LDMC-150 Series Pulse Power Supply Glow Ion Nitriding Furnace
Samy
LDMC-150
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LDMC-150 series pulse ion nitriding equipment
Main technical indicators:
Output voltage | 0-900V continuously adjustable |
Maximum output average current | 150A |
Pulse peak current | 300A |
Pulse frequency | 1000Hz |
Furnace working volume | φ1400×1600mm |
Working temperature | ≦650℃ |
Rated load | 2500KG |
Ultimate vacuum degree | ≤6.67Pa |
Pressure rise rate | ≤0.13Pa/min |
Vacuum to 20Pa time | ≤30min |
Arc extinguishing time | ≤15μs |
Temperature control accuracy | ±1°C |
Pressure control accuracy | ±1Pa |
Process | Automatic control |
Features of pulse ion nitriding equipment:
▲ Process parameters are adjustable
One of the advantages of pulsed power supply is that process parameters and physical parameters can be adjusted independently. Under the condition of DC power supply, it is necessary to meet the requirements of the current density on the surface of the part and the requirement of the insulation current of the part. The two affect each other and cannot achieve the ideal parameters. The pulse current density is determined by the peak current, so the process parameters can be adjusted in a wide range.
▲ Fast arcing speed
The output characteristics of the pulse power supply itself have the characteristics of resisting the rapid development of the arc. Due to the extremely fast response speed of the IGBT switch, once the arc discharge is detected, the power supply can be turned off and re-ignited in a short time of tens of microseconds.
▲ It is beneficial to the nitriding of deep holes and deep grooves
When performing ion nitriding, hollow cathode effects often appear in the holes and grooves of parts. The pulse power supply can quickly interrupt the accumulation of carriers to resist the hollow cathode effect and avoid local high temperature of the parts. The pulse power supply can be used at higher air pressure. Under starting glow, when nitriding small and deep holes and grooves, the glow will not be extinguished due to high air pressure, so as to ensure uniform nitriding of holes and grooves.
▲ energy saving
Due to the characteristics of thyristor devices, when designing a DC power supply, it is necessary to design a current-limiting resistor to limit the rapid increase of current. Can not oscillate so that the arc discharge cannot be controlled), under the condition of 150A full load output, the power loss is extremely large, and the resistance of the pulse resistance is about 0.1Ω, which improves the comprehensive traffic and saves electricity by ≥30%.
LDMC-150 series pulse ion nitriding equipment configuration table
Name | Specification introduce | Qty |
Vacuum furnace body | Chamber size：φ1400×1600mmH | 1 |
Vacuum pump | 2X-15 2X-30 | 1 |
Electric vacuum butterfly valve | China GID-50 GID-65 | 1 |
Vacuum solenoid valve | China DDC-JQ50 DDC-JQ65 | 1 |
Mass flow controller | China D07 | 2 |
Film type absolute pressure vacuum gauge | China ZJ-1C | 1 |
Pressure control | Japan SR3 | 1 |
Temperature control | Japan SRS13 | 1 |
Rectifier transformer | China (36KVA oil-immersed) | 1 |
PLC(Programmable controller) | Mitsubishi FX series from Japan | 1 |
Industrial PC | 15＂ color touch-able display | 1 |
Cooling tower (tank) | Flow ≥2M3/h | 1 |
Selection and function of ion nitriding furnace
Model | LDMC-150A | LDMC-150AZ |
Chamber size | ¢1400x1600mm | ¢1400x1600mm |
Heating power（kw） | 150 | 150 |
Limited vacuum（Pa） | ≤6.7 | ≤6.7 |
Rising rate（Pa/min） | ≤0.13Pa | ≤0.13Pa |
Max loading（kg） | 2500 | 2500 |
Treated maximum surface area | 15㎡ | 15㎡ |
Normal operating temperature(℃) | 500±50 | 500±50 |
Maximum operating temperature(℃) | ≤650 | ≤650 |
Maximum peak current(A) | 300 | 300 |
Maximum current(S) | 150 | 150 |
Maximum output voltage(V) | 0-900V Continuously adjustable | 0-900V Continuously adjustable |
Frequency(Hz) | 1000 | 1000 |
Control mode | Fixed frequency width adjustment | Fixed frequency width adjustment |
Output waveform | Rectangular square wave | Rectangular square wave |
Arc Speed | ≤15μs | ≤15μs |
Temperature control mode | PID Automatic control | PID Automatic control |
Pressure control mode | Manual control | PID Automatic control |
Pressure sensor type | Absolute pressure transmitte | Absolute pressure transmitte |
Flow control mode | Manual control | PID Automatic control |
Ammonia flow-meter type | Glass rotor flow-meter | Mass flow-meter |
Carbon flow-meter type | Glass rotor flow-meter | Mass flow-meter |
Parameter input mode | Key input | Touch screen input |
Parameter recording mode | Recorder (temperature) | Computer automatic input |
Manual operation mode | Yes | Yes |
Automatic operation mode | No | Yes |
Programmable controller(PLC) | No | Yes |
Industrial control computer | No | Yes |
Furnace cooling mode | Multi-channel water inlet manual adjustment | Multi-channel water inlet manual adjustment |
Control cabinet size | 1400*700*2000mm | |
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