The threaded element is a functional component fitted onto the mandrel that directly contacts the material. These elements perform various processing tasks through different geometric configurations (including thread count, pitch, and rotation direction). This modular design is commonly referred to as a "building block" screw.
The mandrel, also known as the screw mandrel or main shaft, is a central shaft constructed from high-strength alloy steel. It serves as the structural foundation and power transmission axis for the entire screw system.
Together, the threaded element and mandrel form the core functional components of twin-screw extruders, determining the quality and efficiency of material plasticizing, mixing, and conveying. These precisely engineered components work in tandem to enable complex processing functions.
| Material | Performance Characteristics |
|---|---|
| 40CrNiMo | Torque capacity of 10-11, but performance declines above 250°C |
| 17-4PH (1.4548) | Maintains performance up to 350°C without degradation |
| WR15E | Higher torque capacity (13-15) |
| IN718 | Industry-leading torque performance, ideal for high-temperature applications |
We specialize in manufacturing ultra-high wear-resistant, corrosion-resistant, and high-temperature resistant integral sleeves and nickel chromium composite screw elements. Our engineering team develops custom solutions tailored to specific customer requirements and operating conditions.
Our competitive advantages include:
With strong technical capabilities, advanced manufacturing equipment, rigorous quality control systems, and proven production techniques, we have established ourselves as a leading supplier of plastic extruder components. Our products are compatible with major extruder brands including Leistritz and Buss.
We operate with a philosophy of cooperation, mutual benefit, integrity, and transparency, delivering superior products and efficient service worldwide. We welcome opportunities to collaborate with new partners.
