Preparation method of metal surface ceramic coating

The invention discloses a preparation method of a metal surface ceramic coating, and relates to the technical field of metal processing, the preparation method of the metal surface ceramic coating comprises the following steps: 1, mixing materials; step 2, gelation is carried out; step 3, drying; step 4, sintering; the first step comprises the steps that required metal or nonmetal alkoxide or organic acid is dissolved in a proper solvent, mixing is conducted through a mixing device, and finally a uniform solution is formed; the second step comprises the step of adding a catalyst and an initiator into the sol, so that molecules in the sol are subjected to a polymerization reaction, and gel with a three-dimensional network structure is formed. The solution is heated while being mixed, the heating temperature is controlled in real time, and the heating and stirring time is accurate, so that the solution is mixed more sufficiently, and meanwhile, the drying temperature is strictly controlled in the drying process