What are the operation points and precautions of twin screw extruders in powder production equipment?

In powder production equipment, a twin screw extruder is a common device used to heat, melt and extrude powder materials. In the operation of the device, it is necessary to pay attention to the following points and precautions:

1. Safe operation: Before operating the machine, you must be familiar with the safe operation procedures of the equipment, and wear the corresponding personal protective equipment, such as safety hats, protective glasses, protective gloves, etc. At the same time, ensure that the electrical equipment and hydraulic system of the machine operate normally to avoid accidents.

2. Equipment preparation: Before operating the device, it is necessary to prepare the equipment. First of all, check whether the various parts of it are in good condition, such as screw, barrel, die and so on. Secondly, clean the residue in the barrel to ensure that the barrel is clean. Finally, according to the processing requirements, select the appropriate mold and powder material, and preheat.

3. Temperature control: The temperature control of the equipment is very important, which directly affects the melting and extrusion effect of the powder. When operating the machine, it is necessary to set the appropriate heating temperature according to the melting temperature range of the powder. At the same time, the temperature control system should be checked and calibrated regularly to ensure the accuracy and stability of the temperature.

4. Powder feeding: When operating the device, it is necessary to add the preheated powder into the barrel through the feed port. In order to ensure uniform powder feeding, auxiliary equipment such as hoppers or screw conveyors can be used. At the same time, attention should be paid to controlling the feed speed and quantity to avoid problems caused by too fast or too slow.

5 Extrusion process control: In the extrusion process, it is necessary to control the various parameters of the equipment, such as screw speed, feed speed, extrusion pressure, etc. The selection and adjustment of these parameters need to be determined according to the characteristics of the powder and processing requirements. At the same time, it is necessary to regularly check and maintain the transmission system and hydraulic system of the twin screw extruder to ensure its normal operation.

6. Mold adjustment: The mold adjustment of the extruder is the key to ensure the quality of extrusion molding. In the operation of the extruder, it is necessary to adjust the parameters of the mold opening and closing, extrusion speed and pressure according to the size and shape of the product. At the same time, the mold should be regularly checked and maintained to ensure its accuracy and service life.

7. Quality inspection: In the extrusion process, the quality inspection of the extruded products needs to be carried out regularly. Quality inspection may include dimensional measurement, appearance inspection, physical performance testing, etc. Through quality inspection, problems can be found and corrected in time to ensure the quality of extrusion products.

8. Cleaning and maintenance: After the operation of it, the equipment needs to be cleaned and maintained. First, the residue in the barrel is cleaned to avoid the impact on the next processing. Secondly, the various parts of the extruder are inspected and maintained to ensure the normal operation and service life of the equipment.

To sum up, the operation of the twin screw extruder requires attention to safe operation, equipment preparation, temperature control, powder feeding, extrusion process control, mold adjustment, quality inspection, cleaning and maintenance and other points and precautions. Only by doing these jobs well can we ensure the normal operation and processing quality of the machine.