Knife selection involves material toughness, hardness, fillers and process requirements. Steel grade is one part of the decision; geometry, heat treatment and maintenance also matter.
Discuss steel grades around the feed
SKD11, D2 and related steels can be used for selected granulator knives. Glass fibre, contamination and other fillers can change wear conditions; confirm the grade against the application and equipment requirements.
Match the geometry to the machine
Blade, claw and other cutting arrangements serve different feeding and cutting methods. Check dimensions, mounting positions, the matching rotor and clearances before replacement.
Plan inspection and maintenance
Inspect cutting edges, fasteners and clearances regularly. Follow the manual for resharpening and replacement, and carry out shutdown, disconnection and energy isolation before maintenance.
Keep records of actual use
Knife service intervals depend on the feed, foreign objects, feeding method and maintenance. Records of material, operating hours and service work can inform later configuration changes.