The grinding sets are designed for use under extreme conditions like high sample throughput and high mechanical strain.
A grinding set for the Vibratory Disc Mill RS 200 consists of a grinding jar with disc and lid; the 100 ml and 250 ml jars have an additional grinding ring.
The safe, non-slip attachment of the grinding sets is ensured by an integrated anti-rotation lock on lid and base. These are perfectly sealed with an o-ring.
The document “How to obtain the best results with the Vibratory Disc Mill RS 200” in the Downloads section provides information about optimum grinding jar fillings.
To ensure efficient and contamination-free grinding processes, the grinding sets are available in 5 different materials (no undesired abrasion).
The energy input increases with the density of a material. For pulverizing soft samples, materials with a low to medium density should be used, whereas for hard samples it is better to use high-density materials.
Available materials:
- Hardened steel (density 7.6 g/cm3; hardness ≤ 250 HB, medium abrasion resistance)
typically used for pulverizing medium-hard to hard and brittle samples.
- Tungsten carbide (density 14.8 g/cm3; hardness 93.6 HRA; high abrasion resistance)
used for grinding very hard, brittle sample materials. By using tungsten carbide, contamination of the sample with iron is prevented.
- Agate (density 2.6 g/cm3; hardness 6.5 – 7 Mohs, low abrasion resistance)
a highly pure natural material suitable for pulverizing soft to medium-hard or fibrous samples. Due to its low-density agate is suitable for gentle grinding processes with low energy input.
- Zirconium oxide (density 6.05 g/cm3; hardness 1250 HV, high abrasion resistance)
ceramic material suitable for pulverizing medium-hard to hard and fibrous samples. It is typically used for heavy-metal-free grinding process.
- Steel 1.1740 for grinding without heavy-metal contamination (density 7.8 g/cm3; hardness ≤ 255 HB, medium abrasion resistance)
mainly used for heavy-metal-free grinding of medium-hard to hard and brittle sample materials.
Please note: The grinding tool material should be harder than the sample. For further information check the “Material Analyses of Equipment & Accessories” document in the Downloads section.
