Intermediate frequency furnace tube repeatedly bad what reason be

by:Hengyang Furnace     2020-10-04
Intermediate frequency furnace tube repeatedly what reason is bad technology encyclopedia of intermediate frequency furnace capacity will be burn out what are the reasons? Intermediate frequency furnace tube and bad is the reason why a: intermediate frequency furnace capacity if appear to burn out, the main reason is the following: 1, water shortage, intermediate frequency electric furnace in the process of long-term use, may in the cooling pipe of condenser furring or feed water system into sundry jam caused by electric capacitance overheat and burn out. So in use process should pay attention to observe the electric condenser cooling water flow rate, if abnormal traffic. What reason is intermediate frequency electric furnace flow medium frequency furnace tube and bad what answer: 1, the reason: medium frequency furnace condenser soft breakdown. This phenomenon is commonly voltage suddenly flow to a certain value. Measures: with each wave table capacitor, or a capacitance of a drop, until find out bad capacitor. 2, reason: rectifier, inverter silicon soft breakdown or intermediate frequency furnace heat dissipation is not good. Measures: SCR soft breakdown when the multimeter to measure, only the boot. Please comment, one of the intermediate frequency furnace power thyristor always burn, answer: one of the intermediate frequency furnace power thyristor always burn the reasons: 1, the inverter SCR intermediate frequency furnace water-cooled water or replacement of water-cooled cooling down. To observe the water yield of water jacket and sometimes pressure is enough, but often due to water quality problems, in the water-cooled walls attached to a layer of scale, due to the differential scale is a kind of thermal conductivity of objects, although there are. Pulse rectifier how maintenance of intermediate frequency furnace of intermediate frequency furnace and bad what to answer: whether pulse rectifier ( On the control panel of six small pulse transformer) , or the inverter pulse ( Installed in other places, according to each intermediate frequency furnace manufacturers use different pulse pulse transformer, a single transformer, there are also two transformer in a small circuit board, there are four transformer on a circuit board) 。 But the edge of each transformer has a red. Principle of rectifying a: intermediate frequency furnace at 0 o 'clock 30 ° and 30 ° after zero because of the pipe under the pressure, is triggered. Look at three-phase oscillogram. Intermediate frequency furnace over-voltage over-current rectifier tube lights start up intermediate frequency furnace and bad what answer: 1, the reason: intermediate frequency furnace condenser soft breakdown. This phenomenon is commonly voltage suddenly flow to a certain value. Measures: with each wave table capacitor, or a capacitance of a drop, until find out bad capacitor. 2, reason: rectifier, inverter silicon soft breakdown or intermediate frequency furnace heat dissipation is not good. Measures: SCR soft breakdown when the multimeter to measure, only the boot. Failure 1 failure phenomenon: intermediate frequency furnace large dc current when starting, low voltage dc voltage and frequency and over-current protection device and start the deep voice. Analysis: there is a bridge inverter bridge arm of the thyristor may cause short circuit or open circuit inverter bridge running three arm bridge. Oscilloscope were observed four bridge inverter bridge thyristor (tube voltage waveform on the arm of the if there is a bridge. Who know how to judge it pulse of intermediate frequency furnace is a: whether pulse rectifier ( On the control panel of six small pulse transformer) , or the inverter pulse ( Installed in other places, according to each intermediate frequency furnace manufacturers use different pulse pulse transformer, a single transformer, there are also two transformer in a small circuit board, there are four transformer on a circuit board) 。 But the edge of each transformer has a red. Intermediate frequency furnace reactor have abnormal sound is what reason? Intermediate frequency furnace tube bad what answer: repeatedly failure phenomenon: equipment can be started, the voltage rises is not high, but the reactor sound particularly large, dull, voltage rises very unstable, with trembling. From time to time has over current or over voltage fault, sometimes even burning inverter tube, but disconnect inverter circuit rectifier part is good. Failure analysis and treatment: this kind of fault is most reactor has a problem. The inductance ratio of the reactor. Intermediate frequency furnace in molten steel after full frequency rectifier voltage drop what reason is a lot of intermediate frequency furnace and bad is the reason why a: master plate closure protection link may play a role, if the voltage is not automatically decrease rectifier bridge dc current is too large and the damage of KP, appear this kind of circumstance, smelting time will increase, if the time is too long in the furnace should be considered. Intermediate frequency furnace tube and bad what technical information medium frequency furnace always burn kk is the reason why a: here is the answer I give another friend, hope you can help to: 1, intermediate frequency output current is too high, most kk damaged because of over current, can adjust the control board to limit the output current. 2, change after KK, water-cooled and not fully compacted between KK. Due to large KK by current, if you don't have good heat dissipation will soon because of the local high temperature. What is the principle of intermediate frequency furnace? A: the working principle of intermediate frequency power supply for: the three-phase bridge type all control the ac rectifier for dc rectifier circuit, after the flat wave reactor, became a constant dc current source, then through single phase inverter bridge, the dc current inverter with a certain frequency ( Generally between 1000 and 8000 hz) The single-phase medium frequency current. Load is composed of induction coil and compensating capacitor, connection. Intermediate frequency furnace reactor knocked to ring what reason be? Intermediate frequency furnace tube and bad is the reason why a: reactor inductance is larger than normal, a magnetic circuit saturation, no stream filtering effect, also cannot be separated from the ac and dc side current, the reactor coil number of turns more than normal.
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