Flowability

Both the Hausner Ratio and Carr Index reduce bulk and tapped density to a single number. The mechanism behind that number, whether aeration, particle shape, or surface cohesion, determines whether it supports a process decision or actively misleads one.

The same screw feeder at the same speed can deliver consistently on one powder and drift by several percent on another. The difference lies in compressibility, wall friction, and cohesion, and in how bulk density shifts as the hopper empties.

Temperature shifts surface energy, contact compliance, and residual moisture state in ways that can reverse a powder's ambient flow behavior. This Insight explains the dominant mechanisms across three temperature ranges and what elevated-temperature testing reveals for SLS powder beds, spray dryer outlets, and heated conveying systems.

Sintered contacts, additive manufactured heat exchangers, EV motor components, and conductive pastes each require a different copper powder. This article explains why morphology, particle size distribution, oxygen content, and packing density are engineering variables, and how to specify them correctly for electrification applications.

Vibration can improve powder discharge when it breaks a weak arch or [...]

Dust suppression oil can reduce airborne calcium carbonate dust, but it may [...]

Powder residence time matters because the sample and the failure often describe [...]

Do not diagnose a feeder as if the hopper sends it one [...]

Powder instability after conveying, filling, or transfer is often treated as [...]

Real-time particle characterization is moving powder processing from delayed laboratory checks toward [...]

Fine powder fluidization can support controlled pneumatic conveying, especially in dense phase [...]

A powder operating window defines the process conditions in which a [...]