CN111495992A - High-pressure water descaling system and descaling method for hot-rolled bar - Google Patents
High-pressure water descaling system and descaling method for hot-rolled bar Download PDFInfo
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- CN111495992A CN111495992A CN202010389568.2A CN202010389568A CN111495992A CN 111495992 A CN111495992 A CN 111495992A CN 202010389568 A CN202010389568 A CN 202010389568A CN 111495992 A CN111495992 A CN 111495992A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 14
- 230000001050 lubricating effect Effects 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 9
- 238000004513 sizing Methods 0.000 claims description 6
- 239000012208 gear oil Substances 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000005098 hot rolling Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- Metal Rolling (AREA)
Abstract
A high-pressure water descaling system and a descaling method for a hot-rolled bar comprise two sets of descaling systems, namely a post-heating furnace descaling system and a rolling line descaling system; the rear descaling box of the heating furnace is provided with a descaling box after the heating furnace is discharged from a roller way, steel billets are descaled on four sides, a plurality of rows of waterproof chains are added to prevent water splashing facilities towards the door of the heating furnace, and a bidirectional blank feeding and discharging design is adopted during the design of an inlet and outlet guide of the descaling box, so that the backing and collision avoidance are effectively avoided; the rolling line descaling system is similar to a heating furnace post-descaling system and comprises a butterfly valve, an automatic cleaning filter, a pressure sensor, an electromagnetic flowmeter, a water pressure gauge, an expansion joint, a high-pressure pump, a high-pressure hose, a high-pressure single stop valve, a descaling injection valve, a medium rolling descaling box, a finish rolling descaling box and a reducing diameter descaling box; the invention adopts 2 sets of descaling systems, and has the advantages of large water supply capacity, good descaling effect, low investment, low equipment operation cost, small equipment maintenance amount, low maintenance cost and the like.
Description
Technical Field
The invention relates to the technical field of hot-rolled bar production, in particular to a high-pressure water descaling system and a descaling method for a hot-rolled bar.
Background
On a hot rolling bar production line, a steel billet is rapidly oxidized in a heating furnace under a high temperature condition, and a layer of primary oxidized iron sheet with the thickness of 7.5-15 mu m is formed on the surface of the steel billet. Meanwhile, in the transportation and rolling processes of the heated billet, the surface of the billet can form secondary iron scale with moisture and oxygen in the air. Therefore, the scale on the surface of the billet must be removed before the billet is rolled, otherwise, a large amount of the scale with higher hardness is attached to the surface of the billet, so that the deformation resistance of the billet is increased, and the rolling cost and the power consumption are increased. Meanwhile, the residual iron scale can be pressed into the surface of the billet in the rolling process, so that the defects of iron scale pressing, pockmarks, scars and the like are formed, and the surface quality of the billet is seriously influenced. The high-pressure water descaling technology for removing the scale by utilizing the mechanical impact force of high-pressure water is the most popular and effective method in the prior art. Therefore, at present, in a bar production line, a plurality of descaling processes are divided into furnace descaling and rolling line descaling. However, the existing descaling system in production has many problems, such as complex structure, high cost, difficult maintenance, poor descaling effect, etc. Therefore, the surface quality of the hot rolled steel bar needs to be improved, and an efficient and stable high-pressure water descaling system needs to be designed.
Disclosure of Invention
The invention aims to provide an efficient and stable high-pressure water descaling system and a descaling method.
The technical scheme of the invention is as follows:
a high-pressure water descaling system for hot-rolled bars comprises two sets of descaling systems, namely a rear heating furnace descaling system and a rolling line descaling system; the rear descaling system of the heating furnace comprises a butterfly valve, an automatic cleaning filter, a pressure sensor, an electromagnetic flowmeter, a water pressure meter, an expansion joint, a high-pressure pump, a high-pressure hose, a high-pressure single stop valve, a descaling injection valve and a rear descaling box of the heating furnace; the high-pressure pump supplies pressure to the high-pressure pump through a pressure switch, a pneumatic triple piece, a quick exhaust valve and a cylinder, and meanwhile, the high-pressure pump is also provided with a lubricating system which comprises a gear oil pump, an oil filter, a stop valve, a cooler and an oil pressure sensor and continuously supplies a lubricating effect to the high-pressure pump; the rear descaling box of the heating furnace is provided with a descaling box after the heating furnace is discharged from a roller way, steel billets are descaled on four sides, a plurality of rows of waterproof chains are added to prevent water splashing facilities towards the door of the heating furnace, and a bidirectional blank feeding and discharging design is adopted during the design of an inlet and outlet guide of the descaling box, so that the backing and collision avoidance are effectively avoided; the descaling box has the structure that an upper semicircular ring and a lower semicircular ring are separated, the upper semicircular ring can be driven by an electric elevator to move up and down, the lifting displacement is automatically controlled by a steel signal, and the lower semicircular descaling ring is connected by a hard pipe and is directly fixed; the descaling box of the heating furnace is provided with two groups of descaling rings, the descaling rings are provided with a nozzle anti-collision guide device and blank return guide anti-collision, and the two groups of descaling rings are independently switched and automatically switched; the rolling line descaling system is similar to a heating furnace post-descaling system and comprises a butterfly valve, an automatic cleaning filter, a pressure sensor, an electromagnetic flowmeter, a water pressure gauge, an expansion joint, a high-pressure pump, a high-pressure hose, a high-pressure single stop valve, a descaling injection valve, a medium rolling descaling box, a finish rolling descaling box and a reducing size descaling box.
The descaling system of the heating furnace is provided with 4 plunger type high-pressure pumps (3 for 1 spare), 3 frequency converters, 3P L C control cabinets, ten power distribution cabinets, ten self-cleaning filters (1 for 1 spare), ten sets of descaling boxes (with 2 sets of descaling rings) and 2 sets of self-cleaning filters (1 for spare), a rolling line descaling system is provided with 3 plunger type high-pressure pumps (2 for 1 spare), ten 3 frequency converters, 1P L C control cabinets, one power distribution cabinet, 2 sets of self-cleaning filters (1 for spare), ten 3 sets of descaling boxes, 1 descaling pump working water supply is independently adopted for medium rolling, two descaling points of finish rolling and KOCKS jointly adopt 1-combination descaling pump working water supply, the opening and closing of each point are controlled by 2 descaling injection valves, the rest 1 pump is used as a standby pump, and the descaling system can be manually switched to any standby on two sides through 2 high-pressure stop valves.
A high-pressure water descaling method for a hot-rolled bar comprises the following process steps:
(1) the descaling box behind the heating furnace descales, sets up 12~20 sets of descaling nozzles, and each face sets up 3~5 nozzles, and jet distance 120~125mm, anteversion angle 10~ 15.
(2) And (3) descaling at the medium rolling descaling point, setting two sets of descaling rings, wherein the number of spray nozzles is 12, the spray distance is 110-120 mm, and the forward inclination angle is 10-15 degrees.
(3) And (3) carrying out finish rolling descaling point descaling, designing a set of descaling rings, wherein the number of nozzles is 6, the spraying distance is 100-110 mm, and the forward inclination angle is 15 degrees.
(4) A set of descaling rings is designed for descaling of the KOCKS descaling points, the number of nozzles is 6, the spraying distance is 100-110 mm, and the forward inclination angle is 10-15 degrees.
The rear descaling of the heating furnace adopts large flow and large striking force, the pressure is 25-29 Mpa, and the good descaling effect is ensured; and the descaling at the three positions of the middle rolling inlet, the pre-finish rolling inlet and the KOCKS inlet adopts small flow and small striking force, and the pressure is 13-16 Mpa, so that the descaling effect is good.
The working principle of the invention is as follows:
a water source enters the automatic cleaning filter through a butterfly valve to filter impurities in water, so that the quality of the supplied water is ensured to be within a specified range; the descaling principle is that on one hand, the scale on the surface is mechanically descaled by utilizing the rapid cooling of water and the temperature difference between the scale and the billet body, and on the other hand, the scale on the surface of the billet is removed by the striking force generated by high-pressure water. The working water source (0.2-0.6 MPa) is connected to the self-cleaning filter through the water inlet main valve and then distributed to each high-pressure pump through the low-pressure main pipeline from the outlet of the filter. The water inlet branch pipes of the high-pressure pumps are connected to the high-pressure pumps through the low-pressure butterfly valves and the expansion joints, and due to the reciprocating motion of the high-pressure pumps and the opening and closing of the liquid inlet and outlet valves, water on the high-pressure pipelines is subjected to the resistance of the nozzles, and the water on the pipelines establishes pressure, and the high-pressure water can only pass through the high-pressure one-way stop valve and the high-pressure pipelines to the descaling rings and is ejected to steel billets through the nozzles to remove oxide layers on the surfaces of the steel billets because the check valves.
The invention has the beneficial effects that: 2 sets of descaling systems are adopted, and 4 descaling points are counted, so that the descaling system has the advantages of large water supply capacity, good descaling effect, low investment, low equipment operation cost, small equipment maintenance amount, low maintenance cost and the like; the high-pressure water descaling system and the descaling method for the hot-rolled bar have high intelligent degree, and are safe, stable and reliable.
Drawings
FIG. 1 is a flow chart of a hot rolled bar high pressure water descaling system and a descaling method.
FIG. 2 is a schematic diagram of the connection of the descaling system at the rear of the heating furnace.
FIG. 3 is a schematic diagram of the equipment connection of the rolling line descaling system.
FIG. 4 is a view showing the structure of a rear descaling box of a heating furnace.
FIG. 5 is a schematic diagram showing the separation of the descaling rings in the descaling box after the heating furnace.
In the figure: 1-butterfly valve, 2-automatic cleaning filter, 3-pressure sensor, 4-electromagnetic flowmeter, 5-water pressure gauge, 6-expansion joint, 7-high pressure pump, 8-high pressure hose, 9-high pressure single stop valve, 10-descaling injection valve, 11-heating furnace rear descaling box, 12-high pressure valve, 13-medium rolling descaling box, 14-fine rolling descaling box, 15-reducing sizing descaling box, 71-pressure switch, 72-pneumatic triple piece, 73-quick exhaust valve, 74-cylinder, 75-gear oil pump, 76-oil filter, 77-stop valve, 111-waterproof chain, 112-descaling ring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
A high-pressure water descaling system for hot-rolled bars comprises two sets of descaling systems, namely a rear heating furnace descaling system and a rolling line descaling system; the rear descaling system of the heating furnace comprises a butterfly valve (1), an automatic cleaning filter (2), a pressure sensor (3), an electromagnetic flowmeter (4), a water pressure meter (5), an expansion joint (6), a high-pressure pump (7), a high-pressure hose (8), a high-pressure single stop valve (9), a descaling injection valve (10) and a rear descaling box (11) of the heating furnace; the high-pressure pump supplies pressure to the high-pressure pump through a pressure switch (71), a pneumatic triple piece (72), a quick exhaust valve (73) and a cylinder (74), and meanwhile, the high-pressure pump is also provided with a lubricating system which comprises a gear oil pump (75), an oil filter (76), a stop valve (77), a cooler (78) and an oil pressure sensor and continuously supplies a lubricating effect to the high-pressure pump; the rear descaling box of the heating furnace is provided with a descaling box after the heating furnace is discharged from a furnace roller way, the four sides of a billet are descaled, and the descaling speed, pressure and flow of the descaling box of the heating furnace can be set according to the sizes of different blanks; the rear descaling box of the heating furnace is optimally arranged by adopting an internal baffle structure, a plurality of rows of waterproof chains (111) are added to prevent water splashing facilities towards the door of the heating furnace, and the two-way feeding and discharging design is adopted during the inlet and outlet guide design of the descaling box, so that the backing and collision avoidance are effectively avoided; the structure of a descaling ring (112) of the descaling box is that an upper semi-circular ring and a lower semi-circular ring are separated, the upper semi-circular ring can be driven by an electric lifter to move up and down, the lifting displacement is automatically controlled by a steel signal, and the lower semi-circular descaling ring is connected by a hard pipe and is directly fixed; the descaling box of the heating furnace is provided with two groups of descaling rings, the descaling rings are provided with a nozzle anti-collision guide device and blank return guide anti-collision, and the two groups of descaling rings are independently switched and automatically switched; the rolling line descaling system comprises a butterfly valve (1), an automatic cleaning filter (2), a pressure sensor (3), an electromagnetic flowmeter (4), a water pressure meter (5), an expansion joint (6), a high-pressure pump (7), a high-pressure hose (8), a high-pressure single stop valve (9), a descaling injection valve (10), a high-pressure valve (12), a medium rolling descaling box (13), a finish rolling descaling box (14) and a reducing and sizing descaling box (15); the high-pressure pump supplies pressure to the high-pressure pump through a pressure switch (71), a pneumatic triple piece (72), a quick exhaust valve (73) and a cylinder (74), and meanwhile, the high-pressure pump is also provided with a lubricating system which comprises a gear oil pump (75), an oil filter (76), a stop valve (77), a cooler (78) and an oil pressure sensor and continuously supplies a lubricating effect to the high-pressure pump;
example 1:
the method comprises the steps of heating a 280mm × 280mm × 6000mm square steel billet through a heating furnace, then passing the heated square steel billet through a furnace rear high-pressure water descaling device, removing scale on the surface of the billet, feeding the descaled square steel billet into a front 6 frame roughing mills which are horizontally and alternately arranged for torsion-free micro-tension rolling, then feeding the descaled square steel billet into a middle mill input roller way, arranging a high-pressure water descaling device set in front of the middle mill for removing secondary scale, cutting the head and the tail of the descaled square steel billet through a 1# flying shear, feeding the descaled square steel billet into a 6 frame middle mill which is horizontally and alternately arranged for torsion-free micro-tension rolling, arranging a high-pressure water descaling device set in front of a pre-finishing mill for removing secondary scale, feeding the rolled billet out of the middle mill into a 4 frame pre-finishing mill which is horizontally and alternately arranged for torsion-free micro-tension rolling after the head and the tail of the rolled billet are removed, conveying the rolled billet through the 2# flying shear after descaling, feeding the descaled square steel billet into a 4 frame pre-finishing mill for torsion-rolling, and the rolling of the descaled billet, and the rolled billet after the torsion-free micro-tension rolling, and the sizing.
The descaling system of the heating furnace is provided with 4 plunger type high-pressure pumps (3 for 1 spare), 3 frequency converters, 3P L C control cabinets, ten power distribution cabinets, ten self-cleaning filters (1 for 1 spare), ten sets of descaling boxes (with 2 sets of descaling rings) and 2 sets of self-cleaning filters (1 for spare), a rolling line descaling system is provided with 3 plunger type high-pressure pumps (2 for 1 spare), ten 3 frequency converters, 1P L C control cabinets, one power distribution cabinet, 2 sets of self-cleaning filters (1 for spare), ten 3 sets of descaling boxes, 1 descaling pump working water supply is independently adopted for medium rolling, two descaling points of finish rolling and KOCKS jointly adopt 1-combination descaling pump working water supply, the opening and closing of each point are controlled by 2 descaling injection valves, the rest 1 pump is used as a standby pump, and the descaling system can be manually switched to any standby on two sides through 2 high-pressure stop valves.
The process comprises the following steps:
(1) the descaling box at the back of the heating furnace descales, 20 sets of descaling nozzles are arranged, 5 nozzles are arranged on each surface, the spraying distance is 125mm, and the forward inclination angle is 15 degrees.
(2) And (2) descaling at the medium rolling descaling point, arranging two sets of descaling rings, designing 3 nozzles on each surface of each rectangular structural ring, and totally 12 nozzles (3 nozzles are designed on each surface of each rectangular structural ring, and totally 12 nozzles in an annular structure are distributed), wherein the spraying distance is 120mm, and the forward inclination angle is 15 degrees.
(3) And (3) carrying out finish rolling descaling point descaling, designing a set of descaling rings, wherein the number of nozzles is 6, the spraying distance is 110 mm, and the forward inclination angle is 15 degrees.
(4) A set of descaling rings is designed for descaling at the KOCKS descaling point, the number of nozzles is 6, the spraying distance is 110 mm, and the forward inclination angle is 15 degrees.
Example 2:
the method comprises the steps of heating a square steel billet with the size of 150mm × 150mm × 12000mm by a heating furnace, then passing the square steel billet through a high-pressure water descaling device behind the furnace, removing scale on the surface of the steel billet, feeding the steel billet after descaling into a front 6 rough rolling mills which are arranged horizontally and alternately for non-torsion micro-tension rolling, then feeding the steel billet into an input roller way of a middle rolling mill through ground, arranging a high-pressure water descaling device set in front of the middle rolling mill for removing secondary scale, performing head cutting and tail cutting by a 1# flying shear after secondary descaling, feeding the rolled piece into a 6 middle rolling mills which are arranged horizontally and alternately for non-torsion micro-tension rolling, arranging a high-pressure water descaling device set in front of a pre-finishing rolling mill for removing secondary scale, feeding the rolled piece out of the middle rolling mill into a water cooling box for cooling according to process requirements, conveying the rolled piece by a roller way, performing head cutting and tail cutting by the 2# flying shear after descaling, feeding the rolled piece into a 4 pre-rolling mill which is arranged horizontally and alternately for non-torsion micro-tension rolling, and rolling the rolled piece which comes out of the finishing mill from the finishing mill and enters a sizing mill for non-torsion micro-tension rolling by a sizing mill for non-torsion micro-tension rolling.
The process comprises the following steps:
(1) the descaling box at the back of the heating furnace descales, 12 sets of descaling nozzles are arranged, each surface is provided with 3 nozzles, the spraying distance is 120mm, and the forward inclination angle is 15 degrees.
(2) And (3) descaling at a medium-rolling descaling point, arranging two sets of descaling rings, distributing 12 nozzles in an annular structure, wherein the spraying distance is 120mm, and the forward inclination angle is 15 degrees.
(3) And (3) carrying out finish rolling descaling point descaling, designing a set of descaling rings, wherein the number of nozzles is 6, the spraying distance is 110 mm, and the forward inclination angle is 15 degrees.
(4) A set of descaling rings is designed for descaling at the KOCKS descaling point, the number of nozzles is 6, the spraying distance is 110 mm, and the forward inclination angle is 15 degrees.
Claims (2)
1. The utility model provides a hot rolling rod water under high pressure descaling system which characterized in that: the device comprises two sets of descaling systems, namely a rear heating furnace descaling system and a rolling line descaling system; the rear descaling system of the heating furnace comprises a butterfly valve, an automatic cleaning filter, a pressure sensor, an electromagnetic flowmeter, a water pressure meter, an expansion joint, a high-pressure pump, a high-pressure hose, a high-pressure single stop valve, a descaling injection valve and a rear descaling box of the heating furnace; the high-pressure pump supplies pressure to the high-pressure pump through a pressure switch, a pneumatic triple piece, a quick exhaust valve and a cylinder, and is also provided with a lubricating system, wherein the lubricating system comprises a gear oil pump, an oil filter, a stop valve, a cooler and an oil pressure sensor and continuously supplies a lubricating effect to the high-pressure pump; the rear descaling box of the heating furnace is provided with a descaling box for four-side descaling of the billet after the heating furnace is discharged from the furnace roller way; the descaling box is additionally provided with a plurality of rows of waterproof chains to prevent water splashing facilities towards the door of the heating furnace, and the two-way feeding and discharging design is adopted during the design of the inlet and outlet guides of the descaling box to effectively avoid back collision; the descaling box has the structure that an upper semicircular ring and a lower semicircular ring are separated, the upper semicircular ring can be driven by an electric elevator to move up and down, the lifting displacement is automatically controlled by a steel signal, and the lower semicircular descaling ring is connected by a hard pipe and is directly fixed; the rolling line descaling system comprises a butterfly valve, an automatic cleaning filter, a pressure sensor, an electromagnetic flowmeter, a water pressure meter, an expansion joint, a high-pressure pump, a high-pressure hose, a high-pressure single stop valve, a descaling injection valve, a medium rolling descaling box, a finish rolling descaling box and a reducing sizing descaling box.
2. A method for descaling a hot-rolled bar by high-pressure water is characterized by comprising the following process steps:
(1) descaling by a descaling box at the back of the heating furnace, arranging 12-20 sets of descaling nozzles, arranging 3-5 nozzles on each surface, wherein the spraying distance is 120-125 mm, and the front inclination angle is 10-15 degrees;
(2) descaling at a medium-rolling descaling point, and arranging two sets of descaling rings, wherein the number of nozzles is 12, the spraying distance is 110-120 mm, and the forward inclination angle is 10-15 degrees;
(3) carrying out finish rolling descaling point descaling, and designing a set of descaling rings, wherein the number of nozzles is 6, the spraying distance is 100-110 mm, and the forward inclination angle is 15 degrees;
(4) a set of descaling rings is designed for descaling of the KOCKS descaling points, the number of nozzles is 6, the spraying distance is 100-110 mm, and the forward inclination angle is 10-15 degrees.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517509A (en) * | 2020-12-09 | 2021-03-19 | 北京机电研究所有限公司 | Device for removing oxide skin on two end surfaces of hot bar |
| CN113877969A (en) * | 2021-08-27 | 2022-01-04 | 上海西重所重型机械成套有限公司 | Emulsion high-pressure descaling and liquid supply pump set with self-cleaning filter |
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