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Technical Information for Conical Twin Screw Barrel
Main Base materials
1.38CrMoAlA (SACM645)
Main Alloy Materials
1. Ni-based alloy/Deloro alloy
2. SKD-61 (Special Tool Steel)
2. Tungsten carbide/Wolfram carbide
3. 42CrMo (Ultrahigh StrengthSteel)
3. NiCo-based alloy
4. DC53 (Cold WorkDie Steel)
4. Fe-based alloy
5. W6Mo5Cr4V2 (High-SpeedToolSteel)
5. Co-based alloy
Processing Technics
1. Heat treatment
Technical parameters
Nitriding layer depth:0.5-0.8mm
2. Quenching
Nitrided hardness:900-1000HV
3. Nitriding treatment
Bimetallic layer depth:3 mm
4. Bimetallic alloy welding for screw
Bimetallic hardness:57~69HRC
5. Bimetallic alloy centrifugal casting for barrel
Hard-chrome plating hardness after nitriding:≥950HV
6. Hard-chrome electroplating
Chrome-plating layer depth:0.03-0.09mm
Linearity of screw:0.015mm
Surface roughness:Ra 0.4
The most common types of conical twin screw barrel extruder
types of screw (d/D)
length of work(mm)
quantity ofextruder(kg/h)
speed of screw rotate(rpm)
Φ35/77
810
40-70
5~50
Φ45/99
990
50-80
5~45
Φ51/105
1070
100-150
4~45
Φ51/105
1220
100-150
4~45
Φ55/110
1220
120-180
4~40
Φ60/125
1320
150-200
4~40
Φ65/120
1440
200-250
4~40
Φ65/132
1440
200-250
4~40
Φ70/140
1460
220-300
4~40
Φ75/150
1480
250-320
4~35
Φ80/143
1660
300-360
4~35
Φ80/156
1800
300-360
4~35
Φ90/184
2000
400-500
3~35
The most common types of parallel twin screw barrel extruder
D35/5
D45/2
D50/2
D60/2
D65/2
D70/2Â Â
D72/2
D75/2
D80/2
D85/2
D90/2
D93/2
D100/2
D105/2
D110/2
D115/2
D120/2
D125/2
D130/2
D140/2
D150/2
D160/2
D170/2
D180/2
D190/2
D200/2
D200/2
D250/2
Screw types:
Gradual change, chop, barrier, distributary, separate, air exhausting, pin, mixing and etc.
For good plasticizing effect, we have different design of screw barrel to meet customer's demand.
Specification :
Dia 20mm-250mm; L/D=15-45
Scope of Application:
1. Generally plastic material
2. Pipe/ Profile/ Sheet/Pelletizing
3. WPC, ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU,PE etc
Treatment:
Nitrized, Chrome coating, Quenching, Bimetallic
We are foucs on each process to make sure each screw barrel is qualified according to technical requirement. 
Packaging Details:
1. Be brushed anti-corrosive oil on extruder machine single screw.Â
2. Packed with film.Â
3. Packed in the AA wooden.
Please provide samples or requirements about dimensions and tolerances of , semi-finished and finished products, the equipment, the monthlly comsumption quantity, the current screw and barrel you are using, HRC and so on.
For more information, please kindly contact as below:
Mobile: 0086-13917356326
Technical Information for Conical Twin Screw Barrel
Main Base materials
1.38CrMoAlA (SACM645)
Main Alloy Materials
1. Ni-based alloy/Deloro alloy
2. SKD-61 (Special Tool Steel)
2. Tungsten carbide/Wolfram carbide
3. 42CrMo (Ultrahigh StrengthSteel)
3. NiCo-based alloy
4. DC53 (Cold WorkDie Steel)
4. Fe-based alloy
5. W6Mo5Cr4V2 (High-SpeedToolSteel)
5. Co-based alloy
Processing Technics
1. Heat treatment
Technical parameters
Nitriding layer depth:0.5-0.8mm
2. Quenching
Nitrided hardness:900-1000HV
3. Nitriding treatment
Bimetallic layer depth:3 mm
4. Bimetallic alloy welding for screw
Bimetallic hardness:57~69HRC
5. Bimetallic alloy centrifugal casting for barrel
Hard-chrome plating hardness after nitriding:≥950HV
6. Hard-chrome electroplating
Chrome-plating layer depth:0.03-0.09mm
Linearity of screw:0.015mm
Surface roughness:Ra 0.4
The most common types of conical twin screw barrel extruder
types of screw (d/D)
length of work(mm)
quantity ofextruder(kg/h)
speed of screw rotate(rpm)
Φ35/77
810
40-70
5~50
Φ45/99
990
50-80
5~45
Φ51/105
1070
100-150
4~45
Φ51/105
1220
100-150
4~45
Φ55/110
1220
120-180
4~40
Φ60/125
1320
150-200
4~40
Φ65/120
1440
200-250
4~40
Φ65/132
1440
200-250
4~40
Φ70/140
1460
220-300
4~40
Φ75/150
1480
250-320
4~35
Φ80/143
1660
300-360
4~35
Φ80/156
1800
300-360
4~35
Φ90/184
2000
400-500
3~35
The most common types of parallel twin screw barrel extruder
D35/5
D45/2
D50/2
D60/2
D65/2
D70/2Â Â
D72/2
D75/2
D80/2
D85/2
D90/2
D93/2
D100/2
D105/2
D110/2
D115/2
D120/2
D125/2
D130/2
D140/2
D150/2
D160/2
D170/2
D180/2
D190/2
D200/2
D200/2
D250/2
Screw types:
Gradual change, chop, barrier, distributary, separate, air exhausting, pin, mixing and etc.
For good plasticizing effect, we have different design of screw barrel to meet customer's demand.
Specification :
Dia 20mm-250mm; L/D=15-45
Scope of Application:
1. Generally plastic material
2. Pipe/ Profile/ Sheet/Pelletizing
3. WPC, ABS, TPR, TPU, PMMA, C-PVC, UPVC, RPVC, PET, EVA, PU,PE etc
Treatment:
Nitrized, Chrome coating, Quenching, Bimetallic
We are foucs on each process to make sure each screw barrel is qualified according to technical requirement.Â
Packaging Details:
1. Be brushed anti-corrosive oil on extruder machine single screw.Â
2. Packed with film.Â
3. Packed in the AA wooden.
Please provide samples or requirements about dimensions and tolerances of , semi-finished and finished products, the equipment, the monthlly comsumption quantity, the current screw and barrel you are using, HRC and so on.
For more information, please kindly contact as below:
Mobile: 0086-13917356326
Nitriding Conical Twin Screw Barrel for PVC WPC Extrusion Machine
Model NO.: GMT-Screw
Nitrided Depth: 0.5-0.8mm
Surface Roughness: <=Ra0.4
Trademark: GMT
Transport Package: AA Wooden Case
Specification: Customize
Origin: China
HS Code: 84779000
Model NO.: GMT-Screw
Nitrided Depth: 0.5-0.8mm
Surface Roughness: <=Ra0.4
Trademark: GMT
Transport Package: AA Wooden Case
Specification: Customize
Origin: China
HS Code: 84779000