Focus on Conical twin screw, barrel production and sales
Service hotline: 0580-8593027
All kinds of screw barrels produced by our company are made of 38CrMOALA alloy steel. After quenching and tempering, finishing, and surface ammoniation treatment, they can also be electroplated (hard chromium plated on the surface), and the screw surface is sprayed with double alloy. The barrel surface uses the advanced production process of bimetallic technology, the centrifugal casting method, so that the products have high wear resistance, corrosion resistance, improve life and other advantages, and can replace imported products.
Conical twin screw
Product materials
Alloy-Steel of High-Quality
38CrMoALA(JIS SACM645)
42CMo(JIS SCM440)
9Cr18MoV
CW6Mo5Cr4V2
Heat treatment
Nitriding treatment
Electroplated hard chromium layer
High frequency quenching
Spray corrosion resistant and wear-resistant bimetallic layer
Vacuum quenching
Technical indicators
Nitriding layer depth：0.5~0.8mm
Nitriding hardness：950~1020HV
Nitriding embrittlement：Less than grade 1
Surface roughness：Ra 0.4um
Screw straightness：0.015mm
Double alloy hardness：HRC55-62
Double alloy thickness：>2mm
Screw type
For different plastic properties, screws with different structures can be selected to improve the plasticizing effect, such as gradual, abrupt, wavy, barrier, double screen, shunt, separate, exhaust, pin, mixed, double headed, triple headed, multi headed, etc.
Screw and barrel specifications
|
Specification(d/D)
|
Working length(mm)
|
Extrusion ability(Kg/h）
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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
|
Product application scope
PVC plastic steel profile
PVC resin tile, PE corrugated pipe
PVC, PE, PP wood plastic profiles
PVC, PP, PE, PC, ABS and other profile extrusion
PVC wood plastic (foam) door panel, decorative board and other wide plate
PS, PET, PC, PMMA, TPU and other profiles
Zhoushan Qiyu Machinery Co., Ltd
Zhoushan Qiyu Machinery Co., Ltd. is a professional manufacturer of screw and glue cartridge in China. The company has strong technical force, advanced process equipment, production facilities and perfect testing facilities to ensure that the production quality meets the requirements. From various screw design: alloy spray welding to various specifications of single screw, tapered, parallel twin-screw; Production of PVC, EVA, TPR, TR, screw, barrel, etc. All of them are of high standard and precision and have won the trust of customers.