Medium frequency induction furnace structure

A medium-frequency induction furnace is a type of electric furnace used for melting metals, particularly in foundries and metalworking industries. induction furnace structure is designed to generate heat through electromagnetic induction and melt metals efficiently. Below is an overview of its key components and structure.

1. Power Supply System

• Tần số trung bình Nguồn cấp: Converts standard AC power (50/60 Hz) into medium frequency AC (typically 150 Hz đến 10,000 Hz). This is achieved using a rectifier, inverter, and capacitors.
• Rectifier: Converts AC to DC.
• Inverter: Converts DC back to AC at the desired medium frequency.
• Capacitors: Store and regulate electrical energy to ensure stable operation.

2. Cuộn dây điện tử

• Copper Coil: A water-cooled copper coil surrounds the crucible. It generates an alternating magnetic field when medium frequency AC passes through it.
• Magnetic Field: The alternating magnetic field induces eddy currents in the metal charge, tạo ra nhiệt thông qua điện trở.

3. nồi nấu kim loại

• Refractory Lining: The crucible is made of refractory materials (ví dụ., ceramic or graphite) to withstand high temperatures and contain the molten metal.
• Tilt Mechanism: Some furnaces have a tilting mechanism to pour molten metal.

4. Hệ thống làm mát

• Water Cooling: The induction coil and other components are water-cooled to prevent overheating and ensure efficient operation.
• Cooling Tower or Chiller: Maintains the temperature of the cooling water.

5. Hệ thống điều khiển

• PLC (Programmable Logic Controller): Automates and monitors the furnace operation.
• Temperature Sensors: Measure and regulate the temperature of the molten metal.
• Frequency and Power Controls: Adjust the frequency and power output for optimal melting.

6. Furnace Body

• Steel Frame: Provides structural support for the furnace.
• Vật liệu cách nhiệt: Minimizes heat loss and improves energy efficiency.

7. Charging and Pouring System

• Charging Hopper: For adding raw materials (scrap metal, hợp kim, vân vân.).
• Pouring Spout: For transferring molten metal to molds or ladles.

8. Các tính năng an toàn

• Overheat Protection: Prevents damage from excessive temperatures.
• Leak Detection: Monitors for molten metal leaks.
• Emergency Shutdown: Ensures safe operation in case of malfunctions.

Nguyên tắc làm việc

1. The power supply generates medium frequency AC, which flows through the induction coil.
2. The coil creates an alternating magnetic field, inducing eddy currents in the metal charge.
3. The resistance of the metal to these currents generates heat, melting the metal.
4. The molten metal is then poured for casting or further processing.

Advantages

• High energy efficiency.
• Kiểm soát nhiệt độ chính xác.
• Sạch sẽ và thân thiện với môi trường (no combustion gases).
• Suitable for a wide range of metals and alloys.

This structure makes the medium-frequency induction furnace a versatile and efficient tool for metal melting applications.