CN110220376A - A kind of Electric Arc smelting furnace - Google Patents
A kind of Electric Arc smelting furnace Download PDFInfo
- Publication number
- CN110220376A CN110220376A CN201910459821.4A CN201910459821A CN110220376A CN 110220376 A CN110220376 A CN 110220376A CN 201910459821 A CN201910459821 A CN 201910459821A CN 110220376 A CN110220376 A CN 110220376A
- Authority
- CN
- China
- Prior art keywords
- bellows
- electric arc
- metal
- smelting furnace
- ignition bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B14/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
- F27B2014/045—Vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
- F27B2014/0837—Cooling arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/13—Smelting
Abstract
The invention discloses a kind of Electric Arc smelting furnaces, the arc ignition bar in vacuum hearth is inserted into including vacuum hearth, its lower end, the lower end of arc ignition bar is fixedly installed with tungsten needle, and end is connected to power supply by electrode terminal thereon, vacuum hearth bottom is equipped with the cold-crucible of several metal baths, for placing metal melt, the bottom of cold-crucible is connected to power supply metal bath by electrode terminal；Wherein, Electric Arc smelting furnace further includes the metal bellows being set on arc ignition bar, and metal bellows lower end is mounted on the shell wall of vacuum hearth, and the upper end is connect by connector with arc ignition bar；Metal bellows further respectively has bellows lower limit frame and bellows upper limit frame；The present invention not only operates conveniently and then effectively reduces the complexity of electric arc melting operating process, while significantly reducing a possibility that tungsten needle is reacted with metal bath, greatly improves the stability and success rate of electric arc melting process.
Description
Technical field
The invention belongs to Metal Melting technical fields, and in particular to a kind of Electric Arc smelting furnace.
Background technique
Electric arc melting is the electrothermal metallurgy method using the electric arc generated between electrode and furnace charge come smelting metal.Usual feelings
Under condition, when power supply provides the electric energy of enough power, the gas of positive and negative two interpolar may proceed through stronger electric current, and issue
Strong radiance, to generate thousands of or even up to ten thousand degrees Celsius of height.When electric arc is sufficiently strong, additionally it is possible to molten in crucible
Body generates strong stirring action, is conducive to the full and uniform of material.Due to the above advantage, electric arc melting is matched in metal master alloy
Set, refractory alloy melting etc. is widely used, especially during new material research and exploitation, through frequently with
Electric arc melting technique prepares material.
In actual arc fusion process, the tungsten needle on arc ignition bar first have to furnace charge contact starting arc, when striking at
After function, tungsten needle must be detached from immediately with furnace charge and keep a reasonable height, just can ensure that arc stability exports.However at present
Electric Arc smelting furnace arc ignition bar caused by the country mostly uses the type of attachment of worm and gear or thread screw, when electric arc produces
After life, operator is difficult to rotate turbine in time or thread handle rises the position of arc ignition bar, and then is easy to cause striking
Together with bar is glutinous with furnace charge, striking failure is eventually led to.Even if operator rotates turbine or thread handle makes on arc ignition bar
It rises, it can not be kept a suitable distance with furnace charge, the too small tungsten needle of distance is easy and metal bath reaction, thus to material
Material pollutes, and distance is too big to be easy to cause electric arc interruption that melting is caused to fail again.
Summary of the invention
In view of this, not only being operated conveniently and then effective the purpose of the present invention is to provide a kind of Electric Arc smelting furnace
The complexity of electric arc melting operating process is reduced, while significantly reducing a possibility that tungsten needle is reacted with metal bath, pole
The earth improves the stability and success rate of electric arc melting process.
The technical solution adopted by the invention is as follows:
A kind of Electric Arc smelting furnace is inserted into the arc ignition bar in the vacuum hearth including vacuum hearth, its lower end,
The lower end of the arc ignition bar is fixedly installed with tungsten needle, and end is connected to power supply by electrode terminal thereon, the vacuum
Burner hearth bottom is equipped with the cold-crucible of several metal baths, and the metal bath is for placing metal melt, the cold-crucible
Bottom connected to power supply by electrode terminal；Wherein, the Electric Arc smelting furnace further includes being set in the arc ignition bar
On metal bellows, and the metal bellows lower end is mounted on the shell wall of the vacuum hearth, and the upper end passes through connection
Part is connect with the arc ignition bar；The metal bellows further respectively has bellows lower limit frame and bellows upper limit frame, institute
State bellows lower limit frame for vacuumize with lower limit when filling with inert gas, the bellows upper limit frame for striking and
Upper limit when melting.
Preferably, the metal bellows be equipped with can respectively with the bellows lower limit frame and the bellows upper limit
The limiting section that frame limit is cooperatively connected.
Preferably, the bellows upper limit frame and the bellows lower limit frame are separately mounted to the vacuum hearth
On shell wall.
Preferably, it is arranged with arc ignition bar handle at the top of the end of the arc ignition bar upper end, for compressing the metal bellows.
Preferably, the shell wall of the vacuum hearth is respectively provided with the vacuum interface vacuumized, and lazy for being filled with
The inflatable interface of property gas.
Preferably, the arc ignition bar and the cold-crucible are equipped with the cooling water access way with entrance and exit.
Preferably, the vacuum hearth uses Double water-cooled burner hearth.
Preferably, the bellows lower limit frame and bellows upper limit frame use rubber material or polytetrafluoroethylene material
It is made.
Preferably, the length of the tungsten needle is 30mm.
The present invention creatively proposes that worm and gear and nut-screw using metal bellows instead of routine techniques pass
Motivation structure eliminates the operation that electric arc bar is detached from metal charge manually, thus greatly improves the success rate of striking of the present invention；
Meanwhile the present invention defines the distance between tungsten needle and furnace charge using metal bellows position-limited rack, and fusion process has been effectively ensured
The stability of middle electric arc；Therefore, the present invention not only operates conveniently and then effectively reduces the complicated journey of electric arc melting operating process
Degree, while a possibility that tungsten needle is reacted with metal bath is significantly reduced, greatly improve the stability of electric arc melting process
And success rate.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of Electric Arc smelting furnace under the specific embodiment of the invention；
Attached drawing 2 is structural schematic diagram of the Electric Arc smelting furnace in striking under the specific embodiment of the invention.
Specific embodiment
The embodiment of the invention discloses a kind of Electric Arc smelting furnaces, including vacuum hearth, its lower end to be inserted into vacuum
Arc ignition bar in burner hearth, the lower end of arc ignition bar are fixedly installed with tungsten needle, and end is connected by electrode terminal and power supply thereon
It connects, vacuum hearth bottom is equipped with the cold-crucible of several metal baths, and metal bath is used to place metal melt, cold-crucible
Bottom is connected to power supply by electrode terminal；Wherein, Electric Arc smelting furnace further includes the metal wave being set on arc ignition bar
Line pipe, and metal bellows lower end is mounted on the shell wall of vacuum hearth, the upper end is connect by connector with arc ignition bar；Metal
Bellows further respectively has bellows lower limit frame and bellows upper limit frame, and bellows lower limit frame is for vacuumizing and filling lazy
Property gas when lower limit, bellows upper limit frame be used for striking and melting when upper limit.
The embodiment of the present invention creatively proposes the worm and gear and nut using metal bellows instead of routine techniques
Screw drive mechanism eliminates the operation that electric arc bar is detached from metal charge manually, thus greatly improves the embodiment of the present invention
The success rate of striking；Meanwhile the embodiment of the present invention defines the distance between tungsten needle and furnace charge using metal bellows position-limited rack,
The stability of electric arc in fusion process has been effectively ensured；Therefore, the embodiment of the present invention is not only operated conveniently and then is effectively reduced
The complexity of electric arc melting operating process, while a possibility that tungsten needle is reacted with metal bath is significantly reduced, greatly mention
The high stability and success rate of electric arc melting process.
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
A kind of Electric Arc smelting furnace shown in Figure 1, including vacuum hearth 1, its lower end are inserted into vacuum drying oven
Arc ignition bar 2 in thorax 1, the lower end of arc ignition bar 2 are fixedly installed with tungsten needle 3, and end passes through electrode terminal 6 and power supply thereon
Connection, 1 bottom of vacuum hearth are equipped with the cold-crucible of several metal baths 15, particularly preferably, in the present embodiment, use
Water jacketed copper crucible 4；Metal bath 15 passes through electrode terminal 6 and electricity for placing metal melt 18, the bottom of water jacketed copper crucible 4
Source connection；Wherein, Electric Arc smelting furnace further includes the metal bellows 8 being set on arc ignition bar 2, and under metal bellows 8
End is mounted on the shell wall of vacuum hearth 1 by bellows fixing bolt 9, and the upper end is connect by connector 10 with arc ignition bar 2,
Simultaneously using the fixed locking of connection bolt 12；Metal bellows 8 further respectively has bellows lower limit frame 13 and the bellows upper limit
Position frame 11, bellows lower limit frame 13 are vacuumizing and lower limit when filling with inert gas, ripple for Electric Arc smelting furnace
Pipe upper limit frame 11 is used for upper limit of the Electric Arc smelting furnace in striking and melting；
Preferably, in the present embodiment, metal bellows 8 be equipped with can respectively with bellows lower limit frame 13 and bellows
The limiting section 81 that the limit of upper limit frame 11 is cooperatively connected；
Preferably, in the present embodiment, bellows upper limit frame 11 and bellows lower limit frame 13 are separately mounted to very
On the shell wall of empty burner hearth 1, particularly preferably, when in use, bellows lower limit frame 13 can directly be disposed horizontally in vacuum drying oven
On the shell wall of thorax 1, bellows upper limit frame 11 is fixedly mounted on the shell wall of vacuum hearth 1 by position-limited rack fixing bolt 14；
Preferably, in the present embodiment, it is arranged with arc ignition bar handle 5 at the top of the end of 2 upper end of arc ignition bar, for compressing gold
Belong to bellows 8；
Preferably, in the present embodiment, the shell wall of vacuum hearth 1 is respectively provided with the vacuum interface 16 vacuumized,
And the inflatable interface 17 for being filled with inert gas, in the present embodiment, inert gas uses argon gas；
Preferably, in the present embodiment, arc ignition bar 2 and water jacketed copper crucible 4 are equipped with the cooling with entrance and exit
Water access way 7；
Preferably, in the present embodiment, vacuum hearth 1 uses Double water-cooled burner hearth；
Preferably, in the present embodiment, bellows lower limit frame 13 and bellows upper limit frame 11 use rubber material
Or polytetrafluoroethylene material is made；
Preferably, the length of tungsten needle 3 is 30mm.
The course of work of the present embodiment is explained further in conjunction with the present embodiment: preparing before use, installing bellows first
Lower limit frame 13 after reaching technological parameter requirement, passes through inflatable interface by vacuum interface 16 to vacuumizing in vacuum hearth 1
Recoil argon gas in 17 pairs of vacuum hearths 1, please be further shown in Figure 2 after reaching technological parameter requirement, removes bellows lower limit
Position frame 13, installs bellows upper limit frame 11, and be fixed in vacuum hearth by bellows upper limit frame fixing bolt,
Then start electric arc melting；In the case where powering on, pressure F is applied to corrugated connecting tube 8 by arc ignition bar handle 5, into
And compresses bellows connecting tube 8, so that arc ignition bar 2 and tungsten needle 3 be driven to go striking to metal melt 18 is close；Once striking success,
Argon gas between tungsten needle 3 and metal melt 18 is heated rapidly, and the pressure in vacuum hearth 1 is caused to rise sharply, and pushes wavy metal
Pipe 8 expands outward and drags tungsten needle 3 far from metal melt 18, and after reaching standard target distance, metal bellows 8 is by bellows
Upper limit frame 11 limits, so that being remained in the distance range of safety and stability between tungsten needle 3 and metal melt 18, to protect
Demonstrate,proving electric arc melting of the invention can be gone on smoothly with all-the-time stable.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of Electric Arc smelting furnace, which is characterized in that be inserted into the vacuum hearth including vacuum hearth, its lower end
Arc ignition bar, the lower end of the arc ignition bar is fixedly installed with tungsten needle, and end is connected to power supply by electrode terminal thereon,
The vacuum hearth bottom is equipped with the cold-crucible of several metal baths, and the metal bath is described for placing metal melt
The bottom of cold-crucible is connected to power supply by electrode terminal；Wherein, the Electric Arc smelting furnace further includes being set in institute
The metal bellows on arc ignition bar is stated, and the metal bellows lower end is mounted on the shell wall of the vacuum hearth, the upper end
It is connect by connector with the arc ignition bar；The metal bellows further respectively has bellows lower limit frame and the bellows upper limit
Position frame, the bellows lower limit frame are used for vacuumizing with lower limit when filling with inert gas, the bellows upper limit frame
Upper limit when striking and melting.
2. Electric Arc smelting furnace as described in claim 1, which is characterized in that the metal bellows be equipped with can respectively with institute
State the limiting section of bellows lower limit frame and bellows upper limit frame limit mating connection.
3. Electric Arc smelting furnace as described in claim 1, which is characterized in that the bellows upper limit frame and the ripple
Pipe lower limit frame is separately mounted on the shell wall of the vacuum hearth.
4. Electric Arc smelting furnace as described in claim 1, which is characterized in that be arranged at the top of the end of the arc ignition bar upper end
Arc ignition bar handle, for compressing the metal bellows.
5. Electric Arc smelting furnace as described in claim 1, which is characterized in that the shell wall of the vacuum hearth is respectively equipped with use
In the vacuum interface vacuumized, and the inflatable interface for being filled with inert gas.
6. Electric Arc smelting furnace as described in claim 1, which is characterized in that the arc ignition bar and the cold-crucible are all provided with
There is the cooling water access way with entrance and exit.
7. Electric Arc smelting furnace as described in claim 1, which is characterized in that the vacuum hearth uses Double-layer water black furnace
Thorax.
8. Electric Arc smelting furnace as described in claim 1, which is characterized in that on the bellows lower limit frame and bellows
Position-limited rack is made of rubber material or polytetrafluoroethylene material.
9. Electric Arc smelting furnace as described in claim 1, which is characterized in that the length of the tungsten needle is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459821.4A CN110220376B (en) | 2019-05-30 | 2019-05-30 | Small-sized electric arc melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910459821.4A CN110220376B (en) | 2019-05-30 | 2019-05-30 | Small-sized electric arc melting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110220376A true CN110220376A (en) | 2019-09-10 |
| CN110220376B CN110220376B (en) | 2021-04-23 |
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ID=67818801
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910459821.4A Active CN110220376B (en) | 2019-05-30 | 2019-05-30 | Small-sized electric arc melting furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN110220376B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094995A (en) * | 2020-08-11 | 2020-12-18 | 共慧冶金设备科技(苏州)有限公司 | Vacuum rapid heat treatment equipment for metal materials |
| CN117367112A (en) * | 2023-11-07 | 2024-01-09 | 北京研邦新材料科技有限公司 | Smelting device and method for hafnium-titanium-zirconium-niobium-tantalum refractory high-entropy alloy |
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| CN201632627U (en) * | 2009-12-14 | 2010-11-17 | 重庆理工大学 | Vacuum smelting furnace |
| CN102496922A (en) * | 2011-12-16 | 2012-06-13 | 荣信电力电子股份有限公司 | Sealed forcible trigger gap |
| CN203785421U (en) * | 2014-03-14 | 2014-08-20 | 沈阳慧宇真空技术有限公司 | Automatic feeding device for vacuum arc furnace |
| CN207501663U (en) * | 2017-11-29 | 2018-06-15 | 沈阳鹏程真空技术有限责任公司 | A kind of miniature arc-melting furnace of band casting function |
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2019
- 2019-05-30 CN CN201910459821.4A patent/CN110220376B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632627U (en) * | 2009-12-14 | 2010-11-17 | 重庆理工大学 | Vacuum smelting furnace |
| CN102496922A (en) * | 2011-12-16 | 2012-06-13 | 荣信电力电子股份有限公司 | Sealed forcible trigger gap |
| CN203785421U (en) * | 2014-03-14 | 2014-08-20 | 沈阳慧宇真空技术有限公司 | Automatic feeding device for vacuum arc furnace |
| CN207501663U (en) * | 2017-11-29 | 2018-06-15 | 沈阳鹏程真空技术有限责任公司 | A kind of miniature arc-melting furnace of band casting function |
Non-Patent Citations (1)
| Title |
|---|
| 徐克玷: "《钼的材料科学与工程》", 31 July 2014 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112094995A (en) * | 2020-08-11 | 2020-12-18 | 共慧冶金设备科技(苏州)有限公司 | Vacuum rapid heat treatment equipment for metal materials |
| CN112094995B (en) * | 2020-08-11 | 2022-08-09 | 共慧冶金设备科技(苏州)有限公司 | Vacuum rapid heat treatment equipment for metal materials |
| CN117367112A (en) * | 2023-11-07 | 2024-01-09 | 北京研邦新材料科技有限公司 | Smelting device and method for hafnium-titanium-zirconium-niobium-tantalum refractory high-entropy alloy |
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| Publication number | Publication date |
|---|---|
| CN110220376B (en) | 2021-04-23 |
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