Titanium alloy casting polishing method
(1) Fine grinding
That is, using conventional all types of emery wheel rubber titanium and titanium alloy casting surface grinding. Grinding should pay attention to the problem, is still not to make titanium castings heat, cannot cause grinding of the surface of titanium castings, and the entire surface to be smooth.
(2) barrel grinding method
The so-called barrel grinding method is to be processed titanium castings, grinding materials, water and additives into the barrel grinding tank, the grinding barrel rotation and vibration, so that the mixture of abrasive and the processed castings friction between the titanium alloy castings Surface grinding smooth, smooth. It is marked by no dust pollution, low labor intensity, does not occur during the conventional grinding process of heat production. At present, there is commercially available barrel mills in Japan and is used for grinding abrasives for titanium and titanium alloy castings, other metal castings and plastic. After testing confirmed that, pc series abrasive grinding efficiency is the highest, but the surface roughness is the highest. SA and B series grinding material grinding efficiency is not so good as PK, but the polished titanium casting surface smoothness is the highest. At present, the Fourth Military Medical University has successfully developed the first dental barrel grinder in China.
(3) mechanical polishing method
Use different specifications of the silky cloth wheel or black hair brush, dipped in titanium and titanium alloy polishing paste for titanium and titanium alloy casting surface polishing method. When polishing the titanium castings, it is necessary in order to fully understand the surface contamination of the titanium alloy castings and the absence of a new hardfacing layer, which will not achieve the desired polishing effect. When polishing is still using high speed, light pressure approaches. The use of green polishing paste titanium and titanium alloy castings for polishing, and achieved a more ideal polishing effect. After polishing titanium and titanium alloy castings cannot be immediately washed into the water, must be completely formed after the surface oxide film was washed, or its surface will have the phenomenon of darkening.