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S-now Industrial Furnace Co., Ltd.

China Manufacturer with main products: industrial furnace, annealing furnace, nitriding furnace, tempering furnace, quenching furnace, vacuum furnace

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Liquid Nitriding Furnace


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Specifications

Description:
The nitriding process of this furnace carries on in black vacuum. Furnace pressure and atmosphere change automatically, thus atmosphere in the furnace retort can keep fresh, active and uniform. All above can lead to a good speed of nitriding. Leak tightness of such furnace is very good. The remnants of ammonia gas will be treated and discharged after having been pumped to a closed tank. There’s FeSO4 in the tank. When ammonia gas meets it, they will create a chemical reaction. Their generated compounds will not pollute the air.
Generally, advantages of such furnace can be summarized as follows :( Take example of H13 aluminum nitriding processes.)
1.     Nitridized quickly.
    Temperature holding time: 8 to 10 hours; Thickness of Nitride layer: 0.14 to 0.18mm.
2.High surface hardness
After nitridized, surface hardness of the mould can reach from HV1000 to HV1200.
3.     Big capacity and low processing cost
Applying vacuum pulsed nitriding technology, fresh atmosphere can spread evenly, so we can load in many work pieces. At the same time, this kind of furnace is of great leak tightness and heat-insulating property and thereby obviously reduces the cost of treatment. Average cost of treating the aluminum 0.4 Yuan/KG (including labour cost).
4.     Small surface friction coefficient
The surface Nitride layer of work pieces are made compact with vacuum pulsed nitriding technology, so the surface friction coefficient is small, which is propitious to increase working life of nitridized work pieces.
5.     Low brittleness
Periodic change of the furnace pressure can lead to the change of the nitrogen potential of furnace atmosphere, and can prevent from the appearance of Fe2N at the same time of speeding up penetrating rate. Also this process can help to reduce the brittleness, effectively avoiding the spalling (decortications) during the working course.
6. Stable performance
The furnace atmosphere and temperature are uniform and controllable, assuring the process stability and improving the quality of working nitriding.
7.     Easy for operation
When the furnace is working, the inner pressure presents periodical change, so does the nitrogen potential, which allows one segment of nitride to replace two or even three segments, simplifying the process and the operation is simpler as one furnace can replace 4-5 sets.
8.Wide adaptability and uniform diffusion layer
If the space of working face is very narrow, it maybe disadvantageous for traditional positive pressure nitride furnace to refresh and diffuse new atmosphere, and the nitridation effect is not good. And just aiming at this problem, our company has developed MLV nitriding furnace which can make the furnace gas spread all around the tank by vacuum pressure changing technology, so even the deepest working face can get needed layer.
 
Technical Parameter
Model
Rated Power KW
Rated Temperature ℃
Rated Voltage
V
Control Zone
Effective Working Size Diameter×Height(mm)
RJ-25-6
  25
650
220
3
Ø 400×1200
RJ-35-6
  35
650
220
3
Ø 450×1200
RJ-45-6
  45
650
380
3
Ø 600×1200
RJ-50-6
  50
650
380
 3
Ø 600×1500

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