CN205914768U - Continuous degrease fritting furnace of metal powder injection molding - Google Patents
Continuous degrease fritting furnace of metal powder injection molding Download PDFInfo
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- CN205914768U CN205914768U CN201620835806.7U CN201620835806U CN205914768U CN 205914768 U CN205914768 U CN 205914768U CN 201620835806 U CN201620835806 U CN 201620835806U CN 205914768 U CN205914768 U CN 205914768U
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Abstract
The utility model discloses a continuous degrease fritting furnace of metal powder injection molding, include: loading attachment, debinding furnace, the fritting furnace, the transversely sealing conveyer belt, bypass conveyer belt and transverse conveyor belts, debinding furnace's initiating terminal and loading attachment's end -to -end connection, the terminal of debinding furnace is connected with the one end of transversely sealing conveyer belt, the other end of transversely sealing conveyer belt is connected through first sealed lock chamber with the one end of bypass conveyer belt, the middle part of transversely sealing conveyer belt is connected with the initiating terminal of fritting furnace, the terminal of fritting furnace is connected with transverse conveyor belts's middle part, the other end of bypass conveyer belt corresponds with transverse conveyor belts's one end position, transverse conveyor belts's the other end corresponds with loading attachment's initiating terminal position. The utility model discloses continuous degrease sintering is accomplished to the stability of quality and the uniformity of control product that can be fine. The utility model discloses can also carry out degrease or sintering process alone according to the needs of production, improve the range of application of continuous degrease fritting furnace greatly.
Description
Technical field
This utility model is related to Powder Metallurgy Injection Moulding technical field, more particularly to a kind of metal powder injection molded
Continuous degreasing sintering furnace.
Background technology
Metal powder injection molded, it is the new technology that traditional powder metallurgical technique is combined with plastic forming technology, its
Injection mechanism is: by injector by the mixture of metal dust and binding agent with certain temperature, speed and pressure injection are filled
Full die cavity, cooled setting depanning obtains the prefabricated component of definite shape, size, then deviates from the binding agent in prefabricated component and burnt
Knot, can obtain the product with certain mechanical performance.In its forming technology flow process, defat and sintering be most critical step.De-
Fat is to shape the process that base removes contained binding agent in vivo before sintering.Sintering can make the defat blank of porous shrink densification to be become
There is the product of certain tissue and performance.
With industrial fast development, manufacturer is to improve yield and reduce production cost, debinding furnace and sintering furnace
Scale is done bigger and bigger, and the quality problems of the degreasing sintered product stability of the thing followed and product are more and more significant.
In sum, how to solve continuous degreasing sintering furnace stable drive, production efficiency height and product in use
Stay-in-grade problem, becomes those skilled in the art's problem demanding prompt solution.
Utility model content
The purpose of this utility model is to provide a kind of metal powder injection molded continuous degreasing sintering furnace, above-mentioned existing to solve
Problem with the presence of technology.
For achieving the above object, this utility model provides following scheme: this application provides a kind of metal powder injection
Shape continuous degreasing sintering furnace, include feeding device, debinding furnace, sintering furnace, transverse sealing conveyer belt, bypass conveyer belt and horizontal
Conveyer belt, the initiating terminal of described debinding furnace is connected with the end of described feeding device, and the end of described debinding furnace is horizontal with described
One end of sealing conveyer belt connects, and the other end of described transverse sealing conveyer belt passes through first with one end of described bypass conveyer belt
Sealing lock chamber connects, and the middle part of described transverse sealing conveyer belt is connected with the initiating terminal of described sintering furnace, the end of described sintering furnace
End is connected with the middle part of described transverse conveyor, an end position of the described other end bypassing conveyer belt and described transverse conveyor
Corresponding, the other end of described transverse conveyor is corresponding with the initial end position of described feeding device.
Preferably, described debinding furnace includes defat preheating section, burning zone and the defat section being sequentially communicated, described defat preheating
Section initiating terminal is connected with described feeding device end, and the end of described defat section is passed through double containment lock chamber and passed with described transverse sealing
Band is sent to connect；Described defat section is provided with nitric acid generating meanss and gas-circulating system；Described defat preheating section, described burning zone
With described defat section inwall be provided with adiabator layer and by described adiabator layer around the Muffle passage that connects of integral type,
Described Muffle channel interior is provided with the transmission guipure for transmission material boat, and described transmission guipure is connected by described defat preheating section
To described double containment lock chamber, setting having heaters and thermocouple, described heat between described Muffle passage and described adiabator layer
Galvanic couple runs through described defat furnace body and described adiabator layer.
Preferably, described nitric acid generating meanss include nitric acid holding vessel, nitric acid pump, nitric acid effusion meter and the nitre being sequentially connected
Sour evaporation tank, the nitric acid in described nitric acid holding vessel passes through described nitric acid pump by the c mouth of pipeline and described nitric acid effusion meter enters
In described nitric acid evaporation tank；In nitrogen heater box, heated nitrogen is connected with described nitric acid evaporation tank with valve by pipeline,
Described nitric acid evaporation tank is connected with the circulating line of described gas-circulating system；In described nitric acid evaporation tank, nitric acid flashes to
Nitric acid vapor, described nitric acid vapor and described nitrogen are sufficiently mixed, and described mixed gas flow into the pipe of described gas-circulating system
In road.
Preferably, described defat section side is provided with the first horizontal pipeline, and opposite side is provided with the second horizontal pipeline, and described first
It is provided with some uniform described Muffle channel connections with described debinding furnace between horizontal pipeline and described second horizontal pipeline
First longitudinal direction pipeline, is also communicated with a circulating line between described first horizontal pipeline and described second horizontal pipeline, described follow
Endless tube road is provided with a circulating fan.
Preferably, described gas-circulating system also includes the 3rd horizontal pipeline, and described 3rd horizontal pipeline is provided with some
Second longitudinal direction pipeline, described 3rd horizontal pipeline and the described second longitudinal direction of the corresponding connection of Muffle passage of individual and described debinding furnace
Pipeline, the connection of described circulating line, described first horizontal pipeline, described second horizontal pipeline, first longitudinal direction pipeline pass through Muffle
Passage and described 3rd pipeline and, second longitudinal direction pipeline, circulating fan, circulating line form the blood circulation of a closing；
Preferably, described first horizontal pipeline, the second horizontal pipeline, the 3rd horizontal pipeline, first longitudinal direction pipeline, second indulge
It is provided with heater strip and heat-insulation layer on pipeline and circulating line；Described nitric acid evaporation tank connect described first horizontal pipeline, the
More than either one or two in two horizontal pipelines, the 3rd horizontal pipeline, first longitudinal direction pipeline, second longitudinal direction pipeline or circulating line
Pipeline.
Preferably, described sintering furnace includes sintering preheating section, high temperature sintering section and the cooling section being sequentially communicated, described burning
Knot preheating section initiating terminal is connected with described transverse sealing conveyer belt by the second sealing lock chamber；The end of described cooling section passes through the
Three sealing lock chambers are connected with described transverse conveyor；Described sintering preheating section is provided with burner near the position of initiating terminal；Institute
State cooling section and terminal position is provided with process gas inlet, described process gas is nitrogen and hydrogen；Described high temperature burns
Knot section and sintering preheating section are respectively arranged with oxygen content detector 13,11；Described sintering preheating section and high temperature sintering section are step
Enter beam transmission, described cooling section is Chain conveyer.
Preferably, the outside of described sintering preheating section is conveniently detachable band lid housing, and described enclosure interior is by resistance to
The heat-insulation layer of fire is bonded and is formed, and described heat-insulation layer is divided into insulation cover, thermal insulator two parts, and the bottom of described thermal insulator is provided with Muffle
Cavity body structure；The bottom centre of described thermal insulator is provided with opening, and the bottom of described Muffle cavity body structure is provided with opening, described insulation
Opening on body is corresponding with the opening of described Muffle cavity body structure bottom, and described step rate upper surface passes through described thermal insulator and institute
State the opening of Muffle cavity body structure, communicate with described Muffle cavity body structure；Both sides outside described Muffle cavity body structure are placed with
Heater；Above described Muffle cavity body structure, setting runs through the thermocouple of described heat-insulation layer lid；Described sintering preheating section is close to be risen
The described Muffle cavity body structure at top is communicated with burner by a burning connector.
Preferably, the outside of described high temperature sintering section is conveniently detachable band lid housing, described enclosure interior by
The heat-insulation layer of fire resisting is bonded and is formed, and described heat-insulation layer is divided into lid, body two parts；The bottom centre of described heat-insulation layer is provided with spill horse
Not structure, the bottom of described spill Muffle structure is provided with opening, the installation site of described step rate corresponding with described opening so that
Described step rate upper surface is located in described spill Muffle structure, and described step rate is used for transmitting material boat；Described spill Muffle knot
Heater is placed in structure both sides；The inner side of described heat-insulation layer lid is provided with a planar shaped Muffle knot positioned at described spill Muffle superstructure
Structure；Described spill Muffle superstructure has the thermocouple running through described heat-insulation layer lid and described planar shaped Muffle structure.
Preferably, described bypass conveyer belt, described transverse sealing conveyer belt and described transverse conveyor are all to be passed using chain
The dynamic kind of drive.
This utility model achieves following technique effect with respect to prior art:
Debinding furnace of the present utility model, sintering furnace and bypass conveyer belt be arranged in parallel, can realize simultaneously continuous degreasing stove and
The function of continuous fritting furnace.Complete the part after defat and directly burning is entered by the transverse sealing conveyer belt full of protective atmosphere
Freezing of a furnace, it is to avoid feature contacts air after defat and aoxidize and human contact and produce mass defect, product can be controlled well
The quality stability of product and concordance, complete continuous degreasing SINTERING PRODUCTION.Meanwhile, continuous degreasing sintering furnace of the present utility model
Defat production or SINTERING PRODUCTION can individually be carried out according to the needs producing, substantially increase answering of continuous degreasing sintering furnace
Use scope.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
In required use accompanying drawing be briefly described it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, without having to pay creative labor, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is metal powder injection molded continuous degreasing sintering furnace connection diagram；
Fig. 2 is defat furnace body cross-sectional view of the present utility model；
Fig. 3 is another kind of cross-sectional view of defat furnace body of the present utility model；
Fig. 4 is the partial sectional view of the first gas-circulating system of debinding furnace of the present utility model；
Fig. 5 is the partial sectional view of debinding furnace second gas-circulating system of the present utility model；
Fig. 6 is the schematic three dimensional views of the first gas-circulating system of debinding furnace of the present utility model；
Fig. 7 is the schematic three dimensional views of the second gas-circulating system of debinding furnace of the present utility model；
Fig. 8 is the sintering preheating section cross-sectional view of sintering furnace of the present utility model；
Fig. 9 is the high temperature sintering section cross-sectional view of sintering furnace of the present utility model.
Wherein, 1 is feeding device, and 2 is defat preheating section, and 3 is burning zone, and 4 is defat section, and 5 is gas-circulating system, 51
For circulating line, 511 is the first horizontal pipeline, and 512 is the second horizontal pipeline, and 513 is first longitudinal direction pipeline, and 514 indulge for second
To pipeline, 515 is the 3rd horizontal pipeline, and 52 is nitric acid evaporation tank, and 53 is nitrogen heater box, and 54 is nitric acid pump, and 55 is nitric acid stream
Gauge, 56 is circulating fan, and 6 is double containment lock chamber, and 7 is transverse sealing conveyer belt, and 8 is the second sealing lock chamber, and 9 is burner,
10 is sintering preheating section, and 101 is burning connector, and 102 is thermocouple, and 103 is heat-insulation layer, and 104 is heater, and 105 is Muffle
Cavity body structure, 106 is material boat, and 107 is step rate, and 11 is sintering preheating section oxygen content detector, and 12 is high temperature sintering section,
121 is heater, and 122 is thermocouple, and 123 is heat-insulation layer, and 124 is spill Muffle structure, and 125 is material boat, and 126 is step rate,
127 is planar shaped Muffle structure, and 13 is high temperature sintering section oxygen content detector, and 14 is cooling section, and 15 is transverse conveyor, 16
For the 3rd sealing lock chamber, 17 is bypass conveyer belt, and 18 is the first sealing lock chamber, and 19 is adiabator layer, and 20 is transmission guipure, 21
For expecting boat, 22 is Muffle passage, and 23 is thermocouple, and 24 is heater.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
For making this utility model more understandable, with reference to the accompanying drawings and detailed description this utility model is made detailed further
Thin explanation.
Metal powder injection molded continuous degreasing sintering furnace as shown in figures 1-8, including feeding device 1, debinding furnace, sintering
Stove, transverse sealing conveyer belt 7, bypass conveyer belt 17 and transverse conveyor 15, the end of the initiating terminal of debinding furnace and feeding device 1
Connect, the end of debinding furnace is connected with one end of transverse sealing conveyer belt 7, the other end of transverse sealing conveyer belt 7 is passed with bypass
The one end with 17 is sent to connect by the first sealing lock chamber 18, the middle part of transverse sealing conveyer belt 7 is connected with the initiating terminal of sintering furnace,
The end of sintering furnace is connected with the middle part of transverse conveyor 15, bypasses the other end of conveyer belt 17 and one end of transverse conveyor 15
Position corresponds to, and the other end of transverse conveyor 15 is corresponding with the initial end position of feeding device 1.
Above-mentioned debinding furnace includes defat preheating section 2, burning zone 3 and the defat section 4 being sequentially communicated, and defat preheating section 2 initiates
End is connected with the end of feeding device 1, and the end of defat section 4 is connected with transverse sealing conveyer belt 7 by double containment lock chamber 6.De-
Fat section 4 is provided with nitric acid generating meanss and gas-circulating system 5.Pour nitrogen inside double containment lock chamber 6, prevent defat section 4
End is entered closed chamber by the nitric acid vapor of gasification in debinding furnace.Defat preheating section 2, burning zone 3 and defat section 4 inwall are provided with guarantor
Adiabator layer 19 and by adiabator layer around integral type connection Muffle passage 22, Muffle passage 22 is internally provided with use
In the transmission guipure 20 of transmission material boat 21, transmission guipure 20 is communicated to double containment lock chamber 6, Muffle passage 22 by defat preheating section 2
Setting having heaters 24 and thermocouple 23 and adiabator layer 19 between, thermocouple 23 runs through defat furnace body and adiabator layer
19, heating-up temperature is controlled by thermocouple 23.In the present embodiment, heater 24 can be arranged on Muffle passage 22 as shown in Figure 2
Upper and lower ends are it is also possible to be arranged on the left and right sides of Muffle passage 22 as described in Figure 3.The nitric acid gases of burning zone 3 residual and
Gaseous binding agent is directly burnt, and reaches the non-pollution discharge of production, prevents from polluting environment.Heater 24 and thermocouple 23 are de-
It is provided with multiple in fat stove, make the temperature control in debinding furnace more accurate.
Nitric acid holding vessel that nitric acid generating meanss in the present embodiment include being sequentially connected, nitric acid pump 54, nitric acid effusion meter
55 and nitric acid evaporation tank 52, the nitric acid in nitric acid holding vessel passes through nitric acid pump 54 by c mouth and nitric acid effusion meter 55 enters nitric acid and steams
Send out in case 52；In nitrogen heater box 53, heated nitrogen is connected with nitric acid evaporation tank 52 with valve by pipeline, and nitric acid evaporates
Case 52 is connected with the circulating line 51 of gas-circulating system 5；In nitric acid evaporation tank 52, nitric acid flashes to nitric acid vapor, nitric acid
Steam and nitrogen are sufficiently mixed, in the pipeline of mixed gas inflow gas blood circulation 5.Wherein, nitric acid vapor sloughs shaping base
Binding agent within material, realizes the purpose of defat；The effect of nitrogen is so that oxygen content in debinding furnace is reduced, and prevents from shaping base
Oxidized.
As shown in figs. 4 and 6, defat section 4 side is provided with the first horizontal pipeline 511, and opposite side is provided with the second horizontal pipeline
512, it is provided with some uniform Muffle passages 22 with debinding furnace between the first horizontal pipeline 511 and the second horizontal pipeline 512 even
Logical first longitudinal direction pipeline 513, is also communicated with a circulating line 51 between the first horizontal pipeline 511 and the second horizontal pipeline 512,
Circulating line 51 is provided with a circulating fan 56.When gas runs, in the presence of circulating fan 56, in nitric acid evaporation tank 52
Mixed gas enter the second horizontal pipeline 512 in gas-circulating system, and the mixed gas in the second horizontal pipeline 512 pass through the
One pipe tunnel 513 enters in the space in Muffle passage 22, then flows into the first horizontal pipeline 511, the first horizontal pipeline 511
Interior mixed gas flow in circulating line 51, thus realizing the cyclic process in defat section 4 of mixed gas.
As best shown in figures 5 and 7, gas-circulating system can also adopt second set-up mode, gas cyclic system in figure 6
On the basis of system, also include the 3rd horizontal pipeline 515, the 3rd horizontal pipeline 515 is provided with several and is led to the Muffle of debinding furnace
The second longitudinal direction pipeline 514 of the corresponding connection in road, the 3rd horizontal pipeline 515 is connected with circulating line 51, the first horizontal pipeline 511,
Second horizontal pipeline 512 passes through Muffle passage 22 and second longitudinal direction pipeline 514, the 3rd horizontal pipeline 515, circulating fan 56, follows
Endless tube road 51 forms the blood circulation of a closing.When gas runs, in the presence of circulating fan 56, in nitric acid evaporation tank 52
Mixed gas simultaneously enter the first horizontal pipeline 511 and the second horizontal pipeline 512 in gas-circulating system, the first transverse pipe
Mixed gas in road 511 and the second horizontal pipeline 512 enter the space in Muffle passage 22 by first longitudinal direction pipeline 513
In, then flow into second longitudinal direction pipeline 514, the mixed gas in second longitudinal direction pipeline 514 are pooled to the 3rd horizontal pipeline 515
Interior, flow back to circulating fan position, then flow into circulating line 51, start circulate next time, thus realize mixed gas
Cyclic process in defat section 4.
Using the set-up mode of both the above gas-circulating system, with respect to original gas-circulating system, greatly shorten
Stroke in defat section Muffle passage for the process gas, makes unsticking efficiency, defat efficiency improve, makes the quality of product more have guarantor
Card.
First horizontal pipeline 511, the second horizontal pipeline 512, the 3rd horizontal pipeline 515, first longitudinal direction pipeline 513, second
It is provided with heater strip and heat-insulation layer on pipe tunnel 514 and circulating line 51, make the gas of each position in Muffle passage 22 pure
Cleanliness is consistent with vapor state, and nitric acid evaporation tank 52 connects the first horizontal pipeline 511, the second horizontal pipeline 512, the 3rd transverse pipe
Either one or two above pipeline in road 515, first longitudinal direction pipeline 513, second longitudinal direction pipeline 514 or circulating line 51.
Sintering furnace includes sintering preheating section 10, high temperature sintering section 12 and the cooling section 14 being sequentially communicated, and sinters preheating section 10
Initiating terminal is connected with transverse sealing conveyer belt 7 by the second sealing lock chamber 8；The end of cooling section 14 is by the 3rd sealing lock chamber 16
It is connected with transverse conveyor 15；Sintering preheating section 10 is provided with burner 9 near the position of initiating terminal.Cooling section 14 is near end
Position is provided with process gas inlet a mouth and b mouth, and a mouth is nitrogen inlet, and b mouth is hydrogen inlet.Cooling section 14 end is passed through work
Skill gas hydrogen and nitrogen, control stove internal gas pressure by adjusting the butterfly valve opening of the burner 9 of sintering preheating section 10 initiating terminal,
Process gas direction is in sintering preheating section 10 and high temperature sintering section 12 and material boat 106 and material boat 125 inverted running.High temperature sintering section
12 are respectively arranged with multiple uniform oxygen content detectors 13,11 with sintering preheating section 10, can effectively control sintering furnace
Interior atmosphere is it is ensured that product quality.Sintering preheating section 10 and high temperature sintering section 12 transmit for step rate, and cooling section 14 is Chain conveyer.
By the way of step rate transmission, transmission is more steady.The advance and retreat of sintering preheating section 10 and high temperature sintering section 12 and lifting have respectively
Individually frequency conversion motor controls, stable movement, reliable in action.
As shown in figure 8, the outside of sintering preheating section 10 is conveniently detachable band lid housing, enclosure interior is by the guarantor of fire resisting
Warm layer 103 is bonded and is formed, and heat-insulation layer 103 is divided into insulation cover, thermal insulator two parts, and the bottom of described thermal insulator is provided with Muffle cavity
Structure 105.The bottom centre of thermal insulator 103 is provided with the opening along sintering furnace axial direction, and the bottom of Muffle cavity body structure 105 is provided with out
Mouthful, the opening in thermal insulator is correspondings with the opening of Muffle cavity body structure 105 bottom, step rate 107 upper surface through thermal insulator with
The opening of Muffle cavity body structure 105, is communicated with Muffle cavity body structure 105, and step rate 107 is used for transmitting material boat 106；Muffle cavity
Having heaters 104 is placed in both sides outside structure 105；Muffle cavity body structure 105 top setting runs through the thermocouple of heat-insulation layer lid
102；Sintering preheating section 10 is communicated with burner 9 near the Muffle cavity body structure 105 of initiating terminal by a burning connector 101,
Hazardous gas and the waste gas being burnt by burner 9 in sintering furnace, prevents from polluting environment.Sintering preheating section 10 is to remove into
The remaining binding agent of shape base, prepares for high temperature sintering below.
As shown in figure 9, the outside of high temperature sintering section 12 is conveniently detachable band lid housing, enclosure interior is by the guarantor of fire resisting
Warm layer 123 is bonded and is formed, and heat-insulation layer 123 is divided into lid, body two parts；The bottom centre of heat-insulation layer 123 body is provided with spill Muffle knot
Structure 124, the bottom of spill Muffle structure 124 is provided with opening, the installation site of step rate 126 corresponding with opening so that step rate
126 upper surfaces are located in spill Muffle structure 124, and step rate 126 is used for transmitting material boat 125；Spill Muffle structure 124 both sides are put
Put heater 121；The inner side of heat-insulation layer 123 lid is located at and is provided with a planar shaped Muffle structure 127 above spill Muffle structure 124；
There is the thermocouple 122 running through heat-insulation layer lid and planar shaped Muffle structure 127 above spill Muffle structure 124.
The both sides of the Muffle structure within sintering preheating section 10 and high temperature sintering section 12 are symmetrically placed identical heater.
Multiple control thermocouples and heater are set inside sintering preheating section 10 and high temperature sintering section 12, realize the accurate of two-dimensional directional
Temperature control, makes Part temperature gradually be heated from low to high, until sintering completes, reduces deformation of products and cracking.
Bypass conveyer belt 17, transverse sealing conveyer belt 7 and transverse conveyor 15 are all using the chaindriven kind of drive.
The work process as debinding furnace for this utility model:
Before defat work starts, first passing through heater 24 makes debinding furnace temperature in furnace reach 110 DEG C about, shapes
Base is loaded on material boat 21, and material boat 21 is transported on transmission guipure 20 by feeding device 1, is conveyed into defat by transmission guipure 20 pre-
Hot arc 2, in defat preheating section 2, the shaping base material having just enter into is heated rapidly, prevents the nitric acid vapor of subsequent technique from depositing
On part.Subsequently, material boat 21 is entered in defat section 4 by burning zone 3, is filled with and is added by gas-circulating system 5 in defat section 4
The nitric acid of heat and the mixed gas of nitrogen.Nitric acid vapor is used for sloughing the binding agent shaping within base, and nitrogen is used for protecting shaping
Base prevents it oxidized.Multiple heaters 24 and thermocouple 23 are set in debinding furnace, are controlled in this region by thermocouple 23
Heater 24 it is ensured that in debinding furnace respective regions temperature.The gases being formed in debinding furnace are burnt by burning zone 3 completely,
Prevent it from polluting environment.Complete skimming processes shapes the end that base is transported to defat section 4, beats double containment lock chamber 6, makes shaping base
Enter on transverse sealing conveyer belt 7.Wherein, the full nitrogen of the internal punching of double containment lock chamber 6, prevents the nitric acid vapor of defat section 4 end
Entered in transverse sealing conveyer belt 7 seal cavity by double containment lock chamber 6.Transverse sealing conveyer belt 7 employs airtight cavity structure,
Prevent from completing the shaping base of defat when entering in it, oxidation by air.7 shapings completing defat of transverse sealing conveyer belt
Base is sent to the interface position of bypass conveyer belt 17 and transverse sealing conveyer belt 7, opens the first sealing lock chamber 18, makes shaping base defeated
Deliver on bypass conveyer belt 17.
In the position of bypass conveyer belt 17, testing staff both can detect that defat shaped the defat situation of base it is also possible to wait into
Shape base is transported to transverse conveyor 15 from bypass conveyer belt 17, detects that defat shapes the de- of base in the position of transverse conveyor 15
Fat situation.The qualified shaping base of defat takes off conveyer belt, and shaping base underproof to defat can be defeated by transverse conveyor 15
The initiating terminal delivering to feeding device 1 re-starts above-mentioned skimming processes.When this utility model is used only as defat work, sintering furnace
Part does not work.
The work process as sintering furnace for this utility model:
The material boat loading the good shaping base of defat swings on bypass conveyer belt 17, is entered by Chain conveyer and is full of protectiveness gas
In the transverse sealing conveyer belt 7 of body, material boat is transported to sintering furnace initiating terminal side, opens the second sealing lock chamber 8, and material boat enters and burns
Knot preheating section 10, material boat sintering preheating section 10 and high temperature sintering section 12 transmitted by step rate, temperature from low to high, by setting
Put the thermocouple in regional, control the heater in this region, the direction of motion preset temperature along material boat raises successively.Cold
But section 14 end is passed through process gas hydrogen and nitrogen, is opened by adjusting the butterfly valve of the burner 9 of sintering preheating section 10 initiating terminal
Spend and to control stove internal gas pressure, process gas traffic direction is in sintering preheating section 10 and high temperature sintering section 12 and material boat direction of motion phase
Instead, hazardous gas and the waste gas being burnt in sintering furnace by burner 9.Sinter the shaping base completing slow through cooling section 14
Cool down, open the 3rd sealing lock chamber 16, material boat is transported on transverse conveyor 15, then is delivered to side by transverse conveyor 15
Road conveyer belt 17, sinters qualified shaping base and is removed, and can return burning again for underproof shaping base.This utility model is only used
When making sintering work, debinding furnace part does not work.
The work process as continuous degreasing sintering furnace for this utility model:
First, the shaping base being loaded on material boat 21 is transported on transmission guipure 20 by feeding device 1, then by transmission guipure
20 are conveyed into the defat preheating section 2 reaching desired operating temperatures, and in defat preheating section 2, the shaping base material having just enter into is rapid
Heated, prevent the nitric acid vapor of subsequent technique to be deposited on part.Subsequently, material boat 21 enters defat section 4 by burning zone 3
Interior, it is filled with the mixed gas of the nitric acid being heated by gas-circulating system 5 and nitrogen in defat section 4.Nitric acid vapor is used for sloughing
Shape the binding agent within base, nitrogen is used for protecting shaping base to prevent it oxidized.Multiple heater 24 Hes are set in debinding furnace
Thermocouple 23, by thermocouple 23 control this region in heater 24 it is ensured that in debinding furnace respective regions temperature.Burning zone
The gases being formed in 3 debinding furnaces burn completely, prevent it from polluting environment.Complete skimming processes shaping base be transported to de-
The end of fat section 4, beats double containment lock chamber 6, so that shaping base is entered on transverse sealing conveyer belt 7.Wherein, inside double containment lock chamber 6
The full nitrogen of punching, prevents the nitric acid vapor of defat section 4 end from being entered in transverse sealing conveyer belt 7 seal cavity by double containment lock chamber 6.
Transverse sealing conveyer belt 7 employs airtight cavity structure, prevents from completing the shaping base of defat when entering in it, by air oxygen
Change；Transferred by conveyer belt, can prevent human contact from producing mass defect.Transverse sealing conveyer belt 7 completes defat
Shape the interface position that base is sent to sintering furnace and transverse sealing conveyer belt 7, open the second sealing lock chamber 8, make loading shape base
Material boat be transported to sintering preheating section 10 in.
Material boat sintering preheating section 10 and high temperature sintering section 12 transmit by step rate, temperature from low to high, by arrange
In the thermocouple of regional, control heater in this region it is ensured that in whole work process respective regions temperature, along material
The direction of motion preset temperature of boat raises successively.Cooling section 14 end is passed through process gas hydrogen and nitrogen, is sintered by adjusting
Controlling stove internal gas pressure, process gas traffic direction is in sintering preheating section for the butterfly valve opening of the burner 9 of preheating section 10 initiating terminal
10 and high temperature sintering section 12 with material the boat direction of motion contrary, by burner 9 burning sintering furnace in hazardous gas and waste gas.Burn
Tie the shaping base completing to be slowly cooled through cooling section 14, open the 3rd sealing lock chamber 16, material boat is transported to horizontal biography
Send on band 15.
According to job demand, staff can by controlling the motor of transverse conveyor 15, allow complete degreasing sintered
Shape base and the initial end position of feeding device 1 is delivered to it is also possible to be delivered to side by transverse conveyor 15 by transverse conveyor 15
On road conveyer belt 17.
Qualified shaping base is removed, and can be transported on bypass conveyer belt 17 for underproof shaping base and quickly be returned
Burn.
Apply specific case in this utility model principle of the present utility model and embodiment are set forth, above
The explanation of embodiment is only intended to help understand method of the present utility model and its core concept；Simultaneously for this area one
As technical staff, according to this new thought, all will change in specific embodiments and applications.To sum up institute
State, this specification content should not be construed as the restriction new to this.
Claims (10)
1. a kind of metal powder injection molded continuous degreasing sintering furnace it is characterised in that: include feeding device, debinding furnace, sintering
Stove, transverse sealing conveyer belt, bypass conveyer belt and transverse conveyor, the end of the initiating terminal of described debinding furnace and described feeding device
End connects, and the end of described debinding furnace is connected with one end of described transverse sealing conveyer belt, described transverse sealing conveyer belt another
One end with described bypass conveyer belt one end pass through first seal lock chamber be connected, the middle part of described transverse sealing conveyer belt with described
The initiating terminal of sintering furnace connects, and the end of described sintering furnace is connected with the middle part of described transverse conveyor, described bypass conveyer belt
The other end corresponding with an end position of described transverse conveyor, the other end of described transverse conveyor and described feeding device
Initial end position corresponds to.
2. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 1 it is characterised in that: described de-
Fat stove includes defat preheating section, burning zone and the defat section being sequentially communicated, described defat preheating section initiating terminal and described feeding dress
Set terminal connects, and the end of described defat section is connected with described transverse sealing conveyer belt by double containment lock chamber；Described defat section
It is provided with nitric acid generating meanss and gas-circulating system；Described defat preheating section, described burning zone and described defat section inwall set
Have adiabator layer and by described adiabator layer around integral type connection Muffle passage, described Muffle channel interior sets
It is equipped with the transmission guipure for transmission material boat, described transmission guipure is communicated to described double containment lock chamber by described defat preheating section,
Setting having heaters and thermocouple between described Muffle passage and described adiabator layer, described thermocouple runs through described debinding furnace
Body of heater and described adiabator layer.
3. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 2 it is characterised in that: described nitre
Sour generating meanss include nitric acid holding vessel, nitric acid pump, nitric acid effusion meter and the nitric acid evaporation tank being sequentially connected, described nitric acid storage
Nitric acid in tank passes through described nitric acid pump by the c mouth of pipeline and described nitric acid effusion meter enters in described nitric acid evaporation tank；Nitrogen
In heater box, heated nitrogen is connected with described nitric acid evaporation tank with valve by pipeline, described nitric acid evaporation tank and described gas
The circulating line of systemic circulatory system connects；In described nitric acid evaporation tank, nitric acid flashes to nitric acid vapor, described nitric acid vapor and
Described nitrogen is sufficiently mixed, and described mixed gas flow in the pipeline of described gas-circulating system.
4. a kind of metal powder injection molded continuous degreasing sintering furnace according to Claims 2 or 3 it is characterised in that: institute
State defat section side and be provided with the first horizontal pipeline, opposite side is provided with the second horizontal pipeline, described first horizontal pipeline and described the
It is provided with the first longitudinal direction pipeline of some uniform described Muffle channel connections with described debinding furnace between two horizontal pipelines, described
Also it is communicated with a circulating line, described circulating line is provided with one and follows between first horizontal pipeline and described second horizontal pipeline
Ring blower fan.
5. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 4 is it is characterised in that described gas
Systemic circulatory system also includes the 3rd horizontal pipeline, and described 3rd horizontal pipeline is provided with several and is led to the Muffle of described debinding furnace
The second longitudinal direction pipeline of the corresponding connection in road, described 3rd horizontal pipeline is connected with described second longitudinal direction pipeline, described circulating line,
Described first horizontal pipeline, described second horizontal pipeline pass through Muffle passage and described 3rd horizontal pipeline and circulating line, follow
Ring blower fan forms the blood circulation of a closing.
6. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 4 it is characterised in that: described
Set on one horizontal pipeline, the second horizontal pipeline, the 3rd horizontal pipeline, first longitudinal direction pipeline and second longitudinal direction pipeline and circulating line
It is equipped with heater strip and heat-insulation layer；Described nitric acid evaporation tank connects described first horizontal pipeline, the second horizontal pipeline, the 3rd transverse pipe
Either one or two above pipeline in road, pipe tunnel or circulating line.
7. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 1 it is characterised in that: described burning
Freezing of a furnace includes sintering preheating section, high temperature sintering section and the cooling section being sequentially communicated, and described sintering preheating section initiating terminal passes through second
Sealing lock chamber is connected with described transverse sealing conveyer belt；The end of described cooling section is by the 3rd sealing lock chamber and described horizontal biography
Band is sent to connect；Described sintering preheating section is provided with burner near the position of initiating terminal；Described cooling section sets near terminal position
It is equipped with process gas inlet, described process gas is nitrogen and hydrogen；Described high temperature sintering section and sintering preheating section set respectively
It is equipped with oxygen content detector 13,11；Described sintering preheating section and high temperature sintering section transmit for step rate, and described cooling section is chain
Transmission.
8. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 7 it is characterised in that: described
The outside of sintering preheating section is conveniently detachable band lid housing, and described enclosure interior is bonded by the heat-insulation layer of fire resisting and formed, institute
State heat-insulation layer and be divided into insulation cover, thermal insulator two parts, the bottom of described thermal insulator is provided with Muffle cavity body structure；Described thermal insulator
Bottom centre is provided with opening, and the bottom of described Muffle cavity body structure is provided with opening, the opening in described thermal insulator and described Muffle
The opening of cavity body structure bottom corresponds to, and described step rate upper surface passes through opening of described thermal insulator and described Muffle cavity body structure
Mouthful, communicate with described Muffle cavity body structure；Having heaters is placed in both sides outside described Muffle cavity body structure；Described Muffle cavity
Superstructure setting runs through the thermocouple of described heat-insulation layer lid；Described sintering preheating section is near initiating terminal and described Muffle chamber
Body structure is communicated with burner by a burning connector.
9. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 7 it is characterised in that: described
The outside of high temperature sintering section is conveniently detachable band lid housing, and described enclosure interior is bonded by the heat-insulation layer of fire resisting and formed,
Described heat-insulation layer is divided into lid, body two parts；The bottom centre of described heat-insulation layer body is provided with spill Muffle structure, described spill Muffle
The bottom of structure is provided with opening, the installation site of described step rate corresponding with described opening so that described step rate upper surface position
In described spill Muffle structure, described step rate is used for transmitting material boat；Heater is placed in described spill Muffle structure both sides；Institute
The inner side stating heat-insulation layer lid is provided with a planar shaped Muffle structure positioned at described spill Muffle superstructure；Described spill Muffle structure
There is the thermocouple running through described heat-insulation layer lid and described planar shaped Muffle structure top.
10. a kind of metal powder injection molded continuous degreasing sintering furnace according to claim 1 it is characterised in that: described
Bypass conveyer belt, described transverse sealing conveyer belt and described transverse conveyor are all using the chaindriven kind of drive.
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| CN201620835806.7U CN205914768U (en) | 2016-08-04 | 2016-08-04 | Continuous degrease fritting furnace of metal powder injection molding |
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| CN201620835806.7U CN205914768U (en) | 2016-08-04 | 2016-08-04 | Continuous degrease fritting furnace of metal powder injection molding |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871634A (en) * | 2017-03-31 | 2017-06-20 | 南京迦南炉业有限公司 | A kind of pair of tank pusher-tray type powder reduction furnace and the technique that reduction treatment is carried out to material |
| CN109530684A (en) * | 2018-11-30 | 2019-03-29 | 昆山好岩石金属科技有限公司 | A kind of multi-functional debinding furnace |
| CN110057193A (en) * | 2019-05-06 | 2019-07-26 | 株洲瑞德尔冶金设备制造有限公司 | A kind of integrated sintering furnace of continous way |
| CN110125393A (en) * | 2019-07-03 | 2019-08-16 | 宁波恒普真空技术有限公司 | A kind of lateral transport device of continuous degreasing sintering furnace |
| CN111872382A (en) * | 2019-10-28 | 2020-11-03 | 张家港振江粉末冶金制品有限公司 | Powder metallurgy method for copper product |
| CN112665375A (en) * | 2019-10-15 | 2021-04-16 | 米巴精密零部件（中国）有限公司 | Sintering furnace |
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2016
- 2016-08-04 CN CN201620835806.7U patent/CN205914768U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871634A (en) * | 2017-03-31 | 2017-06-20 | 南京迦南炉业有限公司 | A kind of pair of tank pusher-tray type powder reduction furnace and the technique that reduction treatment is carried out to material |
| CN109530684A (en) * | 2018-11-30 | 2019-03-29 | 昆山好岩石金属科技有限公司 | A kind of multi-functional debinding furnace |
| CN110057193A (en) * | 2019-05-06 | 2019-07-26 | 株洲瑞德尔冶金设备制造有限公司 | A kind of integrated sintering furnace of continous way |
| CN110125393A (en) * | 2019-07-03 | 2019-08-16 | 宁波恒普真空技术有限公司 | A kind of lateral transport device of continuous degreasing sintering furnace |
| CN112665375A (en) * | 2019-10-15 | 2021-04-16 | 米巴精密零部件（中国）有限公司 | Sintering furnace |
| CN111872382A (en) * | 2019-10-28 | 2020-11-03 | 张家港振江粉末冶金制品有限公司 | Powder metallurgy method for copper product |
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