CN206772000U - Vacuum melting furnace - Google Patents
Vacuum melting furnace Download PDFInfo
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- CN206772000U CN206772000U CN201720480929.8U CN201720480929U CN206772000U CN 206772000 U CN206772000 U CN 206772000U CN 201720480929 U CN201720480929 U CN 201720480929U CN 206772000 U CN206772000 U CN 206772000U
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- main shaft
- crucible
- working chamber
- melting furnace
- vacuum melting
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Abstract
It the utility model is related to 3D printing increasing material manufacturing and metallurgical technology field, there is provided a kind of vacuum melting furnace.The vacuum melting furnace includes controller, motor, main shaft, working chamber and the crucible being arranged in working chamber；One end of main shaft is connected with motor, the other end passes through the side wall of working chamber and is connected with crucible, crucible is provided with heater block, and heater block and motor are connected with controller, and the inside of main shaft has the passage for leading to the power circuit of heater block outside working chamber.This vacuum melting furnace realizes the automatic turning of crucible by the cooperation of motor and main shaft, the problem of not only solving manual operation inconvenience, and additionally use the main shaft with inner passage, formed and sealed with working chamber using the outside of main shaft, and the passage inside main shaft can also completely cut off the connection line of heater block in it, thus it can will be both arranged on for the mechanism for driving crucible to overturn outside working chamber, avoid being influenceed by high temperature, good sealing can be accomplished again.
Description
Technical field
It the utility model is related to 3D printing increasing material manufacturing and metallurgical technology field, and in particular to a kind of vacuum melting furnace.
Background technology
Metal material is always the important materials needed for social and economic development, is occupied always predominantly in material industry
Position.In the middle of the 19th century, after the appearance of open hearth and converter steeling technology, the mankind have really stepped into the steel epoch.In the 1940s,
Vacuum melting technology comes out, and the technology is applied to melting high quality, high-purity, the metal of infusibility.Metal dust is material production
The important branch of industry, using metal dust, the workpiece of excellent performance can be prepared.In recent years, with the leather of 3D printing technique
Newly, industrial circle is more urgent to the demand of metal dust, and suitable for 3D printing metal dust, it is necessary to possess high-purity,
The features such as low oxygen content.Therefore, the first choice of 3D printing metal dust preparation section link is turned into using vacuum melting technology.
At present, high pressure gas atomization is one of conventional method for preparing 3D printing metal dust, the high pressure gas with crucible
Atomization equipment investment is small, production cost is relatively low, suitable for producing most of metal dust.The metal of existing this method
Melting process, after molten metal fusing uniformly, melting kettle is rotated by manual operation and forms potting syrup, operator is in rotating crucible
During also to observe the cast situation of melting intracavitary molten metal simultaneously, once molten steel leakage or poured to heater block, part
Or cavity will be burned, and need emergent stopping to operate.
Therefore, existing method has the following disadvantages：First, process hand labor intensity is big, the big crucible duration of pouring exists
Between 15~30 minutes, in this period, operator will switching handle, labor intensity be bigger always；Second, prolonged people
Work intensive work, operator can not maintain to pour into a mould the angle of liquid stream always, it is impossible to realize stability contorting；Third, in emergency
Under, operator, it is difficult to press predetermined processing, easily triggers security incident because carrying out two work simultaneously.
Although there is also the vacuum melting furnace that some can realize crucible automatic turning in existing technology, due to vacuum melting
The melting indoor temperature of stove is higher, and also needs to ensure that working chamber has enough seals, so if will be used to drive earthenware
The motor of crucible upset is arranged in working chamber, then motor, each connection line and pipeline etc. are all highly susceptible to the shadow of high temperature
Ring and break down；And if it will be arranged on for the motor for driving crucible to overturn outside working chamber, then can not ensure well again
The sealing of working chamber, thus the vacuum melting furnace with crucible self-turnover more of the prior art using it is upper all
In the presence of it is certain the defects of.
Utility model content
(1) technical problems to be solved
The purpose of this utility model is to provide a kind of vacuum melting furnace that can realize crucible automatic turning.
(2) technical scheme
To achieve these goals, the utility model provides a kind of vacuum melting furnace, and the vacuum melting furnace includes control
Device, motor, main shaft, working chamber and the crucible being arranged in the working chamber；One end of the main shaft connects with motor transmission
Connect, the other end passes through the side wall of the working chamber and is connected with the crucible, and the crucible is provided with heater block, described to add
Thermal part and motor are connected with the controller, and the inside of the main shaft, which has, leads to the power circuit of the heater block
Passage outside the working chamber.
Preferably, the main shaft is provided with lip ring, and the lip ring is used to melt with described in the main shaft
Formation seals between refining the side wall of room.
Preferably, the lip ring is located at the outside of the working chamber.
Preferably, the motor is connected by gearbox with the spindle drive；The gearbox has a shift fork, described group
Pitch for controlling the clutch between the gear on the gear and the motor in the gearbox；The main shaft is provided with handle.
Preferably, the handle has counterweight.
Preferably, support is provided with the working chamber, the support is used to the heater block being fixed on the crucible,
The main shaft is connected by the support with the crucible.
Preferably, the induction coil is provided with water-cooling structure, and the power circuit includes at least two water-cooled coppers, two
Inlet pipeline and water return pipeline of the water-cooled copper respectively as the water-cooling structure.
Preferably, the heater block is resistance.
Preferably, the controller has remote control.
Preferably, the main shaft is connected with the middle and upper part of the crucible.
(3) beneficial effect
A kind of vacuum melting furnace provided by the utility model, the automatic turning of crucible is realized by the cooperation of motor and main shaft
Turn, the problem of not only solving manual operation inconvenience, and additionally use the main shaft with inner passage, utilize the outside of main shaft
Formed and sealed with working chamber, and the passage inside main shaft can also completely cut off the connection line of heater block in it, thus both
It can will be arranged on for the mechanism for driving crucible to overturn outside working chamber, avoid being influenceed by high temperature, can accomplish again good
Sealing.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of vacuum melting furnace of the utility model embodiment；
Fig. 2 is a kind of workflow diagram of vacuum melting furnace of the utility model embodiment.
In figure：
1st, working chamber；2nd, support；3rd, crucible；4th, heat-insulation layer；5th, heater block；6th, lip ring；7th, main shaft；8th, hand
Handle；9th, shaft coupling；10th, gearbox；11st, motor；12-1, controller；12-3, point driving switch；12-4, linked switch.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is part of the embodiment of the present utility model, rather than whole embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment provide a kind of vacuum melting furnace, including controller 12-1, motor 11,
Main shaft 7, working chamber 1 and the crucible being arranged in working chamber 1；Crucible, which is provided with, to be used to form heating to the metal material base in crucible
Heater block 5, the heater block 5 both can be induction coil or resistance, and the present embodiment is using the line of induction
Circle, because not only the thermal efficiency is high for the mode of heating of electromagnetic induction, and insulation can also be set up between induction coil and crucible
Layer 4, the surrounding of crucible and bottom are wrapped up using heat-insulation layer 4, so can further improve the thermal efficiency；Motor 11 is located at melting
Outside room 1, motor 11 can realize the drive connection between main shaft 7 by reductor and shaft coupling 9；The other end of main shaft 7 passes through
The side wall of working chamber 1 is simultaneously connected by induction coil with crucible, so be will pass through the rotation of motor 11 and is realized turning over for crucible
Turn.
Controller 12-1 can be PLC control system, be connected respectively with motor 11 and heater block 5, by motor
Control and realize the automatic turning of crucible；The inside of main shaft 7 has channel design, for accommodating heater block 5 and controller 12-
Connection line between 1, and the end of main shaft 7 is then tightly connected with heater block 5；Controller 12-1 can integrated power supply module,
Power module is connected by circuit with heater block 5, and such controller 12-1 need to only be realized by the control to power module
The start and stop of heater block 5.
The vacuum melting furnace of the present embodiment realizes the automatic turning of crucible by the cooperation between motor 11 and main shaft 7, no
The problem of address only manual operation inconvenience, and additionally use the main shaft 7 with inner passage, using main shaft 7 outside with
Working chamber 1 forms sealing, and the passage inside main shaft 7 can also completely cut off the power circuit of heater block 5 in it, thus both
It can will be arranged on for the mechanism for driving crucible to overturn outside working chamber 1, avoid being influenceed by high temperature, can accomplish again good
Sealing.
Lip ring 6 can also be set on above-mentioned main shaft 7, the lip ring 6 can be tightly connected disk, for
Sealing is formed between the side wall of main shaft 7 and working chamber 1；And the lip ring 6 is preferably located at the outside of working chamber 1, so
For the working chamber 1 under environment under low pressure, for lip ring 6 due to being acted on by negative pressure, sealing effectiveness can be more preferable.
Support 2 can also be set in working chamber 1 and positioned at the side of crucible, the support 2 can be distributed in the two of crucible 3
Side, for heater block 5 to be fixed on into crucible 3, main shaft 7 is connected by support 2 with the side of crucible 3；The branch of the opposite side of crucible 3
Frame 2 can also be rotatablely connected by the side wall of rotating shaft and working chamber 1, to ensure that main shaft 7 being capable of smooth rotation.
Main shaft 7 is preferably to be connected with the middle and upper part of crucible 3, and such crucible rotates close to original position, the melting gold in crucible
Category is not susceptible to vibrate during upset, and the amplitude of fluctuation of crucible opening also will not be excessive.
Motor 11 can be connected by gearbox 10 and main shaft 7, and gearbox has shift fork, and shift fork is used to control gearbox
The clutch between gear on interior gear and motor 11, main shaft 7 are provided with handle 8, thus can realize manual mode with it is electronic
Switching between pattern.
Heater block 5 can include induction coil, and induction coil is provided with water-cooling structure, and the power circuit of induction coil is extremely
Include two water-cooled coppers less, two water-cooled coppers respectively as the water-cooling structure inlet pipeline and water return pipeline, without
Individually avoid damage to its sealing in the upper shed of working chamber 1 again.
In conjunction with shown in Fig. 2, whole process of the present utility model is：1. feed → 2. vacuumize → 3. reversely charging protection
Gas → 4. melting → 5. upset cast → 6. replying state, specific implementation step are as follows：
1. feed：Working chamber 1 is opened, metal charge base is loaded into crucible 3.
2. vacuumize：Start mechanical pump to vacuumize working chamber 1, be evacuated to 500Pa；Start lobe pump, working chamber 1 is taken out very
Sky, it is evacuated to below 5Pa；Start diffusion pump to vacuumize working chamber 1, vacuum is evacuated to 6.63 × 10-3During below Pa, termination of pumping.
3. reversely charging protective gas：Inert gas, charge 0.06MPa are filled with into working chamber 1.
4. melting：Start heater block 5, it is uniform to molten metal fusing to start smelting metal material base.
5. upset cast, specifically include following several operator schemes：
5.1 Manual Mode
PLC 12-1 can be furnished with remote control, and remote control is provided with point driving switch 12-3；It is to transfer speed change in crawl operation
The shift fork of case 10, the gear of motor 11 is engaged with the gear of gearbox 10, press point driving switch 12-3, PLC 12-1 is by crawl
Instruction is transmitted to motor 11, the gear rotation of motor 11, drives reducer gear to rotate a certain angle, passes through shaft coupling 9 and master
Axle 7, spinning movement is driven to the upset for melting kettle 3, realizing melting kettle 3.Reducer gear upset angle signal by
Encoder is gathered and fed back to PLC 12-1, and the crawl of melting kettle 3 completes 0 ° → 90 ° upsets.It is easy to by straighforward operation
When operator implements crawl action, the cast situation of the inner metal liquid of working chamber 1 is observed.Long-press point driving switch 12-3, then melting earthenware
Crucible 3 completes 0 ° → 90 ° linkage rotary movements.
5.2 linkage pattern
The shift fork of gearbox 10 is transferred, the gear of motor 11 is engaged with the gear of gearbox 10, presses linked switch 14-4, PLC
Linkage instruction is transmitted to motor 11 by controller 12-1, the rotation of the gear of motor 11, is driven reducer gear rotation, is reached controller
The maximum of the default reducer gear flip angles of 12-1, and by shaft coupling 9 and main shaft 7, spinning movement is driven to molten
Crucible 3 is refined, melting kettle 3 completes 0 ° → 90 ° continual upsets.Linked switch 14-4 is arranged in the distant of PLC 12-1
In control, when person easy to operation implements linkage action, the cast situation of the inner metal liquid of working chamber 1 is observed.Melting kettle 30 ° →
When 90 ° of upsets are to any angle, linked switch 14-4 is pressed, crucible 3 stops upset, presses linked switch 14-4, crucible 3 again
The continual rotary movement for being accomplished to 90 ° will be continued.
5.3 artificial inverted patterns
This vacuum melting furnace is provided with artificial inverted pattern, stopping production caused by prevent the failures such as motor 11, reductor.Transfer
The shift fork of gearbox 10, the gear of motor 11 is set to be separated with the gear of gearbox 10, operator can realize melting kettle by pulling handle 8
3 rotary movements, in 0 ° → 90 ° upsets, it can also set one spacing, crucible 3 can be fixed under 9 angles every 10 °.Handle
8 are provided with counterweight, make manual operation more laborsaving.
6. replying state：
6.1 Manual Mode
The gear of motor 11 is in engagement with the gear of gearbox 10, and the crawl of melting kettle 3 is completed 0 ° → 90 ° upsets, reached
To the maximum of the default reducer gear flip angles of controller 12-1, then by point driving switch 12-3, then melting kettle 3 exists
90 ° → 0 ° crawl is replied.Now, long-press point driving switch 12-3, the then complete in 90 ° → 0 ° of linkage reply action of melting kettle 3.
6.2 linkage pattern
The gear of motor 11 is in engagement with the gear of gearbox 10, and melting kettle 3 completes 0 ° → 90 ° upsets, reaches control
The maximum of the default reducer gear flip angles of device 12-1 processed, then by linked switch 14-4, then melting kettle 3 is complete in 90 °
→ 0 ° of uninterrupted reply.Melting kettle 3 presses linked switch 14-4 when returning back to any angle for 90 ° → 0 °, and crucible 3 stops
Reply, press linked switch 14-4 again, crucible 3 will continue the continual complete reply for being angled into 0 ° and act.
6.3 artificial reply patterns
The shift fork of gearbox 10 is transferred, the gear of motor 11 is separated with the gear of gearbox 10, operator can be by pulling handle 8
The rotary movement of melting kettle 3 is realized, in 90 ° → 0 ° reply, has every 10 ° one spacing, crucible 3 can be fixed under 9 angles.
The utility model device passes through PLC 12-1 motors 11, the tooth of motor 11 after molten metal fusing uniformly
Wheel rotation, reducer gear rotation is driven, and by shaft coupling 9 and main shaft 7, spinning movement is driven to melting kettle 3, completed
The pouring metal melt action of the automatic turning of crucible 3.During operator without manual overturning crucible 3, observation melting chamber can be absorbed in
Indoor potting syrup situation, so as to reduce labor intensity and reduce potential safety hazard.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (10)
- A kind of 1. vacuum melting furnace, it is characterised in that：Including controller, motor, main shaft, working chamber and it is arranged on the working chamber Interior crucible；One end of the main shaft and the motor are connected, the other end through the working chamber side wall and with it is described Crucible connects, and the crucible is provided with heater block, and the heater block and motor are connected with the controller, the main shaft Inside there is the passage that leads to the power circuit of the heater block outside the working chamber.
- 2. vacuum melting furnace according to claim 1, it is characterised in that：The main shaft is provided with lip ring, described Lip ring is used to form sealing between the side wall of the main shaft and the working chamber.
- 3. vacuum melting furnace according to claim 2, it is characterised in that：The lip ring is located at the working chamber Outside.
- 4. vacuum melting furnace according to claim 1, it is characterised in that：The motor is passed by gearbox and the main shaft Dynamic connection；The gearbox has shift fork, the gear and the tooth on the motor that the shift fork is used to control in the gearbox Clutch between wheel；The main shaft is provided with handle.
- 5. vacuum melting furnace according to claim 4, it is characterised in that：The handle has counterweight.
- 6. vacuum melting furnace according to claim 1, it is characterised in that：Support, the support are provided with the working chamber For the heater block to be fixed on into the crucible, the main shaft is connected by the support with the crucible.
- 7. vacuum melting furnace according to claim 1, it is characterised in that：The heater block includes induction coil, described Induction coil is provided with water-cooling structure, and the power circuit includes at least two water-cooled coppers, and two water-cooled coppers are made respectively For the inlet pipeline and water return pipeline of the water-cooling structure.
- 8. vacuum melting furnace according to claim 1, it is characterised in that：The heater block is resistance.
- 9. vacuum melting furnace according to claim 1, it is characterised in that：The controller has remote control.
- 10. according to the vacuum melting furnace described in any one of claim 1 to 9, it is characterised in that：The main shaft and the crucible Middle and upper part connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720480929.8U CN206772000U (en) | 2017-05-03 | 2017-05-03 | Vacuum melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720480929.8U CN206772000U (en) | 2017-05-03 | 2017-05-03 | Vacuum melting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772000U true CN206772000U (en) | 2017-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720480929.8U Active CN206772000U (en) | 2017-05-03 | 2017-05-03 | Vacuum melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192263A (en) * | 2017-05-03 | 2017-09-22 | 深圳微纳增材技术有限公司 | Vacuum melting furnace |
-
2017
- 2017-05-03 CN CN201720480929.8U patent/CN206772000U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107192263A (en) * | 2017-05-03 | 2017-09-22 | 深圳微纳增材技术有限公司 | Vacuum melting furnace |
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