Preparation method for coating on electrolytic aluminum prebaked anode steel claw

The invention relates to a preparation method for a coating on an electrolytic aluminum prebaked anode steel claw, which belongs to the technical field of metallurgical materials. The method comprises the following steps: removing dirt on the surface of the electrolytic aluminum prebaked anode steel claw through polishing, cleaning and drying the electrolytic aluminum prebaked anode steel claw and successively removing oil by using an oil removal agent and removing rust by using acid; subjecting the pretreated electrolytic aluminum prebaked anode steel claw to hot dip aluminum plating or fused salt electrolysis titanizing; and finally, carrying out micro-arc oxidation on the electrolytic aluminum prebaked anode steel claw treated by any method in a NaSiO3 solution, NaOH solution, NaH2PO4 solution or Na2SiO3 solution by using constant-current electrolysis so as to prepare the oxidation-resistant corrosion-resistant electrolytic aluminum prebaked anode steel claw treated by using a hot dip aluminum plating or fused salt electrolysis titanizing method and a micro-arc oxidation method. The preparation method provided by the invention overcomes the problems of high-temperature oxidation consumption of the anode steel claw and corrosion of electrolyte cryolite.