1, learn to listen to the sound.
The speed and feed changes in high and low temperature, the sound emitted by the machine are very different. It takes trial and error in practice, to try to keep the machine running the sound when the state of the best.
2, learn to see material. Look out of the material from the nose is important because this is the first key to find the cause. Animate materials, the temperature is too low to be heated; a **** material, the temperature is too high to be cool and so on.
3, see particle surface gloss and density. Plastics bad, loose particles: matte because the granulation temperature and cooling water temperature abuse.
In short much in the granulation process must listen more and more to explore, to discover the problem and promptly corrected. Granulation technique was based on the different machines and their actual performance in the exploration, the accumulation of experience.