CN109047699A - Circulating cooling convex roller under a kind of solidification end weight - Google Patents
Circulating cooling convex roller under a kind of solidification end weight Download PDFInfo
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- CN109047699A CN109047699A CN201811242292.4A CN201811242292A CN109047699A CN 109047699 A CN109047699 A CN 109047699A CN 201811242292 A CN201811242292 A CN 201811242292A CN 109047699 A CN109047699 A CN 109047699A
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- cooling
- convex roller
- cooling tube
- roll
- roller
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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
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention belongs to conticaster Continuous Casting Rolls fields, and in particular to one kind is for the convex roller of square billet circulating cooling under solidification end weight.Circulating cooling convex roller under a kind of solidification end weight, the middle part protrusion both ends of the convex roller are with gradual curvature curve transition, convex roller one end center is connected with external cooling line, inside cools down casting roll inside by circulation cooling circuit, and the other end is connected by keyway with drive system.Invention increases the cooling efficiencies of casting roll, it can guarantee that the mechanical performances such as intensity, the hardness of roller meet requirement, reduce the amplitude that alternation mechanical stress generates, reduce the temperature difference that roll surface is heated repeatedly, cooled down, extend roll surface and the time of netted fire check occurs to reduce the probability for generating fatigue crack, enhance that roll surface is corrosion-resistant and wear resistance, avoids casting roll bending deformation and unstability roll breakage accident occurs, extend casting roll service life.
Description
Technical field
The invention belongs to conticaster Continuous Casting Rolls fields, and in particular to circulating cooling convex roller under a kind of solidification end weight.
Background technique
With the fast development of manufacturing industry and science and technology, steel internal soundness is put forward higher requirements, center porosity
It is the principal element for restricting continuous casting billet internal soundness with central pipe, proposes solidification end weight Reduction Technology thus.Continuous casting and solidifying
End weight Reduction Technology is to make full use of casting billet surface and the larger feature of the center portion temperature difference in casting blank solidification latter stage, to slab into
The pressure of row aximal deformation value, keeps drafts fully penetrated to slab center portion, so that it is loose or even thin to reach soldering solidification shrinkage cavity
Change the technological effect of center portion austenite grain.
Conticaster Continuous Casting Rolls are critical components on continuous casting machine fan-shaped segment, and casting roll plays the bending of slab, aligning and conveying
Important function, the high temperature resistance and service life of casting roll are directly related to slab quality and recovery rate of iron.Existing casting roll
Roller is cooled down using the method for axle center setting water cooling hole, but the type of cooling of axle center setting water cooling hole, only to roller
Sub- axis part is cooling, and roll surface is not adequately cooled, and is also easy to produce the netted fire check of roll surface and by high-temperature oxydation and cooling water
Corrosiveness, cause oxidation with corrosion squama wrinkle, accelerate roll surface wearing.
According to this theory, researcher both domestic and external proposes a variety of design sides for Continuous Casting Rolls cooling trough
Case.Such as patent CN201855926U proposes straight flute cooling bath Continuous Casting Rolls driven voller.Patent CN204094093U proposes continuous casting
Roller shallow-layer water-cooling structure.Patent 206083798 proposes a kind of Continuous Casting Rolls of internal water circulation structure.Patent CN105215312A
It is proposed a kind of twin-roll thin strip continuous casting roller cooling water inflow control method.Patent CN201613334U proposes a kind of plate blank continuous casting roll.
Although the cooling structure that above-mentioned patent is proposed can well cool down casting roll, thermal stress collection is avoided the occurrence of
In, but it is difficult to ensure that under weight in implementation process, in face of severe roller stock contact environment, casting roll has enough intensity and reliable
Property.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, provided by the invention to be designed to provide for a kind of solidification end weight
Circulating cooling convex roller is depressed, technical scheme is as follows:
Circulating cooling convex roller under a kind of solidification end weight, the both ends of the convex roller with gradual curvature curve transition extremely
Middle part, middle part are equipped with protrusion；
Convex roller one end center is equipped with the central cooling tube road being connected with external cooling line；
8 axial cooling tubes are uniformly distributed in the convex roller end face outside, and on end 16 be equipped with outer water inlet；
Longitudinal cooling tube, axial cooling tube and cyclic annular cooling tube are equipped with inside the convex roller；
By being connected to form the circulation cooling circuit communicated between longitudinal cooling tube, axial cooling tube and cyclic annular cooling tube,
Casting roll inside is cooled down；Inside carries out casting roll inside by circulation cooling circuit to cool down equally distributed cooling trough,
Intensity of cooling and cooling uniformity are improved, avoids generating built-in thermal stress concentration, the cooling trough cooling effect can prolong
Roller set surface is extended to, roll surface surface temperature is reduced, reduces bending deformation and Under Thermal Fatigue Damage, improve service life.
Central cooling tube road grafting simultaneously passes through circulation cooling circuit；
The convex roller other end is connected by keyway with drive system.
Circulating cooling convex roller under a kind of solidification end weight, preferred embodiment are that convex roll material is
42CrMo。
The invention has the benefit that raising intensity of cooling is equal with cooling invention increases the cooling efficiency of casting roll
Even property avoids generating built-in thermal stress concentration, can guarantee that the mechanical performances such as intensity, the hardness of roller meet requirement, drop
The amplitude that low alternation mechanical stress generates reduces the temperature difference that roll surface is heated repeatedly, cooled down, and extends roll surface and netted fire check occurs
Time generates the probability of fatigue crack to reduce, and roll surface is corrosion-resistant and wear resistance for enhancing, avoid casting roll bending deformation and
Unstability roll breakage accident occurs, extends casting roll service life.
Detailed description of the invention
Fig. 1 is the convex roller main view half-section diagram of circulating cooling under solidification end weight；
Fig. 2 is the left view of Fig. 1.
1 is center cooling line in figure；2 be cyclic annular cooling line；3 be outer water inlet；4 be to be connected with drive system
End；5 be protrusion；6 be longitudinal cooling tube；7 be axial cooling tube.
Specific embodiment
As shown in Figs. 1-2, circulating cooling convex roller under a kind of solidification end weight, the both ends of the convex roller are with gradual change song
Rate curve transition to middle part, middle part is equipped with protrusion 5；
Convex roller one end center is equipped with the central cooling tube road 1 being connected with external cooling line；
Axial cooling tube 7 is uniformly distributed in the convex roller end face outside, and end is equipped with 16 outer water inlets 3；
Longitudinal cooling tube 6, axial cooling tube 7 and cyclic annular cooling tube 2 are equipped with inside the convex roller；
It is returned by being connected to form the circulating cooling communicated between longitudinal cooling tube 6, axial cooling tube 7 and cyclic annular cooling tube 2
Road cools down casting roll inside；Inside carries out casting roll inside by circulation cooling circuit to cool down equally distributed cooling water
Slot improves intensity of cooling and cooling uniformity, avoids generating built-in thermal stress concentration, the cooling trough cooling effect can
Roller set surface is extended to, roll surface surface temperature is reduced, reduces bending deformation and Under Thermal Fatigue Damage, improve service life.
1 grafting of central cooling tube road simultaneously passes through circulation cooling circuit；
The convex roller other end is connected by keyway with drive system connecting pin 4.
Convex roll material is 42CrMo.
Embodiment described above is merely preferred embodiments of the present invention, and protection scope of the present invention is not limited to
This, anyone skilled in the art within the technical scope of the present disclosure, the technical side that can be become apparent to
The simple change or equivalence replacement of case, all belong to the scope of protection of the present invention within.
Claims (2)
1. circulating cooling convex roller under a kind of solidification end weight, it is characterised in that: the both ends of the convex roller are with gradual curvature
Curve transition to middle part, middle part is equipped with protrusion；
Convex roller one end center is equipped with the central cooling tube road being connected with external cooling line；
It is uniformly distributed 8 axial cooling tubes in the convex roller end face outside, and is equipped with 16 outer water inlets on end altogether；
Longitudinal cooling tube, axial cooling tube and cyclic annular cooling tube are equipped with inside the convex roller；
By being connected to form the circulation cooling circuit communicated between longitudinal cooling tube, axial cooling tube and cyclic annular cooling tube, to casting
It is cooled down inside roller；
Central cooling tube road grafting simultaneously passes through circulation cooling circuit；
The convex roller other end is connected by keyway with drive system.
2. circulating cooling convex roller under a kind of solidification end weight according to claim 1, it is characterised in that convex roller material
Material is 42CrMo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242292.4A CN109047699A (en) | 2018-10-24 | 2018-10-24 | Circulating cooling convex roller under a kind of solidification end weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811242292.4A CN109047699A (en) | 2018-10-24 | 2018-10-24 | Circulating cooling convex roller under a kind of solidification end weight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109047699A true CN109047699A (en) | 2018-12-21 |
Family
ID=64765470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811242292.4A Pending CN109047699A (en) | 2018-10-24 | 2018-10-24 | Circulating cooling convex roller under a kind of solidification end weight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109047699A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144363A (en) * | 1979-04-18 | 1980-11-11 | Mannesmann Ag | Continuous casting roll for continuous casting device of steel |
| JPS58196154A (en) * | 1982-05-10 | 1983-11-15 | Kobe Steel Ltd | Ceramic sleeve type roll |
| US4442883A (en) * | 1981-04-13 | 1984-04-17 | Kubota Ltd. | Roll for continuous casting |
| CN1478003A (en) * | 2000-11-29 | 2004-02-25 | Sms迪马格股份公司 | Casting roll for casting and/or supporting continuous casting billet, in particular for two-roll continuous casting machine |
| DE10357419B3 (en) * | 2003-12-02 | 2005-07-14 | Mannesmannröhren-Werke Ag | Transport roller for hot extruded steel billets has end caps covering water collection chambers to link cooling passages |
| CN100364694C (en) * | 2003-07-18 | 2008-01-30 | 奥地利钢铁联合企业阿尔卑斯工业设备制造有限公司 | Internally cooled billet guiding roller |
| CN102076444A (en) * | 2008-06-26 | 2011-05-25 | Sms西马格股份公司 | Modular strand guide roller |
| CN104399924A (en) * | 2014-11-20 | 2015-03-11 | 东北大学 | Gradient curvature raised roller of tension leveler for cogged ingot continuous casting and use method |
| CN205414354U (en) * | 2016-03-15 | 2016-08-03 | 石家庄钢铁有限责任公司 | A protruding type roll for improving continuous casting billet internal soundness |
| CN106001475A (en) * | 2016-06-07 | 2016-10-12 | 东北特钢集团大连特殊钢有限责任公司 | Gradually-varied-curvature convex roller for continuously-cast alloy steel bloom, and heavy reduction process |
| CN107107177A (en) * | 2014-12-29 | 2017-08-29 | 西门子 Vai 金属科技有限责任公司 | Roller for metallurgical equipment |
| US20170341134A1 (en) * | 2014-11-28 | 2017-11-30 | Siemens Vai Metals Technologies Gmbh | Method for casting metal strip with crown control |
-
2018
- 2018-10-24 CN CN201811242292.4A patent/CN109047699A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55144363A (en) * | 1979-04-18 | 1980-11-11 | Mannesmann Ag | Continuous casting roll for continuous casting device of steel |
| US4442883A (en) * | 1981-04-13 | 1984-04-17 | Kubota Ltd. | Roll for continuous casting |
| JPS58196154A (en) * | 1982-05-10 | 1983-11-15 | Kobe Steel Ltd | Ceramic sleeve type roll |
| CN1478003A (en) * | 2000-11-29 | 2004-02-25 | Sms迪马格股份公司 | Casting roll for casting and/or supporting continuous casting billet, in particular for two-roll continuous casting machine |
| CN100364694C (en) * | 2003-07-18 | 2008-01-30 | 奥地利钢铁联合企业阿尔卑斯工业设备制造有限公司 | Internally cooled billet guiding roller |
| DE10357419B3 (en) * | 2003-12-02 | 2005-07-14 | Mannesmannröhren-Werke Ag | Transport roller for hot extruded steel billets has end caps covering water collection chambers to link cooling passages |
| CN102076444A (en) * | 2008-06-26 | 2011-05-25 | Sms西马格股份公司 | Modular strand guide roller |
| CN104399924A (en) * | 2014-11-20 | 2015-03-11 | 东北大学 | Gradient curvature raised roller of tension leveler for cogged ingot continuous casting and use method |
| US20170341134A1 (en) * | 2014-11-28 | 2017-11-30 | Siemens Vai Metals Technologies Gmbh | Method for casting metal strip with crown control |
| CN107107177A (en) * | 2014-12-29 | 2017-08-29 | 西门子 Vai 金属科技有限责任公司 | Roller for metallurgical equipment |
| CN205414354U (en) * | 2016-03-15 | 2016-08-03 | 石家庄钢铁有限责任公司 | A protruding type roll for improving continuous casting billet internal soundness |
| CN106001475A (en) * | 2016-06-07 | 2016-10-12 | 东北特钢集团大连特殊钢有限责任公司 | Gradually-varied-curvature convex roller for continuously-cast alloy steel bloom, and heavy reduction process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20181221 |