The reason for the low power of the round steel heating furnace?

1. It is necessary to check whether the incoming line voltage, DC voltage and intermediate frequency voltage of the round steel heating furnace are reasonable, and whether the ratio between them is appropriate. In principle, the ratio of DC voltage to incoming line voltage is between 1.2–1.4 ; The ratio of intermediate frequency voltage and DC voltage is between 1.3–1.5, try to take the middle value. If these ratios are unreasonable, the output power of the round steel heating furnace will be reduced.

2. To adjust the rectifier part of the round steel heating furnace, the rectifier tube is not completely turned on, and the DC voltage does not reach the rated value, which will affect the power output of the round steel heating furnace. In addition, the inappropriate adjustment of the cut-off and cut-off values ​​of the round steel heating furnace makes the power output low. If the power is too low, the cut-off and cut-off values ​​of the round steel heating furnace should be re-adjusted.

3. The induction coil of the round steel heating furnace does not match the intermediate frequency power supply, and the load is too heavy or too light, which will also seriously affect the power output of the round steel heating furnace. It is necessary to check whether the intermediate frequency power supply and the induction coil of the furnace body are matched. For replacement, only the matching intermediate frequency power supply and furnace induction coil can play their due role.​​

4. Too much or too little compensation capacitors in the round steel heating furnace is not appropriate, and it will also make the round steel heating furnace unable to obtain the power output of electrical efficiency and thermal efficiency, that is, the reasonable power output that cannot be obtained. The compensation capacitor of the round steel heating furnace should be reasonably configured according to the rated value of the intermediate frequency power supply of the round steel heating furnace. Generally, the capacitor configuration of the round steel heating furnace is 6-12 times of its heating power, so as to ensure that the round steel heating furnace has a reasonable power output.

5. The aging of the thyristor element of the round steel heating furnace, poor contact or damage or disconnection of the thyristor resistance-capacitance absorption circuit, and poor insulation between the turns of the reactor and the load inductor will also cause the round steel heating furnace to overpower. Low.

The cooling water circuit of the round steel heating furnace is blocked, the water temperature is too high, the water pressure is too low, and the withstand voltage of the load compensation capacitor is reduced, which also causes the power of the round steel heating furnace to drop.

If the anti-interference performance of the control system of the round steel heating furnace decreases, especially the thyristor trigger circuit, as the power of the round steel heating furnace increases, the interference will also increase, and the overcurrent or overvoltage protection may malfunction. It will make the normal power output of the round steel heating furnace difficult.

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