Structure Introduction:

　　1. the furnace body is a vertical shell, the inner and outer tubes and flanges are made of high-quality 304 stainless steel material, the inner and outer tubes and the upper and lower flanges are welded into a whole, the jacket formed between the two layers can be cooled by water, and the heat transferred to the inner wall of the shell can be taken away; In the middle of the furnace body, there are extraction holes, thermocouple holes, etc.

　　2. the upper part of the furnace body is the furnace cover, which is welded by the internal and external head and flange, and the middle can be cooled by water; The opening of the furnace cover is through the mechanical manual way, the top of the furnace cover is raised and horizontally transferred to open the furnace cover, the pressing device, and is equipped with a vent valve; The thermocouple temperature measuring hole in the middle of the furnace body is equipped with a charging hole and an electrode introduction device.

　　3. the bottom of the furnace is also composed of internal and external partitions and flanges, the middle of the water cooling, fixed in the lower part of the furnace body.

　　4. the heating body is made of Oriental graphite carbon tube zone 2, the heating graphite carbon tube is processed into a three-phase heating body and electrode connection, and the three-phase power supply by the electric furnace control system is reduced by the transformer and connected to the three leading electrodes with copper bar to form a control loop; The electrode device has a water cooling cycle.

　　5. the heat insulation screen around the furnace, the top and the bottom is composed of Dongyang graphite plate and multi-layer graphite felt and 304 stainless steel bracket, which is processed into a whole heat insulation system, which can be easily installed and maintained; The table is made of Oriental graphite.

Vacuum System:

　　The vacuum system is composed of BSV40 mechanical pump, high pressure ball valve, electromagnetic differential pressure valve, vacuum pipe (including bellows), digital display vacuum gauge, etc.

Inflation And Pressure Control System:

　　Automatic pressure control, over-pressure automatic pressure relief, when the furnace pressure exceeds a certain pressure, the safety valve over-pressure automatic exhaust, lower than the required pressure value will automatically fill the air, forming a complete air pressure system, so that the furnace pressure is stable in the positive pressure state.

Electrical Control: 

　　The system is composed of power regulator and temperature programmable control and mechanical action programmable control composed of PLC and electrical components, which can achieve:

　　The process can be programmed.

　　Mechanical actions can be operated on the touch screen.

　　The analog board clearly displays the operating status of the device.

　　With water pressure, over-temperature, over-current, over-pressure and other fault alarm and interlock protection function, to achieve fault alarm record monitoring function.

　　Realize automatic operation and a set of manual operation functions.

　　Thyristor voltage regulator adopts high current, low voltage power supply and intelligent temperature control meter, which can realize continuous temperature adjustment.

　　Using Kunlun on-state LCD touch screen control, it can store 20 process curves, each curve 20 segments, and has PID parameter self-stabilization function.

　　Data is doubly protected with an external memory card, and the data stored on the card is processed, printed and converted to the format required by the user through viewing software.

　　With fault self-diagnosis function, can display the fault source in time and have sound and light alarm and self-protection function, so that the operation is simple, easy to learn, easy to use, can make the operator quickly familiar with the use and maintenance of the equipment.

　　In summary, the control system is formed by thermocouple and intelligent temperature control equipment,programmable controller (PLC), power regulator, heating transformer, vacuum gauge and recorder as the core of the electric control system, including power supply, control, recording, monitoring, alarm protection functions.

 Technical Index:

　　1. Rated Power: 50KW(2 region) 

　　2. Power Supply: 380V/3 phase 

　　3.Heater Voltage: 0-40V 

　　4. Heating Method: graphite carbon tube zone 2 

　　5. Maximum Temperature: 1400℃ 

　　6. Working Size: Φ200×100mm 

　　7. Temperature Control Mode: touch screen + temperature controller two areas independent control 

　　8. Atmosphere Protection: nitrogen, argon and other inert gases (automatic aeration and venting) 

　　9. Inflation Pressure: ≤1Mpa 

　　10. Temperature Control accuracy: ±1℃ 

　　11. Thermocouple: tungsten-rhenium thermocouple (3) 

　　12. Panel Display And Electrical Linkage: current, voltage, temperature, vacuum, water pressure, electrical linkage and sound and light alarm.

　　 Senior senior engineers, master of engineering and doctor of Shanghai Institute of Optics and Fine Mechanics of Chinese Academy of Sciences can jointly select experimental furnaces for your company and scientific research institutes, and senior designers can jointly design high-temperature furnaces.