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Ion nitriding and ion nitrocarburizing (soft nitriding) plasma chemical heat treatment
Main technical parameters of the installation of a pulsed ion nitriding LDMC-30A:
| Output voltage: | 0-1000V continuously adjustable voltage |
| Maximum output average current: | 30A |
| Pulse peak current: | 60A |
| Pulse frequency: | 1000 Hz |
| Furnace working volume: | φ600*800mm |
| Working temperature: | <=650ºC |
| Rated load: | 250 kg |
| Ultimate vacuum degree: | ≤6.67Pa |
| Pressure increase rate: | ≤0.13 Pa/min |
| Vacuum time up to 20Pa: | ≤30min |
| Arc quenching time: | ≤15 µs |
| Temperature control accuracy: | ± 1ºC |
| Pressure control accuracy: | ±1Pa |
| Technological process: | Automatic control |
| Name | Specification introduce | Quantity |
| vacuum chamber | Effective size:φ600*800mmH | 1 |
| Vacuum pump | 2X-15 | 1 |
| Electric vacuum butterfly valve | Ningbo Instrument & Valve Factory GID-50 | 1 |
| Vacuum Electromagneticvalve | Ningbo Instrument & Valve Factory DDC-JQ50 |
1 |
| Mass flow controller | Beijing Qixinghuachuang Company D07 | 2 |
| Thin Film Absolute Vacuum Gauge | Chengdu Zhenghua ZJ-1C | 1 |
| pressure regulator | Japanese companySHIMADEN SR3 | 1 |
| Temperature regulator | Japanese company SRS13 | 1 |
| Rectifier transformer | Wuhan Power Supply Factory "Nauka". (38KVA, oil) | 1 |
| PLC (programmable logic controller) | Japanese companyMitsubishi SeriesFX | 1 |
| industrial computer | Color touch screen 15" | 1 |
| Control cabinet | Power supply 45KW | 1 |
| Option 1 : Liquid ammonia |
8 hours per shift | Consumption by price in China | Total |
| Electricity | ≥200kwh/8h | 0.65RMB/kwh | 130RMB |
| Liquid ammonia | ≥1.5Kg/8h | 11RMB/kg | 16.5RMB |
| Notes: Electricity and gas consumption per shift for workpiece processing is approx. 146.5 RMB (time for one shift is 8 hours). |
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| Option 2:: nitrogen + hydrogen |
8 hours per shift | Consumption by price in China | Total |
| Electricity |
≥200kwh/8h | 0.65RMB/kwh | 130RMB |
| Nitrogen + hydrogen N:H N:H(1:3-1:9) |
~1/10 bottle N/8h | 1.25RMB/1h | 10RMB |
| ~1/4 bottle H/8h | 20.75RMB/h | 166RMB | |
| Notes: Electricity and gas consumption per shift for work-piece processing is approx. 306.0RMB (time for one shift is 8 hours). |
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| Model | LD(MC)-30 | |||||
| Working chamber | Ø600*800 | |||||
| Max Working temperature | 650ºC | |||||
| Common working temp | 500±50ºC | |||||
| Ultimate vacuum | ≤6.7Pa | |||||
| Pressure rising rate | ≤0.13Pa/min | |||||
| Model | LDMC-30 | ||||
| Maximum average output current | 30A | ||||
| Maximum peak output current | 60A | ||||
| Max nitride area | 60000cm2 | ||||
| Max loading weight | 250kgs | ||||
| Output supply | 0-1000V continue adjust | ||||
| Output status | Rectangular web | ||||
| Frequency | 1000HZ | ||||
| The arc velocity | ≤20 Microsecond | ||||
| Control method | Fixed frequency width | ||||
| Occupy space rate | 0-85% continue adjustable | ||||
Samy Instrument Can Produce All kind of Ion nitriding furnace with normal Model as :
LDMC-30A LDMC-50A LDMC-75A LDMC-100A LDMC-150A LDMC-200A
We also can according to customers requirements to customized chamber size.
Like 2000*2000mm 2000*4000mm 2200*2800mm etc.
The following different type and shape furnace chamber for your referrence:
And the following pictures are diferent raw material after test sample result:
1. what is the different about Nitriding furnace and Vaccum furnace?
Ion nitriding, also known as glow nitriding, is carried out using the principle of glow discharge. Ion nitriding is to use the metal workpiece as the cathode furnace body as the anode in a low-vacuum furnace filled with nitrogen gas. After being energized, the nitrogen and hydrogen atoms in the medium are ionized under the high-voltage DC electric field, forming a plasma region between the cathodes. to adsorption and diffusion, nitrogen penetrates into the surface of the workpiece.
Under the action of a strong electric field in the plasma area, the positive ions of nitrogen and hydrogen bombard the surface of the workpiece at a high speed. The high kinetic energy of ions is converted into thermal energy, heating the surface of the workpiece to the required temperature. Due to the bombardment of ions, atomic sputtering is generated on the surface of the workpiece, which is purified. At the same time, due to adsorption and diffusion, nitrogen penetrates into the surface of the
workpiece.
The gas nitridingsystem workpiece is placed in the furnace, and the NH3 gas is directly injected into the nitride furnace at 500 to 550ºC, which is maintained for 20 to 100 hours, so that NH3 gas is decomposed into atomic (N) gas and (H) gas for nitriding. The main purpose is to produce a wear-resistant and corrosion-resistant compound layer on the surface of the steel.
2. Precautions for ion nitriding
The cleaning workpiece is nitridized with gas, but it is best to dry or cool and then put it into the furnace to save arcing time. The workpiece should be evenly loaded into the furnace. The interval between the workpiece and the cathode and anode must be more than 30mm, so as to avoid the excessive current density between the two poles and the local temperature of the workpiece being too high. Do a good job of anti-seepage. Any hole less than 2mm must be shielded, and the sample must be placed in a position that can be consistent with the temperature of the workpiece.
3.what kind of work piece can be use with Nitriding furnace ?
4Cr5MoSiV1(H13),3Cr3Mo3W2V,5Cr4W5Mo2V ,20 steel,40 steel,20Cr,20CrMnTi,40Cr/38CrMoAl,42CrMo, 50CrV,,1Cr18Ni9Ti,40 steel,alloy structural steel, bearing steel, spring steel, die steel, tool steel and other materials.
4. what's the max temperature nitriding furnace working for ?
Normal steel working temperature around 520-550 degree,if the Titanium alloy heating temperature must be around 750-800 degrees,this is customized type,you can inquire our sales technical manage.
5. what the work piece layer after nitriding heat treatment?
It according to the work piece features
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