Maintenance and post-cleaning of KTS high-performance extruders

In the field of plastic processing, KTS high-performance extruder has become a key equipment in the manufacturing field due to its process stability and customized design. However, its long-term operation is inseparable from scientific maintenance and machine cleaning.

The core of maintenance work lies in the control of equipment status. Before operation, the temperature control system needs to be systematically checked to ensure the sensitivity of the thermocouple and the heating module, and the heating curve is set according to the type of raw material. After reaching the target temperature, the temperature needs to be kept constant to eliminate errors. For the transmission system, the oil level of the reduction box and the lubrication pipeline need to be monitored weekly, and the bearings need to be lubricated periodically with lithium-based grease. At the same time, the vibration analyzer is used to detect the axial runout of the screw. If it exceeds 0.05mm, it needs to be stopped for calibration.

The cleaning process is the focus of maintenance. For the multi-stage mixing design of KTS, the "three-stage cleaning method" can be used: first, use friction materials such as rice husks or corn cobs to run at 180°C, and use their angular structure to peel off the screw ridge residues; then use special cleaning resins to decompose the carbonized layer through shear heat; finally, use production materials to transition to a color-free state. This method can reduce the cleaning time and reduce the amount of solvent used. For the cleaning of precision molds, ultrasonic waves combined with food-grade citric acid solution are required to soak them to prevent hard tools from scratching the flow channel surface. After treatment, dimethyl silicone oil is applied to prevent oxidation. When facing special working conditions, such as chlorine corrosion residues after processing PVC, a thermal decomposition method is required: the barrel is heated to 230°C and maintained for 30 minutes, so that the residues are carbonized and discharged through the reverse screw rotation. This process requires the simultaneous opening of a strong exhaust system to prevent the escape of toxic gases.