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Aug1. Cracks appear: this occurs when the pellet machine leaves the ring mold. Because the pellet machine breaks into the cracks when it enters the cooler for cooling or transportation, it will produce too much material for the pellets.
2. Cracks pass through the pellet machine: When the feed enters the ring mold granulation, there will be fibers longer than the pore size, and the fibers will swell to cause cracks in the cross section.
3. Vertical crack: After granulation by ring die compression, he will have elasticity and bounce off due to other effects of moisture, and vertical cracks appear.
4. Radiant cracks: These large-grain raw materials are difficult to absorb moisture during quenching and tempering, and when they are cooled, the amount of shrinkage is different because the degree of softening is different. This will result in the generation of radiant cracks.
5. The surface is uneven: when passing through the die hole of the granulator, he can not be well combined with other raw materials, so the particles will appear uneven.
6. Whisker-like pellets: This is caused by a sharp change in pressure that causes the particles to explode, which causes the fibers or particulate material to protrude from the surface, thereby forming a whisker.
7. Inconsistent particle color between individual particles or individuals: This mainly occurs when the water feed is produced, and the individual color particles are different from the normal color, which will affect the appearance of the whole batch of feed.