Is táirge é pláta cruach dhosmálta i ndáiríre nach bhfuil seans maith le creimeadh. Mura rud é gur cás tromchúiseach é, ní féidir aon táirge a chosaint ó chreimeadh. Má tá ár pláta cruach dhosmálta creimthe, féadfaidh sé difear a dhéanamh ar a normáltacht. Úsáid, mar sin ní mór dúinn fós roinnt bearta coisctheacha a ghlacadh chun an cás seo a sheachaint. Tuigimid ar dtús cad iad na fachtóirí is cúis le creimeadh plátaí cruach dhosmálta?
一) Electrochemical corrosion
The scratches caused by the contact of the stainless steel sheet with the carbon steel parts, and then form a galvanic cell with the corrosive medium, which will cause electrochemical corrosion. If the pickling passivation effect is not good, the passivation film on the surface of the plate will be uneven or too thin, which will easily cause electrochemical corrosion, cutting slag, splash and other rusty substances to adhere to the plate, and then form with corrosive media The primary battery, which produces electrochemical corrosion. Unclean pickling passivation cleaning results in chemical corrosion products between the remaining pickling passivation residue and the plate, and then electrochemical corrosion with the plate.
2) Chemical corrosion
Under certain conditions, a lot of oil, dust, acid, alkali, salt, etc. adhering to the surface of the stainless steel sheet will be converted into corrosive media and chemically react with some components in the sheet, resulting in chemical corrosion and rust. The cleaning and pickling passivation is not clean enough to cause residual liquid to be retained, which directly corrodes the plate. The surface of the plate is scratched, which leads to the destruction of the passivation film. Therefore, the protective ability of the plate is reduced, and it is easy to react with chemical media, causing chemical corrosion and rust.