Sintering furnace crucible is a thermal equipment. It mainly uses the resistance wire heating, refractory insulation, thermal insulation. The way it works for intermittent operation, requiring fast heating, long holding time, usually a work cycle for 24h, normal atmospheric pressure mode. Since the development of the solar cell industry, wafer demand explosive growth crucible sintering furnace capacity also put forward higher requirements, the equipment is to meet the capacity requirements and the development of, one can sinter 6 crucible, it is more than previous devices more energy efficient and more practical. Luoyang crucible from the furnace body equipment, furnace wire, the front door, load the crucible car, air systems, ventilation systems, electronic control systems, such as several major components. Including the furnace wall furnace, roof, bottom, door, furnace shell, and other ancillary equipment and oven racks.
Furnace structure designed to meet the following requirements for the principle:
(1) furnace temperature stable and uniform. Lining hot group should be close to or the same in all directions. At the door, lid seals tight requirements, insulation, door should be arranged on a large body electric. For long partition to install an electric furnace using body temperature zoning.
(2) reduce the heat storage and heat lining, try to use lightweight refractory insulation material, the use of part or all of the fiber lining, reducing wall thickness, make regenerative significantly reduced. Due to improved insulation, furnace hot zone will be expanded to increase the efficient use of heat, intermittent resistance furnace, furnace wall thinning should be appropriate to the light direction.
(3) of the furnace masonry have sufficient mechanical strength.
Small (4) heat loss. To minimize the size of the furnace, so that the furnace occupies a small space, in order to reduce heat dissipation holes and hot shorts. For thermal insulation strengthen small place, avoid heavy firebrick oven directly to the metal shell puzzle.
(5) work reliably. Choosing and installing electric body. Reasonable selection and choose the allowable stress. Transmission machinery, the gap between the moving parts to consider thermal expansion, heat-piece construction to be reasonable, lining to leave expansion joints.
(6) the safe operation and maintenance for easy transport. Observation hole, explosion-proof equipment design is reasonable, proper installation location. Ease of maintenance and replacement of wearing parts. Large furnace design assembled for easy loading and unloading.