I. Features: Furnace: for vertical furnace shell of its inner cylinder is made of stainless steel outer layer of carbon steel. Forming a jacket can pass between two cooling water heat to take on the furnace shell, furnace wall temperature does not exceed 60 ℃, the upper and lower flanges welded as a whole. Opened a hole in the middle infrared thermometer (with protective atmosphere vent), thermocouple hole, pumping and observation vent hole, thermocouple device to automatically exit temperature, infrared temperature observation hole with a glass blowing fogging device operation observation hole to use the features bezel. Lid: inside and outside the head and flange composed of a water-cooled lid hanging in the middle of the opening and closing mechanism, the board started moving the handle mechanism on the lid up can start 10-15mm, there is pressure head, pressure sensor on the lid, exhaust diaphragm and lid locking device. Bottom: also the head and the inner and outer flanges composition, intermediate water-cooled, fixed at the bottom of the furnace, the electrode is introduced, under the ram air intake diaphragm valves and other components, and displacement sensor mounted adjustable height. Vacuum system: electric vacuum system uses 2X-30 mechanical pump (with electromagnetic release valve) and K-200 oil diffusion pump, and the unit also features a cold trap. Vacuum measurement for complex vacuum gauge. Vacuum system is equipped with release valve, pneumatic valve, vacuum hose made of stainless steel metal hose connection. Second, the specification parameters: furnace effective size 300x200x200 (more specifications can be customized according to the user) normal operating temperature 1500 ℃ maximum working temperature 1600 ℃ temperature control Temperature control: 50 segments programmable automatic control of temperature control accuracy: ± 1 ℃ with super temperature and heating rate of burnout alarm function 0 ~ 20 ℃ / min heating elements MoSi2 maximum operating voltage AC 220V power 6KW temperature testing component B-type double platinum and rhodium thermocouple optional side-opening door way to provide related accessories crucible tongs, high temperature gloves, thermocouple, mat tiles, doors locked