14A magnetic powder is made with a carefully optimized range of particle shapes and sizes that allow particles to move quickly and easily to indications without clumping. 14A is also designed with strong fluorescence to minimize background, which results in faster inspections with better reliability and greater confidence.
Developers enhance the visibility of penetrant indications by pulling penetrant from a surface open discontinuity and spreading the penetrant through the developer coating on the part surface. The penetrant indication may appear larger than its actual size as the penetrant spreads through the developer over time. Specifications state minimum and maximum development times to address the spread of penetrant through developer. The minimum development time should allow enough time for penetrant to be pulled from the surface open flaw and spread on the part surface for enhanced visibility. The maximum development time is in place to minimize excessive penetrant “bleed out” from an indication that could potentially obscure the indication.
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In this video we reveal common penetrant inspection misunderstandings we’ve seen in the field.
We kick-off with the following questions:
Step-by-step process listing everything from the equipment needed in magnetic particle testing and liquid penetrant testing to preparation for NDT audits.
GNB International Complete RT Film Digitizing Solution
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