CN214991789U - Ferrovanadium continuous nitriding device - Google Patents
Ferrovanadium continuous nitriding device Download PDFInfo
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- CN214991789U CN214991789U CN202121034472.0U CN202121034472U CN214991789U CN 214991789 U CN214991789 U CN 214991789U CN 202121034472 U CN202121034472 U CN 202121034472U CN 214991789 U CN214991789 U CN 214991789U
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Abstract
The utility model discloses a vanadium iron continuous nitriding device, which comprises a gas tank, a feeding table, a supporting table between materials and a discharging table which are horizontally arranged in sequence; a first air cylinder is horizontally arranged on the feeding table, one end of the first air cylinder is connected with the air tank through a connecting channel, a vertically arranged push plate is installed at the tail end of a push rod at the other end of the first air cylinder, a plurality of feeding plates are sequentially arranged in parallel at one end of the push plate, which is far away from the first air cylinder, and the feeding plates are used for placing material blocks; the material room supporting table is fixedly provided with a material room with two open ends, and a nitriding interval is arranged in the material room. The utility model discloses above-mentioned device can automatic material conveying and can preheat, can prepare in succession, has shortened preheating time, has realized the automated control of whole nitrogenize device.
Description
Technical Field
The utility model relates to a nitridation technical field especially relates to a ferrovanadium continuous nitriding device.
Background
As the equipment manufacturing industry in China is rapidly developed, the requirements on nitriding of some parts are more accurate, and particularly the requirements on high-precision transmission parts are higher, so that the equipment is expensive, the maintenance and service are difficult, the processing cost and the maintenance cost are high, and the nitriding equipment has a large market in China.
The nitriding technology is a chemical heat treatment process for enabling nitrogen atoms to permeate into the surface layer of a workpiece in a certain medium at a certain temperature. Liquid nitriding, gas nitriding, ion nitriding are common. In the traditional gas nitriding process, a workpiece is placed in a sealed container, flowing ammonia gas is introduced and heated, after the heat preservation is carried out for a long time, the ammonia gas is thermally decomposed to generate active nitrogen atoms, the active nitrogen atoms are continuously adsorbed to the surface of the workpiece and are diffused and permeated into the surface layer of the workpiece, so that the chemical components and the structure of the surface layer are changed, and the excellent surface performance is obtained. The principle is that nitrogen permeating into steel forms iron nitride with different nitrogen contents with iron from the surface to the inside, and forms various alloy nitrides, especially aluminum nitride and chromium nitride, by combining with alloy elements in steel. These nitrides have high hardness, thermal stability and high dispersivity, so that the nitrided steel parts can obtain high surface hardness, wear resistance, fatigue strength, seizure resistance, atmospheric and superheated steam corrosion resistance and temper softening resistance, and the notch sensitivity is reduced, and the size of the parts is not influenced basically.
The ferrovanadium nitride is a novel vanadium-nitrogen alloy additive, has performance superior to that of ferrovanadium and vanadium nitride, and can be widely applied to products such as high-strength screw reinforcing steel bars, high-strength pipeline steel, high-strength section steel (H-shaped steel, I-shaped steel, channel steel and angle steel), sheet billet continuous casting and rolling high-strength steel belts, non-quenched and tempered steel, high-speed tool steel and the like. However, when the ferrovanadium nitride is prepared at present, the process steps are independently carried out, and continuous preparation cannot be realized, so that the process manufacturing period is longer, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ferrovanadium device that nitrifies in succession to solve the problem that above-mentioned prior art exists, can automatic material conveying and can preheat, can prepare in succession, shortened preheating time, realized whole nitriding device's automated control.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a vanadium iron continuous nitriding device, which comprises a gas tank, a feeding table, a supporting table between materials and a discharging table which are horizontally arranged in sequence; a first air cylinder is horizontally arranged on the feeding table, one end of the first air cylinder is connected with the air tank through a connecting channel, a switch valve is arranged on the connecting channel and can control the size of a switch and the flow, a vertically arranged push plate is arranged at the tail end of a push rod at the other end of the first air cylinder, a plurality of feeding plates are sequentially arranged in parallel at one end of the push plate, which is far away from the first air cylinder, and the feeding plates are used for placing material blocks; the material room supporting table is fixedly provided with a material room with two open ends, and a nitriding interval is arranged in the material room.
Optionally, the nitriding interval in the material room comprises a preheating area, a transition area, a high-temperature slow cooling area, a low-temperature slow cooling area and a water cooling area which are sequentially arranged; the temperature of the preheating zone is 400-900 ℃, the temperature of the transition zone is 1100-1250 ℃, the temperature of the high-temperature zone is 1550-1600 ℃ all the time, and the temperature of the high-temperature slow cooling zone is reduced from 1250 ℃ to 1100 ℃.
Optionally, a first heating assembly is wound outside the preheating zone, a heat insulation plate is wrapped outside the transition zone, a second heating assembly is wound outside the high-temperature zone, a cooling water jacket is wrapped outside the water-cooling zone, a water inlet is formed in the top of the cooling water jacket, and a water outlet is formed in the bottom of the cooling water jacket.
Optionally, a plurality of nitrogen gas inlet channels are evenly arranged on one side of the material room, and a plurality of waste gas collecting pipelines are evenly arranged on the other side of the material room.
Optionally, the discharging table is of a stepped structure, the height of one end, far away from the material space, of the discharging table is smaller than the height of one end, close to the material space, of the discharging table, and the tail end of the discharging table is lower and can be used for stacking the feeding plate.
Optionally, a gripper is arranged above the discharge table, an inductor is installed at the bottom of the discharge table, and the inductor is electrically connected with the control end of the gripper. When the workpiece is pushed onto the inductor, the mechanical claw starts to work to grab the workpiece, and the workpiece can be separated from the material containing table.
Optionally, the feeding plates are of a net structure, and 19 material blocks can be placed on one feeding plate.
Optionally, furnace doors are arranged at openings at two ends of the material room, second air cylinders which are vertically arranged are mounted on two sides of the bottom of each furnace door, each second air cylinder is connected with a gas tank through an inflation channel, a switch valve is arranged on each inflation channel and can adjust the gas flow, the top of a support push rod of each second air cylinder is connected with the bottom of each furnace door, and a pressure sensor is arranged in a rod cabin of each second air cylinder; the furnace door is characterized in that cross beams are fixedly arranged above openings at two ends of the material room, bearings are mounted on the cross beams, chains are wound in the bearings, and the tail ends of the chains are fixedly connected with the bottom of the furnace door. During operation, along with the increase of the air pressure in the second cylinder, the supporting push rod of the second cylinder is pushed out, the supporting push rod of the second cylinder supports the furnace door to be opened, when the supporting push rod of the second cylinder is pushed to the top end, the pressure sensor of the rod cabin of the second cylinder senses a certain concentration, the vent valve of the second cylinder is opened, the pressure of the second cylinder is reduced, the supporting push rod falls back, and the furnace door falls.
The utility model also provides a ferrovanadium continuous nitriding process, including following step:
firstly, pressing powder mixed with vanadium oxide, iron oxide and carbon into blocks, and placing the blocks on a feeding plate;
pushing the materials into a material room through a first air cylinder, sequentially passing the materials which enter firstly through a preheating zone, a transition zone, a high-temperature slow cooling zone, a low-temperature slow cooling zone and a water cooling zone along with the continuous pushing of the subsequent materials, simultaneously opening a vent hole to introduce nitrogen, opening an exhaust port to remove waste gas in the reaction process, and starting the reaction;
and step three, after the steps are completed, the furnace door at the tail end of the material room is opened, the first air cylinder continuously delivers the material plates and the materials to the material room, the material plates which complete the process firstly are pushed by the material plates behind to reach the position of the material discharging table, then the continuous nitridation product ferrovanadium nitride is taken out, and the feeding plate is recycled for reuse.
The utility model discloses for prior art gain following technological effect:
the utility model discloses can realize the step continuity of preparation technology, can realize the continuity of reaction, liberate the labour, improve production efficiency. The utility model discloses ferrovanadium nitrogenize device in succession's warm area design can satisfy the requirement to temperature control, has shortened the time of preheating and reacting, has practiced thrift the time cost. The utility model discloses the automatic material conveying design of ferrovanadium continuous nitriding device can accomplish the continuous interpolation of material, has realized automated control.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a ferrovanadium continuous nitriding apparatus of the present invention;
FIG. 2 is a material temperature region structure of the ferrovanadium continuous nitriding device of the present invention;
FIG. 3 is a schematic view of the material placement of the present invention;
FIG. 4 is a schematic view of the furnace door structure of the present invention;
in the figure: the continuous vanadium iron nitriding device comprises a vanadium iron continuous nitriding device 100, a gas tank 1, a first air cylinder 2, a feeding table 3, a push rod 4, a material space supporting table 5, a nitrogen gas inlet channel 6, a waste gas collecting channel 7, a water outlet 8, a cooling water jacket 9, a discharging table 10, a furnace door 11, a first heating assembly 12, a heat insulation plate 13, a second heating assembly 14, a heat insulation assembly 15, a water inlet 16, a gripper 17, a material space 18, a feeding plate 19, a supporting push rod 20, a chain 21, a furnace door 22, a cross beam 23, a bearing 24, a second air cylinder 25, an inflation channel 26, a preheating zone 27, a transition zone 28, a high-temperature zone 29, a high-temperature slow cooling zone 30, a low-temperature slow cooling zone 31, a water cooling zone 32 and a material block 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a ferrovanadium device that nitrifies in succession to solve the problem that above-mentioned prior art exists, can automatic material conveying and can preheat, can prepare in succession, shortened preheating time, realized whole nitriding device's automated control.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Pressing powder mixed with vanadium oxide, ferric oxide and carbon into blocks, introducing nitrogen, reacting at a certain temperature to generate CO2CO, VC, VN etc. intermediate product, these intermediate products continue to participate in the reaction as the reactant, produce the ferrovanadium nitride at last, and this production process is accomplished in the continuous nitriding device of the utility model.
Referring to fig. 1-4, the present invention provides a ferrovanadium continuous nitriding apparatus 100, which mainly comprises: the device comprises a gas tank 1, a first cylinder 2, a feeding table 3, a push rod 4, a material room supporting table 5, a nitrogen gas inlet channel 6, a waste gas collecting channel 7, a water outlet 8, a cooling water jacket 9, a discharging table 10, a furnace door 11, a first heating assembly 12, a heat insulation plate 13, a second heating assembly 14, a heat insulation assembly 15, a water inlet 16, a mechanical claw 17, a material room 18 and a feeding plate 19.
Specifically, first cylinder 2 passes through the interface channel with gas tank 1 and is connected, is equipped with the ooff valve on the interface channel, can control switch and flow size, and the push pedal on 4 end-installations perpendicular ground of push rod of first cylinder 2, the push pedal can promote the feeding plate 19 and slowly move. The first cylinder 2 and the feeding plate 19 are both placed on the feeding table 3, and the feeding plate 19 is placed on the feeding table 3 in parallel.
The material room 18 is divided into six temperature areas, namely a preheating area 27, a transition area 28, a high temperature area 29, a high temperature slow cooling area 30, a low temperature slow cooling area 31 and a water cooling area 32. The temperature of the preheating zone 27 is 400 ℃ to 900 ℃, the temperature of the transition zone 28 is 1100 ℃ to 1250 ℃, the temperature of the high temperature zone 29 is 1550-. The preheating zone 27 is externally wound with the first heating component 12, the transition zone 28 is externally wound with the heat insulation plate 13, the high-temperature zone 29 is externally wound with the second heating component 14, the water cooling zone 32 is externally wrapped with the cooling water jacket 9, the top of the cooling water jacket 9 is provided with the water inlet 16, the bottom of the cooling water jacket 9 is provided with the water outlet 8, one side of the material room 18 is provided with a plurality of nitrogen gas inlet channels 6, the other side of the material room 18 is provided with a plurality of waste gas collecting pipelines 7, when a workpiece is processed, a nitrogen gas bottle is connected with the nitrogen gas inlet channels 6, and meanwhile, the waste gas collecting pipelines 7 are opened to connect the waste gas bottle. The inductor is installed at the bottom of the discharging table 10, when a workpiece is pushed onto the inductor, the mechanical claw 17 starts to work to grab the workpiece, the workpiece and the feeding plate 19 can be separated, and the discharging table 10 is stepped, is low in tail end and can be used for stacking the feeding plate 19. When the workpiece is gripped by the gripper 17, only the feed plate 19 remains on the discharge table 10, and the feed plate 19 is pushed to fall to the step with the subsequent discharge.
As shown in FIG. 2, the structure of the temperature zone between materials of the ferrovanadium continuous nitriding device is shown, wherein the preheating zone 27, the transition zone 28, the high temperature zone 29, the high temperature slow cooling zone 30, the low temperature slow cooling zone 31 and the water cooling zone 32 are arranged in the temperature zone. The length ratios of the six temperature zones are respectively 4: 2: 4: 2: 4: 2.5; the four temperature intervals of the preheating zone 27 are respectively 400 ℃, 650 ℃, 650 ℃ and 900 ℃; the temperature range of the transition zone 28 is 1100 ℃ and 1250 ℃; the temperature of the high-temperature area 29 is constant at 1550 ℃; the temperature of the high temperature buffer zone 30 is 1250 deg.c and 1100 deg.c. The heating material of the preheating zone 27 is a resistance wire; the first temperature interval of the transition zone 28 and the second temperature interval of the high temperature slow cooling zone 30 are both 1100 ℃.
As shown in fig. 3, the schematic view of the placing structure of the material feeding plate 19 and the material block 33 is shown, the material feeding plate 19 is of a net structure, the net structure can ensure that the bottom of the material block 33 can be fully reacted, the placing mode of the material block 33 can complete multiple material processing in a limited space as much as possible, and meanwhile, the material is fully contacted with gas, so that the reaction is more thorough. One feed plate 19 can hold 19 pieces of material 33, the first layer holds 12 pieces, and is divided into three stacks of 4 pieces, each stack being spaced apart by about one quarter of the length of the feed plate 19, and the second layer holds 7 pieces of material 33 side by side.
As shown in fig. 4, which is a schematic structural diagram of the oven door 22, two sides of the bottom of the oven door 22 are provided with second cylinders 25, the second cylinders 25 are connected with the gas tank 1 through an inflation channel 26, the inflation channel 26 is provided with a switch valve capable of adjusting gas flow, when the second cylinders 25 are connected with the gas tank 1, the support push rods 20 are pushed out along with the increase of the gas pressure in the second cylinders 25, the support oven door 22 is opened, when the support push rods 22 are pushed to the top end, the pressure sensor of the rod compartment of the second cylinders 25 senses a certain concentration, the inflation channel 26 starts to discharge gas, the pressure of the second cylinders 25 is reduced, the support push rods 20 fall back, and the oven door 22 falls.
The utility model discloses ferrovanadium nitrogenize device's roughly working process as follows: mixing with vanadium oxide (V)2O5And V2O3) Iron oxide, carbon powder, pressed into briquettes, placed on the feed plate 19. The first cylinder 2 pushes the material into the material room 18 through the push rod 4, and the material which enters firstly sequentially passes through the preheating zone 27, the transition zone 28, the high-temperature zone 29, the high-temperature slow cooling zone 30, the low-temperature slow cooling zone 31 and the water cooling zone 32 along with the continuous pushing of the subsequent material. The temperature is increased from 400 ℃ to 1550 ℃, and then the heat preservation and cooling treatment is carried out from 1550 ℃. At the same time, the nitrogen inlet channel 6 is opened to introduce nitrogen, the waste gas collecting pipeline 7 is opened to remove waste gas in the reaction process, and the reaction is started. The material firstly enters a preheating temperature zone, the temperature is increased from 400 ℃ to 900 ℃, and in the process, the material is dried; with the rise of temperature, vanadium oxide reacts with carbon powder to generate gold vanadium, iron oxide reacts with carbon powder to generate metallic iron, intermediate products such as carbon monoxide, vanadium nitride, vanadium carbide and the like can be generated in the process, and the generated vanadium nitride is fused with iron at high temperature to generate vanadium iron nitride. After high-temperature fusion, the materials are buffered through a high-temperature slow cooling area and a low-temperature slow cooling area, so that the reaction is more thorough. And finally, passing through a water cooling area for final cooling treatment. After the above steps are completed, the discharge door at the end of the material room 18 is opened, because the push rod 4 continuously delivers the feeding plate 19 and the materials to the material room 18, the feeding plate 19 which completes the process first is pushed by the feeding plate 19 behind to reach the position of the discharge table 10, and then the continuous nitriding product ferrovanadium nitride is taken out, and the feeding plate 19 is recovered and reused.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. The utility model provides a ferrovanadium continuous nitriding device which characterized in that: comprises a gas tank, a feeding table, a material chamber supporting table and a discharging table which are sequentially and horizontally arranged; a first air cylinder is horizontally arranged on the feeding table, one end of the first air cylinder is connected with the air tank through a connecting channel, a vertically arranged push plate is installed at the tail end of a push rod at the other end of the first air cylinder, a plurality of feeding plates are sequentially arranged in parallel at one end of the push plate, which is far away from the first air cylinder, and the feeding plates are used for placing material blocks; the material room supporting table is fixedly provided with a material room with two open ends, and a nitriding interval is arranged in the material room.
2. The apparatus for continuously nitriding vanadium iron according to claim 1, wherein: the nitriding interval in the material room comprises a preheating area, a transition area, a high-temperature slow cooling area, a low-temperature slow cooling area and a water cooling area which are arranged in sequence; the temperature of the preheating zone is 400-900 ℃, the temperature of the transition zone is 1100-1250 ℃, the temperature of the high-temperature zone is 1550-1600 ℃ all the time, and the temperature of the high-temperature slow cooling zone is reduced from 1250 ℃ to 1100 ℃.
3. The apparatus for continuously nitriding vanadium iron according to claim 2, wherein: the heating device is characterized in that a first heating assembly is wound outside the preheating zone, a heat insulation plate is wrapped outside the transition zone, a second heating assembly is wound outside the high-temperature zone, a cooling water jacket is wrapped outside the water cooling zone, a water inlet is formed in the top of the cooling water jacket, and a water outlet is formed in the bottom of the cooling water jacket.
4. The apparatus for continuously nitriding vanadium iron according to claim 1, wherein: a plurality of nitrogen gas inlet channels are uniformly formed in one side of the material room, and a plurality of waste gas collecting pipelines are uniformly formed in the other side of the material room.
5. The apparatus for continuously nitriding vanadium iron according to claim 1, wherein: the discharging platform is of a stepped structure, and the height of one end, far away from the material room, of the discharging platform is smaller than the height of one end, close to the material room, of the discharging platform.
6. The apparatus for continuously nitriding vanadium iron according to claim 1, wherein: the discharging table is characterized in that a mechanical claw is arranged above the discharging table, an inductor is arranged at the bottom of the discharging table, and the inductor is electrically connected with the control end of the mechanical claw.
7. The apparatus for continuously nitriding vanadium iron according to claim 1, wherein: the feeding plates are of a net structure, and 19 material blocks can be placed on one feeding plate.
8. The apparatus for continuously nitriding vanadium iron according to claim 1, wherein: the furnace door is arranged at the opening at two ends of the material room, the second air cylinders which are vertically arranged are arranged at two sides of the bottom of the furnace door, the second air cylinders are connected with the gas tank through an inflation channel, a switch valve is arranged on the inflation channel and can adjust the gas flow, the top of a supporting push rod of each second air cylinder is connected with the bottom of the furnace door, and a pressure sensor is arranged in a rod cabin of each second air cylinder; the furnace door is characterized in that cross beams are fixedly arranged above openings at two ends of the material room, bearings are mounted on the cross beams, chains are wound in the bearings, and the tail ends of the chains are fixedly connected with the bottom of the furnace door.
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| CN202121034472.0U CN214991789U (en) | 2021-05-14 | 2021-05-14 | Ferrovanadium continuous nitriding device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113122796A (en) * | 2021-05-14 | 2021-07-16 | 钢铁研究总院 | Ferrovanadium continuous nitriding device and process thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122796A (en) * | 2021-05-14 | 2021-07-16 | 钢铁研究总院 | Ferrovanadium continuous nitriding device and process thereof |
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