So what is a sink roll cut?How is it?Sink roll cut is strip and sinking in the mutual movement between the two do not match the speed, the relative sliding, the strip surface is sink roll roll surface scratch.Specifically, is from the annealing furnace furnace nasal strip in hot dip galvanized zinc pot, and go through sink roll to zinc pot, because of the special position sink roll in liquid zinc, unfavorable to install motor drive, so most of the sink roll is a passive roll, completely on the strip surface sinking and sinking roller roller surface friction between roller and strip with speed movement;But sometimes due to mechanical equipment, production process control, the use of the sink roll, the influence of such factors causing transmission between strip and sinking roller friction force is insufficient, strip and sinking relative sliding roller, and then the hot dip galvanized products produced the sinking of the cut surface defects.