The causes of carbonization are impurities in raw materials, screw or barrel damage, black spots in production materials, and the most important reason is improper shutdown mode. For the first two reasons, I think the solution is obvious. Let's focus on the latter two solutions.
There are two cleaning schemes to produce carbide.
The first method is to pull out the screws and polish them. The advantage of this method is thorough cleaning, but the disadvantage is that it may affect the accuracy of the machine. Polishing consumes manpower and time, and may also affect the life of screws.
The second method is to clean with screw cleaning material, but any screw cleaning material can not be thoroughly cleaned because carbide is metallophilic. Once it is produced, if you want to completely remove it, you need to look at the condition of the machine itself. The machine has good screws and can be cleaned once if possible. However, if the machine is rarely maintained or there are problems with the screws, it is estimated that it is difficult to clean it once. Therefore, Baijietong suggested cleaning and maintenance. When cleaning, it is necessary to prevent the formation of new carbides. What if it is stopped? When the screw stops running, appropriate screw cleaning materials are added to prevent the generation of new carbides, and at the same time, the original carbides can be cleaned. After 2-4 cycles, this black spot problem can be solved. More importantly, we are the concept of prevention, even if we stop the machine in the future, we are not afraid of producing agglomerated carbides.
Of course, the first method and the second method can also be used in combination. If it is possible to adjust the screw, the second method can be used to stop maintenance after polishing to prevent carbide. If carbide is very serious, the method must be cleaned first.
I hope the above plan will help you.