This follows the publication of a new ISO standard for flow analysis of metal powder mixes.
The new method, Flow Gustavsson (ISO 13517:2013), was implemented on 1 September and has since, after customer approval, been used to analyse the flow rate on all new customer mixes. It is named after its main developer, Höganäs quality control manager Stefan Gustavsson.
“The main technical difference between the two methods is that the cone angle for Flow Gustavsson is 30° which is half the angle of Flow Hall,” said Georgia Gahnsby, Höganäs global development.
The change from the Flow Hall (ISO 4490) method to Flow Gustavsson only concerns the method of analysis, and does not affect the quality of the mixes in any way. The mass flow provides continuous flow and eliminates the formation of rat holes observed in the Hall funnel flow.
Since the inclination for flow stop is much smaller with Flow Gustavsson, the method can be used to measure a wider range of powder mixes and it is better suited for characterisation of press-ready mixes. Flow Hall will continue to be used for powders not containing any additives.
Read more about the new method here (pdf).
