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　　 Melting furnace manufacturer How to Choose a Better High-Frequency Furnace

　　Nowadays, there are many different types of high-frequency furnaces on the market. So how do you choose the right high-frequency furnace? When selecting a suitable high-frequency furnace, you should primarily consider the following aspects.

　　Melting Furnace Manufacturer: How to Choose a Better High-Frequency Furnace

　　1. Connection distance between the sensing component and the device

　　Since the connecting cables are relatively long—requiring even water-cooled cables for connection—it’s advisable to choose a high-power high-frequency quenching machine.

　　2. Depth and area to be heated

　　For deep heating with great depth, large area, and overall heating, a high-frequency quenching machine with high power and low frequency should be selected. For shallow heating, small area, and localized heating, a high-frequency quenching machine with relatively lower power and higher frequency is more suitable.

　　3. Heating rate

　　If the heating speed is fast, you should choose a high-frequency quenching machine with relatively higher power and frequency. Foundry furnace manufacturer.

　　4. Continuous operating time of the equipment

　　For prolonged continuous operation, choose a relatively high-power, high-frequency quenching machine.

　　5. Shape and dimensions of the heated workpiece

　　For large workpieces, bars, and solid materials, machines with relatively high power and low frequency should be selected; these are suitable for small workpieces, pipes, plates, gears, and the like. For smaller workpieces, pipes, plates, gears, and the like, machines with relatively low power and high frequency—high-frequency quenching machines—should be chosen. (CNC quenching machine equipment) Melting furnace manufacturer.

　　6. Process Requirements

　　Generally speaking, processes such as quenching and welding can be performed using lower power and higher frequencies. For processes like annealing and tempering, the required power is relatively higher, while the frequency should be lower—examples include hot forging, hot stamping, and smelting. For processes that demand excellent heat penetration, the power setting should be higher and the frequency lower.

　　7. Material of the workpiece

　　Among these materials, those with higher melting points require higher power, while those with lower melting points require lower power. Materials with low resistivity are typically welded using high-power equipment, whereas materials with high resistivity are best welded using low-power, high-frequency welders.

　　 Melting furnace manufacturer Precautions for Using Intermediate-Frequency Induction Furnaces

　　1. The output voltage of the intermediate-frequency power supply ranges from 70 to 550V. Therefore, the output terminals of the intermediate-frequency power supply, the terminals of the compensation capacitors, and the connections of the induction coil all carry high voltage. Do not expose these components to the outside environment to prevent operators from coming into contact with them and suffering electric shock.

　　2. If the induction coil’s insulation is found to be damaged, it should be immediately re-insulated or replaced with a new induction coil to prevent electric shock; foundry furnace manufacturer.

　　3. Any connection and installation must be performed with the device’s power supply turned off to prevent electric shock.

　　4. Equipment maintenance must be performed by personnel who have undergone professional training to prevent electric shock.

　　5. For safe operation, operators should wear insulated gloves, insulated shoes, and insulated clothing.

　　6. For operational safety, the intermediate-frequency workbench should be made of insulating materials such as insulating boards. Melting furnace manufacturer.

　　7. During the smelting process, it is strictly forbidden to cut off the power supply or water source. While smelting, pay close attention to the water pressure at all times and maintain it between 0.1 and 0.3 MPa. Ensure that clean water is continuously flowing for cooling, and the cooling water temperature must not exceed 45°C; otherwise, the machine may easily be damaged.

　　8. During charging operations, the charge materials should be dried beforehand and must not be directly added into the molten liquid. Before pouring in the molten iron, the furnace must be heated to around 1000 degrees Celsius. Iron blocks can be heated by induction inside the furnace.

　　9. The furnace charge should not be frozen and stored for too long to avoid the risk of furnace explosion. After the furnace lining has been sintered, it is advisable to operate continuously at 30-50% of the rated power for more than five furnaces.