Description: The grinding needle is the core working component in a needle impact mill that directly realizes material crushing. It relies on high-speed rotation to impact, shear, and grind the material, achieving ultrafine pulverization. It is generally divided into dynamic needles and static needles.
1. Core Crushing
When rotating at high speed, the grinding needles repeatedly hit and strike the material, while forming shear, friction, and grinding with the stator needles, turning blocky/granular material into fine powder.
2. Control Fineness
The number, arrangement, length, and gap of the grinding needles directly determine the final particle size; the smaller the gap and the higher the linear speed, the finer the grinding.
3. Withstand Impact and Wear
Continuously withstand the high-speed impact and erosion of materials; they are the fastest-wearing and most frequently replaced consumable parts of the machine.
4. Airflow Disturbance and Classification
Rotation drives the airflow, allowing fine powder to be discharged with the airflow while coarse powder remains in the chamber for further grinding, serving a certain internal classification function.
Generally slender cylindrical rods, with some having round, flat, or conical heads
Alloy tool steel 3Cr13
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