CN106871634A - A kind of pair of tank pusher-tray type powder reduction furnace and the technique that reduction treatment is carried out to material - Google Patents
A kind of pair of tank pusher-tray type powder reduction furnace and the technique that reduction treatment is carried out to material Download PDFInfo
- Publication number
- CN106871634A CN106871634A CN201710211253.7A CN201710211253A CN106871634A CN 106871634 A CN106871634 A CN 106871634A CN 201710211253 A CN201710211253 A CN 201710211253A CN 106871634 A CN106871634 A CN 106871634A
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- Prior art keywords
- muffle furnace
- discharging
- muffle
- pusher
- cooling
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/12—Arrangement of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/13—Arrangement of devices for discharging
Abstract
The technique for carrying out reduction treatment the invention discloses a kind of pair of tank pusher-tray type powder reduction furnace and to material, reduction furnace includes two pusher-tray type powder reduction furnace units being set up in parallel, each pusher-tray type powder reduction furnace unit includes support, pallet, the feed mechanism of delivery tray, Muffle furnace and cooling body, and feed mechanism, Muffle furnace and cooling body are arranged on support.It is arranged to double-decker by by support, the space of half is saved in hold facility workshop length and width direction, lowering or hoisting gear, the pushing plate mechanism of feeding device bag and device for discharging are all automatically controlled by electric control system simultaneously, high degree of automation, the manipulation strength of saving equipment.The route that tray and workpiece pass through is loop checking installation, and pallet is charged to emptying point for same place, i.e. pallet are constantly in recurrent state, it is not necessary to artificial to carry, and manpower is saved, while improve operating efficiency.
Description
Technical field
The technique for carrying out reduction treatment the present invention relates to a kind of pair of tank pusher-tray type powder reduction furnace and to material.
Background technology
Existing reduction furnace, feed arrangement, body of heater, cooling system and device for discharging are in one line, and whole device is in strip
Shape, floor space is big, while automaticity is low, feeding, discharging need manually to carry out, and is needed after discharging artificial by filling trays
It is carried at feeding, waste of resource, efficiency is low.
The content of the invention
The technique that reduction treatment is carried out it is an object of the invention to provide a kind of pair of tank pusher-tray type powder reduction furnace and to material,
Greatly, automaticity is low to solve reduction furnace floor space in the prior art, and feeding, discharging need manually to carry out, and are needed after discharging
Manually filling trays are carried at feeding, waste of resource, the low technical problem of efficiency.
In order to solve the above-mentioned technical problem the present invention, adopts the following technical scheme that：
A kind of pair of tank pusher-tray type powder reduction furnace, including two pusher-tray type powder reduction furnace lists being disposed in parallel on support
Unit, each pusher-tray type powder reduction furnace unit includes pallet, the feed mechanism of delivery tray, Muffle furnace and cooling body, feeding
Mechanism, Muffle furnace and cooling body are arranged on support；The support is divided into upper and lower two-layer, and Muffle furnace and cooling body are arranged on
Upper strata；The feed mechanism includes conveyer, feeding device and device for discharging, and conveyer is arranged on the lower floor of support；On
Material device and device for discharging are arranged on the discharge end of support, and feeding device and device for discharging include air lock, are vertically arranged in
Lowering or hoisting gear and the pusher being horizontally set on air lock in air lock；The air lock, above offers two stations mouthful,
The lower end of lowering or hoisting gear is provided with the supporting plate for placement tray, when lowering or hoisting gear is reduced to lower station, supporting plate and conveyer
Flush；When the supporting plate of the feeding device rises to station, supporting plate is flushed with the bottom of Muffle furnace；The support of the device for discharging
When plate rises to station, supporting plate is flushed with cooling body.One end of cooling body is provided with reduction on the Muffle furnace
Gas entrance.
It is arranged to double-decker by by support, the space of half is saved in length direction, saves the space of factory building,
Lowering or hoisting gear, the pusher of feeding device and device for discharging are all automatically controlled by electric-control system simultaneously, high degree of automation.Separately
Outward, material is loaded in pallet, tray and material are pushed to one end of conveyer by the pusher of device for discharging, are filled by transmission
Put in the air lock for entering feeding device after conveying, upper station is delivered to by the lowering or hoisting gear of feeding device, then by pusher
Structure enters heating in Muffle furnace, into cooling in cooling body after heating, tray and material into device for discharging supporting plate after cooling
Upper station, lower station is delivered to by the lowering or hoisting gear of device for discharging, then carry out discharging；The route that tray and material pass through is ring
Shape loop, pallet charging and discharging are constantly in recurrent state for same station, i.e. pallet, it is not necessary to artificial to carry, and save people
Power, while improve operating efficiency.Pallet enters the position stroke of Muffle furnace by the travel switch or light mounted in Muffle furnace side
Electric proximity switch control.
Further improve, cartridge, the chamber of cartridge are provided between the top of the feeding device and Muffle furnace
Body is cup, and one end of cup is connected with air lock, and the other end is connected with Muffle furnace, and cartridge sets near the one end in air lock
Fluid pressure type cup door is equipped with, air lock and cup can be completely cut off when cup door is closed, cartridge passes through flange with Muffle furnace
Connection；The cartridge is provided with gas combustion apparatus, gas combustion apparatus and cup, Muffle near the feed end of Muffle furnace
Stove is connected；The lower floor of the support is provided with fluid pressure type rear chamber door, and rear chamber door is located between conveyer and device for discharging.Right
When material is heated, isolated by closing cup door, rear chamber goalkeeper Muffle furnace, it is ensured that material is in reducibility gas atmosphere.
By setting gas combustion apparatus, unnecessary gas is burnt, therefore gas combustion apparatus port is in Chang Minghuo
State, the setting of Chang Minghuo for production safety, while be also to maintain certain atmosphere conversion in Muffle furnace, will be unnecessary in Muffle furnace
Gas is discharged.The nozzles mouth of gas combustion apparatus is provided with automatic electronic igniting device, and gas combustion apparatus middle part is provided with manually
Valve is controlling to discharge tolerance size, it is ensured that flame will not extinguish halfway, can automatic ignition when fray-out of flame.
Further improve, the conveyer includes horizontally disposed rollgang and motor, motor output shaft and conveying
Connected by roller chain between the rotating shaft of roller-way, motor drives rollgang to rotate.The pallet of material is mounted with rollgang
Rotation moved, from one end that feeding device is delivered near one end of device for discharging, operate steadily, efficiency high.
Further improve, the cooling body includes inner bag and parcel water(-cooling) jacket outside the tank, water(-cooling) jacket bag
The first water(-cooling) jacket and the second water(-cooling) jacket are included, one end of inner bag is connected with Muffle pot outlet by flange, the other end of inner bag
Top with the air lock of device for discharging is connected by flange；The inner bag is provided with explosion-protection equipment near one end of Muffle furnace.
Inner bag is welded into for stainless steel plate, and water(-cooling) jacket is manufactured for steel plate.After the close weldering of water(-cooling) jacket is strengthened, leaked hunting inspection through pressure testing, entered
The mouth of a river is in water(-cooling) jacket bottom, water (flow) direction and the conveying direction expected conversely, water(-cooling) jacket intake pressure is less than or equal to 2Kg/
Coupled by flange between Muffle pot between cm3, water(-cooling) jacket, sealing ring is made by heatproof asbestos board between flange, surrounding bolt is solid to pressure
It is fixed.
The explosion-protection equipment includes the venting being opened on inner bag, and venting is led to by flangeseal, upper and lower flange
Bolt connection is crossed, bolt is arranged with spring beyond one end of upper flange, and spring is in compressive state.When the pressure in Muffle pot is big
In setting value, upper flange reaches the purpose of pressure release by jack-up；After the pressure in Muffle pot is reduced, upper flange falls after rise, by bullet
The restoring force of spring tightens together upper and lower flange, it is ensured that sealing.
Further improve, the lowering or hoisting gear is the hydraulic cylinder being vertically arranged, pushing meanss are horizontally disposed hydraulic cylinder,
The pusher stroke of pushing meanss hydraulic cylinder can adjust, and is adjusted automatically according to the pallet limit switch in rear chamber.
Further improve, the top cover of the Muffle furnace is movable detachable setting, facilitate overhaul or dismounted when installing.Horse
Not the both sides of tank and bottom lining set fire resistant heat preserving heat insulation layer, and insulation heat insulation layer includes alumina silicate fibre layer and light thermal-insulation brick layer,
Gross thickness is 400mm.The supporting brick of Muffle pot lower section laying uses the I grades high straight brick masonry of aluminium profiles heavy standard refractory, flame retardant coating
Thickness is 115mm.
The Muffle pot top is domed, and Muffle pot bottom is arranged with twice beading in parallel along its length, improves horse
The not intensity of tank, to ensure that there is few deformation and high intensity effect under high temperature.
Heating element heater in Muffle furnace is to be made spiral helicine resistance wire using high temperature alloy filament winding, and heating element heater is arranged in
Above and below Muffle pot, resistance wire is wrapped on alundum tube, and guarantor of the crossbearer in Muffle pot both sides is distinguished at the two ends of alundum tube
On warm heat insulation layer；, using single multigroup connection in series-parallel form connection, such as wherein one resistance wire fracture can be by controlling for the resistance wire
Shown on cabinet ammeter, then stopped the heating of this area, the resistance wire of fracture is pulled down from Muffle furnace side, changed same size
Resistance wire just can, easy to operate, replacing construction is short, has little influence on Muffle furnace normal work.
Further improve, the air lock bottom of the device for discharging is provided with roller, the roller that device for discharging passes through bottom
It is arranged on support；The bottom of cooling body is provided with roller, and cooling body is arranged on support by the roller of bottom.Bottom
It is in order to Muffle pot expanded by heating extends to be provided with roller.
Further improve, multiple thermocouples are provided with the top of the Muffle furnace, the lower end of thermocouple passes through Muffle furnace
Top cover is located between two Muffle pots.Muffle furnace in the application is a body of heater and two Muffle pots, and two Muffle pots are side by side
Structure, length sets up interval separately, and temperature and technological parameter can be independently arranged per area.
The technique that using double tank pusher-tray type powder reduction furnaces powder materials are carried out with reduction treatment, is comprised the following steps：
Step one, 400 DEG C are preheated to Muffle furnace；
Step 2, by admission line to nitrogen is passed through in Muffle furnace, exclude the oxygen in Muffle furnace, and real-time detection horse
Not in stove oxygen content；
Step 3, detect after oxygen-containing Gas content in Muffle furnace reached in the range of material handling process, by air inlet pipe
Then road is alternately passed through nitrogen and hydrogen, it is ensured that Muffle furnace to hydrogen is passed through in Muffle furnace by the plenum system of nitrogen, hydrogen
In reach processing atmosphere needed for material treatment, the percent by volume of hydrogen can the technique according to needed for entering stove treatment material adjusted
Section, is then fed, and material is put into pallet, by the hydraulic cylinder that is vertically arranged in device for discharging by the near lower station of supporting plate, will
Pallet equipped with material is placed on supporting plate, then starts horizontally disposed hydraulic cylinder in device for discharging, is horizontally disposed with the work of hydraulic cylinder
Stopper rod is promoted and shifts on rollgang pallet onto, and motor drives rollgang to rotate, then pallet and material are sent to positioned at lower station
Feeding device supporting plate on, start the hydraulic cylinder that is vertically arranged in feeding device, pallet and material are promoted to station, then
Start horizontally disposed hydraulic cylinder in feeding device, the piston rod for being horizontally disposed with hydraulic cylinder is promoted pallet and material push-in cup,
Into in Muffle pot, be then shut off cup door, rear chamber door, in reducing atmosphere to material heat, heat, be incubated, heating and
Soaking time and it is adjusted according to different material.
Material after step 4, heating enters in cooling body lowers the temperature, and material and pallet after cooling are fed to positioned at upper work
On the device for discharging supporting plate of position, start the hydraulic cylinder being vertically arranged in device for discharging, material and pallet are reduced to lower station, and carry out
Discharging.
Further improve, the conveying direction of the water (flow) direction of cooling water and material is conversely, water(-cooling) jacket in the water(-cooling) jacket
Intake pressure is less than or equal to 2Kg/cm3, submit cooling effect to.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, it is arranged to double-decker by by support, the sky of half is saved in hold facility workshop length and width direction
Between, while the lowering or hoisting gear of feeding device bag and device for discharging, pusher are all automatically controlled by electric control system, automation
Degree is high, save the manipulation strength of equipment.The route that tray and workpiece pass through is upper and lower loop checking installation, and pallet is charged to emptying point
It is that same place, i.e. pallet are constantly in recurrent state, it is not necessary to artificial to carry, manpower is saved, while improve operating efficiency.
2nd, by setting gas combustion apparatus, unnecessary gas is burnt, therefore gas combustion apparatus port is in Chang Ming
Fiery state, the setting of Chang Minghuo for production safety, while be also to maintain certain atmosphere conversion in Muffle furnace, will be many in Muffle furnace
Gas is discharged.The nozzles mouth of gas combustion apparatus is provided with automatic electronic igniting device, and gas combustion apparatus middle part is provided with a section hand
Move valve to control to discharge tolerance size, it is ensured that flame will not extinguish halfway, can automatic ignition when fray-out of flame.
3rd, Muffle pot top is domed, and Muffle pot bottom is arranged with twice beading in parallel along its length, improves Muffle
The intensity of tank, to ensure that there is few deformation and high intensity effect under high temperature.
4th, the air lock bottom of device for discharging is provided with roller, and device for discharging is arranged on support by the roller of bottom；
The bottom of cooling body is provided with roller, and cooling body is arranged on support by the roller of bottom.Bottom be provided with roller be for
Muffle pot expanded by heating extends.
Brief description of the drawings
Fig. 1 is the of the present invention pair of structural representation of tank pusher-tray type powder reduction furnace.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural representation of feeding device.
Fig. 4 is the E-E sectional views of Fig. 1.
Fig. 5 is the structural representation of device for discharging.
Fig. 6 is the structural representation of cooling body.
Fig. 7 is plenum system schematic diagram.
Specific embodiment
To make the purpose of the present invention and technical scheme clearer, below in conjunction with the embodiment of the present invention to skill of the invention
Art scheme is clearly and completely described.
Embodiment one:
As Figure 1-5, a kind of pair of tank pusher-tray type powder reduction furnace, including two push-plates being disposed in parallel on support 1
Formula powder reduction furnace unit, each pusher-tray type powder reduction furnace unit includes feed mechanism, the Muffle furnace of pallet 15, delivery tray
3 and cooling body 5, feed mechanism, Muffle furnace 3 and cooling body 5 are arranged on support 1.1 point of the support is upper and lower two-layer,
Muffle furnace 3 and cooling body 5 are arranged on upper strata；The feed mechanism includes conveyer, feeding device 4 and device for discharging 6, passes
Device is sent to be arranged on the lower floor of support；Feeding device 4 and device for discharging 6 are separately positioned on the two ends of support, feeding device 4 and unload
Material device 6 includes air lock 43, is vertically arranged in air lock 43 lowering or hoisting gear 41 and is horizontally set on pushing away on air lock
Material mechanism 42；The lower end of the lowering or hoisting gear 41 is provided with the supporting plate for placement tray, and two works are offered on air lock 43
Position mouth, when lowering or hoisting gear 41 is reduced to lower station, supporting plate is flushed with conveyer；The supporting plate of the feeding device 6 rises to
During station, supporting plate is flushed with the bottom of Muffle furnace 3；When the supporting plate of the device for discharging 6 rises to station, supporting plate and cooler
The bottom of structure 5 flushes.One end on the Muffle furnace 3 near cooling body 5 is provided with gas entrance 10；
It is arranged to double-decker by by support 1, the space of half is saved in length direction, saves the sky of factory building
Between, while the lowering or hoisting gear of feeding device 4 and device for discharging 6, pusher are all automatically controlled by control device, automaticity
It is high.In addition, loading material in pallet 15, tray is placed into one end of conveyer, warp with material by the pusher of device for discharging 6
Cross in the air lock 43 for entering feeding device 4 after conveyer is conveyed, upper station delivered to by the lowering or hoisting gear 41 of feeding device,
Entered in Muffle furnace 3 by pusher again and heated, entered in cooling body 5 after heating and cool down, tray after cooling and expect into
Enter the upper station of device for discharging supporting plate, lower station is delivered to by the lowering or hoisting gear of device for discharging 6, then carry out discharging；Tray and
Expect that the route for passing through is loop checking installation, pallet charging is with discharging for same station, i.e. pallet are constantly in recurrent state, it is not necessary to
Think to carry, manpower is saved, while improve operating efficiency.Pallet 15 enters the position stroke of Muffle furnace 3 by mounted in Muffle furnace
Travel switch or the photoelectric proximity switch control of side.
In the present embodiment, cartridge is provided between the top of the feeding device 4 and Muffle furnace, cartridge
Cavity is cup 8, and one end of cup 8 is connected with air lock 43, and the other end is connected with Muffle furnace 3, and cartridge is near air lock
One end be provided with fluid pressure type cup door 7, cup door 7 can completely cut off air lock 43 with cup 8 when closing, cartridge and horse
Not stove is connected by flange；The cartridge is provided with gas combustion apparatus 9, gas combustion apparatus near one end of Muffle furnace
Connected with cup, Muffle furnace；The lower floor of the support 1 be provided with fluid pressure type rear chamber door 11, rear chamber door 11 be located at conveyer with
Between device for discharging 6.When being heated to material, Muffle furnace is isolated by closing cup door 7, rear chamber door 11, it is ensured that at material
In reducibility gas atmosphere.
By setting gas combustion apparatus 9, gas unnecessary in Muffle furnace is burnt, therefore the port of gas combustion apparatus 9
In Chang Minghuo states, the setting of Chang Minghuo, while being also to maintain certain atmosphere conversion in Muffle furnace 3, is incited somebody to action for production safety
Excessive gas discharge in Muffle furnace.The nozzles mouthful of gas combustion apparatus 9 are provided with automatic electronic igniting device, gas combustion apparatus 9
Middle part is provided with hand-operated valve to control to discharge tolerance size, it is ensured that flame will not extinguish halfway, can be from moving point when fray-out of flame
Fire.
In the present embodiment, the conveyer includes horizontally disposed rollgang 2 and motor 13, the output shaft of motor 13
It is connected by roller chain and the rotating shaft of rollgang between, motor 13 drives rollgang to rotate.Be mounted with the pallet of material with
The rotation of rollgang 2 is moved, and from one end that feeding device 4 is delivered near one end of device for discharging 6, is operated steadily, and is imitated
Rate is high.
In the present embodiment, the cooling body 5 includes inner bag 51 and parcel water(-cooling) jacket 52 outside the tank, water-cooled
But set 52 includes the first water(-cooling) jacket and the second water(-cooling) jacket, and one end of inner bag 51 is exported with Muffle pot 31 and is connected by flange,
The other end of inner bag 51 is connected with the top in the air lock of device for discharging 6 by flange；The inner bag 51 is close to the one of Muffle furnace 3
End is provided with explosion-protection equipment 53.Inner bag 51 is welded into for stainless steel plate, and water(-cooling) jacket 52 is manufactured for steel plate.The close weldering of water(-cooling) jacket 52
After reinforcement, leaked hunting inspection through pressure testing, in water(-cooling) jacket bottom, the conveying direction of water (flow) direction and material is conversely, water cooling for water inlet
Cover 52 intake pressures to be less than or equal to be coupled by flange between 1Kg/cm3, water(-cooling) jacket 52 or between Muffle pot, by resistance to fire stons between flange
Cotton plate makees sealing ring, and surrounding bolt is fixed to pressure.
The explosion-protection equipment 53 includes the venting being opened on inner bag, and venting is by flangeseal, upper and lower flange
It is bolted, bolt is arranged with spring beyond one end of upper flange, spring is in compressive state.When the pressure in Muffle pot
More than setting value, upper flange reaches the purpose of pressure release by jack-up；After the pressure in Muffle pot is reduced, upper flange falls after rise, passes through
The restoring force of spring tightens together upper and lower flange, it is ensured that sealing.
In the present embodiment, the lowering or hoisting gear is the hydraulic cylinder being vertically arranged, and pushing meanss are horizontally disposed hydraulic pressure
Cylinder, the pusher stroke of hydraulic cylinder can adjust, and is adjusted automatically according to the pallet limit switch in rear chamber.
In the present embodiment, the top cover of the Muffle furnace is movable detachable setting, facilitates overhaul or is dismounted when installing.
The both sides of Muffle pot and bottom lining set fire resistant heat preserving heat insulation layer, and insulation heat insulation layer includes alumina silicate fibre layer and light-weight insulating brick
Layer, gross thickness is 400mm.The supporting brick of Muffle pot lower section laying uses the I grades high straight brick masonry of aluminium profiles heavy standard refractory, fire resisting
Thickness degree is 115mm.
The top of the Muffle pot 31 is domed, and the bottom of Muffle pot 31 is arranged with twice beading in parallel along its length, carries
The intensity of Muffle pot high, to ensure that there is few deformation and high intensity effect under high temperature.
Heating element heater 33 in Muffle furnace 3 is to be made spiral helicine resistance wire, heating element heater cloth using high temperature alloy filament winding
Put above and below Muffle pot, resistance wire is wrapped on alundum tube, crossbearer is distinguished in Muffle pot both sides in the two ends of alundum tube
Insulation heat insulation layer on；Using single multigroup connection in series-parallel form connection, such as wherein one resistance wire fracture can be by for the resistance wire
Shown on switch board ammeter, then stopped the heating of this area, the resistance wire of fracture is pulled down from Muffle furnace side, changed identical
Specific resistance silk just can, easy to operate, replacing construction is short, has little influence on Muffle furnace normal work.
In the present embodiment, the air lock bottom of the device for discharging 6 is provided with roller, and device for discharging 6 is by bottom
Roller is arranged on support 1；The bottom of cooling body 5 is provided with roller, and cooling body 5 is arranged on support by the roller of bottom
On 1.It is in order to Muffle pot expanded by heating extends that bottom is provided with roller.
In the present embodiment, the top of the Muffle furnace 3 is provided with multiple thermocouples 12, and the lower end of thermocouple 12 passes through horse
Not the top cover of stove is located between two Muffle pots.Muffle furnace 3 in the application is a body of heater and two Muffle pots 31, two horses
Not tank side by side configuration, length sets up interval separately, and temperature and technological parameter can be independently arranged per area.
Embodiment two：
The technique that using double tank pusher-tray type powder reduction furnaces powder materials are carried out with reduction treatment, is comprised the following steps：
Step one, 400 DEG C are preheated to Muffle furnace；
Step 2, by passage to nitrogen is passed through in Muffle furnace, exclude the oxygen in Muffle furnace, and real-time detection Muffle
The content of the oxygen in stove；
Step 3, detect after oxygen-containing Gas content in Muffle furnace reached in the range of material handling process, by air inlet pipe
Then road is alternately passed through nitrogen and hydrogen, it is ensured that Muffle furnace to hydrogen is passed through in Muffle furnace by the plenum system of nitrogen, hydrogen
In reach processing atmosphere needed for material treatment, the percent by volume of hydrogen can the technique according to needed for entering stove treatment material adjusted
Section, then feed, material is put into pallet, by the hydraulic cylinder that is vertically arranged in device for discharging by the near lower station of supporting plate, will
Pallet equipped with material is placed on supporting plate, then starts horizontally disposed hydraulic cylinder in device for discharging, is horizontally disposed with the work of hydraulic cylinder
Stopper rod is promoted and shifts on rollgang pallet onto, and motor drives rollgang to rotate, then pallet and material are sent to positioned at lower station
Feeding device supporting plate on, start the hydraulic cylinder that is vertically arranged in feeding device, pallet and material are promoted to station, then
Start horizontally disposed hydraulic cylinder in feeding device, the piston rod for being horizontally disposed with hydraulic cylinder is promoted pallet and material push-in cup,
Into in Muffle pot, be then shut off cup door, rear chamber door, in reducing atmosphere to material heat, heat, be incubated, heating and
Soaking time and it is adjusted according to different material.
The nitrogen, the plenum system of hydrogen are as shown in fig. 7, nitrogen, hydrogen plenum system are supplied gas point including three respectively
Branch, pressure gauge 16 is respectively arranged with nitrogen, the total pipeline of hydrogen plenum system, and flowmeter is provided with each branch of supplying gas
17th, control valve 18, three branch's correspondences of supplying gas of nitrogen plenum system connect charging aperture before Muffle furnace discharge outlet, Muffle furnace
At place, cup door, three branch's correspondences of supplying gas of hydrogen plenum system connect Muffle furnace rear gas inlet port 10, the first water-cooled
But hydrogen inlet port, the second water(-cooling) jacket hydrogen inlet port are covered, wherein in the branch of connection Muffle furnace rear gas inlet port 10
It is provided with backfire controller 19.
Material after step 4, heating enters in cooling body lowers the temperature, and material and pallet after cooling are fed to positioned at upper work
On the device for discharging supporting plate of position, start the hydraulic cylinder being vertically arranged in device for discharging, material and pallet are carried out by near lower station
Discharging.
In the present embodiment, in the water(-cooling) jacket water (flow) direction of cooling water with material conveying direction conversely, water cooling
Set intake pressure is less than or equal to 2Kg/cm3, improve cooling effect.
Do not done in the present invention illustrate be prior art or be capable of achieving by prior art, and the present invention
Described in specific implementation case be only preferable case study on implementation of the invention, not for limiting practical range of the invention.
The equivalence changes that i.e. all contents according to scope of the present invention patent are made and modification, all should be used as technology category of the invention.
Claims (10)
1. a kind of pair of tank pusher-tray type powder reduction furnace, it is characterised in that including two pusher-tray type powder being disposed in parallel on support
Last reduction furnace unit, each pusher-tray type powder reduction furnace unit includes pallet, the feed mechanism of delivery tray, Muffle furnace and cooling
Mechanism, feed mechanism, Muffle furnace and cooling body are arranged on support；
The support is divided into upper and lower two-layer, and Muffle furnace and cooling body are arranged on upper strata；The feed mechanism include conveyer,
Feeding device and device for discharging, conveyer are arranged on the lower floor of support；Feeding device and device for discharging are arranged on the two of support
End, feeding device and device for discharging include air lock, be vertically arranged in air lock in lowering or hoisting gear and be horizontally set on lock gas
Pusher on room；The air lock, above offers two stations mouthful, and the lower end of lowering or hoisting gear is provided with for placement tray
Supporting plate, when lowering or hoisting gear is reduced to lower station, supporting plate is flushed with conveyer；The supporting plate of the feeding device rises to work
During position, supporting plate is flushed with the bottom of Muffle furnace；When the supporting plate of the device for discharging rises to station, supporting plate is neat with cooling body
It is flat；
One end of cooling body is provided with reducing gas inlet port on the Muffle furnace；
Load material in the pallet, tray and material are placed into one end of conveyer by the pusher of device for discharging, passed through
Enter after conveyer conveying in the air lock of feeding device, upper station is delivered to by the lowering or hoisting gear of feeding device, then pass through
Pusher enters heating in Muffle furnace, and into cooling in cooling body after heating, tray and material after cooling are filled into discharging
The upper station of supporting plate is put, lower station is delivered to by the lowering or hoisting gear of device for discharging, then carry out discharging；The road that tray and material pass through
Line is upper and lower loop checking installation.
2. according to claim 1 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the top of the feeding device with
Be provided with cartridge between Muffle furnace, the cavity of cartridge is cup, and one end of cup connects with air lock, the other end and
Muffle furnace is connected, and cartridge is provided with fluid pressure type cup door near the one end in air lock, and cup door can will lock gas when closing
Room completely cuts off with cup, and cartridge is connected with Muffle furnace by flange；The cartridge is set near the feed end of Muffle furnace
There are gas combustion apparatus, gas combustion apparatus are connected with cup, Muffle furnace；The lower floor of the support is provided with rear chamber door, rear chamber
Door is located between conveyer and device for discharging.
3. according to claim 1 and 2 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the conveyer includes
Connected by roller chain between the rotating shaft of horizontally disposed rollgang and motor, motor output shaft and rollgang, motor drives
Dynamic rollgang is rotated.
4. according to claim 3 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the cooling body includes inner bag
With parcel water(-cooling) jacket outside the tank, water(-cooling) jacket includes the first water(-cooling) jacket and the second water(-cooling) jacket, one end of inner bag
It is connected by flange with Muffle pot outlet, the other end of inner bag is connected with the top in the air lock of device for discharging by flange；Institute
State inner bag and one end of Muffle furnace is provided with explosion-protection equipment；The explosion-protection equipment 53 includes the venting being opened on inner bag,
Venting is bolted by flangeseal, upper and lower flange, and bolt is arranged with spring, bullet beyond one end of upper flange
Spring is in compressive state.
5. according to claim 1 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the lowering or hoisting gear to set vertically
The hydraulic cylinder put, pushing meanss are horizontally disposed hydraulic cylinder.
6. according to claim 1 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the top cover of the Muffle furnace is to live
Detachable setting is moved, the both sides of Muffle pot and bottom lining set fire resistant heat preserving heat insulation layer, and insulation heat insulation layer includes alumina silicate fibre
Layer and light thermal-insulation brick layer；The supporting brick of Muffle pot lower section laying uses the I grades high straight brick masonry of aluminium profiles heavy standard refractory；Muffle
Tank top is domed, and Muffle pot bottom is arranged with twice beading in parallel along its length；
Heating element heater in Muffle furnace is made spiral helicine resistance wire using high temperature alloy filament winding, and heating element heater is arranged in Muffle pot
Above and below, resistance wire is wrapped on alundum tube, and insulation thermal insulation of the crossbearer in Muffle pot both sides is distinguished at the two ends of alundum tube
On layer；The resistance wire is using single multigroup connection in series-parallel form connection.
7. according to claim 1 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the air lock of the device for discharging
Bottom is provided with roller, and device for discharging is arranged on support by the roller of bottom；The bottom of cooling body is provided with roller, cold
But mechanism is arranged on support by the roller of bottom.
8. according to claim 1 pair of tank pusher-tray type powder reduction furnace, it is characterised in that the top of the Muffle furnace is set
The lower end for having multiple thermocouples, thermocouple is located at two Muffle pots through the top cover of Muffle furnace.
9. the technique that using the double tank pusher-tray type powder reduction furnaces described in claim 1-8 powder materials are carried out with reduction treatment,
It is characterised in that it includes following steps：
Step one, 400 DEG C are preheated to Muffle furnace；
Step 2, by passage to nitrogen is passed through in Muffle furnace, exclude the oxygen in Muffle furnace, and in real-time detection Muffle furnace
Oxygen content；
Step 3, detect after oxygen-containing Gas content in Muffle furnace reached in the range of material handling process, by admission line to
Hydrogen is passed through in Muffle furnace, nitrogen and hydrogen is alternately then passed through by the plenum system of nitrogen, hydrogen, it is ensured that reached in Muffle furnace
To processing atmosphere needed for material treatment, then feed, material is put into pallet, by the hydraulic cylinder being vertically arranged in device for discharging
The near lower station of supporting plate, the pallet that will be equipped with material are placed on supporting plate, then start horizontally disposed hydraulic cylinder in device for discharging,
The piston rod of horizontally disposed hydraulic cylinder is promoted and shifts on rollgang pallet onto, and motor drives rollgang to rotate, then pallet and
Material is sent on the supporting plate of the feeding device of lower station, starts the hydraulic cylinder being vertically arranged in feeding device, pallet and material
Station is promoted to, then starts horizontally disposed hydraulic cylinder in feeding device, the piston rod for being horizontally disposed with hydraulic cylinder is promoted
By pallet and material push-in cup, into Muffle pot, cup door, rear chamber door are then shut off, material is added in reducing atmosphere
Heat, insulation；
Material after step 4, heating enters in cooling body lowers the temperature, and material and pallet after cooling are fed to positioned at upper station
On device for discharging supporting plate, start the hydraulic cylinder being vertically arranged in device for discharging, material and pallet are unloaded by near lower station
Material.
10. according to using the handling process described in claim 9, it is characterised in that the current of cooling water in the water(-cooling) jacket
Direction is with the conveying direction expected conversely, water(-cooling) jacket intake pressure is less than or equal to 2Kg/cm3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710211253.7A CN106871634A (en) | 2017-03-31 | 2017-03-31 | A kind of pair of tank pusher-tray type powder reduction furnace and the technique that reduction treatment is carried out to material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710211253.7A CN106871634A (en) | 2017-03-31 | 2017-03-31 | A kind of pair of tank pusher-tray type powder reduction furnace and the technique that reduction treatment is carried out to material |
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| CN106871634A true CN106871634A (en) | 2017-06-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202382553U (en) * | 2011-11-21 | 2012-08-15 | 山东博大集团有限公司 | Full-closed nitrogen protection pusher tunnel furnace |
| CN202660892U (en) * | 2012-06-15 | 2013-01-09 | 朝阳金河粉末冶金材料有限公司 | Plate belt type reduction furnace |
| CN203033773U (en) * | 2012-11-23 | 2013-07-03 | 重庆协力工业炉有限公司 | High-temperature activating furnace production line |
| CN203810908U (en) * | 2014-05-07 | 2014-09-03 | 鹰潭市安固铜材有限公司 | High-precision oxygen-free silver-copper strip type reduction furnace |
| CN205914768U (en) * | 2016-08-04 | 2017-02-01 | 宁波恒普真空技术有限公司 | Continuous degrease fritting furnace of metal powder injection molding |
| CN205927111U (en) * | 2016-08-04 | 2017-02-08 | 宁波恒普真空技术有限公司 | Metal powder injection molding continuous sintering stove |
| CN206683389U (en) * | 2017-03-31 | 2017-11-28 | 南京迦南炉业有限公司 | A kind of double tank pusher-tray type powder reduction furnaces |
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2017
- 2017-03-31 CN CN201710211253.7A patent/CN106871634A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202382553U (en) * | 2011-11-21 | 2012-08-15 | 山东博大集团有限公司 | Full-closed nitrogen protection pusher tunnel furnace |
| CN202660892U (en) * | 2012-06-15 | 2013-01-09 | 朝阳金河粉末冶金材料有限公司 | Plate belt type reduction furnace |
| CN203033773U (en) * | 2012-11-23 | 2013-07-03 | 重庆协力工业炉有限公司 | High-temperature activating furnace production line |
| CN203810908U (en) * | 2014-05-07 | 2014-09-03 | 鹰潭市安固铜材有限公司 | High-precision oxygen-free silver-copper strip type reduction furnace |
| CN205914768U (en) * | 2016-08-04 | 2017-02-01 | 宁波恒普真空技术有限公司 | Continuous degrease fritting furnace of metal powder injection molding |
| CN205927111U (en) * | 2016-08-04 | 2017-02-08 | 宁波恒普真空技术有限公司 | Metal powder injection molding continuous sintering stove |
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