Application of seal on oil film bearingof rolling mill Oil film bearing is also called liquidfriction bearing. In the process of rolling the mill, liquid lubrication isused to form a complete pressure oil film between the cone sleeve and bushing.The…
Russian president demanded that exports of Russian gas to "unfriendly" countries be settled in rubles. The demand has raised concerns in Germany about possible supply disruptions and the impact on industry and households if utilities do not pay in ro…
Silicon dioxide is the most abundant mineral in the earth's crust. It is found on all continents in forms ranging from fine powders to huge rock crystals.…
Natural flake graphite is a natural crystalline graphite, which is shaped like a fish-phosphorus, belongs to the hexagonal crystal system, and has a layered structure.…