Standard grades, such as 304 and 316: Mix 1 part Pickling Dip Liquid into 3 patrs of water. A further dilution can be done if longer pickling timesc an be accepted. High-alloyed grades, such as duplex grades (2205) and austenitic grades (904 L) for use in severe corrosive conditions: Mix 1 part of Pickling Dip Liquid in to 2 parts of water. Very high alloyed grades, such as super-austenitic (254 SMO) and super-duplex (2507) grades: Mix 1 part of Pickling Dip Liquid into 1 part of water.
1. Before first time use. Make the solution by adding the Pickling Dip Liquid to the water, not the other way round! The proportions depend on the steel to be pickled.
2. Pre-clean the objects to remove grease and oil before pickling by using RXSOL DEGREASER.
3. Place the product in the pickling bath.
4. Allow sufficient pickling time. Use 5 min to 4 hours depending on temperature, steel grade, condition of the Pickling Dip Liquid etc.
5. Rinse with high-pressure water jet after pickling.
6. Analyse the Pickling Dip Liquid content of acids and free metals regularly to maintain optimal Pickling Dip Liquid composition.
Using Procedure
|
Stainless Steel Grade |
Examples |
Dilution Ratio (Pickling Dip Liquid : Water) |
Notes |
|
Standard Grades |
304, 316 |
1 : 3 |
Can be further diluted if longer pickling time is acceptable |
|
High-Alloyed Grades |
Duplex (2205), Austenitic (904L) |
1 : 2 |
Suitable for severe corrosive conditions |
|
Very High Alloyed Grades |
Super-Austenitic (254 SMO), Super-Duplex (2507) |
1 : 1 |
For extremely demanding corrosive environments |