| abstract |
The invention belongs to the technical field of metal surface coating, in particular to a metal surface coating process, comprising the following process steps: metal treatment, comprising the following steps: preparing a degreasing agent, weighing a surfactant, trisodium phosphate, phosphate, boron acid salt, octylphenol polyvinyl ether, heat up to 60‑80℃, stir and mix, stir for 1‑2h, and cool to obtain a degreaser; for chemical degreasing, immerse the metal in the degreaser to remove oil at room temperature for 5‑ 8 minutes; ultrasonically clean the metal with alcohol, ultrasonically treat it for 15-20min, and leave it at room temperature for 2-3h; sandblasting, using quartz sand for sandblasting; Clean, prevent the metal surface stains from contaminating the coating, improve the anti-oxidation performance of the coating itself, and improve the service life of the tool metal. At the same time, it can effectively avoid bacterial contamination, improve the cleanliness of the coating, and improve the quality of the metal. |