Trapezoidal aluminum ingot heating furnace

Introduce：Trapezoidal aluminum ingot heating furnace body selection, trapezoidal aluminum ingot heating furnace electrical technology selection method, trapezoidal aluminum ingot heating furnace parameter selection,Aluminum ingot heating furnace, medium frequency aluminum ingot heating furnace, aluminum indium medium frequency induction heating furnace manufacturer

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Trapezoidal aluminum ingot heating furnace

A, trapezoidal aluminum ingot is heated online, the trapezoidal aluminum ingot heating furnace is electromechanical integration structure, and the set of trapezoidal aluminum ingot heating furnace includes one KGPS300KW/0.2KHZ intermediate frequency power supply, one set of analog induction heater, and one reactive power compensation capacitor group. Set, temperature online closed-loop control system, trapezoidal aluminum ingot heating furnace horizontal movement slide guide, a set.

The trapezoidal aluminum ingot heating furnace is used for online warming of trapezoidal aluminum ingots. The rated power of trapezoidal aluminum ingot heating furnace is 300KW , the rated frequency is 200HZ , the online temperature is 80-100 °C, and the output of 2350square millimeter aluminum ingots per hour is more than 4T . Because the trapezoidal aluminum ingot heating furnace automatically adjusts the output power, the power consumption of the trapezoidal aluminum ingot heating furnace is controlled within 60 kWh ; the trapezoidal aluminum ingot heating furnace has the outer dimensions of 2300 × 1100 × 1300mm (or according to user requirements), total The weight is about 2.5T and the water requirement is about 15 t / h .

B trapezoidal aluminum ingot heating furnace parameter selection

1. Electrical parameters
Transformer capacity	KVA	400
Transformer secondary voltage	V	380
IF power supply rated power	KW	350
Output voltage (furnace)	V	750
working frequency	Hz	200
Yield	T /h	≥ 4
power consumption	Kwh/t	≤ 60
2. Water system parameters
Water supply flow	t / h	15
Water supply pressure	Mpa	0. 1 - 0.2
Inlet temperature	°C	5 to 35 °C
Effluent temperature	°C	< 50 °C

C, the choice of electrical technology for trapezoidal aluminum ingot heating furnace

The electrical part of the trapezoidal aluminum ingot heating furnace includes an intermediate frequency power supply control cabinet, a temperature closed loop control system, an external control console, and a reactive compensation capacitor bank.

1 . IF power control cabinet:

1.1 IF power supply is thyristor frequency conversion device, input voltage 380V , 50Hz , output power

300KW , the power can be adjusted infinitely, the output frequency is 0.2KHz . The color of the cabinet is determined according to the user's requirements (the national network is not required by the user), and the external dimensions are 2300 × 1100 × 1300mm .

1.2 The intermediate frequency control system is fully digital and has no relay control. Unique sweep mode with 100% startup success

1.3 Regulator with fast response characteristics.

1.4 Perfect and reliable protection

1.5 advanced phase sequence self-identification function

1.6 The trapezoidal aluminum ingot heating furnace is directly loaded with a contoured induction coil, and the final load is an aluminum alloy ingot. The induction coil and the compensation capacitor bank adopt a parallel resonance method to achieve better electrical efficiency.

1.7 trapezoidal aluminum ingot heating furnace is equipped with line voltmeter, DC voltmeter, DC current meter, intermediate frequency voltmeter, intermediate frequency meter, intermediate frequency power meter and temperature display instrument. All trapezoidal aluminum ingot furnace parameters can be visualized.

All pipes in the 1.8 IF power cabinet are made of stainless steel.

2. Temperature closed loop control system:

2.2 The main control board of the intermediate frequency power supply is designed with a temperature closed-loop control interface. The temperature control instrument adopts the Japanese island electric SR3 intelligent temperature control instrument with PID adjustment, and the far-infrared optical fiber thermometer adopts the German Opus CT series aluminum special thermometer. Temperature range -40-900 °C. Firstly, the heating temperature is set in the temperature control instrument. After the power is turned on, the thermometer measures the heating temperature in real time and feeds back to the temperature control instrument. The temperature control instrument compares the measured temperature with the set heating temperature and outputs an analog signal to the intermediate frequency main control board. The main control board automatically adjusts the thyristor firing angle according to the level of the signal, so that the power output power is adjusted following the level of the analog signal to achieve the purpose of temperature closed loop control.When the stagnation stays in the furnace, the frequency doubling heater enters the heat preservation state, and the output power is automatically adjusted according to the set temperature, so that the temperature of the aluminum ingot is constant within a certain range, and the aluminum ingot is never burned.

F, reactive power capacitor bank:

In order to reduce the loss of the large current loop , the compensation capacitor bank is installed as close as possible to the quenching transformer, which can reduce the loss of the tank and improve the efficiency. . All capacitors adopt new high-capacity non-toxic medium water-cooled RFM series electric heating capacitors, which have the advantages of large single capacity, low dielectric loss and small floor space.

E, trapezoidal aluminum ingot heating furnace body selection

The induction furnace includes an electric furnace body, a copper busbar, a refractory cement, a water distribution system, and the like.

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