CN107414066A - A kind of carbon-free ladle wall subsidizes technique - Google Patents
A kind of carbon-free ladle wall subsidizes technique Download PDFInfo
- Publication number
- CN107414066A CN107414066A CN201710844003.7A CN201710844003A CN107414066A CN 107414066 A CN107414066 A CN 107414066A CN 201710844003 A CN201710844003 A CN 201710844003A CN 107414066 A CN107414066 A CN 107414066A
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- China
- Prior art keywords
- ladle
- supplement
- wall
- containment wall
- subsidizes
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention proposes a kind of carbon-free ladle wall and subsidizes technique, subsidizes technique to solve the problems, such as that a kind of improper major accident, the carbon-free ladle walls such as generation red packet, bottom pour ladle of in turn resulting in of post processing is used for multiple times in ladle, comprises the following steps：Cooling, batch mixing, cleaning is levelling, subsidizes, conserves, toasting, and the present invention can directly solve that residual thickness is low existing for the ladle wall later stage by subsidizing the entirety of ladle wall, containment wall crack and spallation problems.Ladle subsidizes rear molten steel and acted directly on supplement brick, and former containment wall no longer contacts molten steel.The various potential safety hazards of script later stage ladle are effectively alleviated, and extend ladle service life, make various resistance to materials in ladle all obtain most sufficiently using, while having ensured the normal operation of ladle, increase economic efficiency again.
Description
Technical field
The present invention relates to refining ladle containment wall in iron and steel metallurgical industry to use a kind of repair technology technical field to the later stage,
Particularly relate to a kind of carbon-free ladle wall and subsidize technique.
Background technology
With the development of Ferrous Metallurgy technology, smelting molten steel condition more stringent, high is required to Molten Steel Cleanliness.
Therefore, carbon-free ladle is widely used.For carbon-free ladle wall domestic at present excellent using every performance early stage, molten steel is pure
Cleanliness height, containment wall overall leveling, erosion rate are relatively low.But with ladle offline cold repair repeatedly, containment wall is by repeatedly expanding with heat and contract with cold
Afterwards, containment wall after use the phase often it is cracking and peel off etc. abnormal conditions.Now ladle is in potential safety hazard, is continued
The possibility occurred using the accident that increases.
In the past ladle wall crack and the processing peeled off were confined to use steel ladle repair material.Material for repairing is relied at normal temperatures
Viscosity be bonded in containment wall.Online in use, material for repairing is integrated with containment wall sintering, play and mend a split and fill up spall
The effect in domain.However, material for repairing is partial smearing repairing, temperature is stepped up in baking process, material for repairing adhesion drop
It is low, directly contribute material for repairing and drop.It is raised that position is repaired in online use, by the bigger souring of molten steel.Material for repairing is past
Toward using it is preceding several times when just there is the phenomenon that drops.
The content of the invention
Carbon-free ladle wall subsidizes technique to be implemented during ladle later period maintenance, supplement and supplement brick material and carbon-free
Containment wall material is identical, online in use, producing bond strength by agglomeration.Due to being that entirety is subsidized, now containment wall is smooth
Smooth, molten steel active force is uniform, and supplement brick is not in the problem of dropping.In addition, subsidizing supplement thickness 15mm in technique, subsidize
Brick thickness 30mm, equivalent to increase containment wall thickness 45mm, by calculating containment wall erosion rate, containment wall can improve life-span 30 times with
On.
The technical proposal of the invention is realized in this way：
A kind of carbon-free ladle wall subsidizes technique, comprises the following steps：
1) cool down
Ladle after will be offline uses air blower quenching, starts to construct when containment wall temperature reaches 40 DEG C in ladle；
2) batch mixing
Containment wall supplement is in forced stirrer plus water is stirred to smearing state；
3) clear up levelling
Slag that the cleaning of ladle wall is remained containment wall using pneumatic pick, residual steel are destroyed, and clean containment wall dust, and use bag
Wall supplement will peel off position smearing at containment wall two smooth；
4) subsidize
Subsidize in technique, supplement brick is implemented to subsidize from bottom to top, and supplement is smeared and supplement brick is subsidized while carried out, and is subsidized
Brickwork joint gap≤2mm, and containment wall region is completely covered；
5) conserve
After subsidizing operation, ladle original place is static to place 8 hours；
6) toast
Ladle baking is toasted in strict accordance with steel roasting process is subsidized, and baking process to baking terminates, and supplement brick is not
There is the phenomenon that drops.
Preferably, containment wall supplement material is identical with carbon-free ladle wall material in step 3).
Preferably, in step 4) a height of 250mm*150mm*30mm of the wide * of long * of supplement brick brick cuboid.
Preferably, the specific method of step 4)：When pasting supplement brick, first containment wall is uniformly applied to using containment wall supplement
On, thickness 10-15mm, after supplement brick 250mm*150mm faces are pressed against on supplement, by adjusting supplement thickness, keep
Supplement brick is highly consistent, it is desirable to which supplement brick surrounding gap≤2mm, supplement brick stick whole containment wall region.
Preferably, baking process in step 6)：First small fire is toasted 8 hours, containment wall temperature≤150 DEG C；Then moderate heat 8 is small
When, containment wall temperature≤700 DEG C；Last big fire 8 hours, containment wall temperature >=1000 DEG C.
Beneficial effects of the present invention：
Patent of the present invention can be solved directly residual existing for the ladle wall later stage by subsidizing the entirety of ladle wall
Thick low, containment wall crack and spallation problems.Ladle subsidizes rear molten steel and acted directly on supplement brick, and former containment wall no longer contacts molten steel.
The various potential safety hazards of script later stage ladle are effectively alleviated, and extend ladle service life, make in ladle various resistance to materials all
Obtain most sufficiently using, while having ensured the normal operation of ladle, increase economic efficiency again, for any one later stage steel
Bag the technique can be used to carry out containment wall integrally to subsidize, it is not necessary to locally residual thickness is low for containment wall, crack and spallation problems one by one
Solve, carbon-free ladle wall subsidizes technique, containment wall whole implementation subsidized at normal temperatures, supplement is adhered to containment wall and supplement brick
It is middle so that three forms one, and maintenance and baking process are not in that supplement brick drops situation.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
280 tons of B steel mills carbon-free ladle original access times 120 times or so, when the ladle later stage reaches 100 times or so, containment wall
The local residual thickness of appearance is low, and containment wall cracks and flakes off situation.The residual thick lower curtate position of containment wall is thickened using material for repairing and position is peeled off in repairing
Ineffective, ladle is offline after material for repairing drops.The measurement residual thick 120mm of residue pile after offline, wraps the residual thick 280mm in bottom, under doing sth. in advance
The waste that line causes the resistance to material of slag line and bag bottom uses.
A kind of carbon-free ladle wall subsidizes technique, applied in 280 tons of carbon-free ladle later stage repairing works of B steel mills.Steel
Occurs the residual thick 90mm in the face of falling steel when bag uses 110 times, small area is peeled off at containment wall two.The now residual thick 140mm of residue pile, bag bottom are residual
Thick 300mm, plan subsidize technique by containment wall and improve bag age to 140 times.
A kind of carbon-free ladle wall subsidizes technique, comprises the following steps：
1) cool down
Ladle after will be offline uses air blower quenching, starts to construct when containment wall temperature reaches 40 DEG C in ladle；
2) batch mixing
Containment wall supplement is in forced stirrer plus water is stirred to smearing state, you can the state that plasticity is good, viscosity is high；From
Water addition 9.2%.By subsidizing experiment, supplement meets requirement；
3) clear up levelling
Slag that the cleaning of ladle wall is remained containment wall using pneumatic pick, residual steel are destroyed, and clean containment wall dust, and use bag
Wall supplement will peel off position smearing at containment wall two smooth；Containment wall supplement material is identical with carbon-free ladle wall material；
4) subsidize
Subsidize in technique, supplement brick is implemented to subsidize from bottom to top, and supplement is smeared and supplement brick is subsidized while carried out, and is subsidized
Brickwork joint gap≤2mm, and containment wall region is completely covered；The a height of 250mm*150mm*30mm's of the wide * of long * of supplement brick brick is rectangular
Body, subsidize operation and use 0.8 ton of supplement, 680 pieces of supplement brick altogether；When pasting supplement brick, first uniformly applied using containment wall supplement
Be put in containment wall, thickness 10-15mm, after supplement brick 250mm*150mm faces are pressed against on supplement, by adjust supplement thickness
Degree, keep supplement brick highly consistent, it is desirable to which supplement brick surrounding gap≤2mm, supplement brick stick whole containment wall region；
5) conserve
After subsidizing operation, ladle original place is static to place 8 hours；
6) toast
Ladle baking is toasted in strict accordance with steel roasting process is subsidized, and baking process to baking terminates, and supplement brick is not
There is the phenomenon that drops.Baking process：First small fire is toasted 8 hours, containment wall temperature≤150 DEG C；Then moderate heat 8 hours, containment wall temperature
≤700℃；Last big fire 8 hours, containment wall temperature >=1000 DEG C.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (5)
1. a kind of carbon-free ladle wall subsidizes technique, it is characterised in that comprises the following steps：
1) cool down
Ladle after will be offline uses air blower quenching, starts to construct when containment wall temperature reaches 40 DEG C in ladle；
2) batch mixing
Containment wall supplement is in forced stirrer plus water is stirred to smearing state；
3) clear up levelling
Slag that the cleaning of ladle wall is remained containment wall using pneumatic pick, residual steel are destroyed, and clean containment wall dust, and paste using containment wall
Feed supplement will peel off position smearing at containment wall two smooth；
4) subsidize
Subsidize in technique, supplement brick is implemented to subsidize from bottom to top, and supplement is smeared and supplement brick is subsidized while carried out, and subsidizes brickwork joint
Gap≤2mm, and containment wall region is completely covered；
5) conserve
After subsidizing operation, ladle original place is static to place 8 hours；
6) toast
Ladle baking is toasted in strict accordance with steel roasting process is subsidized, and baking process to baking terminates, and supplement brick does not occur
Drop phenomenon.
2. a kind of carbon-free ladle wall as claimed in claim 1 subsidizes technique, it is characterised in that：
Containment wall supplement material is identical with carbon-free ladle wall material in step 3).
3. a kind of carbon-free ladle wall as claimed in claim 1 subsidizes technique, it is characterised in that：
The a height of 250mm*150mm*30mm of the wide * of long * of supplement brick brick cuboid in step 4).
4. a kind of carbon-free ladle wall as claimed in claim 1 subsidizes technique, it is characterised in that：
The specific method of step 4)：When pasting supplement brick, first uniformly it is applied to using containment wall supplement in containment wall, thickness 10-
15mm, after supplement brick 250mm*150mm faces are pressed against on supplement, by adjusting supplement thickness, keep supplement brick height
Unanimously, it is desirable to which supplement brick surrounding gap≤2mm, supplement brick stick whole containment wall region.
5. a kind of carbon-free ladle wall as claimed in claim 1 subsidizes technique, it is characterised in that：
Baking process in step 6)：First small fire is toasted 8 hours, containment wall temperature≤150 DEG C；Then moderate heat 8 hours, containment wall temperature≤
700℃；Last big fire 8 hours, containment wall temperature >=1000 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844003.7A CN107414066A (en) | 2017-09-18 | 2017-09-18 | A kind of carbon-free ladle wall subsidizes technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710844003.7A CN107414066A (en) | 2017-09-18 | 2017-09-18 | A kind of carbon-free ladle wall subsidizes technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107414066A true CN107414066A (en) | 2017-12-01 |
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| CN201710844003.7A Pending CN107414066A (en) | 2017-09-18 | 2017-09-18 | A kind of carbon-free ladle wall subsidizes technique |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310568A (en) * | 2001-04-11 | 2002-10-23 | Shinagawa Refract Co Ltd | Method for repairing refractory wall for molten metal container |
| CN101380674A (en) * | 2008-10-06 | 2009-03-11 | 中冶宝钢技术服务有限公司 | Ladle wall permanent layer repairing method |
| CN101985173A (en) * | 2010-07-20 | 2011-03-16 | 郑州振东耐磨材料有限公司 | Steel ladle lining covering method |
| CN106312035A (en) * | 2016-09-30 | 2017-01-11 | 北京利尔高温材料股份有限公司 | Repair mode for circumferential weld in ladle slag line part |
| CN106424692A (en) * | 2016-10-26 | 2017-02-22 | 舞阳钢铁有限责任公司 | Constructing and repairing method for minor repair or mend of steel ladle of electric furnace |
-
2017
- 2017-09-18 CN CN201710844003.7A patent/CN107414066A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002310568A (en) * | 2001-04-11 | 2002-10-23 | Shinagawa Refract Co Ltd | Method for repairing refractory wall for molten metal container |
| CN101380674A (en) * | 2008-10-06 | 2009-03-11 | 中冶宝钢技术服务有限公司 | Ladle wall permanent layer repairing method |
| CN101985173A (en) * | 2010-07-20 | 2011-03-16 | 郑州振东耐磨材料有限公司 | Steel ladle lining covering method |
| CN106312035A (en) * | 2016-09-30 | 2017-01-11 | 北京利尔高温材料股份有限公司 | Repair mode for circumferential weld in ladle slag line part |
| CN106424692A (en) * | 2016-10-26 | 2017-02-22 | 舞阳钢铁有限责任公司 | Constructing and repairing method for minor repair or mend of steel ladle of electric furnace |
Non-Patent Citations (1)
| Title |
|---|
| 干勇等: "《现代连续铸钢实用手册》", 31 March 2010, 冶金工业出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20171201 |