TC4 medical titanium alloy, in order to achieve polishing effect, how should HF and HNO3 be matched?

Generally speaking, HF is more than HNO3, and basically there will be a ratio of 3: 1. Pickling this depends on the effect. Generally, you should try to add it slowly, with more hydrofluoric acid and less nitric acid. After mixing, try it. If the scale or impurities on the surface can't be washed off, you can add more nitric acid, but too much nitric acid is easy to melt titanium alloy, so take it out quickly to avoid melting. This is all done by the master according to the actual experience and the pickling degree of the product. Try a few more times and you will master it.

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