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Tungsten-Rhenium

Protocol number:	M0098115
Industry:	Metallurgy, Mechanochemistry
Feed Size:	4 mm
Desired Fineness:	63-160 µm
Quantity:	0,5 kg
Recommendation:	For a constant feeding of sample, we recommend using a Disk Mill PULVERISETTE 13. Because this type of alloy does not seems to be too brittle, we recommend a slower feeding speed of sample.

Result 1

	Disk Mill PULVERISETTE 13 classic line gap setting: 0,1 mm (smallest possible gap)
Equipment:	grinding disks made of hardened steel cast
Feed quantity:	489 g
Feed Size:	4 mm
Grinding time:	8 min
Final fineness:	49.6% > 160 µm 37.1% ≙ 63-160 µm
Comments:	The alloy of tungsten and rhenium seems to be brittle enough to get ground. A smearing between the disks when sample uses to be ductile was not observed. With a slower feeding speed ~ 60 g/min, sample can be ground with finest possible gap without problems. About 8 minutes have been needed to grind the 489 g of sample. Because ground particles only need to be < 100 µm in one dimension, it is possible to find particles with a length of up to 300 µm in the collecting vessel. To determine the fineness, we used our Vibratory Sieve Shaker ANALYSETTE 3 Pro and sieved an aliquot of sample with the test sieves of 63 µm and 160 µm. Already 37,1 % of sample use to be in the desired range. Still 49,6 % of sample uses to be > 160 µm and might be fed a second time after separation of the desired range. Also a Vibrating Cup Mill PULVERISETTE 9 might be capable for a batch wise grinding of sample.