In the production of titanium rods, due to differences in materials and processes used, surface treatment is often required for some TC4 and TC11 titanium rods. As a professional supplier of titanium alloy rods, we have compiled the following physical polishing methods suitable for surface polishing of titanium rods and titanium products through years of practical production.
1. Fine grinding
The surface of titanium and titanium containing alloy castings is ground using conventional various types of emery rubber wheels. The issue to be noted during grinding is still not to generate heat on the casting, not to cause grinding damage to the surface of the casting, and to achieve a flat and smooth surface throughout.
2. Barrel grinding method
The so-called barrel grinding method involves placing the processed castings, abrasives, water, and additives into a barrel type grinding groove. The grinding barrel generates rotation and vibration, causing friction between the mixture of abrasives and the processed castings, and grinding the surface of the castings smooth and flat. Its characteristic is that it does not generate dust pollution, has low labor intensity, and does not generate heat during the conventional grinding process. At present, Japan has commercialized barrel grinders and abrasives used for grinding titanium and titanium alloy castings, other metal castings, and plastics. After testing, it has been confirmed that the PK series abrasives have the highest grinding efficiency, but also the highest surface roughness. Although the grinding efficiency of SA and B series abrasives is not as good as PK, the surface smoothness of titanium castings after grinding is the highest. At present, the Fourth Military Medical University has successfully developed the first domestic dental barrel grinder.
3. Mechanical polishing method
The method of polishing the surface of titanium and titanium alloys using different specifications of soft cloth wheels or black bristles dipped in titanium and titanium alloy special polishing paste. When polishing titanium castings, it is necessary to completely clear the surface contamination layer of the castings and ensure that no new grinding hardening layer occurs, otherwise the ideal polishing effect will not be achieved. High speed and light pressure are still used for polishing. Someone has experimented with using green polishing paste to polish titanium and titanium containing alloy castings, achieving ideal polishing results. Polished titanium and titanium containing alloy castings cannot be immediately washed. Water washing can only be carried out after the surface oxide film is fully formed, otherwise the surface will become dark
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