Oil fracturing proppant In addition to a small amount of tungsten heating

In addition to a small amount of tungsten heating material for high temperature furnace, heater tubes and composite reinforcement endures, most of them are used for the Resin coated ceramic proppant production of whiteTungsten wireFilament incandescent lamps and halogen and gas discharge lamp electrodes. Cathode gas discharge lamp for use as tungsten or tungsten rods, in order to reduce its electron work function, shall be added
0.5-3% thorium, tungsten thorium called wire. Since Thorium is a radioactive element, pollute the environment, it made a useful cerium tungsten thorium instead of cerium cerium tungsten wire or rod. But ceriumEvaporation rate, so that a tungsten filament or tungsten, cerium Ce can be used for small power pole gas discharge lamp.Once the use of tungsten at high temperature recrystallization becomes very brittle in case of a shock or vibration can easily break. In some of the requirements of high reliability electric light Ultra lightweight proppant in order to prevent breakage of the filament, often in the tungsten doped with 3 to 5% of rhenium, tungsten, rhenium wire is called, it can make the tungsten brittle transition temperature down to the extension at room temperature