CN101791693A - Tundish with quick-replaceable inclusion removing device and operation method thereof - Google Patents
Tundish with quick-replaceable inclusion removing device and operation method thereof Download PDFInfo
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- CN101791693A CN101791693A CN 201010134834 CN201010134834A CN101791693A CN 101791693 A CN101791693 A CN 101791693A CN 201010134834 CN201010134834 CN 201010134834 CN 201010134834 A CN201010134834 A CN 201010134834A CN 101791693 A CN101791693 A CN 101791693A
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- tundish
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- clamper
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Abstract
The invention relates to a tundish with a quick-replaceable inclusion removing device and an operation method thereof, belonging to the technical field of iron and steel smelting. The tundish with the quick-replaceable inclusion removing device comprises a tundish body, a thermal insulation cover, a filter, a water supply inlet and a water drainage outlet, wherein the thermal insulation cover is arranged on the upper part of the tundish body; the water supply inlet is arranged above the tundish body; the water drainage outlet is arranged at the bottom of the tundish body; and the filter is arranged on the thermal insulation cover under the water supply inlet. The tundish is characterized by comprising a quick-replaceable device which consists of a rotary lifting rod and a gripper, wherein the handle end of the gripper is fixed on the rotary lifting rod. The invention can quickly replace the filter, save the time for filter replacement and improve the removal rate of impurities.
Description
Technical field
The present invention relates to a kind of tundish and method of work thereof that has the quick-replaceable inclusion removal device, belong to the smelting iron and steel technical field.
Background technology
Field trash is present in the steel mutually as independent, has destroyed the continuity of steel matrix, has strengthened the inhomogeneities of organizing in the steel, has had a strong impact on the various performances of steel, and simultaneously, steel inclusion also causes continuous casting billet and stocking defective easily, causes waste product.Therefore, removing field trash, improving the molten steel cleanliness factor is an important goal of modern technical field of smelting, at present, the method for removing field trash in the tundish that generally adopts of metallurgical boundary mainly contains filter filtration, tundish air curtain barricade wall, electromagnetic agitation centrifugal flow etc.These methods all have the characteristics of removing field trash separately, but their common shortcomings all are effectively to remove field trash under high casting speed.
As notification number is that the Chinese patent of CN201186337 has been announced a kind of tundish air curtain barricade wall and had the tundish of this air curtain barricade wall.A kind of air curtain barricade wall comprises ventilative body and is arranged at the boss that described ventilative body bottom is used to install and fix described ventilative body, forms air chamber in the described ventilative body and makes the tracheae of described air chamber and extraneous UNICOM.A kind of tundish with described air curtain barricade wall, comprise the tundish inclusion that constitutes by permanent layer and the working lining that is arranged at the permanent layer inner surface, be provided with air curtain barricade wall in the described inclusion, the ventilative body of described air curtain barricade wall is arranged in the permanent layer of described inclusion by boss.Publication number is the Chinese patent of CN2813158, discloses a kind of tundish filter, is installed on the slag weir in the tundish; Filtration members, solid matter are fixed on the substrate; It is isometrical along row, isometrical stagger arrangement, not isometrical along row or not isometrical stagger arrangement that filtration members is, its sheet or column structure, and cross sectional shape is rounded, semicircle, arcs of recesses.Molten steel is divided into many more tiny steel streams during by Filter column, boundary near pillar has formed Laminar Flow, flow velocity slowed down when field trash entered this wake boundary, because speed difference is bigger, be attracted to damaged surface, grow up gradually along with the increase of adsorbance, the large-scale inclusion particle after growing up is washed out by steel stream and floats and is capped agent and absorbs; Molten steel easily on the plane or concave surface form to reflux, refluxing promotes that field trash separates with molten steel, field trash is gathered in concave surface or plane, along with the increase of adsorbance is grown up gradually, large-scale inclusion particle is swept away by the molten steel reflow stream, floats to be capped agent and to absorb.But this filter poor filtration effect is changed trouble.
Along with the development and the application of new material technology, ceramic filter is applied in the molten steel filtration gradually, is the Chinese patent of CN1138507 as publication number, discloses the tundish that a kind of bottom has filter.The one demountable ceramic filter spare that roughly covers the whole horizontal cross-section of tundish is housed in this tundish, this filtration members roughly stretches in the horizontal direction, the sieve aperture of the direction approximate vertical identical with the flow direction of the deposite metal of flowing through tundish is arranged on it, thereby a kind of deposite metal filtration equipment for clarifying is provided.Publication number is the Chinese patent of CN101161376, discloses a kind of continuous casting tundish, belongs to field of metallurgy.Characteristics are: be made up of tundish molten bath, filling pipe end, stopper, be set with a slice ceramic filter at least on the stopper.The present invention is set on the tundish stopper owing to annular porous ceramic filter is stacked, seal with fire clay between the porous ceramics piece during suit, molten steel this annular porous ceramic filter of before entering the mouth of a river, will flowing through earlier like this, thus played the filtration molten steel, the effect of dross inclusion adsorption.Notification number is that the Chinese patent of CN201077859 relates to a kind of online degassing and filtration mechanism, comprise tundish, ceramic filter plate, tundish gland, rotation getter, control cabinet, graphite rotator, it is characterized in that: tundish is made of for three layers casting lining, refractory material insulating interlayer and shell, in tundish, be provided with a refractory material partition wall, the tundish gland covers at the tundish top, top in the tundish both sides is provided with entrance and exit, and ceramic filter plate is located in the tundish outlet of tundish is all blocked; Be provided with seal box outside the housing of rotation getter, establish gas flowmeter on the seal box, the air inlet of flowmeter is located in the seal box, and the gas outlet is connected with the rotation getter; Graphite rotator is connected with the rotation getter, has opening on the gland of tundish.Its advantage is: realized the purification of aluminum melt before the aluminum melt casting, make the hydrogen content of 100g aluminum melt reach 0.1ml (1 grade of pinhole rate grade), the dehydrogenation rate is about 50%, and the filter cleaner effect is obvious, and the few and aluminum melt composition of alloying element scaling loss evenly reaches temperature stabilization.Said apparatus adopts ceramic filter, can increase filter effect, but because pottery is frangible, as untimely replacing, can cause filter effect to descend, but the filter replacing time is long, replacing process complexity, frequent replacing not only can have a strong impact on the production time, and need expend a large amount of manpowers, has had a strong impact on the application of ceramic filter in molten steel filters.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of tundish and method of work thereof that has the quick-replaceable inclusion removal device is provided.
The tundish that has the quick-replaceable inclusion removal device, comprise tundish inclusion, insulation cover, filter, filling pipe end and the following mouth of a river, insulation cover is arranged at the top of tundish inclusion, filling pipe end is arranged at the top of tundish inclusion, the following mouth of a river is arranged at the bottom of tundish inclusion, filter is arranged on the insulation cover under the filling pipe end, it is characterized in that, also comprise fast replacing device, described fast replacing device is made up of rotation and lifting bar and clamper, and the pommel of clamper is fixed on the rotation and lifting bar.
Described rotation and lifting bar is provided with 2-4 clamper, and this clamper is driven the opening and closing of clamping limb by the hydraulic stem device.
Described rotation and lifting bar is made up of pallet, gear-box, a motor and 1-4 hydraulic pressure lifting device, pallet is connected to form by the rotation and lifting axle by top tray and following pallet, hydraulic pressure lifting device is arranged at down the tray bottom, the top tray upper surface is provided with teeth groove, gear in the gear-box and teeth groove engagement, motor links to each other with gear-box by motor shaft, and the pommel of clamper is fixed on the top tray.The rotation and lifting bar is by the lifting of lifting hydraulic pressure lifting device realization clamper, and the horizontal position adjustment of clamper can be adjusted the top tray position by the rotation driven gear case of motor, and then the position of the clamper on the control top tray.
Be 90 ° of angles between described adjacent two clampers.
Bottom, inclusion place between the described tundish upper nozzle and the following mouth of a river also is provided with air curtain generator.This air curtain generator is more conducive to the come-up of foreign material than traditional barricade, retaining dam.
Described air curtain generator is 1～3.This air curtain generator number needs according to how many settings of mouth of a river quantity, molten steel actual temp and impurity down.
Described filter metal strengthening support ring bottom is provided with weight tester.In casting process, need sometimes to check that filtration members flows through the permeability of filtration members at the thawing metal, so that determine in ensuing casting process, whether to need to change filtration members.Can not effectively offset the influence of filter resistance when the influence factor of gravity, cause permeability reduction, liquid level to raise, must cause the increase of filter weight, when weight is increased to a certain degree, weight tester is passed to control device with signal, carries out filter and changes.
Described filter is a ceramic filter, and the filter edge is provided with filter metal strengthening support ring.
Filter opening aperture≤1mm on the described filter.Filter can improve the rate of filtration by increasing the contact area of filter and molten steel on the one hand, realizes high-speed casting.Intervention by filter improves that the nowed forming of molten steel in tundish promotes inclusion floating and then separates the realization purification of molten steel with molten steel on the other hand.This pore diameter range can reach the optimum efficiency that above-mentioned two aspects require.
Have the method for work of the tundish of quick-replaceable inclusion removal device, step is as follows:
1. untapped filter is positioned in the clamper clamping range, and clamper starts, and clamps untapped filter;
2. the hydraulic pressure lifting device of rotation and lifting bar is controlled the clamper rising that links to each other with pallet;
3. tundish quits work, and tundish upper nozzle breaks away from tundish;
4. directly over the filter that the electric motor starting of rotation and lifting bar, the rotation of control pallet are positioned at another clamper will to change;
5. the hydraulic pressure lifting device of rotation and lifting bar is controlled the clamper decline that links to each other with pallet, makes the filter bits that will change in the clamping range of another clamper;
6. another clamper starts, the filter that clamping will be changed;
7. the hydraulic pressure lifting device of rotation and lifting bar control pallet rises, the electric motor starting control pallet rotation of rotation and lifting bar, and the untapped filter bits that makes the clamper clamping is directly over the filter operating position;
8. the hydraulic pressure lifting device of rotation and lifting bar control pallet descends, and makes untapped filter bits in the operating position, closes clamper, and clamper opens, and untapped filter separates with clamper;
9. the electric motor starting control pallet of the hydraulic pressure lifting device of rotation and lifting bar control pallet rising, rotation and lifting bar rotates to initial operating position;
10. tundish upper nozzle return, tundish is started working;
11. the hydraulic pressure lifting device of rotation and lifting bar control pallet drops to original position;
12. another clamper cuts out, another clamper separates with the filter that will change, and the filter that change is fallen in the filter returnable.
The present invention has following advantage:
1, fast changeable filter of the present invention remains filter and filters unobstructed state in the use of reality.
2, in tundish, place the ceramic filter spare that to replace fast and contact with molten steel large tracts of land in the tundish, in fully removal of contamination or slag, the molten steel in the tundish flowed and produce favourable influence, liquid flow is weakened more help the impurity come-up, and prior art must take long time and fully removes the field trash in the deposite metal in the tundish.
3, since employed ceramic material density far below molten steel, when ceramic filter spare is unexpected broken, fragment can be in molten steel floating upward quickly, can effectively avoid secondary pollution than prior art, improve the tundish functional reliability.
4, the present invention is when changing filter, the filter clamping that clamper will need to change goes out tundish, the rotation and lifting bar moves into untapped filter synchronously, the rhythm deviation can not take place, thereby can guarantee easy, change filter accurately, rapidly, shorten the time of changing filtration members and interrupting tundish work.
5, the effective time of tundish of the present invention was compared with the effective time of cheap filtration members, significantly improved resource utilization, saved production cost.Particularly when filter of the present invention and quick replacement device thereof were used to cast continuously, prior art need be clean floating impurity and slag removal.And the present invention, because floating impurity and slag be mainly in the tundish filter interior, thereby the action of changing filter is equal to the work of having carried out floating impurity of a part of removing and slag simultaneously, reduced the burden of follow-up removal of impurities work.
6, whether the present invention can come auxiliary detection to need to change by the permeability of filter, when the influence factor of molten steel gravity can not effectively be offset influencing of filter resistance, molten steel amount in the filter increases, when arriving constant weight, weight tester is passed to control device with signal, changes filter, can reduce the testing staff, help reducing cost, improve safety coefficient.
7, the generator of setting of the present invention more helps the secondary come-up of remaining field trash.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of rotation and lifting bar among the present invention.
Fig. 3 is clamper structural representation among the present invention.
Wherein: 1, filling pipe end, 2, filter, 3, filter metal strengthening support ring, 4, tundish inclusion, 5, fast replacing device, 6, insulation cover, 7, air curtain generator, 8, weight tester, 9, hydraulic pressure lifting device, 10, rotation and lifting axle, 11, motor, 12, gear-box, 13, pallet, 14, clamper, 15, clamper.
Specific embodiments
The present invention will be further described below in conjunction with drawings and Examples, but be not limited thereto.
Embodiment 1
As Fig. 1, Fig. 2, the described tundish that has the quick-replaceable inclusion removal device of Fig. 3, comprise tundish inclusion 4, insulation cover 6, filter 2, the filling pipe end 1 and the following mouth of a river, insulation cover is arranged at the top of tundish inclusion 4, filling pipe end 1 is arranged at the top of tundish inclusion 4, the following mouth of a river is arranged at the bottom of tundish inclusion 4, filter 2 is arranged on the insulation cover 6 under the filling pipe end 1, this tundish also comprises fast replacing device 5, described fast replacing device 5 is by rotation and lifting bar and clamper 14, clamper 15 is formed, the pommel of clamper 15 is fixed on the rotation and lifting bar, and clamper 15 is driven the opening and closing of clamping limb by the hydraulic stem device.The rotation and lifting bar is made up of 2 hydraulic pressure lifting devices 9, pallet 13, gear-box 12 and motor 11, pallet 13 is connected to form by rotation and lifting axle 10 by top tray and following pallet, hydraulic pressure lifting device 9 is arranged at down the tray bottom, the top tray upper surface is provided with teeth groove, gear in the gear-box 12 and teeth groove engagement, motor 11 links to each other with gear-box by motor shaft, and the pommel of clamper is fixed on the top tray.Bottom, tundish inclusion 4 places between the described tundish upper nozzle 1 and the following mouth of a river also is provided with air curtain generator 7.Described filter 2 is the ceramic filter of filter opening aperture 1mm, and filter 2 edges are provided with filter metal strengthening support ring 3.Described filter metal strengthening support ring 3 bottoms are provided with weight tester 8.
The method of above-mentioned tundish ceramic filter and quick replacement device thereof, step is as follows:
1. untapped filter is positioned in the clamper clamping range, and clamper starts, and clamps untapped filter;
2. the hydraulic pressure lifting device of rotation and lifting bar is controlled the clamper rising that links to each other with pallet;
3. tundish quits work, and tundish upper nozzle breaks away from tundish;
4. directly over the filter that the electric motor starting of rotation and lifting bar, the rotation of control pallet are positioned at another clamper will to change;
5. the hydraulic pressure lifting device of rotation and lifting bar is controlled the clamper decline that links to each other with pallet, makes the filter bits that will change in the clamping range of another clamper;
6. another clamper starts, the filter that clamping will be changed;
7. the hydraulic pressure lifting device of rotation and lifting bar control pallet rises, the electric motor starting control pallet rotation of rotation and lifting bar, and the untapped filter bits that makes the clamper clamping is directly over the filter operating position;
8. the hydraulic pressure lifting device of rotation and lifting bar control pallet descends, and makes untapped filter bits in the operating position, closes clamper, and clamper opens, and untapped filter separates with clamper;
9. the electric motor starting control pallet of the hydraulic pressure lifting device of rotation and lifting bar control pallet rising, rotation and lifting bar rotates to initial operating position;
10. tundish upper nozzle return, tundish is started working;
11. the hydraulic pressure lifting device of rotation and lifting bar control pallet drops to original position;
12. another clamper cuts out, another clamper separates with the filter that will change, and the filter that change is fallen in the filter returnable.
Use detection through test, average each filter elapsed time 3 minutes of changing, removal of impurity is 72%～97%, result of the test shows, the more traditional purification method of the degree of purification of corrosion resisting steel steel billet improves 16%, size less than the distribution of the field trash of 6 μ m be improved significantly.
Embodiment 2
As the embodiment 1 described tundish that has the quick-replaceable inclusion removal device, difference is that hydraulic pressure lifting device is 4, and clamper is 4.
Use to detect through reality, average each to change filter speed be 2 minutes, and filter is changed the used time and further shortened.Removal of impurity is 72%～97%, and result of the test shows, the more traditional purification method of the degree of purification of corrosion resisting steel steel billet improves 16%, size less than the distribution of the field trash of 6 μ m be improved significantly.
Claims (10)
1. the tundish that has the quick-replaceable inclusion removal device, comprise tundish inclusion, insulation cover, filter, filling pipe end and the following mouth of a river, insulation cover is arranged at the top of tundish inclusion, filling pipe end is arranged at the top of tundish inclusion, the following mouth of a river is arranged at the bottom of tundish inclusion, filter is arranged on the insulation cover under the filling pipe end, it is characterized in that, also comprise fast replacing device, described fast replacing device is made up of rotation and lifting bar and clamper, and the pommel of clamper is fixed on the rotation and lifting bar.
2. tundish as claimed in claim 1 is characterized in that, described rotation and lifting bar is provided with 2-4 clamper, and this clamper is driven the opening and closing of clamping limb by the hydraulic stem device.
3. tundish as claimed in claim 1, it is characterized in that, described rotation and lifting bar is made up of pallet, gear-box, a motor and 1-4 hydraulic pressure lifting device, pallet is connected to form by the rotation and lifting axle by top tray and following pallet, hydraulic pressure lifting device is arranged at down the tray bottom, and the top tray upper surface is provided with teeth groove, gear in the gear-box and teeth groove engagement, motor links to each other with gear-box by motor shaft, and the pommel of clamper is fixed on the top tray.
4. tundish as claimed in claim 1 is characterized in that, is 90 ° of angles between described adjacent two clampers.
5. tundish as claimed in claim 1 is characterized in that, the bottom, inclusion place between the described tundish upper nozzle and the following mouth of a river also is provided with air curtain generator.
6. tundish as claimed in claim 5 is characterized in that, described air curtain generator is 1～3.
7. tundish as claimed in claim 1 is characterized in that, described filter is a ceramic filter, and the filter edge is provided with filter metal strengthening support ring.
8. tundish as claimed in claim 7 is characterized in that, filter metal strengthening support ring bottom is provided with weight tester.
9. tundish as claimed in claim 1 is characterized in that, the filter opening aperture≤1mm on the described filter.
10. method of work that has the tundish of quick-replaceable inclusion removal device as claimed in claim 1 is characterized in that step is as follows:
(1) untapped filter is positioned in the clamper clamping range, and clamper starts, and clamps untapped filter;
(2) hydraulic pressure lifting device of rotation and lifting bar is controlled the clamper rising that links to each other with pallet;
(3) tundish quits work, and tundish upper nozzle breaks away from tundish;
(4) directly over the filter that the electric motor starting of rotation and lifting bar, control pallet rotation are positioned at another clamper will to change;
(5) hydraulic pressure lifting device of rotation and lifting bar is controlled the clamper decline that links to each other with pallet, makes the filter bits that will change in the clamping range of another clamper;
(6) another clamper starts, the filter that clamping will be changed;
(7) hydraulic pressure lifting device of rotation and lifting bar control pallet rises, the electric motor starting control pallet rotation of rotation and lifting bar, and the untapped filter bits that makes the clamper clamping is directly over the filter operating position;
(8) hydraulic pressure lifting device of rotation and lifting bar control pallet descends, and makes untapped filter bits in the operating position, closes clamper, and clamper opens, and untapped filter separates with clamper;
The electric motor starting control pallet of (9) hydraulic pressure lifting device of rotation and lifting bar control pallet rising, rotation and lifting bar rotates to initial operating position;
(10) tundish upper nozzle return, tundish is started working;
(11) hydraulic pressure lifting device of rotation and lifting bar control pallet drops to original position;
(12) another clamper cuts out, and another clamper separates with the filter that will change, and the filter that change is fallen in the filter returnable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101348343A CN101791693B (en) | 2010-03-30 | 2010-03-30 | Tundish with quick-replaceable inclusion removing device and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101348343A CN101791693B (en) | 2010-03-30 | 2010-03-30 | Tundish with quick-replaceable inclusion removing device and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101791693A true CN101791693A (en) | 2010-08-04 |
| CN101791693B CN101791693B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101348343A Expired - Fee Related CN101791693B (en) | 2010-03-30 | 2010-03-30 | Tundish with quick-replaceable inclusion removing device and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195306A (en) * | 2020-09-30 | 2021-01-08 | 山东钢铁股份有限公司 | Filtering device and filtering method for removing impurities in rare earth molten steel |
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| JP2920036B2 (en) * | 1993-02-18 | 1999-07-19 | 品川白煉瓦株式会社 | Mounting device for tundish weir block |
| CN2444296Y (en) * | 2000-08-01 | 2001-08-22 | 珠海市江海电子股份有限公司 | Regenerator of compact disk |
| CN2499185Y (en) * | 2001-09-28 | 2002-07-10 | 中国第一汽车集团公司 | Multifunctional press quenching robot |
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| CN201644771U (en) * | 2010-03-30 | 2010-11-24 | 莱芜钢铁集团有限公司 | Tundish with removing device for rapidly replacing inclusion |
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2010
- 2010-03-30 CN CN2010101348343A patent/CN101791693B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2024362A (en) * | 1978-06-26 | 1980-01-09 | Worswick A | Apparatus for cleaning cores from castings |
| SU1581470A1 (en) * | 1985-07-16 | 1990-07-30 | Специальное Конструкторско-Технологическое Бюро По Землеройным Машинам Воронежского Производственного Объединения По Выпуску Тяжелых Экскаваторов Им.Коминтерна | Overhead manipulator for moulding boxes |
| JPH0195853A (en) * | 1987-10-08 | 1989-04-13 | Nkk Corp | Clamping device in molten metal vessel |
| CN2047203U (en) * | 1989-01-30 | 1989-11-08 | 河南省舞阳县泰山机械厂 | Aluminium saucepan bottom changing machine |
| JP2920036B2 (en) * | 1993-02-18 | 1999-07-19 | 品川白煉瓦株式会社 | Mounting device for tundish weir block |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195306A (en) * | 2020-09-30 | 2021-01-08 | 山东钢铁股份有限公司 | Filtering device and filtering method for removing impurities in rare earth molten steel |
| CN112195306B (en) * | 2020-09-30 | 2022-04-05 | 山东钢铁股份有限公司 | Filtering device and filtering method for removing impurities in rare earth molten steel |
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| CN101791693B (en) | 2011-08-03 |
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