Sample assessment
Molybdenum powder was tested in multiple jar arrangements with a common median threshold. Atmosphere and media identity must remain specific to each arrangement. The laboratory test record documents this preparation only; applying the method to another batch requires a matched trial.
Recorded objective
Reach D50 at or below 2.2 µm.
Equipment and selection
The recorded planetary machine is XQM. The corresponding TENCAN family is the Vertical square planetary ball mill. The jar volume identifies the test container and does not establish an exact machine variant or production capacity. Equipment association follows the recorded machine designation.
Test setup
| Recorded planetary machine | XQM |
|---|---|
| Documented setup | 500 mL jars; primary setup stainless-steel vacuum jar with 15–3 mm agate balls and 250 g powder; dry milling; speed setting 450; evacuation followed by argon filling. |
| Recorded operating cycle | Run 5 / pause 1; units not stated in mode field |
Speed values are reproduced as recorded settings. A rotational unit and planetary-disc versus jar-speed basis are not stated, so these numbers are not labelled rpm.
Recorded procedure and results
For the 250 g vacuum-jar charge, 30 minutes gave D50 = 2.39 µm with the second source entry written as D90-3.33 µm; at 1 hour D50 = 2.1 µm and D90 = 2.77 µm. Another vacuum-jar run with 260 g gave 1.79/2.38 µm at 1 hour; its media composition is not explicitly restated. A polyurethane jar with agate balls and 270 g gave 1.9/2.5 µm at 1 hour, and a second polyurethane preparation gave 1.78/2.37 µm at 1 hour.
Interpretation
Each reported 1-hour median was below 2.2 µm. The 30-minute median was above the limit. The source’s malformed D90 notation is retained as a transcription issue instead of silently normalized.
Practical precautions
Keep the atmosphere and media details specific to each arrangement. Confirm the malformed percentile entry against the original analytical report and do not assume argon was used in the polyurethane trials.
TENCAN alternatives to evaluate
For follow-up comparison, consider the TENCAN Laboratory Full-Directional Planetary Ball Mill. For molybdenum powder, a matched QXQM trial can test whether changing orientation affects molybdenum D50 while keeping atmosphere and media fixed. Keep sample mass, media and sampling times controlled. This is a proposed comparison; the test record does not demonstrate a superior result for that alternative. Confirm jar compatibility and the permitted complete loaded mass before selecting a configuration.
Procedure records XQM; related product is the corresponding tested machine family. Exact variant is not inferred from jar size.
About this trial
TENCAN laboratory trial, 2025. Observations above come from this experimental record; selection considerations and proposed comparisons are engineering interpretation. Results apply to this sample and recorded conditions.