Polishing method of metal workpieces

The invention provides a polishing method of metal workpieces, and belongs to the technical field of metal surface treatment. The polishing method comprises the following technological steps that (1)the metal workpieces are grinded by using a grinding brush, a grinding fluid is sprayed on the metal workpieces while grinding is conducted; (2) the metal workpieces are naturally air-dried after grinding; (3) under a room temperature and a work voltage, taking the metal workpieces as an anode and graphite as a cathode, the metal workpieces are placed into an electrolyte for being treated for 1-5minutes; and (4) the metal workpieces after electrolysis are dried through wiping by using a non-woven cloth. According to the polishing method of the metal workpieces, design is reasonable, surface polishing of the metal workpieces can be effectively realized, and the surfaces of the workpieces are uniform in appearance, have no different color or have slight color difference when the surfaces ofall the workpieces are obs