The influencing factors of vacuum furnace temperature to transfer the three main factors

The influencing factors of vacuum furnace temperature to transfer the three main factors

According to the temperature field distribution equations, the internal heating type vacuum furnaces the whole temperature field distribution, mainly depends on several aspects of constraints. Namely material average coefficient of thermal conductivity, the average density of P and q on average than hot melt c.. Factors that influence the vacuum furnace temperature to transfer includes the following three points:
1: the strength of the furnace heating element, in the design, mainly in the form of inner heat source. Internal heat source heating, temperature, from inside to outside. The strength of size directly affect the temperature distribution in the furnace. By (5) it can be seen that when the higher the heat inside roar, a fixed point of the higher the temperature, at the same time a certain temperature difference (delta T) of (r), the greater the distribution area. So, in the actual production process, can control the surface of the furnace core through the load or furnace core power control furnace temperature distribution.
2: the response is the distance from the furnace core (delta r), when a certain core power, namely the inner heat source strength must be, the farther distance furnace core of reaction, the lower the temperature, may not be able to reach required temperature reaction. The closer distance furnace core, the higher the temperature, the reaction.
3; Burden of heat dissipation performance, the burden of the heat dissipation performance, the better, the faster the internal heat loss outward, heat loss in the reaction of material very easily, cause a fixed temperature decrease. But if the cooling performance of the reaction is not good, is needed for the convergence of heat, allows heat to pass time lengthen, conducive to the material to absorb heat and reaction, raise the temperature of a fixed point. Should be under the condition of high vacuum (pa) 4 ~ 13, reaction temperature 1200 ℃, the core temperature will soon be able to achieve the required value, so the reaction time of depending on the thickness of the material, namely the reaction furnace core periphery expect furnace insulation distance. Can through the design of furnace size control power supply time.