What is a Bimetallic Screw Barrel- Zhoushan Jiading Plastic Machinery Co., Ltd.

A bimetallic screw barrel comprises two layers of metal. The inner layer is made of a high wear-resistant alloy, while the outer layer is made of a high-strength and high-temperature alloy. The two layers are metallurgically bonded using an advanced technology called centrifugal casting, which ensures a strong and uniform bond between the two layers. The bimetallic screw barrel system is designed to handle high-temperature and high-wear applications, making it an ideal choice for the injection molding industry.

Advantages of Bimetallic Screw Barrel

Extended Service Life

The bimetallic screw barrel system has a longer service life compared to conventional screw barrel systems. The wear-resistant inner layer ensures that the screw barrel can withstand high-wear applications, while the high-strength and high-temperature outer layer ensures that the screw barrel can withstand high-temperature applications. The result is a screw barrel system that can handle high-wear and high-temperature applications for extended periods without requiring replacement.

Improved Molding Quality

The bimetallic screw barrel system offers improved molding quality compared to conventional screw barrel systems. The wear-resistant inner layer ensures that the plastic material is melted and mixed uniformly, while the high-strength and high-temperature outer layer ensures that the plastic material is injected into the mold cavity accurately. The result is a final product that is of high quality, with consistent dimensions and surface finish.

Reduced Downtime

The bimetallic screw barrel system requires less maintenance compared to conventional screw barrel systems, resulting in reduced downtime. The wear-resistant inner layer ensures that the screw barrel can handle high-wear applications without requiring frequent maintenance, while the high-strength and high-temperature outer layer ensures that the screw barrel can handle high-temperature applications without requiring frequent replacement.

Cost-effective

The bimetallic screw barrel system is cost-effective compared to conventional screw barrel systems. Although the initial cost of the bimetallic screw barrel system is higher, the extended service life and reduced maintenance and downtime costs result in significant savings in the long run.

Conclusion

The injection molding industry is highly competitive, and manufacturers are constantly seeking ways to improve efficiency and quality while reducing costs. The bimetallic screw barrel system is a technological advancement that offers superior performance and durability compared to conventional screw barrel systems. The extended service life, improved molding quality, reduced downtime, and cost-effectiveness of the bimetallic screw barrel system make it an ideal choice for the injection molding industry.

Twin extruder Bimetal screw and barrel

The bimetallic barrel for single screw extruder is a kind of barrel spray 2-5mm thick alloy coat on the barrel inner wall which has excellent corrosion resistance, abrasion resistance and high working temperature. And its useful service life is greatly improved contrast to common nitrided barrel. Bimetal has more obvious advantages when processing special plastics to enhance the abrasion life, such as engineering plastics, fluoride plastics, PPO etc. Our company use special alloy powders being sprayed and welded on the top of screw flights, and use different alloys and welding methods.