K nákupu a vacuum atmosphere furnace, you must first determine its power

Automatické riadenie teploty pece vo vákuovej atmosfére, bežne používané regulačné zákony zahŕňajú dvojpolohový, trojpolohový, deliaci integrál a deliaci integrálny diferenciál. Riadenie teploty odporovej pece je taký proces kondicionovania reakcie. Porovnajte skutočnú teplotu pece a teplotu atmosféry pece, aby ste získali chybu. Po spracovaní chyby sa získa riadiaci signál na nastavenie tepelného výkonu odporovej pece a potom sa dokončí kontrola teploty pece.

1. The control effect (PID control) is generated according to the error share, integration and differentiation. It is the most widely used control form in process control.

2, two-position conditioning-it has only two states: on and off. When the furnace temperature of the vacuum atmosphere furnace is lower than the set value, the actuator is fully open; when the furnace temperature is higher than the set value, the actuator is fully closed. The actuator is usually a contactor.

3. Three-position conditioning-It has two given values ​​of upper and lower limits. When the furnace temperature of the vacuum atmosphere furnace is lower than the given value of the lower limit, the contactor is fully open; when the furnace temperature is between the given value of the upper limit and the lower limit, the contactor is fully opened. Part of the actuator is open; when the furnace temperature of the atmosphere furnace exceeds the upper limit set value, the actuator is fully closed. For example, when the tubular heater is the heating element, three-position conditioning can be used to complete the difference in heating and heat preservation power.

Okrem toho pri kúpe vákuovej pece musíte najprv určiť jej výkon. Zároveň by ste mali zvážiť jeho účinnosť elektrického vykurovania a účinník. Existujú dva spôsoby, ako určiť výkon.

One is the heat balance method. According to the law of conservation of energy, the total heat consumed by the resistance vacuum atmosphere furnace is equal to the total heat emitted by the electric heating element. The total heat consumed includes the effective heat of heating the metal and the various heat losses of the atmosphere furnace. The total heat is converted to total power, and the electric heating efficiency is taken into account, and then multiplied by the power reserve coefficient. This coefficient estimates that the furnace productivity may increase and the heat loss may increase. The power reserve coefficient is for the continuous operation of the atmosphere furnace, and the intermittent operation The other kind of atmosphere furnace is the empirical method, which mainly determines the furnace power according to the furnace volume.