CN204770546U - Abnormal shape base conticaster - Google Patents
Abnormal shape base conticaster Download PDFInfo
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- CN204770546U CN204770546U CN201520539397.1U CN201520539397U CN204770546U CN 204770546 U CN204770546 U CN 204770546U CN 201520539397 U CN201520539397 U CN 201520539397U CN 204770546 U CN204770546 U CN 204770546U
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- shaped
- section
- fan
- hydrophone
- continuous casting
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Abstract
The utility model discloses an abnormal shape base conticaster blows the hydrophone position through improving the two cold section coolings of heterotypic base continuous casting, solves the inhomogeneous problem of casting blank cooling that heterotypic base inner arc ponding leads to, avoids the production of casting blank mass defect, the utility model discloses the conticaster is including fan -shaped I section, fan -shaped II section, the fan -shaped III section of the ladle, middle package, crystallizer and the cooling chamber that connect gradually, the fan -shaped II section of cooling chamber is installed and is blown the hydrophone more than two.
Description
Technical field
The utility model relates to metallurgical technology field, particularly relates to a kind of special-shaped billet continuous casting machine produced for Hot Metal in Beam Blank.
Background technology
The feature one of Hot Metal in Beam Blank collection square billet, circle base, slab, section Special complex is H-shaped shape, and the specific area of Hot Metal in Beam Blank is large, radiating condition is better than rectangular bloom, on section, the radiating condition difference of each point is very large, makes the temperature difference of each point on section large compared with conventional strand, produces adaptability to changes large, so the mass defect such as easily to crack, particularly continuous casting cooling twice technique has significant impact to casting billet surface and internal soundness.
Because the inner arc web of Hot Metal in Beam Blank itself is in groove-like, secondary cooling zone inner arc cooling water cannot image space base, slab etc. can flow out from the side, but accumulates at inner arc web place, easily causes inner arc ponding, cause outer arc surface temperature deviation in strand large, worsen cc billet surface quality.
Casting for shaped blank continuous casting steel grades C content is 0.12 ~ 0.20%, belongs to peritectic steel, and large especially to crack sensitivity, be attended by larger linear shrinkage and volume contraction phase transition process, strand plasticity reduces, and face crack aggravates.And strand is in secondary cooling process, because Hot Metal in Beam Blank section configuration is special in " H " type, have little time to evaporate completely at the atomized water of secondary cooling zone spray, will flow downward along the intrados of strand waist groove, and at surface scrolls, cause the excessively cold of casting billet surface local, make the overall inhomogeneous cooling of strand even, adaptability to changes is large, cracks, affects surface quality problems.Need to set up for this reason and blow hydrophone and carry out blowing water, residual water is blown off.Two cold houses of special-shaped billet casting machine are original blows the installation site of hydrophone respectively at II section of tail end of each stream and the tail end of guide section, cast length is 9m and 12m place respectively, blow hydrophone distance casting blank surface 15-18mm, distance casting blank surface is also distant, medium be compressed air, media operation pressure is at 0.35-0.42 kilogram, and pressure is less than normal.Run and find these twice to blow hydrophone to blow water effect undesirable, a small amount of water of Shi Eryou flows out from blowing hydrophone, affects the quality of strand.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of special-shaped billet continuous casting machine, blowing hydrophone position, solving the slab cooling problem of non-uniform that Hot Metal in Beam Blank inner arc ponding causes, avoiding the generation of slab quality defect by improving the cooling of casting for shaped blank continuous secondary cooling zone.
For reaching above-mentioned purpose, a kind of special-shaped billet continuous casting machine of the utility model, comprise the fan-shaped I section of ladle, tundish, crystallizer and the cooling chamber connected successively, fan-shaped II section, fan-shaped III section, the fan-shaped II section of described cooling chamber is provided with two or more and blows hydrophone.
The wherein said hydrophone that blows is two, merges and is arranged on 9m place, described in blow hydrophone and purge gap UNICOM, adjusting the height blowing hydrophone and base face is 8mm.
Wherein said fan-shaped II section end is provided with to assist and blows hydrophone.
It is wherein said that auxiliary to blow hydrophone be compressed-air line.
The utility model difference from prior art is that the utility model achieves following technique effect:
The utility model is in the use procedure of blowing hydrophone, merge into a set of secondary cooling zone blow water by original two cover secondary cooling zones are blown water, be arranged on strand cast length at 9m place, by the gap area blowing hydrophone at original 9m place, increase the pressure of medium air, have adjusted the distance on distance casting blank surface, so not only the water in strand inner arc R arm of angle portion can be blown away, and reduce surface temperature deviation, improve slab quality and continuous casting productivity ratio.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing special-shaped billet continuous casting machine;
Fig. 2 is the structural representation of the utility model special-shaped billet continuous casting machine.
Description of reference numerals: 1-ladle; 2-tundish; 3-crystallizer; The fan-shaped I section of 4-; The fan-shaped II section of 5-; The fan-shaped III section of 6-; 7-blows hydrophone I; 8-blows hydrophone II; 9-withdrawal straightening machine.
Detailed description of the invention
Below in conjunction with embodiment, to above-mentioned being described in more detail with other technical characteristic and advantage of the utility model.
Fig. 1 is the structural representation of existing special-shaped billet continuous casting machine, comprise the fan-shaped I section 4 of ladle 1, tundish 2, crystallizer 3 and the cooling chamber connected successively, fan-shaped II section 5, fan-shaped III section 6, two cold houses of special-shaped billet casting machine are original blows the installation site of hydrophone 7,8 respectively at II section of tail end of each stream and the tail end of guide section, cast length is 9m and 12m place respectively, blow hydrophone 7,8 distance casting blank surface 15-18mm, distance casting blank surface is also distant, medium be compressed air, media operation pressure is at 0.35-0.42 kilogram, and pressure is less than normal.Run and find these twice to blow hydrophone to blow water effect undesirable, a small amount of water of Shi Eryou flows out from blowing hydrophone, affects the quality of strand.
The structural representation of the utility model special-shaped billet continuous casting machine as shown in Figure 2, original fan-shaped section two cold-zone two cover is blown hydrophone 7,8 merging and is arranged on 9m place, disposable processing UNICOM is carried out in the purging gap of original 9m place being blown to hydrophone, change and blow hydrophone valve pattern, and the height that hydrophone 7,8 and base face are blown in adjustment is 8mm, increase media operation pressure at 0.58-0.7 kilogram, increase a set of compressed-air line at fan-shaped 2 sections of ends in addition and carry out auxiliary purging.
Casting for shaped blank continuous technological process:
Molten iron pretreatment → 90t top and bottom combined blown converter → steel ladle bottom argon blowing → 100tLF refining furnace → bale panoramic tables → tundish → crystallizer → fan-shaped section two cold-zones → withdrawal straightening machine → gas flame cuttiug → runout table → step cooling bed
Fan-shaped section two cold-zone is divided into 5th district: 1st ~ 3 district is arranged in fan-shaped I section, and sufficient roller is 1st district, adopts full water cooling but, in 1st district and 2nd district, outer arc adopts twin-jet nozzle arrangement form, remaining each district adopts single injector to arrange, 2nd ~ 3 district adopt aerosol cooling, and 4th ~ 5 district are arranged in fan-shaped II section; Also adopt the aerosol type of cooling, blow hydrophone in the bottom increase of the bottom of two cold-zone inner arcs fan-shaped II section and fan-shaped III section guide section in addition.
In addition, molten steel composition controls to take corresponding technological measure, comprises [P]≤0.030%, [S]≤0.010%, Mn/S > 40, Mn/Si > 2.5; The degree of superheat of molten steel at 15 ~ 30 DEG C, the specific water 0.8L/kg of secondary cooling area for continuous casting.Following embodiment web temperature is as shown in table 1.
The each embodiment web temperature of table 1 (/ DEG C)
Experiment samples the embodiment 4 come from table 1, and wherein continuous casting special-shaped base section is 555 × 440 × 105mm, and under following process conditions, pulling rate is 0.7-0.9m/min.The crystallizer water yield adopts weak cold, and the interior outer arc water yield is 2200L/min, and the left and right sides water yield is 1200L/min, and the temperature difference controls at 4-5 DEG C, adopts non-sinusoidal oscillation, and two mouths of a river full guard is poured into a mould, cold in two cold employings, specific water 0.8L/kg.Carry out company to molten steel to water, cc billet surface quality assay is as shown in table 2.
The each embodiment cc billet surface quality of table 2
As can be seen from 2, each embodiment has good surface quality, and web cracking breakout all controls below 1.0/%, meets slab quality requirement.
Above-described embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (4)
1. a special-shaped billet continuous casting machine, comprises the fan-shaped I section of ladle, tundish, crystallizer and the cooling chamber connected successively, fan-shaped II section, fan-shaped III section, it is characterized in that: the fan-shaped II section of described cooling chamber is provided with two or more and blows hydrophone.
2. special-shaped billet continuous casting machine according to claim 1, is characterized in that: described in blow hydrophone be two, merge and be arranged on 9m place, described in blow hydrophone and purge gap UNICOM, adjusting the height blowing hydrophone and base face is 8mm.
3. special-shaped billet continuous casting machine according to claim 1 and 2, is characterized in that: described fan-shaped II section end is provided with to assist and blows hydrophone.
4. special-shaped billet continuous casting machine according to claim 3, is characterized in that: described auxiliary to blow hydrophone be compressed-air line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520539397.1U CN204770546U (en) | 2015-07-23 | 2015-07-23 | Abnormal shape base conticaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520539397.1U CN204770546U (en) | 2015-07-23 | 2015-07-23 | Abnormal shape base conticaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204770546U true CN204770546U (en) | 2015-11-18 |
Family
ID=54510672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520539397.1U Withdrawn - After Issue CN204770546U (en) | 2015-07-23 | 2015-07-23 | Abnormal shape base conticaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204770546U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999046A (en) * | 2015-07-23 | 2015-10-28 | 内蒙古包钢钢联股份有限公司 | Profiled-blank continuous casting machine and profiled-blank continuous casting secondary cooling water blowing method |
| CN107552750A (en) * | 2017-08-07 | 2018-01-09 | 中冶连铸技术工程有限责任公司 | The multiple-strand caster and production method of large section Hot Metal in Beam Blank or slab can be produced |
| CN107671254A (en) * | 2017-11-13 | 2018-02-09 | 芜湖新兴铸管有限责任公司 | A kind of continuous-cast blank cooling structure |
-
2015
- 2015-07-23 CN CN201520539397.1U patent/CN204770546U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104999046A (en) * | 2015-07-23 | 2015-10-28 | 内蒙古包钢钢联股份有限公司 | Profiled-blank continuous casting machine and profiled-blank continuous casting secondary cooling water blowing method |
| CN107552750A (en) * | 2017-08-07 | 2018-01-09 | 中冶连铸技术工程有限责任公司 | The multiple-strand caster and production method of large section Hot Metal in Beam Blank or slab can be produced |
| CN107552750B (en) * | 2017-08-07 | 2023-05-23 | 中冶连铸技术工程有限责任公司 | Multi-stream continuous casting machine capable of producing extra-large section special-shaped blank or plate blank and production method |
| CN107671254A (en) * | 2017-11-13 | 2018-02-09 | 芜湖新兴铸管有限责任公司 | A kind of continuous-cast blank cooling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151118 Effective date of abandoning: 20180123 |