 35
Φ80 / Φ156	1660	300 - 360	4 ~ 35
Φ92 / Φ188	2000	400 - 500	4 ~ 35

BIMETALLIC CONICAL BARREL PARAMETER

Basic Steel :

38CrMOAIA

Screw straightness :

0.015mm

Heat treatment hardness :

HB260° ~ 320

Chrome plating hardness :

≥ 950HV

Nitriding hardness :

HV950° ~ 1000°

Chrome thickness :

0.05 ~ 0.10mm

Nitriding depth :

0.50 ~ 0.7mm

Bimetal depth :

1.0 ~ 2.0mm

Nitriding brittleness :

≤ grade 2

Bimetal hardness :

HRC56° ~ 65°

Roughness :

Ra0.4

BIMETALLIC SPECIAL MATERIALS

Hot processed steel :

1.2344、H13、W360、SKD61

Hot processed stee :

1.2379、K340、D2、DC53、SKD11、W110

HSS:

1.3343、1.3243、SKH51、SKH55

HIP Powder HSS :

CPM9V、SK739、SK726、SK742、GH113

Stellite plasma alloy welding, alloy types: cobalt base,nickel base, iron base alloy.

SCREW ALLOY LAYER

QUALITY CONTROL

We always adhere to the principle of quality first and service first,adn strictly control the quality of every product that leaves the factory to ensure the interests of customers to the greatest extent possibly.