Why does stainless steel kitchen equipment rust?

After we bought stainless steel kitchen equipment, we found that the stainless steel equipment rusted after using it for a period of time. What's going on? Today, the editor will take you to understand the reasons why stainless steel kitchen equipment rusts. Reasons for rusting of stainless steel kitchen equipment 1. Decoration impurities: alkaline water, lime water, oil stains, etc. on the decorative wall remain on the surface of stainless steel. If they are not cleaned in time, they will cause local corrosion and rust. 2. Iron items: Long-term use of iron tools such as nails and wires for stainless steel sinks will cause surface rust and rashes. 3. Organic juice 1) Baking: The composition of the flame heating area changes unevenly with the metallographic structure, forming a primary battery with the corrosive medium and causing electrochemical corrosion. 2) Welding: Physical defects (bite edge, pores, cracks, lack of fusion, incomplete penetration, etc.) and chemical defects (coarse grains, grain boundary chromium depletion, segregation, etc.) in the welding area form a primary battery with the corrosive medium and cause electrochemical corrosion. 3) Passivation: The pickling passivation effect is not good, resulting in uneven or thin passivation film on the surface of stainless steel, which is easy to cause electrochemical corrosion. 4) Materials: The chemical defects of stainless steel materials (uneven composition, S, P impurities, etc.) and physical defects on the surface (looseness, sand holes, cracks, etc.) are conducive to forming a primary battery with the corrosive medium and causing electrochemical corrosion. 5) Cleaning: The remaining acid pickling passivation residual liquid and the products of chemical corrosion of stainless steel and stainless steel parts form electrochemical corrosion. 4. Metal dust: When decorating a house with minerals or acid and alkali metal dust, the surface of stainless steel will encounter moisture and stainless steel condensate, which will cause electrochemical reactions to form spots and rust. 5. Water pipe impurities: The new house is decorated with iron filings and rusty water. When these impurities stay on the surface of stainless steel and are not rinsed in time, rust will appear. 6. The impact of building material renovation on the surface of stainless steel: Although stainless steel is corrosion-resistant, it is non-toxic and non-invasive. Experiments have shown that impurity residue water, cement, lime oil, paint, metal dust, etc. have a greater impact on the surface of the sink. To sum up: the above is what SHINELONG editors share with you about why stainless steel kitchen equipment rusts. If you are interested in SHINELONG commercial kitchen equipment, you can pay attention to and consult SHINELONG online customer service. We will have professional technicians to introduce you in detail. The editor will update relevant information from time to time.