CN104232917A - Vacuum electric slag furnace of double-station mobile crystallizer - Google Patents
Vacuum electric slag furnace of double-station mobile crystallizer Download PDFInfo
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- CN104232917A CN104232917A CN201410486647.XA CN201410486647A CN104232917A CN 104232917 A CN104232917 A CN 104232917A CN 201410486647 A CN201410486647 A CN 201410486647A CN 104232917 A CN104232917 A CN 104232917A
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Abstract
The invention belongs to the field of vacuum melting equipment, and in particular relates to a vacuum electric slag furnace of a double-station mobile crystallizer. The vacuum electric slag furnace comprises a first-station vacuum melting unit (23) and a second-station vacuum melting unit (24) which are of the same structure, wherein the first-station vacuum melting unit (23) comprises a lifting arm (1), a centering clamping head (2), a telescopic sealing pipe (3), a fake electrode (4), a melting electrode (5), an upper quick-detach butting flange (501) and a lower quick-detach butting flange (502); a lifting mechanism (28), the mobile crystallizer (6) and a tray (9) are arranged in a vacuum melting cavity (8); the mobile crystallizer (6) is fixedly arranged at the end part of a lifting supporting arm (29) in the lifting mechanism (28); the lifting supporting arm (29) can rotate around the center shaft (30); the tray (9) is arranged at the bottom of a center shaft (30). The vacuum electric slag furnace of the double-station mobile crystallizer is simple in structure, high in reliability, low in manufacturing cost, energy-saving and high in operating efficiency.
Description
Technical field
The invention belongs to vacuum smelting equipment field, particularly relate to a kind of double and move crystallizer vacuum electric slag hearth.
Background technology
Vacuum electroslag melting is the smelting technique of the special steel grown up in vacuum arc melting and gas shield electroslag melting basis.The equipment realizing vacuum electroslag smelting technique is called vacuum electric slag hearth.
In vacuum environment, gaseous tension is low, makes the physical process of smelting there occurs change, is conducive to deviating from gas.Under vacuum, the physical properties of material also can change, and boiling temperature reduces.Such as, water at ambient pressure boiling temperature is 100 DEG C, and only has 70 ~ 80 DEG C under vacuum, changes with the change of vacuum tightness.Metal is also the same, such as zinc 906 DEG C of boilings at ambient pressure, and only have under vacuum 800 more and spend and can seethe with excitement, lead at ambient pressure boiling point is 1740 DEG C, and in a vacuum 1000 DEG C can evaporate.In other words the boiling point lowering of metal under vacuum, is conducive to the vaporization of metal, evaporation and degassed.
Under vacuum, make the gas be originally mingled with in a metal release during melting of metal, leave molten metal very soon and taken away by vacuum pump.The originally compound that generates of metal and gas, the gas decomposing releasing in fusion process is taken away by vacuum pump very soon.
Vacuum electroslag melting is suitable for remelting and the refining of ingot metal after vacuum induction melting or general EAR melting.O in ingot metal after melting refining
2, N
2, H
2extremely low Deng gas content, the nonmetal inclusion such as sulphur, phosphorus is little, and the quality of metal product can improve a lot, and is suitable for the application of the high-end fields such as Aeronautics and Astronautics, navigation, military project, high ferro and nuclear industry.
Vacuum electroslag melting, except having the feature of general vacuum metallurgy, also has the feature of general EAR metallurgy, gas shield electroslag metallurgy.Slag in vacuum electroslag melting obtains vacuum-drying while Metal Melting, eliminates the water vapour in slag, adds the ventilation property of slag, the metal drop produced is obtained more degassed during melting.
Vacuum electroslag melting has following features.
1, the slag in vacuum electroslag melting obtains vacuum-drying while Metal Melting, eliminate the water vapour in slag, add the ventilation property of slag, the metal drop produced during melting is obtained more degassed, in vacuum environment, gaseous tension is low, make the physical process of smelting there occurs change, reduce metal boiling temperature, be conducive to the vaporization of metal, evaporation and degassed.
2, under vacuum environment, gas is thin, and metal can not be oxidized in melting process.
3, vacuum electroslag remelting, without waste water,waste gas and industrial residue, seldom pollute environment, metal recovery rate is high, and scaling loss is few, and the mechanical and physical performance of metal significantly improves, and can solve the insurmountable problem of general EAR melting.Achieve safety (comparing with general EAR), environmental protection, synergy, energy-conservation.
4, compared with vacuum arc melting, have more and not easily occur " white point ", metal quality is better.
At present, existing vacuum electric slag hearth ubiquity complex structure, poor reliability, and manufacturing cost is high, and energy consumption is large, the problems such as operation efficiency is low.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art part and provides a kind of structure simple, and good reliability, cheap for manufacturing cost, save energy, the double that operation efficiency is high moves crystallizer vacuum electric slag hearth.
For solving the problems of the technologies described above, the present invention realizes like this.
Double moves crystallizer vacuum electric slag hearth, and it comprises No. 2 station vacuum melting unit of No. 1 station vacuum melting unit and same structure; Described No. 1 station vacuum melting unit and No. 2 station vacuum melting unit comprise lifting arm, centering chuck, telescopic sealing pipe, dummy electrode, smelting electrode, quick-release docking upper flange and quick-release docking lower flange respectively; The top of described centering chuck and the end of lifting arm hinged; The upper end of described telescopic sealing pipe and the baffle plate sealing-in of centering chuck; Upper flange sealing-in is docked with quick-release in the lower end of described telescopic sealing pipe; The upper end of described dummy electrode and the clamping of centering chuck; Described smelting electrode welds with dummy electrode; Described quick-release docking lower flange connects with the top docking port that vacuum changes chamber; The top cross in described vacuum conversion chamber is provided with push-pull valve, and its bottom transverse is provided with lower plugboard valve; The bottom port in described vacuum conversion chamber connects with the upper shed in vacuum melting chamber; Hoisting appliance, mobile crystallizer and pallet is provided with in described vacuum melting chamber; Described mobile crystallizer is fixed at the end of lift supporting arm in hoisting appliance; Described lift supporting arm can rotate around central shaft; The bottom of described pallet centering axle.
As a kind of preferred version, centering chuck of the present invention comprises baffle plate, hanger, locking jacket, clamping body, taper drift, drift stage clip, tub and bearing pin; Described hanger is fixed at the top of baffle plate; The top of described clamping body is fixedly connected through suspension rod and baffle plate; Described locking jacket and suspension rod are socketed; Stage clip is provided with between described baffle plate and locking jacket; Described tub is fixedly placed on the outside of gripping sleeve body; Described bearing pin is laterally placed on tub; Described taper drift is positioned at the bottom of clamping body, and is placed in tub; The end of taper drift is coupling through bearing pin and tub; In tub, corresponding taper drift position has taper drift and stretches out window; Described drift stage clip is placed between clamping body and taper drift, makes taper drift form axial drift angle by the pressure of drift stage clip.
Further, the upper end of dummy electrode of the present invention and centering chuck joint portion are wedge structure.
Further, telescopic sealing pipe of the present invention can adopt bellows structure.
Further, telescopic sealing pipe of the present invention also can adopt welding diaphragm structure.
Compared with prior art, the present invention has following features.
1, adopt diaphragm corrugated tube telescopic cavity to replace original piston type vacuum chamber, become static seal by slippage sealing of elastoplastic in relative motion dust seal, ensure that the maintenance of high vacuum, improve the reliability of equipment, improve quality product.Simplify one-piece construction, reduce manufacturing cost.
2, adopt the vacuum with upper push-pull valve and lower plugboard valve formation to change the double structure of cavity configuration and mobile crystallizer, alternately melting, achieves the melting of many stoves, many gauge material.
3, conical surface automatic clamping chuck design, realizes Automatic-clamping, self-centering, and contact area is large, and conduction is good, decreases contact heating, decreases energy loss.
4, adopt lifting arm electrode suspended structure, realize self-centering, reduce tooling cost.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described.Protection scope of the present invention is not only confined to the statement of following content.
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the present invention's No. 1 station vacuum melting modular construction schematic diagram.
Fig. 3 is centering chuck structure schematic diagram of the present invention.
Fig. 4 is centering chuck tub part-structure schematic diagram of the present invention.
In figure: 1, lifting arm; 2, centering chuck; 3, telescopic sealing pipe; 4, dummy electrode; 5, smelting electrode; 501, quick-release docking upper flange; 502, quick-release docking lower flange; 6, fixing crystallizer; 7, baffle plate; 8, vacuum melting chamber; 9, pallet; 10, upper shed; 11, hanger; 12, locking jacket; 13, body is clamped; 1401, taper drift; 1402, taper drift; 1501, drift stage clip; 1502, drift stage clip; 1601, bearing pin; 1602, bearing pin; 17, suspension rod; 18, stage clip; 19, vacuum chamber adapter; 20, electroslag; 21, tub; 22, taper drift stretches out window; 23, No. 1 station vacuum melting unit; 24, No. 2 station vacuum melting unit; 25, vacuum conversion chamber; 26, upper push-pull valve; 27, lower plugboard valve; 28, hoisting appliance; 29, lift supporting arm; 30, central shaft; 31, melting electroslag.
Embodiment
As shown in the figure, double moves crystallizer vacuum electric slag hearth, and it comprises No. 2 station vacuum melting unit 24 of No. 1 station vacuum melting unit 23 and same structure; Described No. 1 station vacuum melting unit 23 and No. 2 station vacuum melting unit 24 comprise lifting arm 1, centering chuck 2, telescopic sealing pipe 3, dummy electrode 4, smelting electrode 5, quick-release docking upper flange 501 and quick-release docking lower flange 502 respectively; The top of described centering chuck 2 and the end of lifting arm 1 hinged; The upper end of described telescopic sealing pipe 3 and baffle plate 7 sealing-in of centering chuck 2; Upper flange 501 sealing-in is docked in the lower end of described telescopic sealing pipe 3 with quick-release; The upper end of described dummy electrode 4 and centering chuck 2 clamping; Described smelting electrode 5 is fixedly connected with dummy electrode 4; Described quick-release docking lower flange 502 connects with the top docking port that vacuum changes chamber 25; The top cross in described vacuum conversion chamber 25 is provided with push-pull valve 26, and its bottom transverse is provided with lower plugboard valve 27; The described vacuum conversion bottom port in chamber 25 connects with the upper shed 10 in vacuum melting chamber 8; Hoisting appliance 28, mobile crystallizer 6 and pallet 9 is provided with in described vacuum melting chamber 8; Described mobile crystallizer 6 is fixed at the end of lift supporting arm 29 in hoisting appliance 28; Described lift supporting arm 29 can rotate around central shaft 30; The bottom of described pallet 9 centering axle 30.
Centering chuck 2 of the present invention comprise baffle plate 7, hanger 11, locking jacket 12, clamping body 13, taper drift 1401,1402, drift stage clip 1501,1502, tub 21 and bearing pin 1601,1602; Described hanger 11 is fixed at the top of baffle plate 7; The top of described clamping body 13 is fixedly connected through suspension rod 17 and baffle plate 7; Described locking jacket 12 is socketed with suspension rod 17; Stage clip 18 is provided with between described baffle plate 7 and locking jacket 12; Described tub 21 is fixedly placed on the outside of gripping sleeve body 13; Described bearing pin 1601,1602 is laterally placed on tub 21; Described taper drift 1401,1402 is positioned at the bottom of clamping body 13, and is placed in tub 21; The end of taper drift 1401,1402 is coupling through bearing pin 1601,1602 and tub 21; In tub 21, corresponding taper drift 1401,1402 position has taper drift and stretches out window 22; Described drift stage clip 1501,1502 is placed between clamping body 13 and taper drift 1401,1402, makes taper drift 1401,1402 form axial drift angle by the pressure of drift stage clip 1501,1502.
Upper end and centering chuck 2 joint portion of dummy electrode 4 of the present invention are wedge structure.
Telescopic sealing pipe 3 of the present invention can adopt bellows structure.Certainly, need also can adopt welding diaphragm structure according to design.
When concrete operations, quick-release docking upper flange 501 and quick-release docking lower flange 502 are thrown off, lifting arm 1 is in extreme higher position (initial bit), welding diaphragm shrinks, taper drift 1401 in centering chuck 2 and taper drift 1402 open that (taper drift 1401 and taper drift 1402 stretch out window 22 to extrinsic deflection angle around bearing pin 1601 and bearing pin 1602 by taper drift respectively respectively under drift stage clip 1501 and drift stage clip 1502 act on, the end of dummy electrode is made to stretch into the clamping workspace of centering chuck 2), push-pull valve is in closing condition, crystallizer is made to be positioned at pallet place.
1, electroslag is added.
Open upper push-pull valve 26 and the lower plugboard valve 27 of No. 1 station, melting electroslag 31 is put on pallet 9.
2, top electrode.
With loading and unloading material lifting machinery (separately purchasing), will treat that the dummy electrode end of smelting electrode inserts in centering chuck 2, the welding diaphragm 3 that declines makes centering chuck 2 clamping electrode.Decline lifting arm 1 makes the lower end of smelting electrode apart from crystallizer to predetermined distance, and the welding diaphragm 3 that declines makes the elongation of diaphragm corrugated tube that quick-release plain flange upper and lower covers is aimed at, locking flange.
3, melting.
Start vacuum pump, make vacuometer reach prescribed value.Decline lifting arm 1 makes smelting electrode contact with electroslag place, switches on power, and electroslag generates heat, and starts deposite metal, by processing requirement uniform descent lifting arm 1, simultaneously by processing requirement rising lift supporting arm 29 and pallet.When lifting arm 1 drops to desired location, lift supporting arm 29 and pallet stop motion.
While No. 1 station melting, install the smelting electrode of No. 2 station with reference to step above, to connecting quick-release plain flange, starting another vacuum pump, making its vacuum tightness reach prescribed value.
4, from the melting of No. 1 Switch of working position to 2 station.
After No. 1 station completes, now, No. 2 station vacuum reaches prescribed value.Promote smelting electrode to setting height (making battery lead rod can extract the height of crystallizer out).Close push-pull valve and lower plugboard valve on No. 1 station, rotate mobile crystallizer and pallet, make mobile crystallizer and melted electrode go to No. 2 station.Open upper push-pull valve and the lower plugboard valve of No. 2 station, by processing requirement decline lifting arm, electrode is contacted with electroslag and start melting.When lift supporting arm 29 reaches desired location, lifting arm, lift supporting arm 29 and pallet stop mobile.
5, No. 1 station melting is switched to again from No. 2 station.
Can repeatedly above step, installing electrodes bar again melting to reaching requirement.
6, melting complete, feeding.
Stop vacuum pump, open vacuum deflation valve, when vacuum chamber is the same with outer surface pressure, open the quick-release plain flange of No. 1 station and No. 2 station, rise lifting arm 1 to starting position, clamp dummy electrode with loading and unloading material lifting machinery, rise diaphragm corrugated tube to desired location, chuck is thrown off automatically, takes off dummy electrode.Rising pallet, makes the bar after melting stretch out from crystallizer, clamps the bar after melting take out with loading and unloading material lifting machinery.
System of the present invention forms normal atmospheric electroslag furnace improvement and design, and it is to raising special alloy, and especially the quality of die steel, high-temperature alloy steel has very large meaning.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. double moves crystallizer vacuum electric slag hearth, it is characterized in that, comprises No. 2 station vacuum melting unit (24) of No. 1 station vacuum melting unit (23) and same structure; Described No. 1 station vacuum melting unit (23) and No. 2 station vacuum melting unit (24) comprise lifting arm (1), centering chuck (2), telescopic sealing pipe (3), dummy electrode (4), smelting electrode (5), quick-release docking upper flange (501) and quick-release docking lower flange (502) respectively; The top of described centering chuck (2) and the end of lifting arm (1) hinged; The upper end of described telescopic sealing pipe (3) and baffle plate (7) sealing-in of centering chuck (2); Upper flange (501) sealing-in is docked in the lower end of described telescopic sealing pipe (3) with quick-release; The upper end of described dummy electrode (4) and centering chuck (2) clamping; Described smelting electrode (5) welds with dummy electrode (4); Described quick-release docking lower flange (502) connects with the top docking port that vacuum changes chamber (25); The top cross of described vacuum conversion chamber (25) is provided with push-pull valve (26), and its bottom transverse is provided with lower plugboard valve (27); The bottom port of described vacuum conversion chamber (25) connects with the upper shed (10) of vacuum melting chamber (8); Hoisting appliance (28), mobile crystallizer (6) and pallet (9) is provided with in described vacuum melting chamber (8); Described mobile crystallizer (6) is fixed at the end of lift supporting arm (29) in hoisting appliance (28); Described lift supporting arm (29) can rotate around central shaft (30); The bottom of described pallet (9) centering axle (30).
2. double according to claim 1 moves crystallizer vacuum electric slag hearth, it is characterized in that: described centering chuck (2) comprises baffle plate (7), hanger (11), locking jacket (12), clamping body (13), taper drift (1401,1402), drift stage clip (1501,1502), tub (21) and bearing pin (1601,1602); Described hanger (11) is fixed at the top of baffle plate (7); The top of described clamping body (13) is fixedly connected through suspension rod (17) and baffle plate (7); Described locking jacket (12) and suspension rod (17) are socketed; Stage clip (18) is provided with between described baffle plate (7) and locking jacket (12); Described tub (21) is fixedly placed on the outside of gripping sleeve body (13); Described bearing pin (1601,1602) is laterally placed on tub (21); Described taper drift (1401,1402) is positioned at the bottom of clamping body (13), and is placed in tub (21); The end of taper drift (1401,1402) is coupling through bearing pin (1601,1602) and tub (21); Have taper drift in upper corresponding taper drift (1401, the 1402) position of tub (21) and stretch out window (22); Described drift stage clip (1501,1502) is placed between clamping body (13) and taper drift (1401,1402), makes taper drift (1401,1402) form axial drift angle by the pressure of drift stage clip (1501,1502).
3. double according to claim 2 moves crystallizer vacuum electric slag hearth, it is characterized in that: upper end and centering chuck (2) joint portion of described dummy electrode (4) are wedge structure.
4. double according to claim 3 moves crystallizer vacuum electric slag hearth, it is characterized in that: described telescopic sealing pipe (3) adopts bellows structure.
5. double according to claim 3 moves crystallizer vacuum electric slag hearth, it is characterized in that: described telescopic sealing pipe (3) adopts welding diaphragm structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486647.XA CN104232917B (en) | 2014-09-23 | 2014-09-23 | Double moves crystallizer vacuum electroslag furnace |
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|---|---|---|---|
| CN201410486647.XA CN104232917B (en) | 2014-09-23 | 2014-09-23 | Double moves crystallizer vacuum electroslag furnace |
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| CN104232917A true CN104232917A (en) | 2014-12-24 |
| CN104232917B CN104232917B (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006518A (en) * | 2019-12-02 | 2020-04-14 | 抚顺特殊钢股份有限公司 | Application of expansion type hydraulic and pneumatic linkage seal for pressure engineering |
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| JPH03197625A (en) * | 1989-12-25 | 1991-08-29 | Daido Steel Co Ltd | Control method for esr slag |
| CN101457297A (en) * | 2009-01-07 | 2009-06-17 | 朱兴发 | Double-station high efficiency electroslag furnace |
| CN101691634A (en) * | 2009-09-08 | 2010-04-07 | 沈阳华盛冶金技术与装备有限责任公司 | Protective atmosphere electro-slag continuous casting furnace |
| CN202212566U (en) * | 2011-09-09 | 2012-05-09 | 沈阳东大兴科冶金技术有限公司 | Double-workstation dynamic-seal vacuum electroslag melting equipment |
| CN102703723A (en) * | 2012-01-20 | 2012-10-03 | 苏州振吴电炉有限公司 | Double-tower constant-melting-rate protective atmosphere electro slag furnace available for three-station alternate smelting |
| CN204185541U (en) * | 2014-09-23 | 2015-03-04 | 苏原 | A kind of double moves crystallizer vacuum electric slag hearth |
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2014
- 2014-09-23 CN CN201410486647.XA patent/CN104232917B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03197625A (en) * | 1989-12-25 | 1991-08-29 | Daido Steel Co Ltd | Control method for esr slag |
| CN101457297A (en) * | 2009-01-07 | 2009-06-17 | 朱兴发 | Double-station high efficiency electroslag furnace |
| CN101691634A (en) * | 2009-09-08 | 2010-04-07 | 沈阳华盛冶金技术与装备有限责任公司 | Protective atmosphere electro-slag continuous casting furnace |
| CN202212566U (en) * | 2011-09-09 | 2012-05-09 | 沈阳东大兴科冶金技术有限公司 | Double-workstation dynamic-seal vacuum electroslag melting equipment |
| CN102703723A (en) * | 2012-01-20 | 2012-10-03 | 苏州振吴电炉有限公司 | Double-tower constant-melting-rate protective atmosphere electro slag furnace available for three-station alternate smelting |
| CN204185541U (en) * | 2014-09-23 | 2015-03-04 | 苏原 | A kind of double moves crystallizer vacuum electric slag hearth |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006518A (en) * | 2019-12-02 | 2020-04-14 | 抚顺特殊钢股份有限公司 | Application of expansion type hydraulic and pneumatic linkage seal for pressure engineering |
| CN111006518B (en) * | 2019-12-02 | 2021-08-24 | 抚顺特殊钢股份有限公司 | Application of expansion type hydraulic and pneumatic linkage seal for pressure engineering |
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| CN104232917B (en) | 2017-12-15 |
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