CN112275809B - Hot continuous rolling descaling striking device - Google Patents
Hot continuous rolling descaling striking device Download PDFInfo
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- CN112275809B CN112275809B CN202010939074.7A CN202010939074A CN112275809B CN 112275809 B CN112275809 B CN 112275809B CN 202010939074 A CN202010939074 A CN 202010939074A CN 112275809 B CN112275809 B CN 112275809B
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- descaling
- nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a hot continuous rolling descaling striking device, which comprises: the descaling manifold (1) comprises a plurality of spray nozzles (2), the spray nozzles (2) are arranged on the descaling manifold (1), are concentrated in the middle of the descaling manifold (1), and are uniformly arranged along the length direction of the descaling manifold (1); the center distance between any two adjacent nozzles of the plurality of nozzles (2) is 57 mm; the number of the plurality of nozzles (2) is 26; the spraying angle of any one of the plurality of nozzles (2) is 35 degrees; keeping the vertical line included angle between the axes of the nozzles (2) and the vertical line of the height surface of the roller way, and the vertical distance between the nozzles (2) and the hot continuous rolling steel plate surface is 90 mm.
Description
Technical Field
The invention relates to the field of hot continuous rolling strip steel production, in particular to a hot continuous rolling descaling striking device.
Background
The hot continuous rolling production line is generally provided with 3 descaling process points, namely, after-furnace descaling, rough descaling and fine descaling, and the fine descaling is taken as the last descaling process point, which is particularly critical to the influence of scale defects. The fine descaling system consists of a front row of collecting pipes and a rear row of collecting pipes, each row of collecting pipes is provided with an upper collecting pipe and a lower collecting pipe, and the upper collecting pipes and the lower collecting pipes are distributed on the upper surface and the lower surface of the steel plate. And descaling nozzles are distributed on the collecting pipe, the vertical distance between the descaling nozzles and the plate surface is 120 mm, and the included angle between the axes of the nozzles and the vertical line of the elevation surface of the roller way is 15 degrees. The descaling nozzles are obliquely and parallelly arranged, when viewed from the rolling direction, the descaling nozzles spray high-pressure water flow onto the surface of the steel plate at a spray angle of 30 degrees to carry out descaling, the distance between every two adjacent descaling nozzles is 65.5 mm, the overlap ratio of the striking areas of every two adjacent descaling nozzles is 1.08 mm, and the total descaling width is 1506.5 mm.
The hot continuous rolling strip steel often has scale defects in the production process, the defects influence the use effect of the subsequent process or customers, a great amount of quality objections are caused every year, and the quality image of the product is influenced.
The generation of scale defects is closely related to the descaling effect, and the most direct reason is that the descaling effect is poor, the scale cannot be completely removed, and the scale is pressed in the subsequent rolling process.
Disclosure of Invention
The invention aims to solve the problems that the descaling effect of hot continuous rolling strip steel is poor in the production process and the quality of the strip steel is influenced.
The applicant observes and finds that the main reasons of poor descaling effect are from two aspects of insufficient descaling hitting force and poor processing hitting overlap ratio in the production practice process. The applicant achieves the purposes of improving the descaling hitting force and ensuring the descaling hitting overlap ratio by redesigning structures such as reducing the height of the fine descaling header, adjusting the distance between descaling nozzles, adjusting the spraying angle and the like. Tests show that the descaling effect is obviously improved by the measures. In the production practice process, the applicant finds that the descaling effect is improved, and the condition that the head of the steel coil impacts a descaling header pipe to cause scrap steel or a descaling nozzle to be knocked to be inclined is increased; the scrap steel can cause a large amount of fault time to influence the smooth running of a rolling line, and when the descaling water nozzle is knocked to be inclined, if the defect is not found in time, the defect of large scale can be caused; in order to further improve the working stability of the descaling device, the steel billet is prevented from warping and impacting the nozzle by adding a descaling nozzle anti-collision plate, so that the aim of long-term stable operation of the descaling nozzle is fulfilled.
Based on the above findings and objects, the applicant has invented a hot continuous rolling descaling beating device comprising: the descaling header comprises a descaling header body and a plurality of spray nozzles, wherein the spray nozzles are arranged on the descaling header body, are concentrated in the middle of the descaling header body and are uniformly arranged along the length direction of the descaling header body; the center-to-center distance between any two adjacent nozzles of the plurality of nozzles is 57 millimeters; the number of the plurality of nozzles is 26; the spraying angle of any one of the plurality of nozzles is 35 degrees; keep the axis of a plurality of nozzles and roller way elevation perpendicular line contained angle in, the perpendicular distance of a plurality of nozzles and hot continuous rolling steel sheet face is 90 millimeters.
Further, the hot continuous rolling descaling striking device further comprises: the arc-shaped protective cover surrounds the nozzles, the cross section of the arc-shaped protective cover is arc-shaped, and the center of the arc is positioned on one side of the descaling header; the convex safety cover is equipped with: an injection hole; the plurality of nozzles are sunk in the arc-shaped protection cover, and the centers of the plurality of nozzles are aligned with the centers of the corresponding injection holes;
preferably, the water spray nozzle tops of the plurality of nozzles are 15 mm away from the convex surface of the circular arc-shaped protection cover.
Further, the hot continuous rolling descaling beating device further comprises: and one end of the at least one rib plate is connected with the descaling header, and the other end of the at least one rib plate is connected with the arc-shaped protective cover.
Further, the hot continuous rolling descaling striking device further comprises: a first connecting member, a second connecting member, the first connecting member being connected to one end of the descaling header; the second connecting member is connected to the other end of the descaling header.
Preferably, the first connecting part comprises a first pipe clamp and a first support seat; the second connecting part comprises a second pipe clamp and a second supporting seat; the first pipe clamp is arranged on the top plane of one end of the first supporting seat; the second pipe clamp is arranged on the top plane of one end of the second supporting seat; mounting holes are reserved in the centers of the first pipe clamp and the second pipe clamp; one end of the descaling header penetrates through the mounting hole of the first pipe clamp; the other end of the descaling header penetrates through the mounting hole of the second pipe clamp.
Because the above measures are modification of the local structure of the production equipment, the problems of great modification difficulty, long time consumption, high cost, unwillingness of the production plant to carry out the upgrading modification or no upgrading modification condition caused by the upgrading modification of the whole descaling system such as the improvement of the total descaling pressure, the descaling total water quantity and the like are avoided, so that the obvious effect is obtained at lower cost, the thickness of the scale on the surface of the strip steel is reduced by 3-5 microns on average, and the surface smoothness is improved. While the design is completed, the applicant also considers that the maintenance or the repair of equipment is convenient, and structurally designs the descaling header pipe and the spray nozzle which are convenient to disassemble and assemble.
The technical scheme has the following beneficial effects: the method has the advantages that the descaling hitting force is improved, the descaling hitting contact ratio is guaranteed, the descaling nozzle is kept operating stably for a long time through measures of comprehensively reducing the height of the fine descaling header, adjusting the distance between the descaling nozzles and the jet angle, increasing the anti-collision plate of the descaling nozzle and the like, and further the effects of improving production equipment with low cost, improving the descaling effect, operating stably and sustainably and conveniently maintaining or repairing are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a hot continuous rolling descaling beating device according to the present application.
FIG. 2 is a schematic diagram of the vertical line angle between the nozzle and the roller way elevation surface and the nozzle injection angle after the arc-shaped protection cover is removed.
FIG. 3 is a schematic view showing the effective scale removal width covered by the water jet sprayed from the nozzles.
FIG. 4 is a right side view of a hot continuous rolling descaling hammering apparatus of the present application.
FIG. 5 isbase:Sub>A schematic cross-sectional view A-A of FIG. 4 ofbase:Sub>A hot continuous rolling descaling beating apparatus according to the present application.
Fig. 6 is a schematic view of a circular arc-shaped protective cover.
Fig. 7 is a schematic view of a circular arc shaped protective cover with ribs.
Detailed Description
For convenience in describing the embodiments, the descaling nozzles are defined as being identical to the nozzles in the following description.
The present invention will be described in detail with reference to the accompanying drawings, and as shown in fig. 1, the applicant invented a hot continuous rolling descaling beating device comprising: the descaling header 1 comprises a descaling header 1 and a plurality of nozzles 2, wherein the plurality of nozzles 2 are arranged on the descaling header 1, are concentrated in the middle of the descaling header 1 and are uniformly arranged along the length direction of the descaling header 1; the center-to-center distance between any two adjacent nozzles of the plurality of nozzles 2 is 57 mm; the number of the plurality of nozzles 2 is 26; the spray angle of any one of the plurality of nozzles 2 is 35 degrees; keep the axis of a plurality of nozzles 2 and roller table elevation face perpendicular line contained angle in the time, the perpendicular distance of a plurality of nozzles 2 and hot continuous rolling steel sheet face is 90 millimeters.
The applicant observes and finds out in the production practice that the main reasons for the poor descaling effect are from the aspects of poor descaling hitting power and poor treatment hitting overlap ratio. The applicant reforms the existing descaling header pipe, fig. 2 is a sectional view with an arc-shaped protective cover 3 removed, and is used for marking the position of an included angle theta between the axis of a nozzle and the vertical line of the elevation surface of a roller way and the definition of the injection angle phi of water flow injected by the nozzle, fig. 3 is the definition of each parameter in the following contact ratio calculation formula 1, wherein C represents the position of the nozzle 2, a triangle pointed by B represents a triangular area formed by water flow injection injected by the nozzle, and H is the total descaling width; the vertical distance between the descaling nozzle 2 and the plate surface is reduced from h =120 mm to h =90 mm while keeping the included angle theta =15 degrees between the axis of the nozzle and the vertical line of the elevation surface of the roller way unchanged, so as to improve the striking force; when the vertical distance between the descaling nozzle 2 and the surface of the steel plate is 120 mm, the fine descaling impact force is 1.2 MPa, and when the vertical distance between the descaling nozzle 2 and the surface of the steel plate is 90 mm, the fine descaling impact force is 1.6 MPa, and is increased by 0.4 MPa; the descaling hitting power is improved. After the height of the descaling header pipe 1 is reduced, through a striking experiment, the actual striking depth is increased by about 1 mm according to the striking depth of the resin plate, the descaling striking force is improved, the striking force of the edge part of the injection surface of each water nozzle is close to that of the middle part, and the uniformity of the integral descaling surface is better.
The high-pressure water flow sprayed by the descaling nozzle is fan-shaped, and the smaller the distance between the descaling header 1 and the plate surface, the more concentrated the sprayed water flow and the larger the hitting force. However, the applicant found that the reduction of the height of the descaling header 1 causes no overlapping degree of the striking areas of the adjacent descaling nozzles 2, and an unscaled area exists in the width direction, so that the problem of overlapping degree of descaling striking needs to be solved synchronously.
In order to ensure the overlap ratio of the descaling hammering and the total descaling width, as shown in fig. 3, the applicant changes the center distance of any adjacent nozzle 2 from the original d =65.5 mm to d =57 mm, changes the single-row nozzle 2 from 24 to 26, and changes the spray angle of any nozzle 2 from the original phi =30 ° to phi =35 °. According to a contact ratio calculation formula:
wherein:
l is the descaled strike overlap ratio;
h is the vertical distance between the descaling nozzle 2 and the plate surface;
theta is an included angle (or an inclined angle) between the axis of the nozzle and the vertical line of the elevation surface of the roller way;
phi is the spray angle of the nozzle 2;
d is the center-to-center distance between any two adjacent nozzles of the plurality of nozzles 2;
after the change, the hitting contact ratio L of the nozzle is increased from 1 mm to 1.75 mm, the contact ratio is ensured, and the hitting force and the hitting uniformity are obviously improved. As shown in fig. 3, the total descaled width was H = d × 26=1482 mm, which still met the production requirements. The injection angle phi of the nozzle is changed from the original 30 degrees to 35 degrees, the total flow is kept unchanged, and the striking contact ratio is properly increased; the striking strength and the striking uniformity are obviously improved. The single spray nozzle spray surface becomes thick and uniform, the descaling amount of the intermediate billet in unit time is increased, and the descaling effect is improved.
Further, the hot continuous rolling descaling beating device further comprises: the arc-shaped protective cover 3 surrounds the nozzles, the cross section of the arc-shaped protective cover 3 is arc-shaped, and the center of the arc is positioned on one side of the descaling header pipe 1; the arc-shaped protection cover 3 is provided with: an injection hole 7; the plurality of nozzles 2 are sunk in the arc-shaped protection cover 3, and the centers of the plurality of nozzles 2 are aligned with the centers of the corresponding injection holes 7;
after the applicant solves the problems of striking force and striking overlap ratio through the design, in the production practice process, the applicant finds that the head of the hot coil box is tilted due to the overlong fixed tail when the hot coil box is uncoiled, and the nozzle is knocked to be askew when the hot coil box passes through the descaling box, so that the spray angle of the nozzle is influenced, and the descaling effect is reduced. The lower the height of the descaling header 1, the more likely it is to be struck by the raised billet, and therefore, it is necessary to deal with the problem that the nozzles 2 are struck. As shown in fig. 5, the applicant adopts the arc protection cover 3 shown in fig. 6 to protect the nozzle 2, only the jet hole 7 for spraying water and replacing the nozzle is reserved, the descaling nozzle 2 is sunken in one side of the concave surface of the arc protection cover 3, the descaling nozzle 2 jets water through the jet hole 7, the height of the convex surface of the arc protection cover 3 is slightly higher than that of the nozzle 2, meanwhile, the arc protection cover 3 does not influence the jet angle of the descaling nozzle 2, the anti-collision device of the descaling nozzle 2 effectively prevents the nozzle from being collided and influencing the descaling effect, a large amount of unnecessary downtime is reduced, and the operation rate is improved. After the anti-collision arc-shaped protective covers 3 are additionally arranged in front of each descaling nozzle 2, the descaling nozzles 2 are not deformed by collision, and the phenomenon that longitudinal strip descaling of the whole strip of the strip steel is not clean due to the fact that the descaling nozzles 2 are not deformed at angles is avoided, so that the replacement times of the descaling collecting pipes are reduced, and the quality risk is reduced.
Preferably, the water jet tops of the plurality of nozzles 2 are 15 mm away from the convex surface of the circular arc protection cover 3.
As shown in fig. 5, the applicant preferably designs the distance M from the top of the water spray nozzle of the nozzle 2 to the convex surface of the arc-shaped protection cover 3 to be 15 mm, so that the applicant can extend into the opening of the arc-shaped protection cover after the extension of the socket wrench connecting rod matched with the model is modified while the arc-shaped protection cover 3 does not affect the spray angle of the descaling nozzle 2, the descaling nozzle 2 sinking in the arc-shaped protection cover is convenient to disassemble and assemble, and bothbase:Sub>A tool andbase:Sub>A worker can conveniently contact the descaling nozzle 2 through the spray hole 7 of the arc-shaped protection cover 3 during disassembly and assembly, thereby ensuring the convenience and safety in disassembly and assembly. The purpose of reducing the height of the matched descaling header 1 and facilitating the installation is achieved.
Further, the hot continuous rolling descaling beating device further comprises: and one end of the at least one rib plate 4 is connected with the descaling header 1, and the other end of the at least one rib plate 4 is connected with the circular arc-shaped protective cover 3.
The connecting and fixing modes of the circular arc-shaped protective cover 3 and the descaling header 1 can be various, and the connecting modes listed in the real-time example do not limit the connecting mode of the circular arc-shaped protective cover 3 and the descaling header 1; for example, the four corners of the arc-shaped protective cover 3 can be respectively connected to the descaling header 1 through four columns; as shown in figure 7, one end of one or more rib plates 4 can be connected with the descaling header 1, the other end of the rib plates is connected with the circular arc-shaped protective cover 3, and the circular arc-shaped protective cover 3 is fixed more stably and can bear larger impact by using the connection mode of the plurality of rib plates 4.
Further, the hot continuous rolling descaling beating device further comprises: a first and a second connection parts 5 and 6, the first connection part 5 being connected to one end of the descaling header 1; the second connecting member 6 is connected to the other end of the descaling manifold 1.
As shown in fig. 1, in order to install the newly designed descaling manifold 1 and the related components thereof on the original descaling device, the applicant designs a first connecting part 5 and a second connecting part 6; one end of a first connecting part 5 is connected to one end of the descaling manifold 1, and the other end of the first connecting part 5 is fixed to the original descaling equipment; one end of a second connecting component 6 is connected with the other end of the descaling manifold 1, and the other end of the second connecting component 6 is fixed on the original descaling equipment; the descaling header 1 is fixed on the original descaling equipment through the first connecting part 5 and the second connecting part 6 according to the designated positions, so that the vertical distance between the nozzle 2 and the hot continuous rolling steel plate surface is 90 mm while the included angle between the axis of the nozzle 2 and the vertical line of the roller way elevation surface is kept.
The first connecting part 5 and the second connecting part 6 can be used for fixing the descaling manifold on the original descaling equipment in a hanging mode or other structural modes such as a supporting structure and the like; not all examples are given here, and other connecting structures are also intended to fall within the scope of the present application.
Preferably, said first connecting means 5 comprise a first pipe clamp and a first support seat; the second connecting part 6 comprises a second pipe clamp and a second supporting seat; the first pipe clamp is arranged at the top of one end of the first supporting seat; the second pipe clamp is arranged at the top of one end of the second supporting seat; mounting holes are reserved in the centers of the first pipe clamp and the second pipe clamp; one end of the descaling header 1 penetrates through the mounting hole of the first pipe clamp; the other end of the descaling manifold 1 passes through the mounting hole of the second pipe clamp.
The following description will be given by way of example of how the descaling nozzle and the related parts are connected to the original descaling device. The descaling collecting pipe is originally installed and fixed on the fine descaling box body, and after the height of the descaling collecting pipe is reduced, the installation position cannot be applied, so that the installation and fixing position needs to be searched outside the fine descaling box body again. And (4) determining the ground screw at two sides of the fine descaling box body according to field practice, and installing a support seat for installing and fixing the descaling header. Based on the reasons and the thinking, the applicant designs a pipe clamp and supporting seat structure for fixing the descaling header pipe 1, and specifically, a first pipe clamp is fixedly connected to the top of a first supporting seat; the second pipe clamp is fixedly connected to the top of the second supporting seat; a mounting hole is reserved on the first pipe clamp, and one end of the descaling header 1 passes through the mounting hole on the first pipe clamp and is connected with the first pipe clamp; a mounting hole is reserved on the second pipe clamp, and the other end of the descaling header pipe 1 penetrates through the mounting hole on the second pipe clamp and is connected with the second pipe clamp; foundation screws on two sides of the descaling box body are respectively connected with the bottoms of the first supporting seat and the second supporting seat; thereby realizing the fixation of the descaling header 1 and the relevant parts on the original descaling equipment according to the designated positions.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (6)
1. A hot continuous rolling descaling hammering device is characterized by comprising: a descaling header (1), a plurality of nozzles (2),
the plurality of nozzles (2) are arranged on the descaling collecting pipe (1), are concentrated in the middle of the descaling collecting pipe (1), and are uniformly arranged along the length direction of the descaling collecting pipe (1), wherein the descaling collecting pipe is a water pipe made of galvanized pipes;
the center distance between any two adjacent nozzles of the plurality of nozzles (2) is 57 mm;
the number of the plurality of nozzles (2) is 26;
the spraying angle of any one of the plurality of nozzles (2) is 35 degrees;
keeping the included angle between the axes of the nozzles (2) and the vertical line of the elevation surface of the roller way, and simultaneously keeping the vertical distance between the nozzles (2) and the surface of the hot continuous rolling steel plate to be 90 mm;
nozzle hit overlap ratio
Increasing the thickness from the original 1 mm to 1.75 mm;
so that the fine scale removal impact force is changed from 1.2 MPa to 1.6 MPa.
2. The hot continuous rolling descaling beating device according to claim 1, wherein the hot continuous rolling descaling beating device
The striking device further includes: the arc-shaped protection covers (3) surround the nozzles (2), and are made of heat-resistant steel;
the cross section of the arc-shaped protective cover (3) is arc-shaped, and the center of the arc is positioned on one side of the descaling header pipe (1);
the arc-shaped protection cover (3) is provided with: an injection hole (7);
the plurality of nozzles (2) are sunk in the arc-shaped protective cover (3), and the centers of the plurality of nozzles (2) are aligned with the centers of the corresponding injection holes (7).
3. A hot continuous rolling descaling hammering device according to claim 2, wherein the water jet tops of the plurality of nozzles (2) are 15 mm from the convex surface of the circular arc protection cover (3).
4. A hot continuous rolling descaling beating device according to claim 2, wherein the hot continuous rolling descaling beating device
The scale striking device further includes: at least one rib (4),
one end of the at least one rib plate (4) is connected with the descaling header (1), and the other end of the rib plate is connected with the arc-shaped protective cover (3).
5. A hot continuous rolling descaling beating device according to claim 1, 2, 3 or 4, wherein the hot continuous rolling descaling beating device further comprises: a first connecting part (5), a second connecting part (6),
the first connecting part (5) is connected to one end of the descaling header (1);
the second connecting part (6) is connected to the other end of the descaling manifold (1).
6. The hot continuous rolling descaling hammering apparatus according to claim 5,
the first connecting part (5) comprises a first pipe clamp and a first supporting seat;
the second connecting part (6) comprises a second pipe clamp and a second supporting seat;
the first pipe clamp is arranged on the top plane of one end of the first supporting seat;
the second pipe clamp is arranged on the top plane of one end of the second supporting seat;
mounting holes are reserved in the centers of the first pipe clamp and the second pipe clamp;
one end of the descaling header (1) penetrates through the mounting hole of the first pipe clamp;
the other end of the descaling header (1) penetrates through the mounting hole of the second pipe clamp.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010939074.7A CN112275809B (en) | 2020-09-09 | 2020-09-09 | Hot continuous rolling descaling striking device |
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| CN202010939074.7A CN112275809B (en) | 2020-09-09 | 2020-09-09 | Hot continuous rolling descaling striking device |
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| CN112275809B true CN112275809B (en) | 2023-03-31 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202377281U (en) * | 2011-11-30 | 2012-08-15 | 上海梅山钢铁股份有限公司 | Descaling device between hot rolling and finish rolling racks |
| CN202516863U (en) * | 2012-05-04 | 2012-11-07 | 重庆水泵厂有限责任公司 | High pressure water descaling device |
| CN202910090U (en) * | 2012-11-02 | 2013-05-01 | 广东韶钢松山股份有限公司 | Heavy and medium steel plate face water cutting device |
| CN103567239B (en) * | 2013-11-05 | 2015-09-30 | 中冶南方工程技术有限公司 | A kind of descaling spray nozzle protective device |
| CN204724595U (en) * | 2015-04-16 | 2015-10-28 | 宝山钢铁股份有限公司 | A kind of Hot Line finish rolling De-scaling box high pressure collector protective cover |
| CN105170665B (en) * | 2015-08-26 | 2017-05-17 | 武汉钢铁(集团)公司 | Method for removing iron oxide scale from surface of strip steel efficiently |
| CN109047347B (en) * | 2018-08-22 | 2024-02-06 | 中冶京诚工程技术有限公司 | Descaling header device |
| CN110624962B (en) * | 2019-10-17 | 2020-11-17 | 山东钢铁集团日照有限公司 | Method for improving structure of descaling box header and enhancing impact force |
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