During the processing of modified plastics, functional Masterbatch, high filling and glass fiber reinforced materials, twin-screw extruders often need long-term high-load operation. With the increase of filling ratio and the development of equipment towards high torque and high rotating speed, the wear and reliability problems of core components of extruders such as screw part, mandrel and barrel are becoming more prominent.

At the same time, the production sites of many enterprises coexist with twin-screw extrusion equipment of multiple brands and different ages. Imported spare parts have high price and long delivery period, and old or non-standard parts may face problems such as incomplete drawing materials. Therefore, "domestic substitution" has become a realistic topic that more and more enterprises need to face in the process of cost reduction and supply chain localization.

But when it is really implemented, the problem is far more complicated than "finding a spare part with the same specification.

For technicians, different material systems, filling ratios and working conditions have put forward different requirements for screw part materials, wear resistance and corrosion resistance. For equipment personnel, there are many brands, how to accurately confirm spare parts and ensure the key dimensions and matching accuracy of old equipment with multiple models and even lack of original data is an important consideration in the maintenance process. However, at the level of procurement and operation, further answers are needed: how to judge the consistency of materials, manufacturing processes and quality of domestic spare parts? After selecting a new supplier, is the service life, Maintenance frequency and downtime risk controllable?

In other words, domestic substitution should not only consider "whether it can be changed", but also consider "whether it can be used stably after being changed".

Therefore, the localization of imported spare parts is not only "changing products", but also the key to choosing a reliable long-term cooperative supplier. In addition to the price and delivery date, we also need to pay attention to its multi-brand adaptation, materials and manufacturing processes, testing and quality traceability capabilities, as well as the ability to ensure the long-term stable operation of core components under complex working conditions.

On October 30, 2026,14: 00-15:00, Xu Libing, general manager of Nanjing Lixun screw Co., Ltd., will be a guest in Jung's online class. With 28 years of experience in the field of twin-screw extrusion and core components, he will start from the actual processing conditions and combine the R & D, manufacturing and application experience of core components such as screw part and mandrel to focus on screw wear, material selection, mandrel share issues such as reliability and localization of imported equipment spare parts to provide references in different dimensions for process, equipment, procurement and operation personnel.

Speech outline:
▶High filling and glass fiber reinforced modification: how to prolong the service life of screw?
▶Screw wear, how to deal with: direct replacement, local upgrade or overall optimization?
▶High torque and high speed working conditions: What is the value of cold rolling mandrel?
▶Localization of imported equipment spare parts: how to "change suppliers without changing performance"?

If you come from a plastic modification or Masterbatch processing enterprise, you can find your answer from this online class, no matter you are responsible for process technology, equipment management, procurement supply chain or production operation. What are you waiting for in such a dry class? Sign up and register for the course now!