How To Clean Up Stainless Steel After Welding. Unlike grinding this cleaning method will successfully remove all. Contamination occurs when stainless steel is subject to sparks or particles from nearby welding cutting drilling or grinding of carbon steel.
High temperatures A less common form of rusting occurs after the stainless steel has been exposed to very high temperatures in the 7501550F range. It does make life a little easier depending on how dirty it is. The best way to clean stainless steel after welding is through a process called electropolishing.
Electropolishing will also remove heat discoloration and render the surface more corrosion resistant then passivation or pickling alone.
Stands with green knife makers rouge and a wire wheel with004 wires on it. Click to read more about these methods. The nitric acid used in these treatments will also leave the steel surface in the passive condition. That may well prompt pre weld grinding to clean your stainless steel.