Glass protecting lubricant for hot extrusion of titanium and titanium alloy and preparation method thereof

The invention belongs to the field of preparation of titanium and titanium alloy proximate matters, and discloses a glass protecting lubricant for hot extrusion of titanium and titanium alloy and a preparation method thereof. The glass protecting lubricant comprises glass microbeads, graphite, molybdenum disulfide and an adhesive, wherein the mass ratio of the glass microbeads, the graphite and the molybdenum disulfide is (30-90):(5-40):(5-30); the glass microbeads comprise the following components in parts by mass: 3-8 parts of barium oxide or barium carbonate, 30-45 parts of silicon dioxide,5-10 parts of calcium oxide or calcium carbonate, 20-30 parts of sodium oxide, 10-25 parts of borax, 3-5 parts of magnesium oxide and 1-5 parts of aluminum oxide. The lubricant is good in chemical stability, free of a chemical reaction with titanium and titanium alloy materials, good in wettability with the titanium and titanium alloy materials and good in lubricating performance, and can be widely applied to the applica