CN218026217U - Online quenching device for fan-shaped section of slab continuous casting machine - Google Patents
Online quenching device for fan-shaped section of slab continuous casting machine Download PDFInfo
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- CN218026217U CN218026217U CN202221897375.9U CN202221897375U CN218026217U CN 218026217 U CN218026217 U CN 218026217U CN 202221897375 U CN202221897375 U CN 202221897375U CN 218026217 U CN218026217 U CN 218026217U
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Abstract
The utility model discloses an online guenching unit of slab caster fan-shaped section relates to steelmaking continuous casting technical field, forms the cooling efficiency that forced convection physics phenomenon comes high-efficient utilization cooling water through quenching cooling water and casting blank surface, effectively reduces casting blank surface temperature, has solved among the correlation technique hot charge crack of slab hot charge to the technical problem of the adverse effect of hot charge temperature, hot charge proportion, hot charge efficiency. Including at least a set of frid, every group frid includes two frids of relative setting, two frid clamp of every group are formed with the passageway, the passageway is used for wearing through the casting blank of the last fan-shaped section back department of slab caster and passes through, the frid all is provided with the cooling water channel, the length direction of cooling water channel sets up along the width direction of slab, the week side opening of cooling water channel sets up towards another frid, length one side opening of cooling water channel is configured and is let in cooling water, so that cooling water flows through the surface of casting blank.
Description
Technical Field
The utility model relates to a steelmaking continuous casting technical field especially relates to a fan-shaped section online guenching unit of slab caster.
Background
Slab hot charging refers to the act of feeding the slab into a furnace at a temperature not lower than 200 ℃. However, the biggest problem limiting the hot-fill ratio and hot-fill efficiency is red-send cracking, also known as "hot-fill cracking". In the production practice, it has been found that when the surface temperature of the cast slab is higher than 600 ℃ and the slab is hot-charged into a heating furnace, the surface crack defect is liable to occur after rolling. Therefore, there is a need to improve hot-fill cracking.
SUMMERY OF THE UTILITY MODEL
The utility model provides an online guenching unit of slab caster fan-shaped section forms the cooling efficiency that forced convection physical phenomenon comes the high-efficient cooling water that utilizes through quenching cooling water and casting blank surface, effectively reduces casting blank surface temperature, has solved among the correlation technique hot-charging crackle of slab hot-charging to the adverse effect's of hot-charging temperature, hot-charging proportion, hot-charging efficiency technical problem.
The utility model provides an online guenching unit of slab caster fan-shaped section, including at least a set of frid, every group frid is including two frids of relative setting, two frid clamps of every group form the passageway, the passageway is used for wearing through the casting blank of the last fan-shaped section back department of slab caster, the frid all is provided with the cooling water channel, the length direction of cooling water channel sets up along the width direction of slab, the week side opening of cooling water channel sets up towards another frid, length one side opening of cooling water channel is disposed and is let in the cooling water, so that the surface of cooling water flow through the casting blank.
Optionally, the fan-shaped section online quenching device of the slab caster further comprises at least two brackets, the two brackets are respectively connected with the two trough plates of the same group, one end of each bracket is connected to one side of each trough plate far away from the other trough plate, and the other end of each bracket is fixedly arranged relative to the slab caster.
Optionally, the vertically arranged brackets are configured with a length that is adjustable so that the casting blank is at a predetermined gap from the trough plate when the casting blank passes through the channel.
Optionally, the on-line quenching device for the sector section of the slab caster further comprises at least two distribution water tanks, the two distribution water tanks are respectively installed on one side of the length of the two trough plates in the same group, the distribution water tanks are communicated with openings on one side of the length of the cooling water channel, and the distribution water tanks are configured to be filled with cooling water, so that the cooling water channel is configured to be filled with the openings on one side of the length of the cooling water channel.
Optionally, the slot plate is further provided with two water blocking channels, the distribution direction of the water blocking channels is the same as the distribution direction of the cooling water channels, and the two water blocking channels are respectively located on two opposite sides of the cooling water channels of the slot plate;
the channel that blocks water installs the water-blocking board, and the water-blocking board sets up along vertical, and the vertical both sides of water-blocking board set up with the cell wall interval of the channel that blocks water in the frid, and one side that the channel was kept away from to the water-blocking board is fixed connection with the frid, and the water-blocking board is provided with crosses the water opening.
Optionally, the trough plate further comprises a vertical baffle plate arranged at an opening on one side of the length into which the cooling water is introduced, and the opening on the other side of the length is opposite to the opening on the other side.
Optionally, the on-line quenching device for the sector section of the slab caster further comprises a cooling water source, the cooling water source is injected into the distribution water tank through a water pump, and the water pump is configured to control and adjust the pressure and flow of cooling water flowing into the cooling water channel according to the actual reduction rate of the surface temperature of the casting blank so as to enable the reduction rate of the surface temperature of the casting blank to reach a preset rate.
Optionally, the slot plates are each provided with at least two cooling water channels parallel to each other.
Alternatively, the flow direction of the cooling water channels in two trough plates belonging to the same group is reversed.
Optionally, the on-line quenching device for the segment of the slab caster is provided with at least two groups of groove plates, the casting blank sequentially passes through a channel formed by each group of groove plates, and the water flow directions of cooling water channels of two adjacent groove plates positioned on the same side of the channel are opposite.
The utility model discloses beneficial effect as follows: the utility model provides an online quenching device for fan-shaped sections of a slab caster, which is characterized in that a groove plate is arranged on the lower surface of a casting blank, and another groove plate is arranged on the upper surface of the casting blank, the formed groove plates are arranged behind the last fan-shaped section of the slab caster, and the two groove plates of each group form a channel for the casting blank to pass through; the channel plates are provided with cooling water channels, the length direction of each cooling water channel is arranged along the width direction of the slab, the openings on the peripheral sides of the cooling water channels are arranged towards the other channel plate, and the openings on one side of the length of each cooling water channel are configured to be introduced with cooling water so that the cooling water flows through the surface of the casting slab; the utility model forms plate plane cooling by sliding the surface of quenching cooling water in the width direction of the casting blank, and carries out plate surface direct cooling quenching on the surface of the quenching casting blank, thereby increasing the contact time between the cooling water and the surface of the casting blank, and leading the quenching cooling water and the surface of the casting blank to form the physical phenomenon of forced convection, effectively utilizing the cooling capacity of the cooling water, effectively reducing the surface temperature of the casting blank, saving power energy, improving the problem of low use efficiency of the cooling water during the quenching of a sector section, and simultaneously solving the problem of low surface cooling rate of the plate blank; in addition, because the forced convection cooling is carried out on the surface of the casting blank, the cooling time is controlled, the temperature change of the core part of the casting blank is small, and the subsequent processing technology of the casting blank is facilitated.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
FIG. 1 is a sectional view of an on-line quenching device for a segment of a slab caster provided by the utility model in the drawing speed direction;
FIG. 2 is a cross-sectional view of the on-line quenching device of the sector section of the slab caster provided by the utility model in the width direction of the casting blank;
fig. 3 is a specific implementation schematic diagram of the online quenching device for the sector section of the slab caster provided by the utility model.
The attached drawings are marked as follows: 1-cooling water source, 2-distribution water tank, 3-channel plate, 31-cooling water channel, 32-water blocking channel, 33-vertical baffle, 4-bracket, 5-water blocking plate, 6-casting blank, and 61-pulling speed direction.
Detailed Description
The embodiment of the utility model provides an on-line guenching unit of slab caster fan-shaped section forms the cooling efficiency that forced convection physical phenomenon comes high-efficient utilization cooling water through quenching cooling water and casting blank surface, effectively reduces casting blank surface temperature, has solved among the correlation technique hot dress crackle of slab hot dress to the adverse effect's of hot dress temperature, hot dress proportion, hot dress efficiency technical problem.
The embodiment of the utility model provides an in technical scheme for solving above-mentioned technical problem, the general thinking is as follows:
the utility model provides an online guenching unit of fan-shaped section of slab caster, including at least a set of frid, every group frid is including two frids of relative setting, two frid clamp of every group form the passageway, the passageway is used for wearing through the casting blank of the last fan-shaped section back department of slab caster, the frid all is provided with the cooling water channel, the length direction of cooling water channel sets up along the width direction of slab, the week side opening of cooling water channel sets up towards another frid, length one side opening of cooling water channel is disposed and is let in cooling water, so that cooling water flows through the surface of casting blank.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Referring to fig. 1 to 3, the present embodiment discloses an online quenching device for a sector of a slab caster, which includes at least one set of slot plates 3, each set of slot plates 3 includes two slot plates 3 disposed oppositely, the two slot plates 3 of each set are clamped to form a channel, a casting slab 6 passing through the rear of the last sector of the slab caster passes through the channel, the slot plates 3 are each provided with a cooling water channel 31, the length direction of the cooling water channel 31 is set along the width direction of the slab, the opening on the peripheral side of the cooling water channel 31 is set toward the other slot plate 3, and the opening on one side of the length of the cooling water channel 31 is configured to be introduced with cooling water so that the cooling water flows through the surface of the casting slab 6.
Specifically, by arranging one trough plate 3 on the lower surface of the casting blank 6 and another trough plate 3 on the upper surface, a group of trough plates 3 is arranged behind the last sector of the slab caster, and the two trough plates 3 in each group form a passage for the casting blank 6 to pass through. The method is applied to the rear part of the last sector section of the slab caster in detail, and the surface temperature of the casting blank 6 is reduced to 800-900 ℃ at the moment, so that the quenching and cooling of the surface of the casting blank 6 are facilitated.
The channel plates 3 are each provided with a cooling water channel 31, as shown in fig. 2, the length direction of the cooling water channel 31 is arranged along the width direction of the slab; as shown in fig. 1, the openings of the peripheral sides of the cooling water channels 31 are arranged toward the other channel plate 3, that is, the openings of the peripheral sides of the cooling water channels 31 of two channel plates 3 belonging to the same group are oppositely arranged, so that the cooling water flowing through the channels respectively flows through the upper surface and the lower surface of the casting blank 6; as shown in fig. 2 and 3, the cooling water channel 31 is open at one side of its length and is configured to allow cooling water to flow over the surface of the cast slab 6.
In detail, the surface of quenching cooling water in the width direction of the casting blank 6 slides and flows through the device to form flat plate plane cooling, the surface of the quenched casting blank 6 is directly cooled and quenched on the flat plate surface, the contact time of the cooling water and the surface of the casting blank 6 is prolonged, the time and the space of heat exchange are increased, the quenching cooling water and the surface of the casting blank 6 form a physical phenomenon of forced convection, the cooling capacity of the cooling water is efficiently utilized, the surface temperature of the casting blank 6 is effectively reduced, power energy is saved, the problem of low use efficiency of the cooling water during the quenching of a sector section is solved, and meanwhile, the problem of low surface cooling rate of a plate blank is solved.
In addition, because the forced convection cooling is carried out on the surface of the casting blank 6, the cooling time is controlled, the temperature change of the core part of the casting blank 6 is small, and the subsequent processing technology of the casting blank 6 is facilitated.
Alternatively, referring to fig. 1 and 3, each channel plate 3 is provided with at least two cooling water channels 31 parallel to each other. It will be appreciated that the number of cooling water channels 31 may be one, two, more, as shown in fig. 1 and 3 in the form of a channel plate 3 with 3 cooling water channels 31.
When the three cooling water channels 31 are selected from the groove plate 3, the processing of the groove plate 3 is facilitated, the control of the roughness and the flatness of the corresponding surface of the groove plate 3 and the casting blank 6 is specifically controlled, a convection heat exchange channel is better formed between the groove plate 3 and the surface of the casting blank 6 to be quenched, and a space distance is reserved for increasing the online quenching device of the fan-shaped section of the slab caster.
Alternatively, the water flow directions of the cooling water channels 31 in the two trough plates 3 belonging to the same group are opposite, specifically, the water flow direction of the cooling water channel 31 in the upper half of fig. 1 is inward in the vertical plane of the paper, and the water flow direction of the cooling water channel 31 in the lower half is outward in the vertical plane of the paper. The arrangement of the water flow directions in opposite directions is favorable for the cooling uniformity of the upper surface and the lower surface of the casting blank 6.
Optionally, as shown in fig. 3, the on-line quenching device for the segment of the slab caster is provided with at least two sets of the trough plates 3, the casting blank 6 sequentially passes through the passage formed by each set of the trough plates 3, and the water flow directions of the cooling water channels 31 of two adjacent trough plates 3 located on the same side of the passage are opposite, so as to further effectively compensate the uneven surface cooling quenching of the casting blank 6.
Here, the beneficial effects of selecting three cooling water channels 31 for the slot plate 3 will be described in addition: when the number of cooling water channels 31 of the channel plate 3 is too large, which results in a large width dimension of the channel plate 3, the non-uniformity of the surface cooling of the cast slab 6 is adversely affected since the water flow direction in the different cooling water channels 31 of the same channel plate 3 is generally set to be the same; on the other hand, when the number of the cooling water channels 31 of the slot plate 3 is set to be too small, there is a large room for improvement in the overall structure, cooling efficiency, and cooling effect.
Optionally, as shown in fig. 2, the on-line quenching apparatus for the segment of the slab caster further comprises at least two brackets 4, the two brackets 4 are respectively connected with the two trough plates 3 in the same group, one side of one trough plate 3 in each group, which is far away from the other trough plate 3, is connected with one end of the bracket 4, and the other end of the bracket 4 is fixedly arranged relative to the slab caster or is fixedly arranged relative to the ground. Through setting up two supports 4, support two frills 3 respectively to realize the spatial position of frill 3 and fix.
The vertically arranged supports 4 are configured to be adjustable in length so that the casting block 6 is at a predetermined gap from the trough plate 3 when the casting block 6 passes through the passage. The support 4 may specifically adopt a hydraulic cylinder, an air cylinder, or the like, and the height position of the trough plate 3 is adjusted by the support 4, so that when the casting blank 6 passes through, the gap between the casting blank 6 and the trough plate 3 is controlled within a preset range, such as the gap h shown in fig. 1 and 2. The gap h is controlled within the interval of 5-10mm so as to ensure that the casting blank 6 smoothly passes through.
Optionally, as shown in fig. 2, the on-line quenching device for the segment of the slab caster further includes at least two distribution water tanks 2, the two distribution water tanks 2 are respectively installed on one side of the length of the two trough plates 3 in the same group, the distribution water tanks 2 are communicated with openings on one side of the length of the cooling water channel 31, and the distribution water tanks 2 are configured to be filled with cooling water, so that the openings on one side of the length of the cooling water channel 31 are configured to be filled with cooling water. Specifically, cooling water is injected into the distribution water tank 2 through power, the distribution water tank 2 distributes controlled high-pressure cooling water into the cooling water channel 31 of the trough plate 3, and the high-pressure cooling water flows rapidly in the cooling water channel 31 to form a physical image of forced convection on the surface of the casting blank 6.
Optionally, the on-line quenching device for the segment of the slab caster further comprises a cooling water source 1, and the cooling water source 1 injects the cooling water into the distribution water tank 2 through a water pump so as to achieve the purpose of cooling water dynamic injection.
Alternatively, the water pump is configured to control and regulate the pressure and flow rate of the cooling water flowing in the cooling water channel 31 according to the actual reduction rate of the surface temperature of the cast slab 6 so that the reduction rate of the surface temperature of the cast slab 6 reaches a preset rate. Specifically, according to the reduction condition of the surface temperature of the casting blank 6, the pressure and the flow of the cooling water are controlled and adjusted to meet the requirement of the reduction rate of the surface temperature of the casting blank 6, and the preferred cooling rate is 5 ℃/S. Accordingly, the temperature reduction rate of the surface of the quenched casting blank 6 is effectively controlled by adjusting the pressure and flow of the cooling water, and the temperature of the surface of the casting blank 6 is set.
It should be noted that, as shown in fig. 1 and 2, when the device is operated, a gap h inevitably exists between the casting blank 6 and the trough plate 3, and cooling water flows out from the gap h; on the other hand, the cooling water flowing out of the gap h has a certain positive effect on the surface cooling of the cast slab 6.
Optionally, as shown in fig. 1, the slot plate 3 is further provided with two water blocking channels 32, a distribution direction of the water blocking channels 32 is the same as a distribution direction of the cooling water channels 31, and the two water blocking channels 32 are respectively located at two sides of the cooling water channels 31 of the slot plate 3; the channel 32 that blocks water installs the water-stop plate 5, and the water-stop plate 5 sets up along vertical, and the vertical both sides of water-stop plate 5 set up with the cell wall interval of channel 32 that blocks water in the frid 3, and the channel was kept away from to the water-stop plate 5 one side and frid 3 fixed connection, and water-stop plate 5 is provided with crosses water opening.
By installing the water blocking plate 5 in the water blocking channel 32, when the cooling water flowing out along the gap h flows into the water blocking channel 32, part of the cooling water is limited by the gap between the water blocking plate 5 and the casting blank 6, and the cooling water flows through the water through holes along the water blocking plate 5 to form a labyrinth-like water blocking space, as shown by an arrow in the water blocking channel 32 in fig. 1, so that the flow of the laterally flowing out water caused by the gap h is slowed down as a whole, and the cooling efficiency and the cooling effect of the cooling water flowing through the cooling water channel 31 on the surface of the casting blank 6 are ensured.
Alternatively, the inert gas can be introduced into the water blocking channel 32 to prevent the cooling water from flowing out, so as to improve or even solve the problem of the cooling water flowing out from the gap h.
Optionally, as shown in fig. 2, the trough plate 3 further includes a vertical baffle 33 disposed at an opening on one side of the length into which the cooling water is introduced, and the vertical baffle 33 is spaced from the casting blank 6 when the device is in operation, specifically, the cooling water flowing out of the cooling water channel 31 cools the side surface of the casting blank 6 by the redirection effect of the vertical baffle 33, so as to achieve the complete cooling of the casting blank surface.
Alternatively, the cross section of the cooling water channel 31 in the width direction may be made arcuate, i.e., the distal end away from the passage is shaped in a semicircular or semi-elliptical shape.
In conclusion, the online quenching device for the sector section of the slab casting machine has the advantages of simplicity and convenience in installation, and simplicity and easiness in maintenance and disassembly.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a fan-shaped section online guenching unit of slab caster, its characterized in that, fan-shaped section online guenching unit of slab caster includes at least a set of frid, and every group frid includes two frid that set up relatively, and two of every group the frid clamp forms the passageway, the passageway is used for wearing through the casting blank of the last fan-shaped section back department of slab caster and passes through, the frid all is provided with the cooling water channel way, the cooling water channel way:
the length direction is arranged along the width direction of the plate blank;
the peripheral side opening is arranged towards the other groove plate;
the opening on one side of the length is configured to be filled with cooling water so that the cooling water flows over the surface of the cast slab.
2. The on-line quenching device for the sector of the slab caster as claimed in claim 1, wherein the on-line quenching device for the sector of the slab caster further comprises at least two brackets, the two brackets are respectively connected with the two trough plates of the same group, one end of each bracket is connected with one side of the trough plate away from the other trough plate, and the other end of each bracket is fixedly arranged relative to the slab caster.
3. The on-line quenching device for segment segments of a slab caster as claimed in claim 2, wherein the vertically disposed brackets are configured to be adjustable in length so that the cast slab is spaced apart from the slab by a predetermined gap while the cast slab passes through the passage.
4. The on-line quenching device for the segment of the slab casting machine according to claim 1, further comprising at least two distribution water tanks, wherein the two distribution water tanks are respectively installed on one side of the length of the two trough plates in the same group, and are communicated with the openings on one side of the length of the cooling water channel, and the distribution water tanks are configured to be fed with the cooling water, so that the openings on one side of the length of the cooling water channel are configured to be fed with the cooling water.
5. The on-line quenching device for the segment of the slab caster as claimed in claim 1, wherein the slot plate is further provided with two water-blocking channels, the distribution direction of the water-blocking channels is the same as that of the cooling water channels, and the two water-blocking channels are respectively positioned at two opposite sides of the cooling water channels of the slot plate;
the channel that blocks water installs the water-blocking board, the water-blocking board is along vertical setting, the vertical both sides of water-blocking board with in the frid the cell wall interval of channel that blocks water sets up, the water-blocking board is kept away from one side of passageway with frid fixed connection, the water-blocking board is provided with crosses the water opening.
6. The on-line quenching device for the segment of the slab caster as claimed in claim 1, wherein the slot plate further comprises a vertical baffle plate disposed at an opening on one side of the length into which the cooling water is introduced and at an opening on the other side of the length.
7. The on-line quenching device for the segment of the slab casting machine according to claim 4, further comprising a cooling water source, wherein the cooling water source is injected into the distribution water tank through a water pump, and the water pump is configured to control and adjust the pressure and the flow rate of the cooling water flowing into the cooling water channel according to the actual reduction rate of the surface temperature of the cast slab so as to enable the reduction rate of the surface temperature of the cast slab to reach a preset rate.
8. The on-line quenching device for the segment of the slab caster as claimed in any one of claims 1 to 7, wherein said channel plates are each provided with at least two of said cooling water channels parallel to each other.
9. The on-line quenching device for the segment of the slab caster as claimed in any one of claims 1 to 7, wherein the water flow directions of the cooling water channels in the two trough plates belonging to the same group are opposite.
10. The on-line quenching device for the segment of the slab caster as claimed in claim 9, wherein the on-line quenching device for the segment of the slab caster is provided with at least two sets of the slotted plates, the cast slab sequentially passes through the passage formed by each set of the slotted plates, and the cooling water channels of two adjacent slotted plates on the same side of the passage have opposite water flow directions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221897375.9U CN218026217U (en) | 2022-07-22 | 2022-07-22 | Online quenching device for fan-shaped section of slab continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221897375.9U CN218026217U (en) | 2022-07-22 | 2022-07-22 | Online quenching device for fan-shaped section of slab continuous casting machine |
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| Publication Number | Publication Date |
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| CN218026217U true CN218026217U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221897375.9U Active CN218026217U (en) | 2022-07-22 | 2022-07-22 | Online quenching device for fan-shaped section of slab continuous casting machine |
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| CN (1) | CN218026217U (en) |
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- 2022-07-22 CN CN202221897375.9U patent/CN218026217U/en active Active
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