Ardrox® 9702

Ardrox® 9702 can be used for metals and ceramics which are not strongly porous, during production and maintenance works. They are appropriate for various applications such as aerospace other high specification industries thanks to a large number of approvals and conformances.

Ardrox® 9702 are usually used in conjunction with the Ardrox® 9D4A or 9D1B developer and the Ardrox surface technologies. They are also approved to the AMS 2644 as Method C, solvent removable penetrants.

Ardrox® 9702 may be applied by brushing, tank immersion or by electrostatic or conventional spraying. The following typical process sequence illustrates the recommended method of use for general industrial applications. However, where relevant, the process specifications of the approving authorities must be followed.

Pre-Cleaning

All surface contamination such as rust, paint residues, grease, scale etc. must be completely removed. Ensure that the component is completely dry and not too hot or cold (10-50°C / 50- 122°F).

Penetrant Application

Apply penetrant to the surface and leave for a suitable dwell period. Allow components to drain as necessary. The combined application and drainage period should be at least 10 minutes. If the drain time exceeds 1 hour, the penetrant should be re-applied to the surface.

Cleaning

Penetrant removal by water washing: 15–35°C (59–95°F) for 30 seconds up to 2 minutes at 0.8-1.7 bar (10-25 psi). In the case of rough surfaces or if products for higher sensitivity levels.

Use one or a combination of the following methods:

• Air agitated water rinse tank
• Spray rinse tank
• Manual spray rinse

The times given are a rough guide only. Practical trials should be carried out to find the optimum.

Drying

Dry in air recirculating oven at 50–60°C (122–140°F), typically for 10 minutes. Longer times may be required for larger components. To assist drying, either clean, filtered, low pressure, compressed air (1.7 bar/25 psi maximum) can be used prior to oven drying. Use the minimum oven time required to obtain thoroughly dry components.

Development

Apply developer Ardrox® 9D4A or Ardrox® 9D1B and allow 10 – 30 minutes developing time before evaluation.

Inspection

When applicable, low pressure, clean filtered air at 0.3 bar/5 psi (maximum) should be used to remove excess powder prior to inspection under black (UV) light, (1000 µW/cm² minimum) in a darkened area.

When Ardrox® 9702 are used in the prescribed manner, no significant corrosion is likely to occur on commonly used constructional metals.

These products may stain or soften some plastics and rubbers and, where appropriate, a compatibility test should be carried out.

Ardrox® 9702 are available as bulk material.