Cone twin-screw is different in appearance from parallel twin-screw, with different diameters at both ends. The feeding section has a larger diameter, while the homogenization section has a smaller diameter, with a gradual transition in the middle. This design makes the plasticization process of the material in the screw more uniform, making it particularly suitable for processing thermoplastic plastics such as PVC. Two conical screws mesh with each other and rotate in opposite directions in the barrel, and the material achieves a high degree of plasticization and mixing effect under strong stirring and shearing. This product uses high-quality 38CrMoAlAl as the substrate and is manufactured through sophisticated processes such as tempering, qualitative analysis, nitriding, precision grinding, and polishing, ensuring the durability and high quality of the product.
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Material selection |
high-quality 38CrMoALA |
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Surface hardness |
HV ≥ 290 |
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Nitriding hardness |
HV950-1000 |
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Nitriding depth |
0.45-0.7mm |
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Nitriding brittleness |
≤ Level 1 |
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Surface roughness |
Ra0.4 |
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Screw straightness |
0.015mm |
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Surface chrome plating hardness after nitriding |
≥ 900HV |
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Chrome plating thickness |
0.05-0.10mm |
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Dual alloy hardness |
60-70HRC |
45/90 (Φ) 45/100 (Φ) 50/105 (Φ) 51/105 (Φ) 55/100 (Φ) 80/125 (Φ) 65/132 (Φ) 80/143 (Φ) 80/158 (Φ) 92/188 (Φ) 110(Φ) 115(Φ) screws choose different compression ratios according to different formulas and products
Scope of application:
Ordinary plastic, PP、PE、ABS、PVC、 Raw material granulation, production of pipes, profiles, sheets, wood plastic, and other extrusion machinery.
Product advantage:
The design of the conical twin screw allows the material to be strongly stirred and sheared in the screw, resulting in very uniform plasticization and improving the quality of the product. Conical twin-screw can process various thermoplastic materials, especially rigid polyvinyl chloride powder, which can be directly extruded into plastic products such as pipes, plates, sheets, rods, films, and profiles. It can also complete the modification of various plastics and powder granulation processes. Using high-quality 38 chromium molybdenum aluminum material and undergoing various processing techniques, the conical twin-screw has the characteristics of precision wear resistance, and its service life is 3-5 times longer than ordinary nitriding screws. The product is driven by a new type of variable frequency motor or DC motor, which runs smoothly, transmits large torque, and has high efficiency. By importing frequency converters or DC speed controllers, stepless and smooth speed regulation can be achieved, with high precision and energy saving. Adopting an oil cooling system and a special air cooling system, the equipment ensures efficient operation while quickly dissipating heat and maintaining temperature stability. The conical twin-screw extruder also performs well in the production of rubber products and can produce rubber products such as tires, pipes, seals, etc. It is widely used in industries such as automobiles, machinery, and electronics.
The company has more than 10,000 square meters of production workshop, more than 60 employees. Since its founding in 1990, it has been committed to the production and research of plastic machinery, while introducing foreign screw machinery technology and technology. Main products: WB-WE series planetary screw, planetary barrel and planetary extruder; SJS series conical double screw, double barrel and double screw plastic extruder; SJ series single screw, single barrel and single screw plastic extruder; Pearl-cotton screw barrel; And all kinds of pipe, sheet, shaped production lines. Is a diversified large-scale professional production base in China, set precision screw barrel and machinery machinery processing plant in one, based on high grade and high-end market, mainly exported to the United States, Germany, Dubai, Vietnam, Thailand and many other countries, the cooperation of customers have many plastic production and construction machinery factory customers, Has become an important supplier of their mechanical parts in China. In line with the principle of reputation first, service first, to provide our customers with cheap and beautiful products. Welcome customers to come to negotiate business and create a career.
Booth 5R01(15 April 2025-18 April 2025) The 37th China International Plastics and Rubber Industry ExhibitionChina • Shenzhen • Shenzhen International Convention and Exhibition Center
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