CN208151445U - Heat-treatment furnace suitable for metal increasing material manufacturing - Google Patents
Heat-treatment furnace suitable for metal increasing material manufacturing Download PDFInfo
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- CN208151445U CN208151445U CN201821439295.2U CN201821439295U CN208151445U CN 208151445 U CN208151445 U CN 208151445U CN 201821439295 U CN201821439295 U CN 201821439295U CN 208151445 U CN208151445 U CN 208151445U
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Abstract
The utility model relates to metal material increasing fields, disclose a kind of heat-treatment furnace suitable for metal increasing material manufacturing.It is provided with conveying in the furnace body of the heat-treatment furnace, atmosphere protection box is provided on conveying, atmosphere protection box is connected with air inlet pipe and exhaust pipe.Atmosphere protection box is arranged in the heat-treatment furnace in furnace; part is placed in atmosphere protection box; by being filled with oxygen in protective gas delivery cassette; atmosphere protection box is much smaller relative to space in furnace body; it is not only advantageous to more air thoroughly in delivery cassette; make protective gas full of atmosphere protection box, and can substantially saving and protection gas usage；Heating mechanism can be being uniformly heated for part by part in heating atmosphere protecting box heating box, prevent part from occurring deforming because local temperature is too high or too low and the problem of thermal effectiveness declines；In heat treatment temperature-fall period, protective gas can be passed through by air inlet pipe, accelerate the cooling of part, improve cooling controllable amplitude.
Description
Technical field
The utility model relates to metal material increasing field, especially a kind of heat treatment suitable for metal increasing material manufacturing
Furnace.
Background technique
Increasing material manufacturing is also known as 3D printing, can form complicated shape part, formed precision height, save material, have complexity
The molding cost advantage of article, is able to carry out Personalized service, simplifies production procedure, and energy-saving ring in production process
It protects.It is widely used to the industries such as aerospace, biologic medical, military project, building, automobile, jewelry, mold at present.
According to forming principle, increasing material manufacturing is broadly divided into stereolithograghy (Stereo lithography
Appearance, SLA), laminated solid mass manufacture (Laminated Object Manufacturing, LOM), fused glass pellet
(Fused deposition modeling, FDM), laser near-net-shape (Laser Engineered Net Shaping,
LENS), (Selective is melted in selective laser sintering (Selective laser sintering, SLS), selective laser
Laser melting, SLM), electron beam selective melting (Selective electron beam melting, SEBM) etc..Swash
Light selective melting is different with electron beam selective melting metal 3D printing technique heat source, is that most widely used two metalloid increases at present
Material manufacturing technology.After the completion of metal increasing material manufacturing, inside parts can have residual stress, in order to avoid part deformation or cracking,
It needs to be heat-treated the metal parts after increasing material manufacturing, removes residual stress, obtain better part performance.
Patent CN204848941U discloses a kind of atmosphere protection heat-treatment furnace, installs two blow vents using in furnace body
(air inlet and air outlet) make it more can sufficiently completely cut off air, prevent oxygen from entering and react to pollute with protective gas
The case where part, occurs.
Patent application CN205062118U, which is disclosed, installs convection flow fan on heat-treatment furnace fire door, passes through control system tune
In-furnace temperature is saved, can make that in-furnace temperature and part are rapidly heated and heating effect is uniform.
It is above-mentioned that proximate analysis all is carried out to the heat-treatment furnace device of heat-treatment part, still, all without being directed to increasing material manufacturing
Heat-treatment furnace device in terms of part is studied.Increasing material manufacturing machine parts'precise degree is high, the small volume of most parts, either
Homogeneous heating still completely cuts off air, is all unable to satisfy requirement of the increasing material manufacturing part to heat treatment process.In general, existing heat
There are following many deficiencies for processing unit：
1. since furnace inner space is big, by be filled with protective gas by the qualified horizontal difficulty of Control for Oxygen Content in furnace compared with
Greatly, the gas shield in heat treatment process is not enough：
2, heat-treatment furnace multi-pass crosses electric furnace heating wire heating, and heat is transferred on part by heat radiation and gas conduction, at heat
It conducts heat during reason uneven, the part portion thermal radiation of face electric furnace heating wire is more, and it is excessively high temperature easily occur；Back to electric furnace heating wire
Part portion thermal radiation is few, temperature deficiency easily occurs；
3. after the completion of heat treatment process neutralizes, slow cooling is only able to achieve in furnace, cooling controllable amplitude is small, is unable to satisfy portion
Divide the heat treatment process requirement for needing comparatively fast to cool down；
4. it needs to be filled with more protective gas also due to furnace inner space is big and is just able to achieve atmosphere protection requirement, thus
Cause the waste of protective gas.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of heat-treatment furnaces suitable for metal increasing material manufacturing, make
It meets uniform, strong to the protectiveness of part, saving and protection gas the requirement of heating during heat treatment.
Heat-treatment furnace disclosed by the utility model suitable for metal increasing material manufacturing, including furnace body and for furnace interior
The heating mechanism of heating is provided with conveying in the furnace body, atmosphere protection box, the gas is provided on the conveying
Atmosphere protecting box is connected with air inlet pipe and exhaust pipe.
Preferably, oxygen content monitor is provided in the atmosphere protection box.
Preferably, it is provided with flow controller in the air inlet pipe, is provided with exhaust valve on the exhaust pipe.
Preferably, the heat-treatment furnace suitable for metal increasing material manufacturing, is provided with automatic controller, the exhaust valve
Using solenoid valve, the automatic controller is electrically connected with oxygen content monitor, flow controller and exhaust valve respectively.
Preferably, cooling fan is connected in the furnace body.
Preferably, the furnace body is connected with cooling cycle pipe, and the air inlet of the cooling cycle pipe and gas outlet are and furnace
Internal portion is connected, and the cooling fan is set on cooling cycle pipe, is additionally provided with heat exchanger on the cooling cycle pipe.
Preferably, high temperature alloy chassis is provided in the furnace body, the conveying is set on high temperature alloy chassis,
The high temperature alloy chassis is connected with elevating mechanism.
Preferably, it is soft that the part that the air inlet pipe and exhaust pipe are connected with atmosphere protection box is all made of refractory metal
Pipe.
Preferably, temperature monitor is provided in the atmosphere protection box.
Preferably, the material of the atmosphere protection box is high temperature alloy.
The utility model has the beneficial effects that：Atmosphere protection box is arranged in the heat-treatment furnace in furnace, and part is placed in gas
In atmosphere protecting box, by being filled with oxygen in protective gas delivery cassette, atmosphere protection box is much smaller relative to space in furnace body, no
But is conducive to more air thoroughly in delivery cassette, makes protective gas full of atmosphere protection box, and can substantially saving and protection
Gas usage；Heating mechanism can make being uniformly heated for part by part in heating atmosphere protecting box heating box,
Prevent part from occurring deforming because local temperature is too high or too low or the problem of thermal effectiveness declines；In heat treatment cooling rank
Section, can be passed through protective gas by air inlet pipe, accelerate the cooling of part, improve cooling controllable amplitude.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model.
Appended drawing reference：Furnace body 1, heating mechanism 2, atmosphere protection box 3, air inlet pipe 4, exhaust pipe 5, oxygen content monitor 6, stream
Amount controller 7, exhaust valve 8, cooling fan 9, heat exchanger 10, high temperature alloy chassis 11, conveying 12, elevating mechanism 13, temperature
Spend monitor 14,3D printing part 15, air inlet master switch 16, fire door 17, cooling cycle pipe 18, automatic controller 19.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, the heat-treatment furnace suitable for metal increasing material manufacturing of the utility model, including furnace body 1 and for pair
The heating mechanism 2 heated inside furnace body 1 is provided with conveying 12 in the furnace body 1, is provided with gas on the conveying 12
Atmosphere protecting box 3, the atmosphere protection box 3 are connected with air inlet pipe 4 and exhaust pipe 5.
When carrying out part heat treatment using the heat-treatment furnace, 3D printing part 15 and substrate are first put into atmosphere protection box 3
It is interior, and it is closed to close the lid, and atmosphere protection box 3 is sent into furnace body 1 by conveying 12, connects air inlet pipe 4 and exhaust pipe
5, specific connection type can be docked using socket with interface, convenient to plug at any time, can also be using quick coupling etc. even
Connect mode.After the completion of air inlet pipe 4 and exhaust pipe 5, fire door 17 is closed, guarantor will be filled in atmosphere protection box 3 by beginning through air inlet pipe 4
Gas is protected, oxygen in box is discharged by exhaust pipe 5, protective gas can be using nitrogen, argon gas etc., when in atmosphere protection box 3
Oxygen content reach requirement after, can be by heating mechanism 2 to being heated in furnace, heating mechanism 2 can use existing heat
The heating method for the treatment of furnace, such as the heating of common electric furnace heating wire.Atmosphere protection box 3 is in furnace body 1, and it is direct to be heated mechanism 2
Heating, part are placed in atmosphere protection box 3, by the buffer function of atmosphere protection box 3, the uniform of part may be implemented and add
Heat prevents part from occurring deforming because local temperature is too high or too low or the problem of thermal effectiveness declines.Conveying is set
12, atmosphere protection box 3 is transported by conveying 12, facilitates operator to operate and protects its safe operation process simultaneously, avoid
Scald.Since atmosphere protection box 3 needs to bear the high temperature of heat treatment, high temperature alloy production is generallyd use, can choose city
The high temperature alloy sold, it is preferred to use the high temperature alloy of 1700 DEG C or more high temperature can be born.
It is provided with temperature monitor 14 in the atmosphere protection box 3, to monitor the temperature in atmosphere protection box 3.Work as furnace
After the completion of the heating of interior heat treatment and insulating process, heat treatment enters temperature-fall period and can lead to again to improve cooling rate
It crosses air inlet pipe 4 and is passed through protective gas, the hot gas in box is discharged, gas also is carried out to part in box while preventing oxidation
It is cooling.
Judge whether the oxygen content in atmosphere protection box 3 reaches requirement, can be judged by preset duration of ventilation, such as
Pre-trial, which is ventilated, can make oxygen content in box be reduced to qualified level for 3 minutes, then can set duration of ventilation to 3 minutes or
Person 3.5 minutes, and in order to more intuitively detect the oxygen content in atmosphere protection box 3, setting is aerobic in the atmosphere protection box 3
Content monitor 6.
If the oxygen content in atmosphere protection box 3 be reduced to it is qualified horizontal after, the directly supply of stopping protective gas, in furnace
Oxygen easily infiltrate into atmosphere protection box 3, increase oxygen content, in order to make to begin among oxygen content in box
Eventually in compared with low state, it is provided with flow controller 7 in the air inlet pipe 4, is provided with exhaust valve 8 on the exhaust pipe 5.Work as gas
After oxygen content is reduced to qualified level in atmosphere protecting box 3, exhaust valve 8 can be closed, the guarantor being passed through is reduced by flow controller 7
Gas flow is protected, makes to keep certain positive pressure in atmosphere protection box 3, prevents furnace air from penetrating into.
Aforesaid operations process is undoubtedly relatively complicated according to manual control, and therefore, which is provided with automatically
Controller 19, the automatic controller 19 are electrically connected with oxygen content monitor 6, flow controller 7 and exhaust valve 8 respectively.From
Movement controller 19 directly controls flow controller 7 and realizes that protective gas is passed through by the monitoring data of reception oxygen content monitor 6
The adjustment of flow, while the opening and closing of exhaust valve 8 is controlled, and then complete the automatic control of aforesaid operations, thus in heat treatment process
In avoid waste of manpower, can also save with gas cost, heat-treatment part is made to reach better effect.In addition to this, it automatically controls
Device 19 can also be electrically connected with components such as following temperature monitor 14, elevating mechanisms 13, to realize the automatic control of these components
System.
Existing heat-treatment furnace is usually only able to achieve slow cooling, and cooling controllable amplitude is small, be unable to satisfy part need compared with
The heat treatment process requirement to cool down fastly, other than being passed through protective gas cooling, in order to further improve cooling velocity, the furnace
Body 1 is connected with cooling fan 9.In heat treatment cooling stage, opens cooling fan 9 and external cooling is carried out to atmosphere protection box 3, increase
Fast cooling velocity.Cooling fan 9 can be directly arranged in furnace, can also be by being connected in pipeline and furnace.But due at this time
Fire door 17 is in close state, and the cooling effect of cooling fan 9 is unsatisfactory, and therefore, the furnace body 1 is connected with cooling cycle pipe
18, the air inlet of the cooling cycle pipe 18 is connected with inside furnace body 1 with gas outlet, and the cooling fan 9 is set to cold
But on circulation pipe 18, heat exchanger 10 is additionally provided on the cooling cycle pipe 18.Cooling fan 9 extracts hot gas in furnace out, passes through
It is turned again in furnace after the heat exchange of heat exchanger 10 is cooling, fast cooling can be realized in the case where being not turned on fire door 17, exchanged heat
Device 10 can use air heat exchanger, the existing heat exchange equipment such as water cooling heat exchanger.The external cooling of cooling fan 9 and by atmosphere
The internal cooling that protecting box 3 is passed through protective gas combines, and the fast cooling of part may be implemented；And it can select according to demand
Select whether open cooling fan 9, cooling fan 9 revolving speed and be passed through the flow of protective gas, reach and significantly adjust part
The effect of cooling velocity better adapts to diversified heat treatment process.
Atmosphere protection box 3 is placed on conveying 12, and conveying 12 is usually the bottom being set in furnace body 1,
Therefore 3 leg space ventilation of atmosphere protection box is unsmooth, is unfavorable for the uniform cooling of cooling fan 9, to solve this problem, the furnace body
High temperature alloy chassis 11 is provided in 1, the conveying 12 is set on high temperature alloy chassis 11, the high temperature alloy chassis
11 are connected with elevating mechanism 13.In heat treatment cooling stage, conveying 12 can be increased by elevating mechanism 13, make to cool down
Fan 9 can the lower section to atmosphere protection box 3 divulge information simultaneously, realize atmosphere protection box 3 more rapidly and uniformly cool down.Lifting
Mechanism 13 can use common electric pushrod, screw thread elevating mechanism 13 etc., and furnace high-temperature is for elevating mechanism in order to prevent
13 influence can protrude into the telescopic end of elevating mechanism 13 in furnace body 1, and the power section of elevating mechanism 13 is then set to furnace
Outside body 1.If air inlet pipe 4 and exhaust pipe 5 are all made of hard tube, atmosphere protection box 3 is difficult with lifting structure raising, therefore described
The part that air inlet pipe 4 and exhaust pipe 5 are connected with atmosphere protection box 3 is all made of refractory metal hose.In atmosphere protection box 3
While lifting with elevating mechanism 13, guarantee the good connection of atmosphere protection box 3 and air inlet pipe 4 and exhaust pipe 5.
Below by taking certain 3D printing part 15 as an example, the use process of furnace at the heat of the utility model is illustrated.
1. being put into 3D printing part 15 and substrate in the atmosphere protection box 3 made of high temperature alloy, and close the lid, leads to
It crosses conveying 12 to shift atmosphere protection box 3 in furnace onto, shuts fire door 17.
2. starting heat treatment process；Air inlet master switch 16 are opened, protective gas is filled with atmosphere protection box by 4 mouthfuls of air inlet pipe
3, in order to exclude air in atmosphere protection box 3 from exhaust pipe 5, make protective gas full of entire atmosphere protection box 3, at this time
Throughput control in 0.8~0.9m3/h, when oxygen content monitor 6 monitors that oxygen content is lower than 0.1% in atmosphere protection box 3
When, flow controller 7 will adjust automatically, make throughput lower than 0.1m3/h, and exhaust valve 8 is closed simultaneously, keep atmosphere protection
There is certain positive pressure in box 3, prevents having air entrance during heat treatment, protect the oxygen content in atmosphere protection box 3 always
It holds below 0.1%；
3. heat treatment enters temperature-fall period after the completion of temperature and the soaking time that in-furnace temperature reaches setting, protect at this time
Shield throughput is increased to 0.5-0.6m3/ h, while exhaust valve 8 will be opened, atmosphere protection box 3 is made by the circulation of protective gas
Hot gas discharge in box, also carries out gas cooling to part in box while preventing oxidation；Elevating mechanism 13 will rise automatically
It rising, atmosphere protection box 3 rises with it, and cooling fan 9 will also start, and cooling fan 9 carries out external cooling to atmosphere protection box 3,
Speed cooling velocity.
4. air inlet master switch 16 and cooling fan 9 are automatically closed when temperature drops to 300 DEG C or less in atmosphere protection box 3.
5. after heat treatment, opening fire door 17, atmosphere protection box 3 is drawn by conveying 12 to outside furnace, is completed entire
Heat treatment process.
Claims (10)
1. being suitable for the heat-treatment furnace of metal increasing material manufacturing, including furnace body (1) and for the heater heated inside furnace body (1)
Structure (2), which is characterized in that be provided with conveying (12) in the furnace body (1), be provided with atmosphere on the conveying (12)
Protecting box (3), the atmosphere protection box (3) are connected with air inlet pipe (4) and exhaust pipe (5).
2. being suitable for the heat-treatment furnace of metal increasing material manufacturing as described in claim 1, it is characterised in that：The atmosphere protection box
(3) oxygen content monitor (6) are provided in.
3. being suitable for the heat-treatment furnace of metal increasing material manufacturing as claimed in claim 2, it is characterised in that：The air inlet pipe (4)
On be provided with flow controller (7), be provided with exhaust valve (8) on the exhaust pipe (5).
4. being suitable for the heat-treatment furnace of metal increasing material manufacturing as claimed in claim 3, it is characterised in that：It is provided with automatic control
Device (19), the exhaust valve (8) use solenoid valve, the automatic controller (19) respectively with oxygen content monitor (6), flow control
Device (7) processed and exhaust valve (8) electrical connection.
5. being suitable for the heat-treatment furnace of metal increasing material manufacturing as described in claim 1, it is characterised in that：In the furnace body (1)
It is connected with cooling fan (9).
6. being suitable for the heat-treatment furnace of metal increasing material manufacturing as claimed in claim 5, it is characterised in that：The furnace body (1) is even
It is connected to cooling cycle pipe (18), the air inlet of the cooling cycle pipe (18) is connected with furnace body (1) inside with gas outlet, institute
It states cooling fan (9) to be set on cooling cycle pipe (18), is additionally provided with heat exchanger (10) on the cooling cycle pipe (18).
7. such as the heat-treatment furnace described in claim 5 or 6 suitable for metal increasing material manufacturing, it is characterised in that：The furnace body (1)
It is inside provided with high temperature alloy chassis (11), the conveying (12) is set on high temperature alloy chassis (11), and the high temperature closes
Golden chassis (11) is connected with elevating mechanism (13).
8. being suitable for the heat-treatment furnace of metal increasing material manufacturing as claimed in claim 7, it is characterised in that：The air inlet pipe (4)
And the part that exhaust pipe (5) is connected with atmosphere protection box (3) is all made of refractory metal hose.
9. being suitable for the heat-treatment furnace of metal increasing material manufacturing as described in claim 1, it is characterised in that：The atmosphere protection box
(3) temperature monitor (14) are provided in.
10. being suitable for the heat-treatment furnace of metal increasing material manufacturing as described in claim 1, it is characterised in that：The atmosphere protection
The material of box (3) is high temperature alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439295.2U CN208151445U (en) | 2018-09-03 | 2018-09-03 | Heat-treatment furnace suitable for metal increasing material manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821439295.2U CN208151445U (en) | 2018-09-03 | 2018-09-03 | Heat-treatment furnace suitable for metal increasing material manufacturing |
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| Publication Number | Publication Date |
|---|---|
| CN208151445U true CN208151445U (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821439295.2U Active CN208151445U (en) | 2018-09-03 | 2018-09-03 | Heat-treatment furnace suitable for metal increasing material manufacturing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111867226A (en) * | 2020-08-17 | 2020-10-30 | 国网重庆市电力公司电力科学研究院 | Plasma jet generating system capable of recycling gas |
| CN112126763A (en) * | 2020-09-27 | 2020-12-25 | 铜陵市肆得科技有限责任公司 | Surface heat treatment device for valve machining |
-
2018
- 2018-09-03 CN CN201821439295.2U patent/CN208151445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111867226A (en) * | 2020-08-17 | 2020-10-30 | 国网重庆市电力公司电力科学研究院 | Plasma jet generating system capable of recycling gas |
| CN112126763A (en) * | 2020-09-27 | 2020-12-25 | 铜陵市肆得科技有限责任公司 | Surface heat treatment device for valve machining |
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