Industry experiment & effect of oxidation resistance coating for steel slab

In this paper, spraying test were conducted twice before steel slabs were put into the furnace; the effects of the oxidation resistance coating were investigated and verified. By comparing the change of slab weight, rolling force of the roughing mill (RM) and finishing mill (FM), thickness of oxide film on the surface slabs by an XL-30 SEM and acid pickling speed of slabs with and without coating, it was found that the oxidization waste in the furnace decreased by 40% with the use of the coating and the corresponding yield capacity could increase by 0.2% at least. Besides, the thickness of oxide scale film on hot rolled products was reduced by 1.44 micrometers and the acid pickling time was shortened by 6s with the coating technology; while the total rolling force of RM and FM did not changed. Furthermore, the application prospect of this technology was also discussed in this paper.