Use vacuum melting furnace using the advantage in the industry

by:Hengyang Furnace     2020-04-13
The vacuum melting furnace is for heating equipment in vacuum environment. In the metal casing or quartz glass sealing furnace used in pipeline connection with high vacuum pump systems. Vacuum chamber of a stove or furnace can be up to 133 x ( 10 - 2 ~ 10 - 4) h。 Furnace heating system can be directly with resistance furnace silk ( Such as tungsten filament) Electric heating, high frequency induction heating is also available. * high temperature can reach 3000 ℃ or so. Is mainly used for ceramic sintering, vacuum smelting and electric vacuum parts in addition to gas, annealing, brazing of the metal, and ceramic Metal sealing and so on. Use vacuum melting furnace using the advantage in the industry 1) Completely eliminates the oxidation and decarburization on the surface of the workpiece during the process of heating, clean surface without metamorphic layer can be obtained. That only when grinding mill side cutter ( After such as twist drill grinding groove on the surface of the decarburization layer directly exposed to the edge) To improve the performance of cutting relationship greatly. 2) On the environment pollution-free, 'three wastes' treatment is not required. 3) Obviously improve the temperature measurement, the monitoring precision. Indicated value of thermocouple temperature and furnace temperature reached plus or minus 1. 5°c。 But in different parts of a large number of artifacts in the furnace temperature difference is bigger, if USES the rarefied gas forced circulation, can still be controlled within + / - 5 ° c temperature difference. 4) High degree of mechanical and electrical integration. Increase in the temperature measurement and control accuracy, on the basis of the workpiece moving, pressure adjustment, power adjustment, etc all can set programming in advance, according to the steps to implement the quenching and tempering. 5) Energy consumption significantly below the salt bath furnace. Modern advanced vacuum furnace heating chamber adopts fine heat insulation materials of wall and the barrier, the electric energy can be highly focused on indoor heating, energy saving effect. In the condition of subcooling, silver paste can still through the silicon nitride, so the silver paste into the n-type layer is less, the effect of ohmic contact is bad, series resistance is bigger. When burnt, the consumption of silver is more than usual, and will form the silver silicon mixed layer, it will block effect, also can form a series of resistance is too large. So can't be alone resistance infer it is burned out or burned out. When cannot judge state of sintering temperature can adjust eight area, to find the approximate adjustment node, and then slowly fine-tuning. When trimming, we can according to the state in the backcourt. If the back slightly, is due to overheating, so should be fine-tuning temperature.
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