High-Temperature Melt Pot with Stirring Function

The principle of a high-temperature melt mixer furnace

Produced by silicon-controlled rectifier inverter to generate intermediate frequency power supply

(1) Principle of High-Temperature Melting Block Furnace: By using silicon-controlled rectifiers to produce intermediate frequency power, which is then sent to the coil on the furnace body, an intermediate frequency electromagnetic field is generated in the middle of the furnace body (coil). This field induces eddy currents in the metal inside the furnace, which in turn produce a large amount of heat to melt the metal. The high-temperature melting block furnace is also an electromagnetic furnace, with the working process as follows:Using an inverter power supply, the three-phase AC power is rectified (using thyristors) into single-phase DC power, which is then converted into a 500-1000Hz intermediate frequency pulse AC by an inverter bridge. This AC current passes through the copper coil within the furnace shell, creating a magnetic field. The magnetic field induces eddy currents in the steel within the coil, which flow through the heated steel, generating heat to melt the steel.

(2) If the capacitor of a high-temperature melt furnace burns out, the main reasons are as follows: 1. The cathode of the electric heating capacitor is grounded. If there is poor insulation during the operation of the electric furnace, the capacitor's cathode grounding can lead to the capacitor housing being punctured. In such cases, the insulation of the capacitor cabinet needs to be reprocessed; 2. Lack of water, over time, scale may accumulate in the cooling pipes of the capacitor or debris may block the water supply system, causing the electric heating capacitor to overheat and burn out. Therefore, during operation, it's important to monitor the flow of the cooling water of the electric heating capacitor, and if an abnormal flow is detected, appropriate measures should be taken; 3. Over-voltage of intermediate frequency, if the intermediate frequency furnace is adjusted too high over a long period of use, exceeding the rated voltage of the electric heating capacitor (common ratings include 750V, 1200V, etc.), it can lead to over-voltage breakdown of the electric heating capacitor. In this case, the intermediate frequency voltage should be reduced or a capacitor with a higher voltage rating should be used.

Technical Specifications