DPCNEWS 071 - Terminology discrepancies between ISO and ASTM standards - Excessive magnetic particles concentration - A tried and true developer?

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DPCNews
Written by Dubosc
Monday, 25 May 2015 19:21

In the front page this month| June - July - August 2015

[EDITO] Terminology discrepancies between ISO and ASTM standards

[NEWS] Excessive magnetic particles concentration

[OLDIES BUT GOODIES] A tried and true developer?


[EDITO]

Terminology discrepancies between ISO and ASTM standards

In our December 2013 Editorial, we reported that with regard to penetrant testing (PT) and magnetic particle testing (MT), there were some differences between the EN/ISO standards and the ASTM E1316 standard and we provided some examples.
Other differences exist, mainly about the name and the abbreviated term of some NDT methods, as shown.

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[NEWS]

Excessive magnetic particles concentration

We got an interesting question, a very practical and “basic” one. Basic, yes, at first sight. In fact, not that basic at all!!!
The question came as: what is a good indicator that the magnetic particle concentration in a magnetic ink was excessive?

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[OLDIES BUT GOODIES]

A tried and true developer?

Users are never short of ideas!
We got a phone call from a Services Company:
"One of our customers wants to use a colour contrast penetrant with a wet developer. They have mixed dry developer with water at room temperature. They use a "garden-spray" (used to spray chemicals on flowers, plants, etc.) to spray this product on the part after excess of penetrant removal. They do not understand why there are red drips, why the layer is quite thick, why water does not evaporate. Why they do not succeed?"

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Last Updated ( Monday, 25 May 2015 19:52 )