Wood pellet mills, as biomass agricultural machinery, are widely recognized for their easy operation and reliable performance.
The ring dies of wood pellet mills are manufactured via high-speed drilling, featuring excellent surface finish. To ensure stable output, the smoothness of die holes must be maintained. In addition, the following storage requirements should be met for ring dies:
Replace the oil-based filling in ring dies after 6 months of storage. Long-term storage will harden the filling, leading to machine clogging and failure to produce pellets upon reuse.
Store ring dies in a dry, clean, and well-ventilated area at all times. Coat the surface with waste engine oil for long-term idle storage to prevent corrosion from moisture in the air. Never place ring dies near production raw materials in workshops—raw materials easily absorb and retain moisture, which will accelerate ring die corrosion and shorten its service life.
When removing ring dies for standby during production, run oil-based materials through the mill to fully extrude all raw materials from the die holes before shutdown. This ensures unobstructed pellet discharge in subsequent use. Without oil-based filling, residual raw materials (containing moisture) will corrode and roughen die holes during storage, impairing discharge performance.
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