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Polishing methods of titanium bar and titanium alloy:
(1) fine grinding
In other words, the surface of titanium and titanium alloy castings is ground by using various kinds of emery rubber wheels. When grinding, it is still necessary to pay attention to the problem of not making the casting heat, not to cause the grinding injury on the surface of the casting, and to make the whole surface smooth and smooth.
(2) barrel grinding method
The so-called barrel grinding method is to put the processed casting, abrasive, water and additives into the barrel grinding groove, and the grinding barrel will generate rotation and vibration, so that friction will be generated between the mixture of abrasive and the processed casting, and the surface of the casting will be ground smooth and even. It is characterized by no dust pollution, low labor intensity and no heat generation in the conventional grinding process. At present, Japan has a commercial barrel grinding machine and used for titanium and titanium alloy casting, other metal casting and plastic and other grinding materials for sale. The test shows that pk series abrasive has the highest grinding efficiency and the highest surface roughness. Although the grinding efficiency of SA and B series abrasives is not as good as that of PK, the surface smoothness of the polished titanium casting is the highest. At present, the fourth military medical university has successfully developed the first barrel grinder for dentistry in China.
Polishing processing
(3) mechanical polishing
Using different specifications of soft cloth wheel or black brush, dip in titanium and titanium alloy special polishing paste to titanium and titanium alloy surface polishing method. When polishing the titanium casting, it is necessary to completely understand the surface contamination layer of the casting and the absence of new grinding and hardening layer, which will not achieve the ideal polishing effect. When polishing still USES the high speed, the light pressure way. The author has also tried using green polishing paste to polish titanium and titanium alloy castings. The polished titanium and titanium alloy castings can not be washed immediately. The surface of the polished titanium and titanium alloy castings can not be washed until the surface of the oxide film is fully formed, otherwise the surface will become dark.
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Link to this article：Methods and techniques for polishing titanium rod and titanium alloy
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