1. Mechanical grinding: Titanium coils and titanium tubes have the characteristics of high chemical reactivity, low thermal conductivity, high viscosity, low mechanical grinding ratio, and easy reaction of grinding tools. Ordinary abrasives are not suitable for grinding and polishing titanium. Very hard abrasives with good thermal conductivity, such as diamond, cubic boron nitride, etc., can be used. The polishing linear speed is generally 900-1800m/min, otherwise the titanium surface is prone to grinding burnout and micro-cracks.
2. Chemical polishing: Chemical polishing meets the purpose of leveling and polishing through the redox reaction of metal in chemical media. The advantage is that chemical polishing has nothing to do with metal hardness, polishing area and structural shape. All parts in contact with the polishing fluid are polished without the need for specific and complicated equipment. The operation is simple, and the more suitable it is for polishing titanium coils and titanium tube bases. However, the process parameters of chemical polishing are difficult to control. It is required to have a good polishing effect on the denture without affecting the accuracy of the denture.
