General appearance and composition:
MR®-System “Hot” consists of:
- MR® 68 H Penetrant red, system “hot” solvent removable penetrant red without AZO-dye-stuff
- MR® 91 H Remover, system “hot” special remover for „Hot“-testing mixture of hydrocarbons with special additives
- MR® 70 H Developer white, system “hot” special developer for „Hot“-testing hydrocarbon based carrier medium with special, modified solid components.
- The system is suitable for work piece temperatures between +50 °C and +200°C
Relevant approvals and specifications:
- Sample testing acc. to EN ISO 3452-2:2006 and EN ISO 3452-5:2009
Sensitivity class 2, System IIICe
Penetrant: MR® 68 H
Remover: MR® 91 H
Developer: MR® 70 H
- Low content of halogens and sulphur according to DIN EN ISO 3452-2:2006 and ASME Code V, Section V, Article 6
Application:
- Check work piece temperature, e.g. by using our MR® Infrared-Thermometer.
- Remove tinder, rust and other contaminations from surface in a suitable manner.
- Apply MR® 68 H Penetrant red to the part to be tested either by spraying or brushing.
Duration of
Penetration time: MR® 68 H = ca. 5 min
Developer time: MR® 70 H = ca. 5 min
The test equipment shall be selected by specifying a reasonable reference to the manufactures recommendations on the process parameters according to the type of application.
- Remove excess penetrant from surface with a lint-free cloth witch is soaked in MR® 91 H Remover.
- Spray MR® 70 H Developer white, system “hot” from a distance of approx. 20 cm on the dry surface, achieving a thin, uniform layer. Discontinuities will appear as red indications. Please note: If the developer layer is too thick tiny discontinuities will not appear through the developer.
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