WB12 Fluorescent Ink

WB12 Fluorescent Ink quantity

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Description

Product Information

MAGNAGLO® WB12 is a liquid concentrate used to prepare water-based fluorescent inks for wet method magnetic particle testing. Inks made with WB-12 give clear bright yellow/green indications when viewed in a darkened area under UV(A) of peak wavelength 365 nm, and offer enhanced corrosion protection.

When used in conjunction with suitable magnetising equipment and a UV(A) source, WB12 inks will locate fine surface and slightly subsurface defects.

Supplied in 6× 1L bottles

Main features:

• Clear, bright indications under UV light
• High sensitivity
• Easy post-testing clean up
• Excellent fluorescent contrast for quick identification
• Excellent particle mobility
• Good dispersion stability
• Great concentration consistency
• Superior surface wetting
• Non-foaming
• Even surface coverage for better detection
• Good corrosion protection

Specification

• AMS3044
• ASME B & PV Code, Sec V
• ASTM E1444/E1444M
• EN ISO 9934-2
• GOST R ISO 9934-2-2011
• Rolls Royce RRP 58004 (CSS 231)
• SAE AS4792

Applications of WB12

Defect location: surface and slightly subsurface

Ideal for:

• Detecting very fine to fine discontinuities
• Machined parts
• Smooth surface finish
• Critical applications
• High volume testing
• After secondary processing
• Mixing with hard-water

Defect examples:

• Inclusions
• Seams
• Shrink cracks
• Tears
• Laps
• Flakes
• Welding defects
• Grinding cracks
• Quenching cracks
• Fatigue cracks

Composition of WB12

A mixture of fluorescent magnetic particles, a corrosion inhibitor, wetting agents and foam control additives.

Instructions for using WB12:

Clean the component before testing to provide a suitable test surface.

Use an appropriate measuring device to make up the ink bath based on the following guide volumes:

Quantity of WB12	Quantity of water
500ml	25L
750ml	37.5L
1L	50L

 

Once the bottle is empty, rinse it with water to capture any remaining product and add this to the bath. Mix thoroughly and check that the bath has the correct settlement volume of 0.1 – 0.4 ml (at 20 ml/litre, after one hour) before use.

Apply the ink by spraying, flooding or immersion, depending on your chosen method (see below).

Wet continuous method
Apply the ink to all surfaces of the component and apply a magnetising current. Remember to stop the flow of ink before the current is switched off, otherwise the force of the ink flood can wash away indications.

Wet residual method
This method is generally less sensitive than the continuous method and is more susceptible to rapid particle depletion and bath contamination.

• Pre-magnetise the part to be tested.
• Immerse the part in a bath of the ink.
• Remove it and allow it to drain.
• Inspect the part.

Be sure to agitate the ink before and regularly during use to ensure uniformity of mix. During use, the magnetic content of any ink will become depleted so you will need to check your bath strength at least once each day. The most widely used way of checking an ink’s settlement volume is by using a graduated ASTM pear-shaped centrifuge tube.

When the settlement volume approaches the lower limit, check the bath. If it appears contaminated, or if it has been in use for a long time, replace the contents. If it is still clean and uncontaminated, add either some more WB-12 OR some 14A particles to the bath.

As before, make sure that the ink is agitated immediately prior to use to ensure complete mixing of the contents.

After inspection, remember to completely demagnetise your components before cleaning, to ensure easy removal of any residual powder particles. Cleaned components can be treated with a temporary film protective coating if you need longer-lasting corrosion protection.

 Request a free quote for WB12.

 

Additional information

Manufacturer	Magnaflux