← Glossary

Developer Application Time

The time during which a penetrant is drawn into a crack. For accurate dye penetrant testing, the development time must be strictly observed.

Physical-Chemical Mechanism of Action

The penetrant reacts chemically with the metal and forms a visible color. The development time determines how long the penetrant is drawn out to achieve a uniform indication.

Metallurgical Relevance & Risks in Welding

Inaccurate development time can lead to imprecise color changes. This affects the sharpness of the indication and can cause cracks to be missed or misjudged.

Workshop Practice & Instructions

The development time should be strictly followed per manufacturer's instructions. In a typical dye penetrant test, the development time is usually 10 to 30 minutes, depending on the penetrant used and crack size.

MetallurgieSchweißtechnik

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