CN212944672U - Hot continuous rolling mill capable of preventing scale formation - Google Patents
Hot continuous rolling mill capable of preventing scale formation Download PDFInfo
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- CN212944672U CN212944672U CN202021478221.7U CN202021478221U CN212944672U CN 212944672 U CN212944672 U CN 212944672U CN 202021478221 U CN202021478221 U CN 202021478221U CN 212944672 U CN212944672 U CN 212944672U
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Abstract
A hot continuous rolling mill capable of preventing scaling relates to the field of hot continuous rolling mills and comprises a side guide cross beam frame, a side guide transverse width adjusting hydraulic cylinder, a side guide main frame, a side guide width adjusting slide rail, a working roll bending hydraulic cylinder, a working roll contact shaft locking device, a mill inlet side guide, hot rolled strip steel placed on the hot continuous rolling mill capable of preventing scaling, a first side spraying pipeline, a second side spraying pipeline, a side nozzle and a side spraying hand valve, wherein the first side spraying pipeline is arranged outside the mill inlet side guide; through the special structure, the installation position and the pressure control of the side spray pipe spray head, the modes of material selection, the installation position, the pressure control and the like of the first side spray pipeline and the second side spray pipeline are adopted, so that the scale deposit pressing-in defect of the head part of the strip steel is reduced, the formation of dirt is reduced, the quality of a product is ensured, the labor force is reduced, and the economic benefit is obtained.
Description
Technical Field
The utility model relates to a hot continuous rolling mill field, in particular to prevent hot continuous rolling mill of scale deposit.
Background
In the rolling process of the hot rolling unit, the hot rolling unit is subjected to water vapor, smoke dust and high-temperature baking, so that rust and scale formation of iron scale on rolling mill equipment are easily caused, and are gradually accumulated and increased along with time, particularly, the water vapor and the smoke dust are accumulated and deposited on the surface of the equipment in the floating process of the water vapor and the smoke dust, and a formed combination of calcium carbonate and the iron scale is extremely firm; the rack is provided with a plurality of devices, the space is narrow, and in addition, the scale formation and the corrosion adhesion are firm, the cleaning is difficult and the cleaning effect is poor; at the moment of steel biting of a rolling mill, scales are removed from the surface of a strip steel due to vibration of the rolling mill and rolled by a roller to form pits or holes, the size of a removed object is about 10 × 20mm, scale scaling indentation defects of the scales are generated, the defects generally appear at 10-20 m of the head of the strip steel, and during cold rolling, the pits or holes can cause strip breakage accidents of the cold rolling mill, so that the strip steel is cut off at an acid rolling inlet, and consumption of cold rolled materials is influenced.
In order to solve the defects, an organizer cleans the rack by using a shovel and a hammer, and even cleans the rack by using a high-pressure water gun, so that although the defect degree is reduced, the number is not reduced, and the cleaning effect is not good; the scale deposit indentation defect becomes the difficult problem that influences the quality improvement of the hot-rolled strip steel product.
Due to the fact that the inlet space position of the rolling mill is narrow, the side guide needs to move back and forth and left and right when the rolling mill changes the rolls, the difficulty in selecting the installation position of the pipeline is high, the safety of steel biting of a belt head and the influence of side blowing sweeping on the temperature drop of the strip steel need to be considered, and in sum, the side spraying installation difficulty is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the hot continuous rolling mill capable of preventing scale formation is provided, the scale formation indentation defect of the oxide scales at the head of the strip steel is reduced, and the scale formation is reduced.
For solving the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a prevent hot continuous rolling mill of scale deposit, including side guide crossbeam frame, the side guide transversely transfers wide pneumatic cylinder, the side guide main frame, the side guide transfers wide slide rail, the work roll bending roller pneumatic cylinder, the work roll, work roll contact shaft locking device, the rolling mill entry side guide with place the hot rolling belted steel on the hot continuous rolling mill that prevents the scale deposit, still including setting up the outside first side of rolling mill entry side guide and spout the pipeline, the pipeline is spouted to the second side, side spout and side spray hand valve, first side spray pipeline is close to work roll one side and installs the side spout, the opposite side is connected with the one side that the hand valve was spouted to the side, the second side spray pipeline is connected to side spray hand valve opposite side.
Further, the material of the side nozzle comprises brass or pure copper.
Further, the nozzle of the side nozzle 11 is hollow between the inner and outer willow leaf shapes, the large willow leaf shape is the outer side, the small willow leaf shape is the inner side, the distance a5 between the large willow leaf shape and the small willow leaf shape is 9mm, the width a4 of the large willow leaf shape is 9mm, the height a2 of the large willow leaf shape is 29mm, the width a3 of the small willow leaf shape is 5mm, and the height a1 of the small willow leaf shape is 7 mm.
Furthermore, the side nozzle is arranged above one side of the hot rolled strip steel, the side nozzle sprays liquid to form a side spraying surface, the side spraying surface is vertical to the surface of the hot rolled strip steel, and the angle range of the side nozzle and the surface of the hot rolled strip steel is 30-60 degrees.
Furthermore, the angle between the side spray nozzles and the surface of the hot rolled strip is preferably 45 degrees, the height range of the side spray nozzles from the surface of the hot rolled strip is 50-100mm, and the distance range of the side spray nozzles from the edge of the hot rolled strip is 50-100 mm.
Furthermore, the first side spray pipeline adopts a stainless steel pipe with the inner diameter of 20mm and the wall thickness of 2.0-2.5 mm.
Furthermore, the second side spray pipeline adopts a high-pressure rubber hose with the model number of SN544 or NA25 1400.
Furthermore, an electromagnetic valve is arranged on one side of the second side spray pipeline, which is far away from the side spray hand valve.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
through the special structure, the installation position and the pressure control of the side spray pipe spray head, the material selection, the installation position and the pressure control of the first side spray pipeline and the second side spray pipeline and the like, the scale deposit pressing-in defect of the iron scale at the head of the strip steel is reduced, the consumption of raw materials is further saved, and the quality of products is ensured; the dirt formation is reduced, so that pits or holes formed on the surface of the strip steel by rolling through a roller are reduced, the strip breakage accident of a cold rolling mill and the strip steel cut at an acid rolling inlet are avoided, the product quality is ensured, and the economic benefit is obtained; the formation of dirt is reduced, thereby reducing the labor and labor costs of workers in cleaning the dirt.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a front view of the side-shooter nozzle of the present invention;
FIG. 4 is a cross-sectional side view of the center of the side-port nozzle of the present invention;
reference numerals in the drawings indicate: the method comprises the following steps of 1-side guide beam frame, 2-side guide transverse width adjusting hydraulic cylinders, 3-side guide main frames, 4-side guide width adjusting slide rails, 5-working roll bending hydraulic cylinders, 6-working rolls, 7-working roll contact shaft locking devices, 8-rolling mill inlet side guide, 9-first side spraying pipelines, 10-second side spraying pipelines, 11-side nozzles, 12-side spraying hand valves, 13-hot rolling strip steel, a5 is the distance between a large willow leaf shape and a small willow leaf shape, a4 is the width of the large willow leaf shape, a2 is the height of the large willow leaf shape, a3 is the width of the small willow leaf shape, and a1 is the height of the small willow leaf shape.
Detailed Description
The present application is further described with reference to the following drawings and examples.
Referring to fig. 1-2, the utility model provides a prevent hot continuous rolling mill of scale deposit, including side guide crossbeam frame 1, side guide horizontal width modulation pneumatic cylinder 2, side guide main frame 3, side guide width modulation slide rail 4, working roll bending hydraulic cylinder 5, working roll 6, working roll contact shaft locking device 7, mill entry side guide 8 and hot rolled strip 13 of placing on the hot continuous rolling mill of preventing scale deposit, still include the first side spray pipe way 9 that sets up in the outside of mill entry side guide 8, second side spray pipe way 10, side nozzle 11 and side spray hand valve 12, first side spray pipe way 9 is close to the installation of working roll 6 one side and is connected with side spout 11, the installation connection form is preferably 3/4 pipe thread connection, the opposite side of first side spray pipe way 9 is connected with side spray hand valve 12, side spray hand valve 12 opposite side is connected with second side spray pipe way 10, first side spray pipe way 9 and second side spray pipe way 10 are installed at the mill entry side guide edge, the original side guide equipment is not damaged.
Referring to fig. 3-4, in the above-mentioned apparatus, the material of the side nozzle 11 includes brass or pure copper, the nozzle of the side nozzle 11 is hollow between the inner and outer willow leaf shapes, the large willow leaf shape is the outer side, the small willow leaf shape is the inner side, the distance a5 between the large willow leaf shape and the small willow leaf shape is 9mm, the width a4 of the large willow leaf shape is 9mm, the height a2 of the large willow leaf shape is 29mm, the width a3 of the small willow leaf shape is 5mm, and the height a1 of the small willow leaf shape is 7 mm; the side nozzle 11 is arranged above one side of the hot rolled strip 13, the side nozzle 11 sprays liquid to form a side spraying surface, the side spraying surface is perpendicular to the surface of the hot rolled strip 13, the angle range between the side nozzle 11 and the surface of the hot rolled strip 13 is 30-60 degrees, preferably, the angle between the side nozzle 11 and the surface of the hot rolled strip 13 is 45 degrees, the distance between the side nozzle 11 and the surface of the hot rolled strip 13 ranges from 50 mm to 100mm, the distance between the side nozzle 11 and the edge of the hot rolled strip 13 ranges from 50 mm to 100mm, and the side nozzle 11 has a good water spraying and sweeping effect.
It should be pointed out that the pressure of the water system in the side nozzle 11 is 10-12bar, the water flow is sprayed out from the small willow leaf-shaped opening of the side nozzle 11, the formed side nozzle surface is fan-shaped, and the coverage angle of the fan-shaped surface is 30 degrees; the angle of the side nozzle 11 is adjustable between 30 degrees and 60 degrees, the sprayed water can cover the width of the whole strip steel, and the sprayed water can effectively sweep scale on the surface of the strip steel, so that the scale of the scale falling from the rack is prevented from falling to the strip steel to generate the press-in defect, and the surface quality of the hot-rolled strip steel can be effectively improved; water flow of side spout 11 is 6m3The circulating water is adopted, so that the water flow is small, and the influence on the uneven cooling of the strip steel is small; the arrangement of the position of the side nozzle 11 does not influence the replacement of the working roll, and the rubbing between the head of the strip steel and the water nozzle is avoided, so that the use is safe.
In the device, the side of the second side spray pipeline 10 far away from the side spray hand valve 12 is provided with an electromagnetic valve which is controlled by the hot rolled strip 13 and the working roll 6.
During operation, the side spraying hand valve 12 is opened, the head of the hot-rolled strip steel 13 enters a gap between the working rollers 6, the electromagnetic valve is opened at the moment, the water pressure of the first side spraying pipeline 9 and the second side spraying pipeline 10 is 10-12bar, the nozzle of the side spraying port 11 starts spraying water, due to the special structure of the side spraying pipe nozzle, scales such as ferric oxide falling on the surface of the strip steel can be swept through spraying water, the defect that the surface of a steel coil is pressed due to the fact that scales such as ferric oxide roll into the roller gap of the working rollers 6 are rolled into the steel coil is avoided, when the tail portion of the strip steel leaves the gap between the working rollers, the electromagnetic valve is closed, the side spraying port 11.
Claims (9)
1. The utility model provides a prevent hot continuous rolling mill of scale deposit, includes side guide crossbeam frame (1), the side guide transversely transfers wide pneumatic cylinder (2), side guide main frame (3), the side guide transfers wide slide rail (4), working roll bending hydraulic cylinder (5), working roll (6), working roll contact shaft locking device (7), rolling mill entry side guide (8) and place hot rolling strip steel (13) on the hot continuous rolling mill that prevents the scale deposit, its characterized in that: still including setting up at the outside first side of rolling mill entry side guide (8) and spouting pipeline (9), second side, side spout (11) and side spout hand valve (12), pipeline (9) are spouted to first side is close to work roll (6) one side and installs side spout (11), and one side of hand valve (12) is spouted to the opposite side connection side, pipeline (10) are spouted to the second side is spouted to the opposite side connection side of hand valve (12) is spouted to the side.
2. The hot continuous rolling mill for preventing scale formation according to claim 1, wherein: the side nozzle (11) is made of brass or pure copper.
3. A hot continuous rolling mill against scale according to claim 2, characterized in that: the nozzle of the side nozzle (11) is hollow between an inner layer of willow leaf shape and an outer layer of willow leaf shape, the large willow leaf shape is the outer side, the small willow leaf shape is the inner side, the distance (a5) between the large willow leaf shape and the small willow leaf shape is 9mm, the width (a4) of the large willow leaf shape is 9mm, the height (a2) of the large willow leaf shape is 29mm, the width (a3) of the small willow leaf shape is 5mm, and the height (a1) of the small willow leaf shape is 7 mm.
4. A hot continuous rolling mill against scale according to claim 3, characterized in that: the side nozzles (11) are arranged above one side of the hot-rolled strip steel (13), the side nozzles (11) spray liquid to form side spraying surfaces, the side spraying surfaces are perpendicular to the surface of the hot-rolled strip steel (13), and the angle range between the side spraying openings (11) and the surface of the hot-rolled strip steel (13) is 30-60 degrees.
5. The hot continuous rolling mill for preventing scale formation according to claim 4, wherein: the angle between the side nozzles (11) and the surface of the hot rolled strip steel (13) is 45 degrees.
6. A hot continuous rolling mill against scale according to claim 5, characterized in that: the height range of the side nozzles (11) from the surface of the hot-rolled strip steel (13) is 50-100mm, and the distance range of the side nozzles (11) from the edge of the hot-rolled strip steel (13) is 50-100 mm.
7. The hot continuous rolling mill for preventing scale formation according to claim 1, wherein: the first side spraying pipeline (9) is a stainless steel pipe with the inner diameter of 20mm and the wall thickness of 2.0-2.5 mm.
8. The hot continuous rolling mill for preventing scale formation according to claim 1, wherein: the second side spray pipeline (10) adopts a high-pressure rubber hose with the model number of SN544 or NA25 x 1400.
9. The hot continuous rolling mill for preventing scale formation according to claim 1, wherein: and an electromagnetic valve is arranged on one side of the second side spraying pipeline (10) far away from the side spraying hand valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021478221.7U CN212944672U (en) | 2020-07-23 | 2020-07-23 | Hot continuous rolling mill capable of preventing scale formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021478221.7U CN212944672U (en) | 2020-07-23 | 2020-07-23 | Hot continuous rolling mill capable of preventing scale formation |
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| Publication Number | Publication Date |
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| CN212944672U true CN212944672U (en) | 2021-04-13 |
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| CN202021478221.7U Active CN212944672U (en) | 2020-07-23 | 2020-07-23 | Hot continuous rolling mill capable of preventing scale formation |
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| CN (1) | CN212944672U (en) |
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- 2020-07-23 CN CN202021478221.7U patent/CN212944672U/en active Active
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