Every time take it would be invented hand stick on a layer of black and it's difficult to wash away.
This might involve chemical field. Caused by such as iron and steel in salt, acid, etc. But what my basin of stainless steel used for a long time, does not have this kind of phenomenon. So you have inferior stainless steel dish hair black.
There would be no the dips in with sponge wash detergent scrub to fell.
Stainless steel dish hair black may be due to the material contains several kinds of materials can be corrosive separation of the body, and can't dissolve. Several other metal, such as some more aluminum iron containing silicon, will also have the same black ash after corrosion. Low nickel stainless steel type 201, use of ferric chloride corrosion liquid corrosion, the corrosion surface with a layer of black ash like oil, get up, the ash on the clothes are not easy to get rid of.
The emergence of this layer of black ash is due to the material contains several corrosion material can only be separated the body, and can't dissolve. Several other metal, such as some more aluminum iron containing silicon, will also have the same black ash after corrosion. Low nickel stainless steel type 201, use of ferric chloride corrosion liquid corrosion, the corrosion surface with a layer of black ash like oil, get up, the ash on the clothes are not easy to get rid of. Solution has three: one is the replacement of base material, such as more expensive 304 stainless steel, there is no this kind of phenomenon; 2 it is to change the formula of corrosion or on the basis of the original party can add melt black ash material; Three is in the normal corrosion, with a kind of complex water wash or remove ash liquid black ash. However, large areas of corrosion ash removing, cost is not low, therefore, to ash liquid is most suitable for small area corrosion is the spiral corrosion after black ash removal.
