Jilin Petrochemical Synthetic Resin Plant recently announced that the localization transformation of extruder screws for its 5 ABS production lines has been completed, and the equipment has been running stably for 40 days, marking the successful breaking of foreign monopolies with domestically produced screws. Previously, the factory relied on imported screws for a long time, with a single procurement cost of up to 480000 yuan and a supply cycle of up to 6 months. Once wear and tear occurred, it would directly lead to production stoppage.
The technical team used 3D scanning reverse modeling and material formula optimization, and adopted 38CrMoAlA alloy material and nitriding treatment process to increase the surface hardness of domestic screws to HV1000 or above, and the wear resistance increased by 15% compared to imported products. The measured data shows that the fluctuation of screw extrusion volume after the transformation is controlled within ± 2%, fully meeting the requirements of ABS resin mixing. Based on 2 screws per production line and a 3-year replacement cycle, the entire lifecycle of 5 lines can save costs of over 10 million yuan. At present, this technology has been introduced by enterprises such as Daqing Petrochemical and Shanghai Petrochemical, and the penetration rate of the domestic high-end screw market will exceed 60% within this year.