A surface treatment method and device for cemented carbide material

Abstract

The first aspect of the present invention provides a surface treatment method for a cemented carbide material, wherein the constituent phases of the cemented carbide material include a hardening phase and a bonding phase, wherein the electrolytic oxidation rate of the bonding phase is greater than the electrolytic oxidation rate of the hardening phase, and the method comprises: immersing the cemented carbide material in an electrolyte, and performing electrolytic polishing and electroplating polishing alternately. Preferably, deposition ions are added to the electrolyte, and the deposition ions include at least one metal cation that is the same as the constituent element of the bonding phase. This solution adds an electroplating process to the conventional electrochemical mechanical polishing process, so that electrolysis and electroplating are performed alternately, and the pits on the surface of the material caused by the faster oxidation of the bonding phase are compensated by the electroplating process, and the process is simple and the treatment effect is good. The second aspect of the present invention provides a surface treatment device for a cemented carbide material, wherein the device comprises an auxiliary electrode, an electrolyte tank, and an electrode alternating module, and the electrical properties of the cemented carbide material and the auxiliary electrode are alternately alternating, so that the cemented carbide material is alternately electropolished and electroplated.

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