Because of its beautiful appearance, strong and durable, stainless steel bar grating is mostly used in some decorative projects or places with harsh corrosive conditions. Today I will explain to you the polishing process of stainless steel grating.
Since the stainless steel bar grating needs to be welded together in the production process, there will be black spots at the welding contact points, and polishing is for these welding black spots.
Currently commonly used methods are: electrolytic polishing, electrochemical polishing, mechanical polishing
The electrochemical polishing process is divided into two steps:
(1) Macroscopic leveling: the dissolved products diffuse into the electrolyte, and the geometric roughness of the material surface decreases;
(2) Low light leveling: Anodized, the surface brightness is improved.
Electrolytic polishing: use acidic electrolyte (strong acid), put the sample to be thrown into the back current (about 7mA), and the anode will dissolve. Due to the size of the current, those protruding parts will dissolve faster, and the surface tends to be flat to achieve the final result. The effect of polishing (the effect can be seen within about 10 minutes). The basic principle of electrolytic polishing: the same as chemical polishing, that is, by selectively dissolving the tiny protrusions on the surface of the material to make the surface smooth. Compared with chemical polishing, the influence of cathode reaction can be eliminated, and the effect is better.
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