CN1164386C - Composite roller for two cooling regions of conticaster - Google Patents
Composite roller for two cooling regions of conticaster Download PDFInfo
- Publication number
- CN1164386C CN1164386C CNB011061278A CN01106127A CN1164386C CN 1164386 C CN1164386 C CN 1164386C CN B011061278 A CNB011061278 A CN B011061278A CN 01106127 A CN01106127 A CN 01106127A CN 1164386 C CN1164386 C CN 1164386C
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- pipe
- water
- cooling
- circumferential
- roll body
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Abstract
The present invention relates to a composite roller for two cooling regions of continuous casting machines, which comprises a roller body, a sleeve pipe, a water inlet pipe and a water outlet pipe. The present invention is characterized in that circumferential cooling water tanks are equally arranged on the outer surface of the roller body in the circumferential direction; water division holes are arranged in the radial direction of the roller body; one end of an annular water diversion pipe is communicated with a radial water pipe, and the other end is respectively connected with the circumferential cooling water tanks; both ends of the roller diameter are respectively provided with the water inlet pipe and the water outlet pipe which are communicated with the radial water holes; the roller body provided with the circumferential cooling water tanks is provided with the sleeve pipe which is made of Cr-Zr-Cu alloy and is integrally combined with an inner roller body. The present invention has advantage of high cooling efficiency, heat transfer can be accelerated, and the surface of casting blanks can have uniform cooling temperature and good quality.
Description
Technical field
The invention belongs to the conticaster backing roll, especially relate to a kind of composite roller for two cooling regions of conticaster.
Background technology
The casting blank solidification that pulls out from crystallizer becomes the skim shell, and the center still is a high-temperature molten steel, forms a very long liquid core, in order to continue to solidify, exports in last length to niproll from crystallizer, and establishing a water spray cooling zone is secondary cooling zone.Be provided with water injection system and a series of nip rolls in two cold-zones, these backing rolls mainly are that strand is played clamping, guide effect, strand is in operation is unlikely the generation bulge deformation, and the cooling of strand is not played tangible effect.The cooling of strand mainly realizes by water spray, all has factor that is unfavorable for strand and the problem that can't thoroughly solve but this type of cooling is press water or air-water.1. because two cold-zone casting blank surface temperatures up to 1100 ℃, will stop the injection water droplet to contact with strand at the rapid steam blanket that forms of casting billet surface, the efficient of water spray cooling is restricted; 2. adopt water cooling mode, the casting billet surface inhomogeneous cooling is even, can cause base shell temperature recovery, makes strand easily produce middle crack or subcrack.At above problem.Adopted the types of cooling such as multistage crystallizer, cooling lattice coral, coldplate in the production, though improved cooling condition, but brought strand and device friction to increase, resistance of billet withdrawal increases, and makes problems such as complicated, difficult in maintenance.The problems referred to above have restricted the production of the special steel grade of existing conticaster exploitation casting.
Summary of the invention
The purpose of this invention is to provide a kind of cooling effectiveness height, the transmission of energy accelerated heat makes the casting billet surface chilling temperature even, the composite roller for two cooling regions of conticaster that slab quality is good.
The present invention realizes like this, it comprises roll body and sleeve pipe, water inlet pipe and outlet pipe, it is characterized in that having circumferential bosh at the outer surface circumferencial direction five equilibrium of roll body, radially be provided with tapping hole at roll body, one end of annular distributive pipe communicates with water pipe radially, the other end links to each other with circumferential bosh respectively, be respectively equipped with the water inlet pipe and the outlet pipe that communicate with water hole radially at two ends, roller footpath, sleeve pipe is installed having on the roll body of circumferential bosh, its sleeve pipe adopts copper alloy-chromium zirconium copper, is combined into one with the internal layer roll body.
Main points of the present invention also are can also plate the thin antifriction alloy of one deck on sleeve pipe.
Advantage of the present invention is owing to adopted said structure, especially the outer set copper alloy sleeve pipe of cooling water, its thermal conductivity factor is greater than the thermal conductivity factor of steel alloy, quickened heat transfer efficiency, bring immeasurable cooling effect to strand, made the strand that pulls out from crystallizer enter the environment of a good homogeneous cooling once more, improved the quality of strand, make the casting billet surface chilling temperature even, slab quality is good.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is the A-A cutaway view of Fig. 1.
The specific embodiment
Referring to accompanying drawing 1,2, the present invention includes roll body and sleeve pipe, water inlet pipe and outlet pipe, roll body 6 is by high temperature resistant, high strength alloy steel is made, it is characterized in that having circumferential bosh 5 at the outer surface circumferencial direction five equilibrium of roll body 6, radially be provided with tapping hole 2 at roll body 6, one end of annular distributive pipe 3 communicates with water pipe 2 radially, the other end links to each other with circumferential bosh 5 respectively, be respectively equipped with the water inlet pipe 1 and the outlet pipe 7 that communicate with water hole 2 radially at two ends, roller footpath, on the roll body 6 that has circumferential bosh 5, sleeve pipe 4 is installed, for improving conductivity of heat, its sleeve pipe 4 adopts copper alloy-chromium zirconium copper, and outer field copper sleeve 4 is combined into one by hot charging or alternate manner and internal layer roll body 6 behind roll forming.Ectonexine fixedly be that the welding at the sub-two ends of roller rest realizes.
Main points of the present invention also are the thin antifriction alloy of plating one deck on sleeve pipe 4, have prolonged the service life of composite roll effectively.
When cooling water enters from water inlet pipe 1, behind tapping hole 2 and annular distributive pipe 3, promptly be divided into several streams towards each tank 5, form a bigger uniform cooling surface in the whole roll body.Make the strand that pulls out from crystallizer enter the environment of a good homogeneous cooling once more, and the cooling effectiveness height, the transmission of heat has been quickened in the employing of copper sleeve, has improved the quality of strand.
The present invention is applicable to the sufficient roller section in crystallizer exit, the vertical section of vertical with bending type continuous casting machine, straight arc slab caster.Both of these case strand and roller contact the application that stressing conditions can be fit to this composite roll just, promptly roller does not need straightening, bending effect, and can demonstrate fully the advantage of its cooling, clamping and guiding.In the sheet blank continuous casting of high pulling rate was produced, evenly cooling was particularly important rapidly.The dry type type of cooling that has begun to use in addition more needs the good composite roll of this heat-transfer effect.
Claims (2)
1, a kind of composite roller for two cooling regions of conticaster, it comprises roll body and sleeve pipe, water inlet pipe and outlet pipe, it is characterized in that having circumferential bosh (5) at the outer surface circumferencial direction five equilibrium of roll body (6), radially be provided with tapping hole (2) at roll body (6), one end of annular distributive pipe (3) communicates with water pipe (2) radially, the other end links to each other with circumferential bosh (5) respectively, be respectively equipped with the water inlet pipe (1) and the outlet pipe (7) that communicate with radially water hole (2) at two ends, roller footpath, sleeve pipe (4) is installed on the roll body that has circumferential bosh (5) (6), and its sleeve pipe (4) adopts copper alloy and internal layer roll body (6) to be combined into one.
2, composite roller for two cooling regions of conticaster according to claim 1 is characterized in that can also plating the thin antifriction alloy of one deck on sleeve pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011061278A CN1164386C (en) | 2001-02-02 | 2001-02-02 | Composite roller for two cooling regions of conticaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011061278A CN1164386C (en) | 2001-02-02 | 2001-02-02 | Composite roller for two cooling regions of conticaster |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1368415A CN1368415A (en) | 2002-09-11 |
| CN1164386C true CN1164386C (en) | 2004-09-01 |
Family
ID=4655175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011061278A Expired - Fee Related CN1164386C (en) | 2001-02-02 | 2001-02-02 | Composite roller for two cooling regions of conticaster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164386C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100335203C (en) * | 2003-01-08 | 2007-09-05 | 阿尔科公司 | Caster roll |
| DE10302474A1 (en) * | 2003-01-23 | 2004-08-05 | Sms Demag Ag | Cooling of rolls in continuous casting plants |
| FR2919511B1 (en) * | 2007-07-30 | 2010-01-29 | Snecma Propulsion Solide | COMPOSITE THERMOSTRUCTURAL ROLL |
| CN102190149A (en) * | 2010-03-17 | 2011-09-21 | 上海科大重工集团有限公司 | Carrier roller device |
| CN101954463A (en) * | 2010-09-17 | 2011-01-26 | 中国重型机械研究院有限公司 | Method for designing guide roller of slab caster |
| CN102632211A (en) * | 2012-05-14 | 2012-08-15 | 南京钢铁股份有限公司 | Bloom water-cooled self-lubricating foot roller device |
-
2001
- 2001-02-02 CN CNB011061278A patent/CN1164386C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1368415A (en) | 2002-09-11 |
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