Description about polished plate surface
#3 / No.3 - (0.4 ~ 3.0mm) 100 # ~ 130 # (line discontinuous, coarse sand)
#4 / No.4 - (0.4 ~ 3.0mm) 150 # ~ 180 # (line discontinuous, fine sand)
#5 / No.5 - (0.4 ~ 3.0mm) 320 # (finer than No. 4)
HL /hair line - (0.4 ~ 3.0mm) 150 # ~ 320 # (line continuous, commonly known as straight hair, hair silk surface, the general use of 240 # grind)
Simple Description about polished stainless steel plate
For the flat Stainless steel, usually be polished as sheets also mean the thin thickness one, but sometime the thicker plate be need be polished for special application. And most of plate be polished by mechanical polishing way
Stainless steel commonly used polishing method：
Currently commonly used methods are: electrolytic polishing, electrochemical polishing, mechanical polishing
The electrochemical polishing process is divided into two steps: (1) Macro leveling: the dissolved product diffuses into the electrolyte, and the surface roughness of the material decreases, Ral μm. (2) Low-light leveling: Anodic polarization, surface brightness is improved.
Electrolytic polishing: using an acidic electrolyte (strong acid), the sample to be polished is placed in a post-current (about 7 mA), and the anode is dissolved. Due to the magnitude of the current, the protruding portions dissolve more quickly, and the surface tends to be flat, reaching the final Polished effect (the effect can be seen within about 10 minutes). The basic principle of electropolishing: the same as chemical polishing, that is, by selectively dissolving the tiny convex part of the surface of the material to make the surface smooth. Compared with chemical polishing, the effect of the cathode reaction can be eliminated, and the effect is better.
Mechanical polishing: For the rough surface of the stainless steel plate to achieve the decorative effect must be: the roller frame is polished with a belt polishing machine, first with 120# abrasive belt, throw the surface color one to the time, change the 240# abrasive belt, throw it to the surface When the color is up, change the 800# abrasive belt and throw it to the surface color one time. Then change the 1200# abrasive belt and throw the effect of decorating the stainless steel plate.