Steel substrates, castings, joints and the examination of welded joints with PT-2 examination material.
Equipment type: penetrative chemicals:
Among the non-destructive methods of material examination is the examination of ruptures with fluid penetration, to show open pores on the surface, ruptures, and other continuity errors. This method of examination has been known for a long time. Forty years or so ago the first marker liquids that were developed for this purpose began to appear on the market, and since then the fluid penetration examination method has been steadily improving, and a regulation system and a standardisation evolved, in this way it has come to hold a definite place among the methods of examining materials. The benefit of this method of examination is primarily in the relative ease with which it may be carried out. It does not require an expensive investment, nor special tools, nor a specific location, because it can be performed anywhere. Magnetisable and non-magnetisable materials can equally be measured, even non iron metals, plastics, glass, etc. It can be done on a surface of any geometry. It’s disadvantage is that it only displays those faults that are open to the surface, and the examination temperature must be between +5° and +50°C.