22/11/2021
After a stainless steel surface has been heated beyond 400°C then it will start to oxidise and exhibit heat oxides colours. Sources of heat includes; welding operation, straightening operations, thermal heat treatments such as annealing or stress relieving.
These areas are both unsightly and potential corrosion sites.
The HAZ around the area can be removed either mechanically or chemically.
Pickling is a very useful operation since it's quick and can deal with complicated shaped objects employing methods such as Immersion pickling in a bath or vat, circulation using a liquid around a pipe system - closed loop type, Spray pickling using a GEL pickle product (see Enerjex product range) which will stick to the surface once applied by spray applicator.
Pickling can be done either in-house at our 75,000ft² undercover Manchester facility or on your site anywhere in the world.
It has be to understood that once a stainless steel surface has been heated beyond 400°C then it will start to oxidise and exhibit heat oxides colours. Sourc...
