DUBL-CHEK ER-83A

Method D Emulsifier

Low to near zero background for assured indication visibility.
Clean, odorless product, vapor free atmosphere.
Minimises the risk of over – emulsification.
Large useable concentration range.

DESCRIPTION

ER-83A is a hydrophilic emulsifier used diluted with water to emulsify Sherwin’s non water washable penetrants. ER-83A removes surface, non-water washable penetrants by spray or immersion. It complies with low sulfur, low halogen, and low-sodium requirements.

APPLICATION AREAS

No information

DIRECTIONS FOR USE

1. Application: Apply non-water washable penetrant only to clean, dry surfaces by spraying, flowing, brushing or dipping.

2. Dwell Time: A 10-minute dwell time is suggested, although in many cases five minutes will suffice. When particularly tight cracks are suspected, or the part is especially critical, the dwell time may be extended to 30 minutes, or longer. Allow the penetrant to drain from the part surface back into the penetrant tank to conserve material.

3. Removal:

a. Immersion Method:

i. Pre-wash: Following the dwell use a plain water rinse to remove most of the undrained penetrant from the surface. Use coarse spray ambient temperature water.

ii. Immersion: Immerse and agitate the part in a 20 to 30% emulsifier solution. Immersion time and agitation will vary with part geometry and surface condition

iii. Rinse: Remove the part from the tank; clean with a course, plain water spray.

b. Spray Method:

i. Wash: Following the dwell, use an injection of 0.1 to 5.0% emulsifier solution to wash the excess penetrant from the part surface. Time and solution concentration will vary with part geometry and surface conditions.

ii. Rinse: Use a coarse plain water spray to remove all traces of the emulsified penetrant.

4. Drying: A re-circulating oven set no higher than 1600F (710C) is suggested. Leave the part in the oven just long enough to evaporate surface moisture. Drying is improved by using pressurized air to disperse and remove as much excess water as possible before placing the part into the oven.

5. Developing: Apply the developer by cloud dusting, spray or dip using the appropriate developer. Flaw marks are visible under appropriate lighting almost immediately but allow sufficient developing time to enhance the flaw visibility.

6. Inspection: Inspect parts under appropriate light.