Purpose: IF silicon carbide sintering furnace is a batch-type induction furnace, mainly used in cemented carbide, powder metallurgy industry, the production of grit silicon carbide powder, silicon carbide seal ceramic sintering, pressureless sintered silicon carbide, titanium carbide powder, vanadium carbide powder metal powder and composite metal powders. Features: The mechanical seal ring SiC ceramics atmospheric chemical resistance, high strength, high hardness, wear resistance, low coefficient of friction, anti-oxidation, a small high-temperature creep, good thermal stability, so it is a hermetically sealed ideal material for the ring. Due to dense matrix material, free silicon and free carbon content is extremely low, increasingly widely used in high purity, ultra-clean, fine chemicals, and other fields. Ultra-precision machining of the workpiece surface to mate when combined, the friction coefficient smaller than that of alumina ceramic and tungsten carbide, which has a high PV value, particularly suitable for transporting acid, alkali and corrosive liquids conditions use. I produced the atmospheric sintering silicon carbide products, having a density [3.10g / cm3-3.20 g / cm3], [HRA94] high hardness, can be more variety, into mass production of various shapes of complex mechanical seal ring, such as flat Ring, ring-sided steps, more steps ring. 1,2300 ℃ ultra-high temperature furnace, compatible to meet the various grit silicon carbide powder, silicon carbide seal ceramic sintering, pressureless sintered silicon carbide, titanium carbide, vanadium, and other metal powders and composite metal powders. 2, the use of programmable intelligent digital temperature control system, automatic temperature measurement and control accuracy to complete the process, the system temperature curve according to a given temperature, and can store a total of 400 segments twenty different process heating curve. 3, the use of water cooling systems; digital traffic monitoring system, using high-performance IF contactor for furnace automatic conversion; comprehensive PLC water, electricity, gas, automatic control and protection systems. 4, the system has significantly improved the quality of carbonation, compared with the traditional carbonization furnaces for the reaction is complete, uniform size, high carbon compounds, free advantages of low carbon content and high yield, good working conditions, long service life . ● The main technical parameters: 1, the maximum temperature: 1800 ℃, 2300 ℃ 2, the high temperature area volume: 0.01m3,0.02m3,0.03m3,0.05m3,0.1m3,0.15m3,0.2m3,0.3m, .8m3 3, working atmosphere: hydrogen, nitrogen, inert gases and the like. 4, the temperature uniformity: ≤ ± temperature 10 ℃ measurement: infrared optical temperature measurement range 800 ~ 2400 ℃ or 0 ~ 2400 ℃; temperature measurement accuracy of 0.2 to 0.75%. 5, the temperature control: process control and manual control; control accuracy: ± 1 ℃ 6, the speed limit temperature: 50 ℃ / min (air furnace) Round Size: Unit KGPS-100 KGPS -160 KGPS -200 KGPS -250 crucible Effective volume (diameter × height) mm Φ200 × 300 Φ450 × 900 Φ500 × 10500 Φ650 × 1200 IF Power Kw 100 160 200 250 IF power frequency Hz 2500 2500 2500 2500 Maximum operating temperature ℃ 2500 2500 2500 2500 ultimate vacuum Pa 3.6 × 10-3 3.6 × 10-3 3.6 × 10-3 3.6 × 10-3 pressure rise rate Pa / h 0.5 0.5 0.5 0.5 temperature zone temperature difference ℃ ± 20 ± 20 ± 20 ± 20 square Dimensions: t unit KGPS-250 KGPS - 400 Crucible effective volume (diameter × height) mm 600 × 600 × 1600 670 × 670 × 4000 Power Kw 250 400 IF frequency power supply frequency Hz 1000 1000 maximum working temperature ℃ 2500 2500 ultimate vacuum Pa 3.6 × 10-3 3.6 × 10 -3 pressure rise rate Pa / h 0.5 0.5 temperature zone temperature difference ℃ ± 20 ± 20 SiC properties: Name atmospheric sintering silicon carbide reaction bonded silicon carbide carbon-purity silicon carbide (%) of silicon carbide -> 97> 90 containing 30% of the carbon density (g / cm) 3.06-*> 3.05> 2.65 particle size (um) 0.5-0.7 8-20 20-40 Hardness (HRA) ≥90 ≥90 ≥85 Flexural strength (MPa) 400-580 350-450200 Compressive strength (MPa) 3900> 2500 1800 Break Strength (MPa) 3.05-4.6 4.3 Elastic Modulus (GPa) 380-410 420 102.6 35-110125 thermal conductivity coefficient of thermal expansion (1 / ℃) 4.02 × 10 4.3 × 10 3 × 10 0.14 0.15 Poisson's ratio