what is slitting
Coil Processing, Slitting & Shearing. Slitting is a type of metal cutting process where large rolls, or coils, of sheet metal stock are cut using extremely sharp rotary blades.In metal slitting, straight lines are cut lengthwise into the large coil to create strips of metal that are narrower in width.As the coil runs through the slitter, circular blades â one upper, the other lower â make the cuts.n metal slitting, straight lines are cut lengthwise into the large coil to create strips of metal that are narrower in width. As the coil runs through the slitter, circular blades â one upper, the other lower â make the cuts.