The Effect of Glass Lubricant on the External -surface Quality of TC4 Titanium Alloy Extruded Tube

The influence rule of the different domestic and overseas'glass lubricant on the external-surface quality of TC4 titani- um alloy extruded tube is compared and analyzed. The influence rule of glass lubricant on the external-surface quality of TCA titanium alloy extruded tube is clarified. The surface quality of the extruded tube coated with the domestic glass powder ingot is poor than the extruded tube coated with the overseas'glass powder, the reason is that the high temperature viscosity fluctuation range of domestic glass powder is bigger than the overseas', the glass powder shall be fallen off and random flowed when hot extrusion happened.