Sure Plastic Machine Screw: With high quality and science, accurately matching customer production needs
In the field of plastic extrusion equipment, the screw is the core "heart" component, and its performance directly determines the production efficiency, product quality and enterprise economic benefits. Authoritative data shows that improper screw design and material selection may lead to a 30%-50% decrease in production efficiency, a product defect rate soaring to more than 20%, and even equipment failures causing high downtime losses. Sure Plastic Machine has been deeply involved in the industry for many years and has always regarded screw technology research and development as its core competitiveness. With high-quality material selection and scientific design, it provides customers with highly adapted extrusion solutions.
The screw undertakes key functions such as plasticizing and mixing, material transportation and pressure establishment in the plastic extrusion process. For example, insufficient length-to-diameter ratio (L/D) will shorten the residence time of the material. According to experimental data, when the length-to-diameter ratio drops from 30:1 to 20:1, the plasticization uniformity decreases by about 40%, resulting in defects such as granularity and insufficient strength of the product; unreasonable compression ratio configuration. If a low compression ratio (<2.5) screw is used for crystalline plastics (such as PE and PP), the material will not be fully melted, and the extrusion pressure will be reduced by more than 30%, resulting in uneven pipe wall thickness and rough film surface. In addition, the poor wear resistance of the screw material will accelerate thread wear. The service life of ordinary carbon steel screws in the processing of high-filled materials (such as calcium carbonate content exceeding 40%) is only 1/3 of that of nitrided steel screws. The increased replacement frequency not only increases maintenance costs, but also causes a 15%-20% loss of production capacity due to frequent shutdowns.
Sure Plastic Machinery is well aware of the decisive impact of screw performance on production. It strictly follows scientific standards in material selection and provides diversified high-quality materials for different production scenarios and customer needs. For ordinary plastic extrusion scenarios, Sure Plastic Machinery uses nitrided steel screws, which are treated with surface gas nitriding to form a nitrided layer with a thickness of 50-80μm and a hardness of up to HV1000+ (equivalent to HRC70). The wear resistance is more than 5 times that of ordinary steel, and it can resist the erosion of weakly corrosive raw materials. Under medium load conditions, it can ensure that the equipment can operate continuously and stably for more than 8,000 hours, effectively reducing the customer's initial equipment investment cost; in the face of the complex needs of high-filling and highly corrosive material processing, Sure Plastic Machinery has launched a double alloy screw, which combines wear-resistant alloy layers such as tungsten carbide and chromium carbide with high-quality substrates. The surface hardness reaches HRC55-65, and the wear resistance is 3-5 times that of nitrided steel. It has strong chemical stability and can withstand acid and alkali environments with a pH value of 2-13. In the production of 40% glass fiber reinforced PA or high-content PVC stabilizer formula, the service life is extended to 3-5 years, greatly reducing maintenance costs and downtime losses.
In addition to high-quality materials, Sure Plastic Machinery also pursues science and innovation in screw design. From the aspect ratio and compression ratio of the screw to the segmented structure and mixing element configuration, every parameter and detail has been rigorously calculated and repeatedly tested. In view of the different material characteristics of crystalline plastics, amorphous plastics, thermosensitive plastics, etc., Sure Plastic Machinery provides customized screw structures: a sudden compression section is designed for crystalline plastics, so that the material can be compressed and melted in a short time, which is 25% more efficient than the gradual structure; low-shear gradual screws are optimized for thermosensitive materials (such as PVC), reducing shear heat by 30%, effectively avoiding material degradation, and ensuring that the product qualification rate is maintained above 98%. At the same time, the screw can also be flexibly configured with static mixers, distributed mixing sections and other components. In the co-extrusion process, the special mixing structure can control the melt temperature fluctuation within ±2°C, meet the production needs of precision products, and provide strong support for customers to expand production capacity.
"Our goal is to make every screw of Sure Plastic Machine become an 'efficient engine' on the customer's production line." The technical director of Sure Plastic Machine said, "From material selection to structural design, we are always customer-oriented, and through scientific technical solutions, we match the customer's production scenarios to the greatest extent to help customers reduce costs and increase efficiency. According to actual case statistics, customers who use Sure Plastic Machine screws have an average production efficiency increase of 40%, a product defect rate of less than 5%, and a 35% reduction in the overall operating cost of the equipment."
With its persistent pursuit of screw quality and technology, Sure Plastic Machine has successfully solved production problems for many companies and won wide recognition in the market. In the future, Sure Plastic Machine will continue to deepen the research and development of screw technology, and help the high-quality development of the plastic processing industry with better products and services.
