304 stainless steel basin why there will be rust at the bottom
Stainless steel is not never rusty, but also a long time.
Processing methods: 1) to the local electromechanical market, buy stainless steel passivation paste (method to sell stainless steel passivation cream will tell you); 2) and then with 360 # crystal sand (water sand skin) rub; 3) Wheel polishing
Rust causes: after a variety of thermal processing (after welding), after cold processing, will be in its internal generation of a high chromium carbide: Cr23C6, it will lead to the surrounding matrix tissue chromium content significantly reduced, thus So that the substrate electrode potential drop, the corrosion resistance will be reduced, once the tidal air contact will appear rust
