CN201205598Y - Air brick capable of drawing - Google Patents
Air brick capable of drawing Download PDFInfo
- Publication number
- CN201205598Y CN201205598Y CNU2008201182670U CN200820118267U CN201205598Y CN 201205598 Y CN201205598 Y CN 201205598Y CN U2008201182670 U CNU2008201182670 U CN U2008201182670U CN 200820118267 U CN200820118267 U CN 200820118267U CN 201205598 Y CN201205598 Y CN 201205598Y
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- air brick
- cover plate
- brick
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Abstract
The utility model relates to a ladle bottom blowing air brick in the ferrous metallurgy industry, in particular to a split type air brick which can be drawn out. The technical scheme of the air brick is as follows: (1) a metal air tube is extended into an air chamber of the air brick, one end of the metal air tube, which is close to a cover plate and the air chamber, is welded with a metal part, which can be welded with the cover plate, and thereby, the strength between the metal air tube and the cover plate can be enhanced when the metal air tube is drawn out; (2) when a refractory air brick core body material is shaped, a pit is reserved on one end close to the air chamber, the metal part and a metal connector are first embedded into the pit before a steel jacket is assembled, the metal connector is connected between an embedded metal part and the cover plate, the embedded metal part is then welded with the metal connector, which is welded with the cover plate, and when being drawn out, the residual air brick core gets help from the strength of the refractory air brick core body material through the embedded metal part and the meal connector. The utility model can effectively increase the probability that the split type air brick can be successfully drawn out.
Description
Affiliated technical field
The utility model relates to a kind of iron and steel metallurgical industry ladle bottom blowing air brick, particularly relate to a kind of can be by the split type air brick of drawing.
Background technology
Feed gas and stir in molten steel, quicken to realize metallurgical process, evenly liquid steel temperature and chemical analysis promote inclusion removal or control inclusion morphology, are the technology that modern steel metallurgy generally adopts.Being blown into gas in molten steel can obtain by dual mode, and a kind of is to adopt air blow gun, inserts the operation of blowing from the ladle top, a kind of is to adopt bottom-blown air brick, from ladle bottom gas is sent into, wherein the bottom-blown air brick mode is more cheap, convenient, practical, thereby is widely used.
Bottom-blown air brick is broadly divided into two kinds of structures, and a kind of is that air brick core and brick cup are prefabricated into an integral body, is integral air brick; A kind of to be air brick core and brick cup be two parts independently, during use the air brick core is combined in the brick cup, is the split air brick.The metal cover board that the air brick core generally includes brick core body refractory material, be welded on steel bushing around the described refractory material, weld together with steel bushing one end and one and the bridge welding metal tracheae that is connected together, the metal tracheae is connected with external air source, realizes gas is incorporated into the air brick core.Usually leave air chamber between metal cover board and the brick core body refractory material, seal with refractory wass between steel bushing and the brick core body refractory material.During air brick work, gas enters the air brick core from the metal tracheae, is blown in the molten steel through the air brick core again.
The split air brick adopts the outer formula of changing of outer dress, being characterized in can hot replacing air brick core, when airtight, excessive abnormal conditions such as deteriorate in use take place the air brick core, or when reaching service life, can be under the situation of not changing brick cup hot replacing air brick core, accelerated the ladle turnaround speed.Split air brick use cost is relatively low, and can guarantee the through-blowing rate of air brick, thereby is extensive use of by iron and steel enterprise.
During the air brick core that more renews, the remaining brick core that needs originally to use takes out from brick cup, usually can adopt following three kinds of methods to take out remaining air brick core: 1. use bale breaker, air brick is directly ejected from the ladle inboard, this method is at present domestic method relatively more commonly used, be characterized in convenient and swift, labor strength is low, and shortcoming is that steel mill must have bale breaker, the expense height, and the space hold position is big, and a lot of steel mills do not satisfy the requirements; 2. use a beche or long rod that air brick is up in wrapping, this substitute mode equipment investment is few, but complicated operating process, labor strength is big, and efficient is low, thereby seldom is used; 3. use mechanical pullers, the air brick core is pulled out in ladle, this method equipment is little, and expense is low and simple, and the position that takes up room is little, thereby used by some steel mills, but it can not guarantee that 100% brick core can be pulled out, in case remaining brick core can not pull out smoothly, then needs very big manpower dismounting brick core, and elapsed time is long, has lost the advantage of split air brick.Under the normal condition, it mainly is to be caused by two reasons that the air brick core can not be got off by drawing:
(1) ruptures between metal tracheae and the cover plate.Because by being welded together, the welding position is a weak link between metal tracheae and the cover plate, intensity is relatively low, under external force, be easy between metal tracheae and the cover plate produce fracture, cause the metal tracheae to be broken, and other parts be retained in the ladle.
(2) rupture between cover plate and the steel bushing.Because steel bushing itself is thinner, thickness is generally about 1mm, and under hot situation, the strength ratio of steel bushing itself is lower, and also is by being welded together between cover plate and the steel bushing, and the welding position is a weak link.In this case, metal tracheae and cover plate are pulled out, and brick core body refractory material and steel bushing etc. are retained in the ladle.
Summary of the invention
The utility model proposes a kind of air brick that is drawn into power that significantly improves, it has not only strengthened the intensity between metal tracheae and the cover plate, and by the strength of air brick core body refractory material.Its concrete technical scheme is:
(1) the metal tracheae is extended in the air chamber of air brick, in the end weld metal pieces of metal tracheae near cover plate, air chamber, metalwork is preferably steel part, metalwork can be connected together with bridge welding, when having increased the metal tracheae by drawing with this and the intensity between the cover plate.
(2) during moulding air brick core body refractory material, reserve pit at a end near air chamber, before the assembling steel bushing, in pit, be inlaid into earlier metalwork and metal connecting piece, metal connecting piece is connected between damascene part and the cover plate, with welding manner damascene part and metal connecting piece, metal connecting piece and bridge welding are connected together then, at last by general air brick core manufacturing process, around brick core body refractory material, damascene part, metal connecting piece, fill up refractory wass, the assembling steel bushing, steel bushing and bridge welding be connected together to get final product.
The pit that is used for the damascene part can be that irregularly shaped single diffusing shape distributes, and quantity is not limit, but is the best with the circle type pit of distance air chamber certain distance.Distance 20～150mm between pit and the air chamber is being good about 50mm.
The pit that is used for metal connecting piece is parallel to brick core length direction, and quantity is not limit, general 2～8.Stressed evenly for guaranteeing brick core refractory material, the pit that is used for metal connecting piece is preferably equally distributed.
Pit depth should not be too dark, and the general degree of depth is 5～15mm, for the slit-type air brick, is criterion not touch air flue.
Damascene part and metal connecting piece can be reinforcing bars, also can be steel plates, or other metalworks, and material is excellent with stainless steel.The diameter of damascene part and metal connecting piece or thickness are criterion with not outstanding pit.
The beneficial effects of the utility model are to have significantly improved the probability that split air brick core is successfully pulled out.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but not as to qualification of the present utility model.
Fig. 1 is the generalized section of common air brick core.
Fig. 2 is a kind of air brick core generalized section of the present utility model.
Fig. 3 is the three-dimensional assembling of a kind of air brick core body refractory material of the present utility model, damascene part, a metal connecting piece and cover plate schematic diagram.
Mark is expressed as among the figure: the pit that metalwork, 8-metal connecting piece, 9-damascene part, the 10-that 1-metal tracheae, 2-air chamber, 3-cover plate, 4-air brick core body refractory material, 5-refractory wass, 6-steel bushing, 7-and tracheae weld together reserves in air brick core body refractory material.
The specific embodiment
With reference to Fig. 1, the metal cover board 3 that common air brick core generally includes brick core body refractory material 4, be welded on steel bushing 6 around the described refractory material, weld together with steel bushing 6 one ends and one weld together metal tracheae 1 with cover plate 3, usually leave air chamber 2 between metal cover board 3 and the brick core body refractory material 4, seal with refractory wass 5 between steel bushing 6 and the brick core body refractory material 4.
With reference to Fig. 2, extend to the inboard of air chamber 2 at metal tracheae 1, and be welded with metalwork 7, there is not seam welding between metal tracheae 1 and the cover plate 3 simultaneously, increased the bond strength between metal tracheae 1 and the cover plate 3, metalwork 7 is good with steel part.
With reference to Fig. 2, Fig. 3, during moulding air brick core body refractory material 4, reserve pit 10 at a end near air chamber 2, before assembling steel bushing 6, in pit 10, be inlaid into earlier metalwork 9 and metal connecting piece 8, metal connecting piece 8 is connected between damascene part 9 and the cover plate 3, then with welding manner with damascene part 9 and metal connecting piece 8, metal connecting piece 8 welds together with cover plate 3, at last by general air brick core manufacturing process, at brick core body refractory material 4, damascene part 9, fill up refractory wass 5 around the metal connecting piece 8, assembling steel bushing 6 welds together steel bushing 6 and cover plate 3 and gets final product.
After the air brick core is finished using, earlier remove remaining steel, the slag that left behind on the air brick working face with oxygen lance, then with drawbench fasten metal tracheae 1 with the brick core from ladle bottom drawing outward.
With reference to Fig. 1, two weak links are arranged in drawing process: one is the weld between metal tracheae 1 and the cover plate 3, and metal tracheae 1 may cause cover plate 3 and brick core to be retained in the ladle together from this fracture; Another is that may rupture in this place under external force between steel bushing 6 and the metal cover board 3, cause metal tracheae 1 and cover plate 3 to be pulled out together, and air brick core body refractory material 4 and steel bushing 6 etc. is retained in the ladle.
With reference to Fig. 2, because the inboard of metal tracheae 1 is welded with metalwork 7, there is not seam welding between metal tracheae 1 and the cover plate 3 simultaneously, increase the bond strength between metal tracheae 1 and the cover plate 3, prevented to cause other positions of air brick core not pulled out because of the weld fracture between metal tracheae 1 and the cover plate 3.
With reference to Fig. 2, Fig. 3, damascene part 9 is connected with cover plate 3 by metal connecting piece 8, and damascene part 9 is embedded among the air brick core body refractory material 4, when drawbench outward during drawing metal tracheae 1, the stressed position of air brick core is the weld between steel bushing 6 and the cover plate 3 and inlays the air brick core body refractory material of position, its intensity sum is far longer than the intensity between steel bushing 6 and the cover plate 3, can guarantee that remaining air brick core can be pulled out in ladle.
The foregoing description of the present utility model only is for clearer explanation the utility model example, and is not the restriction to mode that the utility model is implemented.Technical staff for described field; can also make other multi-form changes on the basis of the above description; this paper can't also need not make exhaustive to all embodiments, and those belong to the change that spirit of the present utility model amplifies out and still are among the protection domain of the present utility model.
Claims (3)
1, a kind of drawable gas permeable brick is characterized in that it is welded with metalwork at an end of metal tracheae, is inlaid with damascene part and metal connecting piece in refractory material.
2, a kind of drawable gas permeable brick according to claim 1 is characterized in that it extends to the metal tracheae in the air chamber of air brick, is welded with metalwork at the metal tracheae near an end of cover plate, air chamber.
3, a kind of drawable gas permeable brick according to claim 1 is characterized in that being inlaid with damascene part and metal connecting piece at the air brick core near in the body refractory material of air chamber one end, and the damascene part links together by metal connecting piece and cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201182670U CN201205598Y (en) | 2008-05-29 | 2008-05-29 | Air brick capable of drawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201182670U CN201205598Y (en) | 2008-05-29 | 2008-05-29 | Air brick capable of drawing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201205598Y true CN201205598Y (en) | 2009-03-11 |
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ID=40464666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201182670U Expired - Fee Related CN201205598Y (en) | 2008-05-29 | 2008-05-29 | Air brick capable of drawing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201205598Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011015028A1 (en) * | 2009-08-03 | 2011-02-10 | 濮阳濮耐高温材料（集团）股份有限公司 | Extractable porous brick |
| CN111455134A (en) * | 2020-06-10 | 2020-07-28 | 北京联合荣大工程材料股份有限公司 | Ladle and ventilating device for bottom blowing of ladle |
| CN111534664A (en) * | 2020-06-10 | 2020-08-14 | 北京联合荣大工程材料股份有限公司 | Ladle and ventilating device for bottom blowing of ladle |
-
2008
- 2008-05-29 CN CNU2008201182670U patent/CN201205598Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011015028A1 (en) * | 2009-08-03 | 2011-02-10 | 濮阳濮耐高温材料（集团）股份有限公司 | Extractable porous brick |
| CN111455134A (en) * | 2020-06-10 | 2020-07-28 | 北京联合荣大工程材料股份有限公司 | Ladle and ventilating device for bottom blowing of ladle |
| CN111534664A (en) * | 2020-06-10 | 2020-08-14 | 北京联合荣大工程材料股份有限公司 | Ladle and ventilating device for bottom blowing of ladle |
| CN111534664B (en) * | 2020-06-10 | 2024-10-11 | 北京联合荣大工程材料股份有限公司 | Breathable device for blowing gas at bottom of steel ladle and steel ladle |
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Feng Wenxiang Document name: Notification of patent rights granted to utility models and formalities for registration |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090311 Termination date: 20150529 |
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| EXPY | Termination of patent right or utility model |