Medical titanium rod Its disadvantages are poor wear resistance and pitted surface. At present, it is difficult to apply to sliding mechanical parts. Titanium alloy bar processing manufacturers are currently researching and developing various surface treatment methods. The methods applicable to titanium surface treatment include wet coating method represented by Cr and Ni plating, thermal diffusion method, surfacing method and sputtering method. The more advanced methods of Z are CVD, PVD and PCVD surface strengthening methods. 1. Wet coating: Cr and Ni-P plating methods are mainly used (it is difficult to directly plating Cr on titanium rod, usually Ni is plated on titanium rod first, then Cr is plated. Electrolytic method has fast film forming speed, thickness of several microns, (decorative coating is only 1um). It is an effective wear-resistant surface treatment method. 2. Thermal diffusion method: it is widely used for carburizing, nitriding, boronizing and other thermal diffusion processes of hardening treatment of steel materials, and Z is also used for titanium. It is mainly introduced that the ion nitriding method is different from the gas nitriding method, which uses glow discharge plasma to destroy the oxide film on the titanium surface. Therefore, the nitriding pretreatment does not require mechanical grinding and pickling to remove the oxide film, and the nitriding efficiency is high. When the titanium temperature is 850 ° C, the nitriding film thickness increases from 0.7 um to 5.0 um, and the surface hardness reaches 1200-1600 Hv, with good film resistance. 3. Overlay welding method: the surface of titanium plate is hardfacing and modified by plasma transfer arc, which also has excellent wear resistance. The method is simple, and the treated material does not need to be exposed to the whole high temperature, which can prevent the decline of mechanical properties,. However, secondary processing is required. Only large and thick workpieces are processed locally. 4. Sputtering method: the method of spraying the dropped molten metal on the surface of the treated material by using the high-speed air jet of plasma flow. It does not need vacuum and can be treated in the atmosphere with high production efficiency. However, the coating tightness is not enough.

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