DP-55 Red Dye Penetrant

كمية DP-55 Red Dye Penetrant

إضافة إلى السلة

Add to quote

Product added to quote

View/Send Quote Request

الوصف

DP-55 Properties

DP-55 is a red dye penetrant, Type 2, Methods A and C, Level 2 according to AMS 2644 and ISO 3542-2. This product is water washable, resistant to over washing and used to search for surface defects.

Instructions for use:

Preparation and application

• Surface must be free of contaminants, even inside flaws. Use adequate methods to remove oxides, paints, oils, water, etc…
• Prior to applying penetrant, wipe out with degreaser N120 or DR-62 and rags. Allow 2 minutes for complete evaporation.
• Apply penetrant by any adequate means (spraying, brushing, flowing, dipping, etc…)

Dwell Time

20 minutes are recommended. Dwell time may be shortened down to 10 minutes when only large cracks are sought for, or extended up to several hours for tight cracks.

Excess of penetrant removal:

This is a delicate operation. Remove the excess penetrant from the surface, being careful not to touch the penetrant tapped in the defects. DP-55 is easy to wash off with sprayed water; never dip the parts in water. Rinse under low pressure (30 to 150 kPa), with the nozzle of gun 30 to 40 cm from the part, during the shortest time possible, until the red background disappears. If a red background remains on particularly coarse parts, clean it off with a N106A wipe or DR-60, then rinse again within 30 seconds.

If you can’t or don’t want to use water, carry out the following procedure (and not any other).
– Wipe off the excess of penetrant from the surface using clean rags.
– Using rags lightly moisturised with N106A or DR-60, wipe again.
– As a final step, wipe with clean, dry rags.
The removal of excess DP-55 penetrant with a cloth can also be carried out, if necessary, by replacing the solvent with water, paying attention to possible over-washing.

Drying:

After rinsing, dry either through natural evaporation, or preferably though hot air circulation (80°C maximum). If you wipe the part, do so with clean cloths that are not too absorbing, preferably by dabbing the part.

Applying the developer:

When moisture has evaporated, apply one of the mentioned developers (spray only).

Inspection:

Some 10 minutes after the developer has dried, you may inspect the part: the defects appear on the white background in the form of red spots (blowholes, porosities, etc.) or red lines (cracks, defective welds, shocks, etc.). Longer development time (30 minutes, and even perhaps several hours) can allow
you to detect extremely small defects.

Viewing conditions:

Parts shall be inspected as per ISO 3059 standard requirements.
Inspection is better off when using a cool white light, colour temperature being more than 4500K and colour rendition index more than 80 or light with an illuminating index of D65. It is recommended NOT TO USE under-voltage incandescent bulbs, as it often happens with battery-operated units, this
giving a yellowish light.

Appearance	Red Liquid
Flash Point	> 60°C
Temperature Range	0°C – 50°C

DP-55 is available in Case of 12x500ml Aerosol

Request a free quote today or view the TDS.