Factors determining performance and service life of ring die in biomass pellet mill

Biomass pellet mill is the pelleting machine that can be used to process various kinds of materials, such as sawdust, paddy straw, sun flower stalk, hulls, forestry wastes, wood chips and many other wastes and solid powder materials. Biomass pellets are extruded by the press rollers and ring die of biomass pellet mill under normal temperature conditions. The density of raw materials can be greatly increased, which is conducive to pellet transportation and storage.


Know more about how to choose ring die pellet mill

1, Wear resistance: the damage of most of the ring die in biomass pellet mill is caused by the wear. After using for a period of time, the surface of ring die would wear and the die holes would be enlarged. Moreover, the wear resistance of ring die changes with its surface hardness, microstructure and chemical composition.It is mainly determined by the material and the method of heat treatment.
2, Corrosion resistance: some added materials would lead to pitting corrosion under high temperature and high pressure and further corrode the die. Corrosion resistance is one of the most critical factors influencing the properties of the ring die. The die of high carbon and high chromium has the best corrosion resistance ability.
3, Toughness: during the operation of biomass pellet mill, the rind die bears huge impact, which would lead to the damage of ring die. Besides, overtime working could also cause fatigue damage of the ring die. The material selection, heat treatment, opening rate of the die are the important factors influencing the toughness of the ring die.
The relations among the three factors:
1, Wear resistance and toughness: improve the hardness of the die can increase its wear resistance. However, it will reduce the toughness of the die and increase its brittleness, so we must limit the hardness of the die to meet the minimum level of using.
2, Wear resistance, corrosion resistance and toughness: poor metal structure and corrosion resistance of the ring die will reduce its wear resistance, and the impact resistant ability would be poor and easy to crack.
3, Toughness and opening rate: the increase of opening rate may result in the crack of the die easily.
4, These factors should be considered comprehensively when choosing the ring die.

KMEC is a professional supplier and manufacturer of biomass pellet machine and pellet plant in home and abroad. Our pellet mill for sale has broad market all over the world and has been exported to Asia, Africa and Europe countries in recent years. We provide the most professional pelleting service and our technicians are ready to help you at any time. Please feel free to contact us.
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