CN101983799B - Beam blank continuous casting secondary cooling zone cooling device - Google Patents
Beam blank continuous casting secondary cooling zone cooling device Download PDFInfo
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- CN101983799B CN101983799B CN201010559638.0A CN201010559638A CN101983799B CN 101983799 B CN101983799 B CN 101983799B CN 201010559638 A CN201010559638 A CN 201010559638A CN 101983799 B CN101983799 B CN 101983799B
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Abstract
The invention provides a beam blank continuous casting secondary cooling zone cooling device, relating to auxiliary device for carrying out cooling treatment on casting blank on the site. The cooling device is composed of a foot roller section cooling mechanism, a zone 1 section A cooling mechanism, a zone 1 section B cooling mechanism and a zone 2 cooling mechanism; wherein the foot roller section cooling mechanism is provided with four pairs of foot roller wide face nozzles and two pairs of foot roller narrow face nozzles, the zone 1 section A cooling mechanism is provided with two pairs of zone 1 section A wide face nozzles and one pair of foot roller narrow face nozzles, the zone 1 section B cooling mechanism is provided with two pairs of zone 1 section B wide face nozzles and one pair of zone 1 section B narrow face nozzles, and the zone 2 cooling mechanism is provided with two zone 2 section wide face nozzles and one pair of zone 2 section narrow face nozzles. The invention has the advantages of simple and reasonable structure and reliable use; casting blank surface heat transfer rule is followed, and utilization of water is reasonable and effective; temperature difference of different parts on cross section of casting blank is reduced, casting blank temperature and structural homogeneity are obviously improved, crack of casting blank can be effectively reduced, quality of casting blank is improved, blank yield is improved, and production is promoted.
Description
Technical field
The invention belongs to continuous casting of metal, relate in particular to at the scene casting ingot being carried out the auxiliary equipment of cooling processing.
Background technology
Because employing continuous casting special-shaped base rolled h-section steel beam has, energy consumption is low, operation is few, lumber recovery is high and low cost and other advantages, and therefore, casting for shaped blank continuous technology is at home and abroad greatly developed in recent years.In casting for shaped blank continuous process, continuous casting billet enters sufficient roller section to two cold-zones of aligning, inside still has a large amount of liquid molten steel to exist, now, casting billet surface to accept nozzle water spray or aerosol cooling, by cooling water, the heat of casting billet surface is constantly discharged, simultaneously, the heat of strand inside is delivered to casting billet surface continually, make strand by outer and in solidify completely gradually.Two cold-zone Hot Metal in Beam Blanks reach 5000 to 12000mm, and web width reaches 100mm-700mm, according to length direction, are divided into continuous sufficient roller section, 1 district A section, 1 district B section, 2nd district and air cooling section.Its section configuration is complicated, and each point radiating condition difference is large, casting blank surface temperature skewness; Meanwhile, Hot Metal in Beam Blank specific area is large, and cooling velocity is fast.Therefore,, in two cold-zones, the cooling conditions such as arrangement of nozzles and cooling water flow have vital impact to the mass defect of strand.If secondary inhomogeneous cooling is even, strand just easily cracks defect, the particularly development of internal soundness defect.Current, the cooling device of casting for shaped blank continuous two cold-zones is: each wide of sufficient roller section established 4 nozzles, and each leptoprosopy is established 2 nozzles; 1 district A section, 1 each face of B Duan He 2nd district, district are respectively established 1 nozzle, and air cooling section is directly cooling in atmospheric environment.Its defect is, this cooling device is not effectively distinguished the layout of nozzle and water spray intensity according to the shape facility of Hot Metal in Beam Blank and casting billet surface heat transmission means, cause the intensity of cooling on Hot Metal in Beam Blank surface not realize the high temperature place weak cold effective cooling pattern in cold, low temperature place by force, thereby caused the high rate of the various mass defects such as casting billet surface and underbead crack, cause billet yield low, waste product is many, has increased energy resource consumption, has affected production.
Summary of the invention
The defect existing in order to overcome prior art, the object of this invention is to provide a kind of casting for shaped blank continuous two cold-zone cooling devices, the feature large and decay in the longitudinal direction that fluctuates on cross section according to the temperature of Hot Metal in Beam Blank arranges nozzle, make strand cold by force at high temperature place, cold a little less than low temperature place, reduce strand Transverse Temperature Gradient; Base shell evenly solidifies, and reduces strand crackle, improves billet yield.
Casting for shaped blank continuous two cold-zone cooling devices, by sufficient roller section cooling body, 1 district A section cooling body, 1 district B section cooling body, 2 section cooling bodies, formed, the nozzle that above-mentioned cooling body is established is connected with feed pipe, feed pipe is fixed on the spraying rack arranging along strand two cold-zones, be characterized in the corresponding strand foot of described sufficient roller section cooling body roller section, wide nozzle of 4 pairs of sufficient rollers is set, to wide, directly water spray strengthening is cooling, 2 pairs of sufficient roller leptoprosopy nozzles are set, to leptoprosopy directly spray water strengthening cooling; 1 district A section of the described corresponding strand of 1 district A section cooling body, arranges wide nozzle of 2 pairs of 1 district's A sections, wide face is sprayed water cooling, and 1 pair of leptoprosopy nozzle is set, and to leptoprosopy water spray, carries out cooling; The corresponding strand 1 district B section of 1 described district B section cooling body, arranges wide nozzle of 2 pairs of 1 district's B sections, wide face is sprayed water cooling, and 1 pair of 1 district B section leptoprosopy nozzle is set, and leptoprosopy is sprayed water cooling; Corresponding strand 2 sections of 2 described section cooling bodies, arrange wide nozzle of 2 pairs of 2 sections, wide face are sprayed water cooling, and 1 pair of 2 section leptoprosopy nozzle is set, and corresponding strand 2 sections, spray water to leptoprosopy cooling.
The wide face of above-mentioned strand refers to that leptoprosopy refers to the lateral surface on the edge of a wing by two edge of a wing medial surfaces and the synthetic arcwall face of web surface.
The present invention further improves, described sufficient roller section cooling body, wide nozzle of the sufficient roller of its 4 couple is arranged in order along the vertical line of strand, both sides nozzle and vertical direction angle 25-35 °, middle two nozzles are vertical with web, it is crossing with outside, top, the edge of a wing that it sprays conical surface outside, and the inner side conical surface connects, and covers wide of sufficient roller section; Its 2 pairs of foot roller segment narrow surface nozzles are vertical with leptoprosopy, and its injection conical surface inner side joins at leptoprosopy center line, and outside and leptoprosopy edge intersect.The four bight injection flow rates that top, the edge of a wing and width face join are few.
The another improvement of the present invention, 1 described district A section cooling body, its 2 couple wide nozzle of 1 district's A section and vertical direction angle 10-16 °, injection center is all positioned at strand R angle place, and Kuan Mian center is hung down foldedly inside the injection conical surface of two nozzles, and outside is positioned at that top, the edge of a wing is following, do not spray water in top, the edge of a wing; Qi Dui aims at leptoprosopy center in 1 district A section leptoprosopy nozzle ejection center, and its nozzle ejection conical surface is given below top, the edge of a wing, near strand bight, does not spray water.
The another improvement of the present invention, 1 described district B section cooling body, its 2 couple wide nozzle of 1 district's B section and vertical direction angle 8-15 °, injection center is all located in R angle, inside the nozzle ejection conical surface, Kuan Mian center is overlapping, outside be positioned at inclined-plane, the edge of a wing high 3/4, do not spray water in top, the edge of a wing to 1/4 region, inclined-plane, the edge of a wing; Leptoprosopy center is aimed at by its 1 couple 1 district B section leptoprosopy nozzle center, and the diameter of nozzle ejection cone coverage rate is less than 3/4 of edge of a wing height, does not spray water in leptoprosopy edge.
Last improvement of the present invention, 2 described section cooling bodies, wide nozzle of its two couple 2 sections and vertical direction angle 9-12, injection center is all located in strand R angle, inside the nozzle ejection conical surface, Kuan Mian center is overlapping, outside is positioned at 1/2 place that inclined-plane, the edge of a wing is high, is not sprayed water in top, the edge of a wing to 1/2 region, inclined-plane, the edge of a wing; Leptoprosopy center is aimed at by its 1 couple 2 section leptoprosopy nozzle center, and the diameter of spray cone coverage rate is less than 1/2 of edge of a wing height, and leptoprosopy edge and leptoprosopy limit portion do not spray water.
The setting of each section of nozzle of the present invention is large according to Hot Metal in Beam Blank section configuration fluctuations and arranges along strand length direction temperature damping's feature." spill " R angular zone of strand, hot-fluid is difficult to derive, so R angle is aimed at by nozzle center, strengthens cooling; And four " convex " corner regions of edge of a wing tip edge are because being subject to two dimension cooling, easily heat radiation, so all in spraying conical surface edge or in addition.Foot roller section temperature is high, so it is many that nozzle quantity is set.During continuous casting, strand, continuously ceaselessly by nozzle region, is adjusted the water yield of each section of nozzle, carries out coolingly, more cooling through the air of air cooling zone, is frozen into base.
Compared with prior art, advantage is simple and reasonable for structure, uses reliable; Adapt to casting billet surface heat transmission rule, realize the concentrated R angular zone of heat cold by force, two-dimentional cooling corner areas is weak cold, and the utilization of water rationally, effectively; The different parts temperature difference on strand cross section reduces, and strand temperature and structural homogenity significantly improve, and effectively reduces the generation of strand crackle, has improved slab quality, improves billet yield, has promoted production.
Accompanying drawing explanation
The invention will be further described to contrast accompanying drawing below.
Fig. 1 is casting for shaped blank continuous two cold-zone cooling device configuration schematic diagram.
Fig. 2 is that the A-A of Fig. 1 is to schematic diagram.
Fig. 3 is Hot Metal in Beam Blank foot roller section cooling body nozzle schematic diagram.
Fig. 4 is Hot Metal in Beam Blank 1 district A section cooling body nozzle schematic diagram.
Fig. 5 is Hot Metal in Beam Blank 1 district B section cooling body nozzle schematic diagram.
Fig. 6 is Hot Metal in Beam Blank 2 section cooling body nozzle schematic diagrames.
In Fig. 1-Fig. 6: 1, sufficient roller section cooling body 2,1 district A section cooling body 3,1 district B section cooling body 4,2 section cooling bodies 5, air cooling section 6, top, the edge of a wing 7, R angle 8, web 9, the edge of a wing 10,11,12,13, wide nozzle of wide nozzle of sufficient roller leptoprosopy nozzle 16,17, the 1 district's A section of wide nozzle of sufficient roller 14,15 18,1 district A section leptoprosopy nozzle 19,20,1 district's B section wide nozzle 21,1 district B section nozzle 22,23,2 section 24,2 section leptoprosopy nozzles
The specific embodiment
Cooling device of the present invention, cooling for Hot Metal in Beam Blank two cold-zone water sprays.The long 6000-7500mm of two cold-zone bases, edge of a wing height 450mm, web width 400mm, web thickness 120mm, Zu Gunduan 1 district A section, the length of 1 district B section and 2 sections is respectively 200-300mm, 800-1000mm, 1900-2200mm, 2800-3400mm.
By Fig. 1, Fig. 2, can be found out, Hot Metal in Beam Blank two cold-zones are divided into: sufficient roller section, 1 district A section, 1 district B section, 2 sections and air cooling section, wherein, foot roller section, 1 district A section, 1 district B section, 2 sections arrange respectively cooling body, each cooling body arranges nozzle and sprays water cooling, the nozzle that above-mentioned cooling body arranges is connected with feed pipe, and feed pipe is fixed on the spraying rack arranging along strand two cold-zones and (in feed pipe, spraying rack figure, does not mark).Air cooling section is nature cooling zone.The nozzle of two wide and two leptoprosopy of each section of strand is symmetrical arranged, identical, and the jet angle of sufficient roller section nozzle is 80 °～100 °, and the nozzle ejection angle of its excess-three section cooling body is 100 °～140 °.
As seen from Figure 3, foot roller section cooling body 1 consists of wide nozzle of sufficient roller 10,11,12,13 and sufficient roller leptoprosopy nozzle 14,15, wide nozzle of foot roller 10,13 lateral separations from web center are 200～240mm, be 30 ° of angles with vertical direction, nozzle center's line-spacing edge of a wing inclined-plane 120～140mm, makes nozzle water spray cut arc edge and just intersects with outside, top, the edge of a wing; Foot roller wide nozzle 11,12 is vertical with web, and vertical height is 80～100mm, apart from the lateral separation at web center, is 70～80mm; Wide nozzle of foot roller 10,13 along web center line axisymmetricly; Wide nozzle of foot roller 11,12 along web center line axisymmetricly; Foot roller leptoprosopy nozzle 14,15 is vertical with leptoprosopy, and vertical height is 180～200mm, from the lateral separation of leptoprosopy center line, is 95～115mm, makes nozzle cut arc edge just crossing with leptoprosopy edge; Foot roller leptoprosopy nozzle 14,15 along leptoprosopy center line axisymmetricly.
1 district A section cooling body 2 consists of wide nozzle 16 of 1 district's A section, 17He 1 district A section leptoprosopy nozzle 18 as seen from Figure 4,1 district's A section wide nozzle 16,17 and vertical direction are 12～15 ° of angles, horizontal range from web center line is 150～170mm, vertical range from web is 190～210mm, the spray field of nozzle, from inclined-plane, the edge of a wing to web, does not comprise top, the edge of a wing.Nozzle 16,17 along web center line axisymmetricly; 1 district A section leptoprosopy nozzle 18 is arranged vertically along leptoprosopy center line, from leptoprosopy distance, is 200～220mm, and there is the distance of 12～16mm in nozzle ejection conical surface outside from leptoprosopy edge.
As seen from Figure 5,1 district B section cooling body 3 consists of wide nozzle 19 of 1 district's B section, 20He 1 district B section leptoprosopy nozzle 21,1 district's B section wide nozzle 19,20 and vertical direction are 8～11 ° of angles, horizontal range from web center is 125～145mm, vertical range from web surface is 175～195mm, makes not to be included in spray field beyond top, the edge of a wing to inclined-plane, the edge of a wing 45～60mm.Wide nozzle of 1 district's B section 19,20 along web center line axisymmetricly; 1 district B section leptoprosopy nozzle 21 is arranged vertically along leptoprosopy center line, apart from leptoprosopy height, is 150～170mm, makes leptoprosopy edge 56～75mm not in spray field.
As seen from Figure 6,2 section cooling bodies 4 consist of wide nozzle of 2 sections 22,23 and 2 section leptoprosopy nozzles 24,2 sections wide nozzle 22,23 and vertical direction are 9～12 ° of angles, horizontal range from web center is 120～140mm, vertical range from web surface is 135～155mm, makes top, the edge of a wing to inclined-plane, edge of a wing 83mm in addition not in spray field.Wide nozzle of 2 sections 22,23 along web center line axisymmetricly; 2 section leptoprosopy nozzles 24 are arranged vertically along leptoprosopy center line, apart from leptoprosopy height, are 90～110mm, make leptoprosopy edge 115～135mm not in spray field.
Claims (6)
1. casting for shaped blank continuous two cold-zone cooling devices, by sufficient roller section cooling body (1), 1 district A section cooling body (2), 1 district B section cooling body (3), 2 section cooling bodies (4) form, the nozzle that above-mentioned cooling body is established is connected with feed pipe, it is characterized in that nozzle being set and adjusting the water yield according to Hot Metal in Beam Blank section configuration with along strand length temperature damping, described sufficient roller section cooling body (1) arranges wide nozzle (10 of 4 pairs of sufficient rollers, 11, 12, 13) and 2 pairs of sufficient roller leptoprosopy nozzles (14, 15), wide nozzle (10 of foot roller, 13) with vertical direction angle 25-35 °, water spray strengthening is cooling, 1 district A section cooling body (2) arranges 2 pairs of wide nozzles (16,17) and 1 pair of leptoprosopy nozzle (18), and wide nozzle of 1 district's A section (16,17) and vertical direction angle 10-16 °, spray water cooling, 1 district B section cooling body (3) arranges 2 pairs of wide nozzles (19,20) and 1 pair of leptoprosopy nozzle (21), and wide nozzle of 1 district's B section (19,20) and vertical direction angle 8-15 °, spray water cooling, 2 section cooling bodies (4) arrange 2 pairs of wide nozzles (22,23) and 1 pair of leptoprosopy nozzle (24), and wide nozzle of 2 sections (22,23) and vertical direction angle 9-12 °, spray water cooling, the injection center of wide nozzle of its mesopodium roller (10,13), wide nozzle of 1 district's A section (16,17), wide nozzle of 1 district's B section (19,20), wide nozzle of 2 sections (22,23) is all positioned at R angle (7) and locates, the edge of a wing (6) tip edge " convex " corner region is all in spray-cone angle edge or in addition, injection flow rate is few, or do not spray water.
2. casting for shaped blank continuous two cold-zone cooling devices according to claim 1, it is characterized in that: described sufficient roller section cooling body (1), wide the nozzle of the sufficient roller of 4 couple (10,11,12,13) arranging is arranged in order along vertical line, both sides nozzle (10,13) and vertical direction angle 25-35 °, middle two nozzles (11,12) are vertical with web (8), it is crossing with outside, top, the edge of a wing (6) that it sprays conical surface outside, and the inner side conical surface connects, and covers wide of sufficient roller section; Its 2 pairs of foot roller segment narrow surface nozzles (14,15) are vertical with leptoprosopy, and it is crossing at leptoprosopy center line that it sprays conical surface inner side, and outside and leptoprosopy edge intersect.
3. casting for shaped blank continuous two cold-zone cooling devices according to claim 1, it is characterized in that: 2 couple wide nozzle of 1 district's A section (16,17) and vertical direction angle 10-16 ° that 1 described district A section cooling body (2) arranges, its nozzle ejection center is all positioned at strand R angle (7) and locates, inside the injection conical surface of two nozzles, hang down and fold in Kuan Mian center, and outside is positioned at the edge of a wing (6) below top; Leptoprosopy center is aimed at its 1st district A section leptoprosopy nozzle (18) injection center, and its nozzle ejection conical surface gives the edge of a wing (6) below top.
4. casting for shaped blank continuous two cold-zone cooling devices according to claim 1, it is characterized in that: 2 couple wide nozzle of 1 district's B section (19,20) and vertical direction angle 8-15 ° that 1 described district B section cooling body (3) arranges, its injection is centered close to strand R angle (7) and locates, inside the two nozzle ejection conical surfaces, Kuan Mian center is overlapping, outside be positioned at inclined-plane, the edge of a wing (6) high below 3/4; Its 1 couple aims at leptoprosopy center in 1 district B section leptoprosopy nozzle (21) center, and the diameter of nozzle ejection cone coverage rate is less than 3/4 of edge of a wing height.
5. casting for shaped blank continuous two cold-zone cooling devices according to claim 1, it is characterized in that: 2 described section cooling bodies (3) arrange wide nozzle of 2 pairs of 2 sections (22,23) and vertical direction angle 9-12 °, injection center is all positioned at strand R angle (7) and locates, inside the two nozzle ejection conical surfaces, Kuan Mian center is overlapping, outside be positioned at inclined-plane, the edge of a wing high below 1/2; Its 1 couple aims at leptoprosopy center in 2 section leptoprosopy nozzle (24) centers, and the diameter of spray cone coverage rate is less than 1/2 of the edge of a wing (6) height.
6. casting for shaped blank continuous two cold-zone cooling devices according to claim 1, it is characterized in that: the nozzle of two wide and two leptoprosopy of each section of strand is symmetrical arranged, the jet angle of foot roller section cooling body (1) nozzle is 80 °～100 °, and the nozzle ejection angle of its excess-three section cooling body is 100 °～140 °.
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| CN201010559638.0A CN101983799B (en) | 2010-11-18 | 2010-11-18 | Beam blank continuous casting secondary cooling zone cooling device |
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| CN201010559638.0A CN101983799B (en) | 2010-11-18 | 2010-11-18 | Beam blank continuous casting secondary cooling zone cooling device |
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| CN101983799B true CN101983799B (en) | 2014-04-30 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102508943B (en) * | 2011-09-28 | 2013-10-30 | 中冶南方工程技术有限公司 | Slab continuous casting secondary cooling off-line simulation system and method |
| CN103464708B (en) * | 2013-09-06 | 2015-08-26 | 上海宝锋工程技术有限公司 | A kind of cooling twice arrangement of nozzles method that blank plates of silicon steels continuous casting is produced |
| CN110788293B (en) * | 2019-12-18 | 2021-05-18 | 马鞍山钢铁股份有限公司 | High-weather-resistance continuous casting process for special-shaped blank for hot rolling H-shaped steel |
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| JP4200844B2 (en) * | 2003-08-11 | 2008-12-24 | 東京エレクトロン株式会社 | Heat treatment equipment |
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| JPS5639158A (en) * | 1979-09-04 | 1981-04-14 | Kawasaki Steel Corp | Continuous casting device for beam blank |
| JPH04200844A (en) * | 1990-06-25 | 1992-07-21 | Nkk Corp | Cooling method for continuously casting steel beam blank |
| JPH09174210A (en) * | 1995-12-27 | 1997-07-08 | Kawasaki Steel Corp | Method for continuously casting high mo steel |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4200844B2 (en) * | 2003-08-11 | 2008-12-24 | 東京エレクトロン株式会社 | Heat treatment equipment |
| CN101883649A (en) * | 2007-12-03 | 2010-11-10 | Sms西马格股份公司 | Device for controlling or regulating a temperature |
| CN101367118A (en) * | 2008-05-17 | 2009-02-18 | 马鞍山钢铁股份有限公司 | Double-cooling section cooling water blowing apparatus for special-shaped blank continuous casting and uses method |
| CN101823135A (en) * | 2009-03-07 | 2010-09-08 | Sms康卡斯特股份公司 | Be used to produce the preshaping body particularly continuous cast method and the equipment of double T preshaping body |
| CN201855931U (en) * | 2010-11-18 | 2011-06-08 | 马鞍山钢铁股份有限公司 | Cooling device of secondary cooling area for special-shaped blank continuous casting |
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