We now offer Non-Destructive Testing Services by PCN qualified personnel-including a consultancy service which offers the draughting of welding procedures and qualifications. This is in tandem with our ability to impart our knowledge of the welding industry to any of your welding requirements.
Services include:
NON DESTRUCTIVE TESTING-at customer premises or at our own.
DYE Penetrant Inspection/Fluorescent Black Light Inspection
Dye Penetrant Inspection, also known as Penetrant Testing (PT), Liquid Penetrant Inspection (LPI) or Fluorescent Penetrant Inspection (FPI). It is a method that is used to reveal surface breaking flaws by bleed out of a coloured or fluorescent dye from the flaw. Dye Penetrant Inspection can be used on almost any non-porous material. The technique of Dye Penetrant Inspection is based on the ability of a liquid to be drawn into a clean surface-braking flaw by capillary action. After a period of penetration time, excess surface penetrant is removed and a developer applied. This draws the penetrant from the flaw to reveal its presence. Colour contrast penetrant requires good white light while fluorescents need to be used in darkened conditions with an ultra violet light (Also known as Black Light). It is essential that the material is carefully cleaned first, other wise the Dye Penetrant Inspection penetrant will not be able to enter the defect. If surface penetrant is not fully removed, misleading indications will result.
Magnetic Particle Inspection
MPI also known as Crack Testing is a method that can be used to find surface and near surface flaws in ferromagnetic materials such as steel and iron it is primarily used for crack detection. During MPI Testing the specimen is magnetised either locally or overall and if the material is sound the magnetic flux is predominantly inside the material. If however during the Magnetic Particle Testing there is a surface-breaking flaw, the magnetic field is distorted, causing local magnetic flux leakage around the flaw. This leakage flux is displayed by covering the surface with very fine iron particles applied either dry or suspended in a liquid. The particles accumulate at the regions of flux leakage, producing a build-up, which can be seen visually even when the crack opening is very narrow. Thus, during MPI Testing a crack is indicated as a line of iron powder particles on the surface.
WELDING PROCEDURE DRAUGHTING-to UK and American standards
FULL CONSULTANCY SERVICE-by qualified welding engineer
We now offer Non-Destructive Testing Services by PCN qualified personnel-including a consultancy service which offers the draughting of welding procedures and qualifications. This is in tandem with our ability to impart our knowledge of the welding industry to any of your welding requirements.