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How To Keep Stainless Steel From Rusting After Welding. Use butt welds instead. The chromium oxide is the layer that protects the stainless steel from rusting.
Removing Rust From Stainless Steel Stellar Solutions Stainless Steel Passivation from citrisurf.com
In stainless steel it typically takes 24 to 48 hours to achieve a uniform and stable passive layer but passivation can occur only in certain conditions. Unlike grinding this cleaning method will successfully remove all. The chromium oxide is the layer that protects the stainless steel from rusting.
The chromium oxide layer deteriorates under these conditions.
How do you clean after welding. Finish it off using polish on the stainless steel to give a gleaming finish. Unlike grinding this cleaning method will successfully remove all. Soaking the weld joint in a bath of nitric or hydrofluoric acid will remove the heat tint with ease.
