I and my team members are developing a table top V-blender machine for metal powder mixing purpose. What is the main performances parameter to test and determine the machine reliability?
Please check answers to a somewhat related question ― «How do the angles of V-Blender tumbler affect powder mixing operations?»: https://www.researchgate.net/post/How_do_the_angles_of_V-Blender_tumbler_affect_powder_mixing_operations
The following relationship is proposed for selecting (or predicting) a suitable rotating speed (ω) for a V-shaped tumble blender as a function of the angle of repose of the well-mixed powder (θ): ω = ω*·(ωmin/ω*)p. Here, the auxiliary factor ω* ≡ 1 rot/min is included just for dimensional reasons, ωmin is the lowest rotating speed considered acceptable for practical use. For a typical blender of medium capacity we may reasonably consider ωmin = 5 rot/min. Lower tumbling rates may possibly be found acceptable for blenders of the highest capacities; while the lowest acceptable tumbling speed may possibly be somewhat higher for the smallest blenders. The exponent p is defined as p ≡ θmax/θ, where θmax denotes the maximum angle of repose, which corresponds to the powders of the poorest flowability that can be mixed with this kind of mixer with acceptable efficiency. We may quite reasonably consider θmax = 50º. Powders of excellent flowability, say with angle of repose of around θmin = 25º, which may be taken as minimum, can be mixed at the highest rotating speed ωmax = 25 rot/min. It can be noticed that 1 ≤ p ≤ 2.
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