CN202943221U - H-shaped combined crystallizer - Google Patents
H-shaped combined crystallizer Download PDFInfo
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- CN202943221U CN202943221U CN 201220696163 CN201220696163U CN202943221U CN 202943221 U CN202943221 U CN 202943221U CN 201220696163 CN201220696163 CN 201220696163 CN 201220696163 U CN201220696163 U CN 201220696163U CN 202943221 U CN202943221 U CN 202943221U
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Abstract
The application provides an H-shaped combined crystallizer. The H-shaped combined crystallizer comprises two flange wide plates and two narrow plates, wherein each flange wide plate comprises a ventral shield which is formed by protruding to the middle part and flanges located on the two sides of the ventral shield, the ventral shield is used for defining the formation of a ventral shield part of an H-shaped cast blank in a blank casting process, the flanges and the narrow plates act in combination to define the formation of flange parts of the H-shaped cast blank in the blank casting process, the flanges comprise flange tips and flange bevel parts located between the ventral shield and the flange tips, the narrow plates are arranged inside the two opposite flange tips, a plurality of water pipes are arranged at the outer side of the working walls of the narrow plates, a plurality of water pipes are arranged at the outer side of the working wall of the ventral shield and at the outer side of the working walls of the flanges in the length direction of the flange wide plates, and the cross section of the water pipe close to the central line of the ventral shield is the smallest. By adopting the H-shaped combined crystallizer provided by the application, influences and destruction on the center part of the ventral shield by stress generated due to rapid cooling can be prevented, so that the ventral shield of the blank shell has uniform heat dissipation and the solidification quality of the cast blank is improved.
Description
Technical field
The application relates to a kind of H type fourplatemold, and more particularly, the application relates to a kind of H type fourplatemold that can improve H type strand web Solidification Quality.
Background technology
Crystallizer is the copper mold of a water-cooled, is the extremely important core component of conticaster.Molten steel is cooling in crystallizer, preliminary solidification forming, and have certain thickness base shell, this process is continuous at base shell and crystallizer wall, complete under relative motion, therefore crystallizer has good and uniform thermal conductivity and rigidity, so that process of setting evenly, steadily.
The crystallizer of prior art is comprised of the steel construction of copper coin or copper pipe and outside, and the effect of copper coin or copper pipe is that the heat with molten steel passes to cooling water.Such crystallizer generally has two classes: (1) inner surface does not have the crystallizer of coating or coating; (2) inner surface plate a layer thickness be about 20～80 microns, than the crystallizer of the wear-resisting metal or alloy of copper (as the alloy of nickel or chromium), the purpose that increases this coating is to improve the service life of crystallizer and slows down the copper coin wearing and tearing, but can not change the original heat conductivility of crystallizer.And in the production of current continuous casting, the thermal conductivity of crystallizer is the key factor of appreciable impact continuous casting billet quality.
The crystallizer of any type no matter, the heat radiation form that the base shell that has solidified contacts with the crystallizer inwall can be considered as one dimensional heat transfer, H type crystallizer web portion also is considered as one dimensional heat transfer, but the strand web is thinner, thermal conductivity is higher than other positions, therefore, usually cause web portion sharply cooling, have a strong impact on Solidification Quality and crackle even occurs.
Particularly, the interior strand web of H type fourplatemold place base shell is subjected to the crystallizer wall effect, can regard the one dimensional heat transfer state that is in as, compare thinner thickness with the edge of a wing, heat flow ambassador's web is sharply cooling, web base shell center is compared with two ends and is had thermograde, in the situation that intensity of cooling is the same, strand web middle part is cooling very fast, early form the base shell, two ends are cooling slower, more late formation base shell, thereby cause web base shell to be subjected to effect of stress, when serious, web middle part base shell forms the web longitudinal crack under effect of stress.Due to cooling fast in the middle part of web, initial solidification shell is shunk early, just form non-uniform gap from solidifying beginning, cause thermal resistance sharply to increase, affect the base shell and evenly grow.No matter inner surface is have or without the crystallizer of coating, coating, all can't change the original thermal conductivity of crystallizer.
Chinese patent application CN1401449A announces a kind of mould product with heat insulation and wear-resistant coating that is applicable in continuous casting installation for casting.The composition of this crystallizer is that the outer cover at the crystallizer copper wall has water jacket, Tong Bi top in crystallizer scribbles heat insulation and wear-resistant coating, but considering due to the difference of H type mold shape difference and heat dissipation environment, this patent application can't not take into account H type strand web portion Solidification Quality to the Special Influence that the continuous casting billet web produces in the surface of effectively improving continuous casting billet and internal soundness.
For addressing the above problem, the way that industry is more general is, considers the evenly cooling of H type strand web, reduces H type copper pipe web portion water cavity volume, but still can't solve evenly cooling problem of H type strand web portion.
Summary of the invention
The application's purpose is to provide a kind of H type fourplatemold, with the cooling problem at the strand web middle part that solves that prior art exists.
The application's purpose is to provide a kind of H type fourplatemold, the even problem of strand web inhomogeneous cooling that exists to solve prior art.
In order to address the above problem, the application provides a kind of H type fourplatemold, comprise two flange wide plates and two narrow boards, wherein, each flange wide plate comprises the edge of a wing of protruding the web that forms to the centre and being positioned at described web both sides, described web is used for limiting the web position that forms H type strand when strand, the acting in conjunction when strand of the described edge of a wing and described narrow boards forms the position, the edge of a wing of H type strand with restriction; The described edge of a wing comprise the wing slightly and at described web and the described wing edge of a wing inclined plane part between slightly, described narrow boards is arranged at relative two described wings inside slightly; The work wall arranged outside of described narrow boards has a plurality of water pipes, and the length direction along described flange wide plate outside the work wall on described web and the described edge of a wing is provided with a plurality of water pipes, and is positioned near the sectional area minimum of the described water pipe described web center line.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, described water pipe is tubular type water pipe or square-tube type water pipe.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, described water pipe is symmetrically distributed in described web center line both sides.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, the sectional area of the described water pipe on described web center line is minimum.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, the sectional area of the described a plurality of water pipes outside the work wall of described web increases toward edge of a wing direction gradually along described web center line, and the sectional area of the water pipe at place, the close edge of a wing is maximum.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, diameter or the width of the described water pipe of the described web centerline outside the work wall of described web are 12～16mm.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, diameter or the width of the described water pipe at place, the close described web edge of a wing are 32～36mm.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, in described web width, the number of described water pipe is 5～11.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, along described web centerline toward edge of a wing direction, the diameter of the described water pipe outside the work wall of described web or width increase by the mode of arithmetic progression, and tolerance is 4～12mm.
According to a kind of preferred embodiment of above-mentioned H type fourplatemold, wherein, along described web centerline toward edge of a wing direction, the centre-to-centre spacing between the adjacent described water pipe outside the work wall of described web increases by the mode of arithmetic progression, and tolerance is 6～12mm.
the application is provided with the water pipe that differs in size outside its flange wide plate work wall, be positioned near the long-pending less of the described pipe section of described web center line, guaranteeing casting billet surface and heart section's quality control level and realizing under the prerequisite of the technology normal use such as on-line width adjustment, weaken the specific heat load of base shell web and base shell web central part, web and web central part cooling velocity are slowed down, whereby, both can avoid due to the stress of sharply cooling generation impact and the destruction on the web central part, can avoid again because initial solidification shell early shrinks the uncontrolled increase of thermal resistance that the non-uniform gap that forms causes, the harmful effect that the base shell is evenly grown and produced, thereby make base shell web Homogeneouslly-radiating, promote the casting blank solidification quality.
Description of drawings
Fig. 1 is the structural representation according to the application's preferred embodiment one;
Fig. 2 is the structural representation according to the application's preferred embodiment two.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the application is described in further details.
The even problem of web inhomogeneous cooling that exists in order to improve existing H type fourplatemold, the application provides a kind of H type fourplatemold that can improve H type continuous casting billet web condensation quality.
the application is provided with the water pipe that differs in size outside its flange wide plate work wall, guaranteeing existing crystallizer to casting billet surface and heart section's quality control level and realizing under the prerequisite of the technology normal use such as on-line width adjustment, weaken the base shell web of strand and the specific heat load of base shell web central part, web and web central part cooling velocity are slowed down, both avoided due to the stress of sharply cooling generation impact and the destruction on the web central part, avoided again affecting due to the uncontrolled increase of thermal resistance that the initial solidification shell non-uniform gap that morning, contraction formed causes the even growth of base shell, make base shell web Homogeneouslly-radiating.
As depicted in figs. 1 and 2, the H type fourplatemold of the application's preferred embodiment one and preferred embodiment two includes two flange wide plates 1 and two narrow boards 2.Wherein each flange wide plate 1 comprises the web 3 that protrudes formation to the centre and the edge of a wing 4 that is positioned at web 3 both sides, wherein, web 3 is used for limiting the web position that forms H type strand when strand, the edge of a wing 4 forms the position, the edge of a wing of H type strand with narrow boards 2 acting in conjunction when strand with restriction.In addition, the edge of a wing 4 comprises the wing slightly 6 and edge of a wing inclined plane part 5 that slightly is connected with chamfering and formed smooth transition by the inclined-plane between 6 at web 3 and the wing, and narrow boards 2 is arranged at two relative wings slightly inside of 6.In the work wall of flange wide plate 1 outside work wall of the flange wide plate 1 (inboard be exactly the interface that forms H type strand), slightly 6 be provided with a plurality of water pipes 40 and water pipe 41 through inclined-plane, the edge of a wing 5 to the wing from web 3, wherein water pipe 41 expression is positioned at the water pipe on the center line 9 of web 3, water pipe 40 remaining water pipe of expression.Water pipe 40 and water pipe 41 are along the length direction setting of flange wide plate 1, and near the pipe section that is positioned at web 3 center lines amasss less.
The water pipe 41 of preferred embodiment one shown in Figure 1 and water pipe 40 are the tubular type water pipe, and the water pipe 41 of preferred embodiment two shown in Figure 2 and water pipe 40 are the square-tube type water pipe, but the application is not limited to this, can also be the water pipe of cross section ovalize, triangle etc.
Preferably, cooling wall (work wall) outside at flange wide plate 1, although the diameter of water pipe 41 and water pipe 40 or width do not wait, but many water pipes 41 and water pipe 40 are arranged according to certain rule, and water pipe 42 diameters that the work wall outside of narrow boards arranges remain unchanged (can certainly adjust according to actual conditions).For example, water pipe 40 is symmetrically distributed in the both sides of the center line 9 of web 3, a plurality of water pipes 40 increase toward edge of a wing direction is regular gradually along the center line 9 of web 3, maximum (slightly the diameter of the water pipe at 6 places can be identical as for the water pipe at 5 places, inclined-plane, the edge of a wing and the wing near the diameter of the water pipe 40 at edge of a wing place or width, also can be from inclined-plane, the edge of a wing 5 to the wing slightly 6 water pipe diameters increase gradually, determine according to actual needs).Preferably, be positioned at the area of section of the water pipe 41 on the center line 9 of web 3 minimum.For example, the tubular type water pipe at center line 9 places or diameter or the width of square-tube type water pipe are 12～16mm, are 32～36mm near the tubular type water pipe at place, the edge of a wing or diameter or the width of square-tube type water pipe.The density of setting of tubular type water pipe or square-tube type water pipe there is no fixed numbers, and for example, in the width of web 3, the number of tubular type water pipe or square-tube type water pipe is 5～11.9 toward edge of a wing direction along web 3 from center line, and the diameter of tubular type water pipe or square-tube type water pipe or width increase by the mode of arithmetic progression, and tolerance is 4～12mm.After adjacent tubular type water pipe or the centre-to-centre spacing between the square-tube type water pipe, one is a definite value with previous difference, is also that centre-to-centre spacing also increases by the mode of arithmetic progression, and the desirable scope of tolerance is 6～12mm.
Again as shown in Figure 1, the application's preferred embodiment one comprises flange wide plate 1, narrow boards 2 and is attached to tubular type water pipe 41 and water pipe 40 on flange wide plate 1.In the preferred embodiment one, the width M of leptoprosopy is 440mm, and the width L that flange is wide is 600mm, and strand web thickness S is 90mm.The diameter R1 that is positioned at the water pipe 41 on the center line 9 of web 3 is 12mm, extends from center line 9 to edge of a wing direction, and the diameter of adjacent water pipe 40 is respectively: R2 is that 20mm, R3 are that 28mm, R4 are 36mm, and also, the arithmetic progression that is tolerance and is 8mm distributes.Correspondingly, water pipe 41 and centre-to-centre spacing N1, the N2 between adjacent water pipe 40, N3 are for being respectively 34mm, 42mm, 50mm successively, also, the arithmetic progression that is tolerance and is 8mm distributes.
Again as shown in Figure 2, the application's preferred embodiment two comprises flange wide plate 1, narrow boards 2 and is attached to water pipe 40 and water pipe 41 on flange wide plate 1.In the preferred embodiment two, the width M of leptoprosopy is 440mm, and the width L that flange is wide is 600mm, and strand web thickness size S is 90mm.The width B 1 that is positioned at the water pipe 41 on the center line 9 of web 3 is 12mm, extends from center line 9 to edge of a wing direction, and the width of adjacent water pipe 40 is respectively, and: B2 is that 20mm, B3 are that 28mm, B4 are 36mm, and also, the arithmetic progression that is tolerance and is 8mm distributes.Correspondingly, water pipe 41 and centre-to-centre spacing N1, the N2 between adjacent water pipe 40, N3 are for being respectively 34mm, 42mm, 50mm successively, also, the arithmetic progression that is tolerance and is 8mm distributes.
It is that 440mm, L are that 600mm, S are 90mm that the specification that it should be appreciated by those skilled in the art that the application's preferred embodiment one and preferred embodiment two is not limited to M.Correspondingly, width and the centre-to-centre spacing thereof of the diameter of tubular type water pipe and square-tube type water pipe also are not limited to above-mentioned numerical value, can adjust according to the specification of heat radiation needs and crystallizer.Tubular type water pipe or square-tube type water pipe can adopt the method machine-shapings such as casting of the prior art, chemical attack, machining, blast.
Tubular type water pipe and square-tube type water pipe that the application does not wait by set up diameter or width at web portion, can make the heat flow reduction by 18%～42% at web middle part, because the larger water pipe of sectional area is quick heat radiating more, the water pipe that sectional area is less dispels the heat slower, whereby, the application can effectively improve the too fast problem of web portion heat radiation, reduce due to the large heat radiation of the thinner cooling water flow of web greatly and the sharply cooling defectives such as web middle part longitudinal cracking that cause that cause soon.
In sum, the H type fourplatemold that provides of the application has following advantage:
The first, simple in structure, small investment, be easy to realize and safeguard.
The second, do not affect prior art to the quality control level of continuous casting billet surface and heart section and the on-line width adjustment technology of H type fourplatemold.
The 3rd, make the temperature reduction minimizing of base shell web portion position, thereby make because the little bubble that forms of contraction is little, help the base shell evenly to grow.
The 4th, can be widely used in inner surface does not have the H type crystallizer of coating or coating and the H type fourplatemold that inner surface is coated with the metal or alloy more wear-resisting than copper.
As known by the technical knowledge, the application can realize by other the embodiment that does not break away from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in the application's scope or the change that is being equal in the application's scope all comprised by the application.
Claims (10)
1. a H type fourplatemold, comprise two flange wide plates and two narrow boards, wherein,
Each flange wide plate comprises the edge of a wing of protruding the web that forms to the centre and being positioned at described web both sides, described web is used for limiting the web position that forms H type strand when strand, the acting in conjunction when strand of the described edge of a wing and described narrow boards forms the position, the edge of a wing of H type strand with restriction;
The described edge of a wing comprise the wing slightly and at described web and the described wing edge of a wing inclined plane part between slightly, described narrow boards is arranged at relative two described wings inside slightly, it is characterized in that;
The work wall arranged outside of described narrow boards has a plurality of water pipes, and the length direction along described flange wide plate outside the work wall on described web and the described edge of a wing is provided with a plurality of water pipes, and is positioned near the sectional area minimum of the described water pipe described web center line.
2. H type fourplatemold according to claim 1, is characterized in that,
Described water pipe is tubular type water pipe or square-tube type water pipe.
3. H type fourplatemold according to claim 1, is characterized in that,
Described water pipe is symmetrically distributed in described web center line both sides.
4. H type fourplatemold according to claim 1, is characterized in that,
The sectional area of the described water pipe on described web center line is minimum.
5. H type fourplatemold according to claim 1, is characterized in that,
The sectional area of the described a plurality of water pipes outside the work wall of described web increases toward described edge of a wing direction gradually along described web center line.
6. H type fourplatemold according to claim 2, is characterized in that,
Diameter or the width of the described water pipe of the described web centerline outside the work wall of described web are 12～16mm.
7. H type fourplatemold according to claim 2, is characterized in that,
The diameter or the width that are arranged on the described water pipe at the place, the close edge of a wing on described web are 32～36mm.
8. H type fourplatemold according to claim 1, is characterized in that,
In described web width, the number of described water pipe is 5～11.
9. H type fourplatemold according to claim 2, is characterized in that,
Along described web centerline toward edge of a wing direction, the diameter of the described water pipe outside the work wall of described web or width increase by the mode of arithmetic progression, and tolerance is 4～12mm.
10. H type fourplatemold according to claim 1, is characterized in that,
Along described web centerline toward edge of a wing direction, the centre-to-centre spacing between the adjacent described water pipe outside the work wall of described web increases by the mode of arithmetic progression, and tolerance is 6～12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220696163 CN202943221U (en) | 2012-12-14 | 2012-12-14 | H-shaped combined crystallizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220696163 CN202943221U (en) | 2012-12-14 | 2012-12-14 | H-shaped combined crystallizer |
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| CN202943221U true CN202943221U (en) | 2013-05-22 |
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| CN 201220696163 Expired - Fee Related CN202943221U (en) | 2012-12-14 | 2012-12-14 | H-shaped combined crystallizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962415A (en) * | 2012-12-14 | 2013-03-13 | 莱芜钢铁集团有限公司 | H-shaped combined crystallizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962415A (en) * | 2012-12-14 | 2013-03-13 | 莱芜钢铁集团有限公司 | H-shaped combined crystallizer |
| CN102962415B (en) * | 2012-12-14 | 2015-05-13 | 莱芜钢铁集团有限公司 | H-shaped combined crystallizer |
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Granted publication date: 20130522 Termination date: 20151214 |
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