CN108504836A - A kind of vacuum quenching device - Google Patents
A kind of vacuum quenching device Download PDFInfo
- Publication number
- CN108504836A CN108504836A CN201810265025.2A CN201810265025A CN108504836A CN 108504836 A CN108504836 A CN 108504836A CN 201810265025 A CN201810265025 A CN 201810265025A CN 108504836 A CN108504836 A CN 108504836A
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- CN
- China
- Prior art keywords
- heater box
- fire door
- cavity
- shaft
- vacuum
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
This application involves metal heat treatmet fields, specifically disclose vacuum quenching device comprising pedestal, furnace body, driving motor, vacuum machine and the nozzle on furnace body；Furnace body includes heater box and fire door, and heater box is rotatablely connected by shaft and pedestal, and nozzle is fixed with pedestal and nozzle stretches into the middle part of fire door in heater box；Driving motor drives heater box rotation and vacuum machine operation, the center of shaft to be equipped with the intercommunicating pore of connection heater box simultaneously, and vacuum machine is connected to intercommunicating pore；Cavity is equipped in the side wall of heater box bottom, the surface that heater box is bonded with fire door is equipped with mounting groove, and sealing strip is equipped in mounting groove, is equipped with expansion chamber in sealing strip, cavity is connected to expansion chamber；Piston is equipped in cavity；Clamp system is equipped in heater box, piston, which slides in and out, can make clamp system clamp workpiece；The periphery of the clamping jaw of clamp system is equipped with electromagnetic heating coil.The centrifugal force that the device is subject to by piston can improve sealing effect of the fire door to heater box.
Description
Technical field
The present invention relates to metal heat treatmet fields, and in particular to a kind of vacuum quenching device.
Background technology
Quenching is a kind of heat treatment process, it refers to that metal works are heated to a certain proper temperature first, is then kept
For a period of time, workpiece then is immersed to the metal heat treatmet process being quickly cooled down in quenching media immediately.The purpose of quenching is to make gold
Then austenite in category coordinates the tempering of different temperatures again to martensite or bainite transformation, to greatly improve the rigid of metal
Degree, hardness, wearability, fatigue strength and toughness, to meet the different requirements of various machine components and tool.Quenching
Technique usually requires to carry out in specific device, wherein vacuum quencher is a kind of common quenching unit, since vacuum is quenched
The treatment temperature of stove is high, and therefore, the application of vacuum quencher is more and more extensive.
Vacuum quencher needs in furnace body at vacuum state, to make workpiece and air when being heated and being quenched to workpiece
Isolation；But the fire door of existing vacuum quencher uses only sealing strip to the sealing of heater box and improves seal；It is close to make
Strip of paper used for sealing reaches preferable sealing effect, then needs to apply sealing strip larger pressure, so that sealing strip reaches enough deformations
Amount；In order to increase pressure of the fire door to sealing strip, usually fire door is hinged in heater box, and torsional spring is set on articulated shaft,
So that fire door generates pressure to sealing strip.But for the ease of opening fire door, the stiffness factor of torsional spring also should not be too large, therefore
When being heated to workpiece, still there is partial air that can enter in heater box.
Invention content
The purpose of the present invention is to provide a kind of vacuum quenching devices, to improve sealing effect of the fire door to heater box.
In order to achieve the above objectives, base case of the invention is as follows：
Vacuum quenching device include pedestal, with the furnace body of pedestal rotation connection, the driving motor on pedestal and true
Empty machine and the nozzle on furnace body；The furnace body includes heater box and fire door, and the bottom of heater box is equipped with shaft, heater box
It is rotatablely connected by shaft and pedestal, fire door is fastened on the top of heater box to close heater box, and nozzle is fixed and sprayed with pedestal
Head is stretched into heater box in the middle part of fire door and is rotatablely connected with fire door；Driving motor drives heater box rotation by shaft, and
Driving motor also drives vacuum machine to run, and the center of shaft is equipped with the intercommunicating pore of connection heater box, and vacuum machine passes through rotary joint
It is connected to intercommunicating pore；Cavity is equipped in the side wall of the heater box bottom, the surface that heater box is bonded with fire door is equipped with mounting groove,
It is equipped with the sealing strip made of elastic material in mounting groove, is equipped with expansion chamber in sealing strip, the cavity is connected to expansion chamber；Institute
State the piston that is equipped with and can be slided along cavity in cavity；Clamp system is equipped in heater box, clamp system includes two along heater box
The clamping unit that center is centrosymmetric, clamping unit include the first rack being connect with piston, are oppositely arranged with the first rack
And be slidably connected with heater box the second rack, be rotatablely connected with heater box and engaged with the first rack and the second rack
Between gear and the clamping jaw that is fixed on the second rack；The periphery of clamping jaw is equipped with electromagnetic heating coil.
The principle of this programme vacuum quenching device is：
Workpiece is placed between two clamping jaws and is surround by electromagnetic heating coil, and driving motor will make vacuum machine be in fortune after starting
Row state, while driving motor can also drive furnace body to rotate.Vacuum machine is run, and fire door makes heater box be in closed state, then
Vacuum machine can vacuumize heater box, to make workpiece be in vacuum state.When furnace body rotates, piston is by centrifugation force effect
By along the radially outward sliding of heater box, squeezed to which piston will generate the air in cavity so that the pressure in cavity increases
Greatly；Due to the expansion chamber that is internally provided with of sealing strip, and cavity is connected to expansion chamber, therefore in cavity when pressure increase, expansion chamber
Pressure will also increase, expanded so as to cause sealing strip, be conducive to seal the gap between fire door and heater box.
Piston by centrifugal force along the radially outward sliding of heater box while, will drive the first rack along heater box radial direction
It slides in and out, therefore the first rack will drive intermediate gear rotation, and intermediate gear drives the second rack into heater box
The heart slides；So that the clamping jaw relative motion of two clamping units, and by Workpiece clamping.When reaching required vacuum degree in heater box
Afterwards, electromagnetic heating coil is powered on, then electromagnetic coil can directly heat workpiece.Nozzle can pass through pipeline and water tank
Or fuel tank connection, and by the way that shut-off valve is arranged on pipeline, can control nozzle and water tank or the connected state of fuel tank；When workpiece quilt
After being heated to required temperature, shut-off valve is opened, nozzle can spray water or oil to workpiece, to carry out water quenching or oil quenching to workpiece.
This programme generate advantageous effect be：
(1) by the way that cavity is arranged on the side wall of heater box, and piston is set in cavity, then when heater box rotates,
Piston can be such that the pressure in cavity increases by centrifugal force, to which sealing strip expands, improve obturation effect of the fire door to heater box；
Therefore during being heated to workpiece, it can be entered by the gap between fire door and heater box to avoid extraneous air and be added
Hot tank, to further reduced the possibility that workpiece is touched with air during being heated to workpiece.
(2) while piston is slid in and out by the effect of centrifugal force, also the clamping jaw of two clamping units can be made close to each other,
To which two clamping jaws can be by Workpiece clamping；When heater box being avoided to rotate, workpiece is added by the effect of centrifugal force with spiral in heater box
Heat coil is hit；And after heater box stops operating, two clamping jaws can unclamp workpiece automatically again.
(3) this programme heats workpiece using electromagnetic heating coil so that main heat concentrates on workpiece week
It encloses, therefore relatively low in the lip temperature that fire door and heater box contact, therefore the material that sealing strip can use is more, favorably
In reduction sealing strip cost.
Preferred embodiment one：It is advanced optimized as to base case, the top of the fire door is equipped with hoisting mechanism, is promoted
Mechanism includes hoist engine and the sucker that is connect with the rope of hoist engine.By sucker suction on fire door, and it is upward by hoist engine
Sucker is promoted, then fire door can be moved up to open heater box, consequently facilitating being placed and taken out workpiece into heater box.
Preferred embodiment two：As advanced optimizing to preferred embodiment one, the periphery of the shaft is welded with driving gear,
Key connection has the driving gear engaged with driving gear on the output shaft of driving motor.Driving motor passes through intermeshing driving
Gear and driving gear driving heater box rotation can make heater box be quickly accelerated to one faster turn compared with V belt translation etc.
Speed, to increase rapidly the centrifugal force that piston is subject to, to improve the seal of heater box.
Preferred embodiment three：As advanced optimizing to preferred embodiment two, the driving motor is dual-axle motor, twin shaft electricity
A wherein drive shaft for machine is for driving heater box to rotate, and another drive shaft of dual-axle motor is for driving vacuum machine to run.It adopts
With dual-axle motor, is conducive to driving motor while driving vacuum machine operation and heater box rotation.
Preferred embodiment four：As advanced optimizing to preferred embodiment three, the fire door is equipped with opposite with mounting groove
The section of annular groove, annular groove is arc.It will be embedded in the annular groove on fire door after sealing strip expansion, to sealing strip
The curved surface that a bending will be formed with the surface of annular groove contact is conducive to improve sealing performance.
Preferred embodiment five：As advanced optimizing to preferred embodiment four, the heating upper box part is equipped with otic placode, fire door
Edge is hinged with the latch hook opposite with otic placode, and latch hook can coordinate with otic placode.Latch hook is rotated down, latch hook will catch on otic placode with to stove
Door is limited；When sealing strip expands, sealing strip will push up fire door, since latch hook and otic placode there is limit to make fire door
With, therefore heater box can be closed.
Description of the drawings
Fig. 1 is the structural schematic diagram of vacuum quenching device embodiment of the present invention.
Specific implementation mode
Below by specific implementation mode, the present invention is described in further detail：
Reference numeral in Figure of description includes：Pedestal 10, driving motor 20, driving gear 21, driving gear 22, sky
Press 30, rotary joint 31, shaft 40, channel 41, air intake duct 42, heater box 50, the first cavity 51, first piston 52, spring
53, mounting groove 54, sealing strip 55, otic placode 56, electromagnetic heating coil 57, the first rack 58, the second rack 59, intermediate gear 510,
Mounting base 511, clamping jaw 512, bell 60, the first cavity 61, the second cavity 62, second piston 63, nozzle 70, latch hook 80.
Embodiment is substantially as shown in Figure 1：
The vacuum quenching device of the present embodiment includes pedestal 10, the furnace body being rotatablely connected with pedestal 10, is mounted on pedestal 10
On driving motor 20 and vacuum machine and the nozzle 70 on furnace body.Furnace body includes heater box 50 and fire door, heater box 50
Open top, and fire door from the top of heater box 50 fasten be open, heater box 50 is closed.Heater box 50 is cylindrical,
It is set on the side wall of 50 upper end of heater box there are four the equally distributed otic placode 56 of circumferential direction along heater box 50, the edge of fire door is hinged with
Four latch hooks 80 opposite with otic placode 56, latch hook 80, which rotates down, can catch on otic placode 56, to connect heater box 50 and otic placode 56.
The bottom of heater box 50 is equipped with shaft 40, and heater box 50 is rotatablely connected by shaft 40 and pedestal 10；Drive is welded in shaft 40
Moving gear 22.Driving motor 20 is mounted on pedestal 10, and driving motor 20 is using dual-axle motor, driving motor 20 its
In in a drive shaft key connection have driving gear 21, driving gear 21 is engaged with driving gear 22, so that driving motor 20 can drive
Dynamic heater box 50 rotates.Vacuum machine is also mounted on pedestal 10, and another drive shaft of driving motor 20 is connect with vacuum machine, to drive
Dynamic vacuum machine operation.Shaft 40 is hollow shaft, i.e. shaft 40 is internally provided with the channel 41 being connected to heater box 50, and vacuum machine passes through
Rotary joint 31 is connect with shaft 40, is connected to heater box 50 with vacuum machine.Nozzle 70 is fixed by fixed link and pedestal 10,
Nozzle 70 passes through fire door and stretches into heater box 50, and nozzle 70 is rotatablely connected with fire door.
It is equipped with the first cavity 51 in the side wall of 50 bottom of heater box, the diameter of the length direction of the first cavity 51 along heater box 50
To, and it is equipped with first piston 52 in the first cavity 51, first piston 52 is made of lead, to increase piston mass.Heater box 50
Mounting groove 54 is offered on top surface, is equipped with sealing strip 55 made of rubber in mounting groove 54, sealing strip 55 is bonded in mounting groove
In 54；Expansion chamber is equipped in sealing strip 55, the first cavity 51 is connected to close to 50 side wall one end of heater box with expansion chamber, and first is empty
51 other end of chamber is closed by piston so that the first cavity 51 forms a confined space.When heater box 50 rotates, first piston
52 will be slid in and out by centrifugation force effect along the first cavity 51, to which first piston 52 makes the air squeezed in the first cavity 51
It obtains pressure in the first cavity 51 to increase, then sealing strip 55 expands.The second cavity, the length direction edge of the second cavity are equipped in fire door
The radial setting of fire door；Second cavity is double-layer structure, and the second cavity is by the first cavity 61 being arranged from top to bottom and the second chamber
Body 62 is constituted, and the first cavity 61 is connected to the second cavity 62 close to the one end at furnace body center.Fire door is equipped with and 54 phase of mounting groove
To annular groove, the section of annular groove is arc；And second one end and annular groove of the cavity 62 close to fire door edge connect
It is logical.It is equipped with second piston 63 in first cavity 61, second piston 63 is also made of lead.After fire door is fastened with heater box 50, add
While hot tank 50 rotates, fire door also will together be rotated with heater box 50, to which second piston 63 also will be by centrifugation force effect simultaneously
Towards the boundary slip of fire door；Then the air in the second cavity 62 will be inhaled into the first cavity 61, therefore in the second cavity 62
Pressure reduce.I.e. in furnace body rotation process, sealing strip 55 will be expanded to close the gap between heater box 50 and fire door, and
Annular groove will generate sealing strip 55 suction to adsorb sealing strip 55 simultaneously, be imitated to the sealing of heater box 50 to improve fire door
Fruit.
Clamp system is equipped in heater box 50, clamp system includes two clampings being centrosymmetric along 50 center of heater box
Unit.The mounting base 511 for installing clamp system is equipped in heater box 50, clamping unit includes two the first teeth being oppositely arranged
Item 58 and the second rack 59, the first rack 58 and the second rack 59 are slidably connected with mounting base 511, clamping unit further include with
Mounting base 511 be rotatablely connected intermediate gear 510 and with 59 fixed clamping jaw 512 of the second rack, intermediate gear 510 and first
Rack 58 and the second rack 59 engage, so that when the first rack 58 slides, the second rack 59 will slide round about.
First rack 58 and first piston 52 are connected by spring 53, i.e., one end of spring 53 is fixed with first piston 52, spring 53
The other end and the first rack 58 are fixed, to which when piston slides, piston will generate pulling force by spring 53 to the first rack 58
To drive the sliding of the first rack 58.The periphery of clamping jaw 512 is equipped with electromagnetic heating coil 57, and two clamping jaws 512 are by piece-holder in electricity
It in magnetic heating coil 57, and is powered, then workpiece can be heated to electromagnetic heating coil 57.
The specific work process of the present embodiment vacuum quenching device is：
The top of fire door is equipped with hoisting mechanism, and hoisting mechanism includes hoist engine and is fixed on the end of the rope of hoist engine
Sucker.Be rotated up latch hook 80, when latch hook 80 be detached from and coordinate with otic placode 56；And by sucker suction on fire door, then pass through elevator
Machine is lifted up sucker, then can open heater box 50, in order to be placed and taken out workpiece into heater box 50.
Workpiece is placed in electromagnetic heating coil 57, and makes workpiece between two clamping jaws 512, then will be added by fire door
Hot tank 50 is closed.Then starting driving motor 20 makes heater box 50 rotate, while vacuum machine is run.First piston 52 and second is lived
Plug 63, along the radially outward sliding of heater box 50, is increased to the pressure of expansion chamber in sealing strip 55 by centrifugal force, makes sealing strip
55 expand and are pressed on fire door；Annular groove generates suction to sealing strip 55 simultaneously, then sealing strip 55 will be attracted to fire door
On, to which sealing effect of the fire door to heater box 50 can be improved.While first piston 52 slides, 58 edge of the first rack will be driven
The radially outward sliding of heater box 50, then the second rack 59 is slided to the center of heater box 50, so that two clamping jaws 512 are opposite
Movement, and by Workpiece clamping.After reaching required vacuum degree in heater box 50, electromagnetic heating coil 57 is powered on, then it is electric
Magnetic coil can directly heat workpiece.
Nozzle 70 is connected to by pipeline with fuel tank, and shut-off valve is provided on pipeline；When workpiece is heated to required temperature
Afterwards, shut-off valve is opened, nozzle 70 can be to workpiece oil spout, to carry out oil quenching to workpiece.In addition, sprayed in order to avoid nozzle 70
Oil enters in vacuum machine, and air intake duct 42 is equipped in heater box 50, and the lower end of air intake duct 42 is connected to the channel 41 inside shaft 40,
The upper end of air intake duct 42 is connected to the top of heater box 50.
Above-described is only the embodiment of the present invention, and the common sense such as well known concrete structure and characteristic are not made herein in scheme
Excessive description.It, without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, these all do not interfere with what the present invention was implemented
Effect and patent practicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as specific implementation mode can be used for explaining the content of claim.
Claims (6)
1. a kind of vacuum quenching device, it is characterised in that：Including pedestal, with pedestal rotation connection furnace body, be mounted on pedestal on
Driving motor and vacuum machine and the nozzle on furnace body；The furnace body includes heater box and fire door, the bottom of heater box
Equipped with shaft, heater box is rotatablely connected by shaft and pedestal, and fire door is fastened on the top of heater box to close heater box, nozzle
It is fixed with pedestal and nozzle is stretched into heater box in the middle part of fire door and is rotatablely connected with fire door；Driving motor is driven by shaft
Heater box rotates, and driving motor also drives vacuum machine to run, and the center of shaft is equipped with the intercommunicating pore of connection heater box, vacuum machine
It is connected to intercommunicating pore by rotary joint；Cavity, the table that heater box is bonded with fire door are equipped in the side wall of the heater box bottom
Face is equipped with mounting groove, and the sealing strip made of elastic material is equipped in mounting groove, is equipped with expansion chamber in sealing strip, the cavity with
Expansion chamber is connected to；The piston that can be slided along cavity is equipped in the cavity；Clamp system is equipped in heater box, clamp system includes
Two clamping units being centrosymmetric along heater box center, clamping unit include the first rack being connect with piston and first
Rack be oppositely arranged and be slidably connected with heater box the second rack, with heater box rotation connection and with the first rack and the second tooth
The intermediate gear that item engages and the clamping jaw being fixed on the second rack；The periphery of clamping jaw is equipped with electromagnetic heating coil.
2. vacuum quenching device according to claim 1, it is characterised in that：The top of the fire door is equipped with hoisting mechanism,
Hoisting mechanism includes hoist engine and the sucker that is connect with the rope of hoist engine.
3. vacuum quenching device according to claim 2, it is characterised in that：The periphery of the shaft is welded with sliding tooth
It takes turns, the driving gear that there is key connection and driving gear engages on the output shaft of driving motor.
4. vacuum quenching device according to claim 3, it is characterised in that：The driving motor is dual-axle motor, twin shaft
A wherein drive shaft for motor is for driving heater box to rotate, and another drive shaft of dual-axle motor is for driving vacuum machine to run.
5. vacuum quenching device according to claim 4, it is characterised in that：The fire door is equipped with opposite with mounting groove
The section of annular groove, annular groove is arc.
6. vacuum quenching device according to claim 5, it is characterised in that：The heating upper box part is equipped with otic placode, fire door
Edge be hinged with the latch hook opposite with otic placode, latch hook can coordinate with otic placode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265025.2A CN108504836B (en) | 2018-03-28 | 2018-03-28 | A kind of vacuum quenching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810265025.2A CN108504836B (en) | 2018-03-28 | 2018-03-28 | A kind of vacuum quenching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108504836A true CN108504836A (en) | 2018-09-07 |
| CN108504836B CN108504836B (en) | 2019-07-09 |
Family
ID=63379113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810265025.2A Active CN108504836B (en) | 2018-03-28 | 2018-03-28 | A kind of vacuum quenching device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108504836B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609741A (en) * | 2019-02-19 | 2019-04-12 | 西安工业大学 | It is equipped with the Induction Hardening Machine of double frequency heating power supply |
| CN110551884A (en) * | 2019-09-16 | 2019-12-10 | 湖州昱日汽车配件有限公司 | Continuous quenching device for automobile parts |
| CN114754571A (en) * | 2022-04-06 | 2022-07-15 | 郭东鑫 | Vacuum tempering furnace for processing magnesium fluoride material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011078628A3 (en) * | 2009-12-24 | 2011-11-10 | Lg Innotek Co., Ltd. | Heat treatment container for vacuum heat treatment apparatus |
| CN202415636U (en) * | 2011-12-31 | 2012-09-05 | 海盐华辰工业炉有限公司 | Sealing device for furnace door of box type protective atmosphere heat treatment furnace |
| CN206396277U (en) * | 2016-12-01 | 2017-08-11 | 上海先越冶金技术股份有限公司 | A kind of air-tight structure of air-quenching furnace |
| CN206467272U (en) * | 2017-02-24 | 2017-09-05 | 浙江金石家居用品有限公司 | The hermatic door of the vacuum oil quenching heat-treatment furnace of knife for kitchen |
-
2018
- 2018-03-28 CN CN201810265025.2A patent/CN108504836B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011078628A3 (en) * | 2009-12-24 | 2011-11-10 | Lg Innotek Co., Ltd. | Heat treatment container for vacuum heat treatment apparatus |
| CN202415636U (en) * | 2011-12-31 | 2012-09-05 | 海盐华辰工业炉有限公司 | Sealing device for furnace door of box type protective atmosphere heat treatment furnace |
| CN206396277U (en) * | 2016-12-01 | 2017-08-11 | 上海先越冶金技术股份有限公司 | A kind of air-tight structure of air-quenching furnace |
| CN206467272U (en) * | 2017-02-24 | 2017-09-05 | 浙江金石家居用品有限公司 | The hermatic door of the vacuum oil quenching heat-treatment furnace of knife for kitchen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109609741A (en) * | 2019-02-19 | 2019-04-12 | 西安工业大学 | It is equipped with the Induction Hardening Machine of double frequency heating power supply |
| CN110551884A (en) * | 2019-09-16 | 2019-12-10 | 湖州昱日汽车配件有限公司 | Continuous quenching device for automobile parts |
| CN114754571A (en) * | 2022-04-06 | 2022-07-15 | 郭东鑫 | Vacuum tempering furnace for processing magnesium fluoride material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108504836B (en) | 2019-07-09 |
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