CN108393363A - A kind of hot rolling slab high-pressure aerial fog descaling device and method - Google Patents
A kind of hot rolling slab high-pressure aerial fog descaling device and method Download PDFInfo
- Publication number
- CN108393363A CN108393363A CN201710064816.4A CN201710064816A CN108393363A CN 108393363 A CN108393363 A CN 108393363A CN 201710064816 A CN201710064816 A CN 201710064816A CN 108393363 A CN108393363 A CN 108393363A
- Authority
- CN
- China
- Prior art keywords
- water
- air
- pressure
- valve
- pneumatic operated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
A kind of hot rolling slab high-pressure aerial fog descaling device and method, water pump is connected with the water inlet of upper and lower nozzle respectively by collector pipe, water inlet pneumatic operated valve, Water flow adjusting valve, hydraulic gage, air compressor machine is connected with the air inlet of upper and lower nozzle respectively by gas collecting tube, air inlet pneumatic operated valve, air-flow adjustable valve, barometer, and upper and lower nozzle, inclination are fixed on upper and lower holder.Air compressor machine starts the compressed air generated and is flowed into upper and lower nozzle after gas collecting tube and air inlet pneumatic operated valve, air-flow adjustable valve, barometer；The high pressure water that water pump generates flows into after collector pipe and water inlet pneumatic operated valve, Water flow adjusting valve, hydraulic gage in upper and lower nozzle, high pressure water smashes atomization in upper and lower nozzle by compressed air, the high-pressure aerial fog of formation is sprayed onto the upper and lower surface of steel billet, realizes the de-scaling of steel billet upper and lower surface.The present invention can effectively remove billet surface once oxidation iron sheet, convenient for measuring steel billet breaking down temperature, and reduce roll wear, improve plate surface quality.
Description
Technical field
The invention belongs to steel rolling process field more particularly to a kind of hot rolling slab high-pressure aerial fog descaling device and its de-scalings
Method.
Background technology
Steel will remove the iron scale (also known as de-scaling) on surface before hot rolling, and current main descaling method has：It is high
Press water de-scaling, mechanical descaling and chemical de-scaling.Wherein high-pressure water descaling is one of common methods, i.e., is mapped to high pressure water jets red-hot
Steel surface, the iron scale on surface is cracked rapidly because Partial Rapid-cold is shunk, and water penetrates into crack, causes iron scale quick-fried
It splits, warpage from matrix until falling off, blowing away.Aerosol cooling technology is mainly used for solidification shell cooling and after steel hot rolling rolls
It is cooling, main feature：First, high-pressure aerial fog is ejected on steel plate, the steam film of surface of steel plate can be penetrated, forms nuclear boiling；Two
It is that the heat of vaporization of aerosol blending agent is much larger than the specific heat of water；Third, water consumption is few, cooling capacity is strong.
Document " a kind of applied analysis of 1780mm hot rollings high-pressure water descaling system " (《Fluid Transmission and Control》,2014,65
(4) .42-44) and " optimization of Ji 2500 producing line high-pressure water descaling system of steel " (《Shandong metal》, 2015,37 (3), 65-66),
Using high pressure water as de-scaling medium, common disadvantage is that the cooling capacity of simple water is less than aerosol, therefore can only use big
Flow, big pressure water can be only achieved more satisfied scale removal effect.
Patent publication No. CN203018474U is disclosed " slab de-scaling processing unit when a kind of hot-strip roughing ", including
Positive de-scaling collector pipe with nozzle makes de-scaling catchment in the both ends of positive de-scaling collector pipe setting band nozzle de-scaling collector pipe
The nozzle needle of pipe is to de-scaling blind area.Determine that de-scaling collector pipe sprays according to de-scaling collector pipe nozzle spray angle and the width of blind area
Angle of the mouth with a distance from hot rolling slab side and with slab all directions.The patent lacks still using high pressure water as de-scaling medium
Point is that the cooling capacity of simple water is less than aerosol, therefore can only can be only achieved more satisfaction using the water of big flow, big pressure
Scale removal effect.Patent publication No. CN203955737U provides " a kind of hot-strip descaling system ", is heated by the way that strip is arranged
Device is just heated before strip enters descaling bath so that it is not necessary that big work(is arranged in the descaling bath first order circulatory system
Rate heat exchanger can reduce production cost.In addition, making the crackle bigger of belt steel surface iron scale by quickly heating, favorably
In follow-up Pickling Descaling.
Above-mentioned document and patent describe high-pressure water descaling and mechanical descaler and method respectively, but are not directed to and this
Invent related high-pressure aerial fog scale removal equipment and application method.
Invention content
The present invention is intended to provide a kind of once oxidation iron sheet for removing steel billet breaking down front surface, is reduced because of iron scale
In the presence of and influence thermometric effect, to improve hot rolling slab high-pressure aerial fog descaling device and its de-scaling side of plate surface quality
Method.
For this purpose, the technical solution that the present invention is taken is：
A kind of hot rolling slab high-pressure aerial fog descaling device, including collector pipe, water inlet pneumatic operated valve, Water flow adjusting valve, hydraulic pressure
Meter, top nozzle, De-scaling box, upper bracket, lower bracket, lower nozzle, air-flow adjustable valve, gas collecting tube, barometer, air inlet pneumatic operated valve,
Water pump, air compressor machine, water inlet pipe and air inlet pipe；Water pump by collector pipe and two water inlet pipes being connected on collector pipe respectively with it is upper
Nozzle is connected with the water inlet of lower nozzle, is respectively equipped on two water inlet pipes into water pneumatic operated valve, Water flow adjusting valve and hydraulic gage；
Air compressor machine is connected with the air inlet of top nozzle and lower nozzle respectively by gas collecting tube and two air inlet pipe being connected on gas collecting tube,
The gentle pressure meter of air inlet pneumatic operated valve, air-flow adjustable valve is respectively equipped in two air inlet pipe；Top nozzle inclination is fixed in upper bracket
Portion, upper bracket outside are equipped with De-scaling box, and lower nozzle inclination is fixed in the middle part of lower bracket, and lower bracket is fixed in roller bed frame.
The water outlet direction of the top nozzle of inclination arrangement and lower nozzle towards coming steel direction, the axis of top nozzle and lower nozzle with
Angle α between the upper and lower surface of steel billet is 70 °~85 °.
A kind of method of hot rolling slab high-pressure aerial fog descaling device, specific method are：
First ventilation, rear water flowing, i.e., first open air inlet pneumatic operated valve, air compressor machine, be then turned on into water operated pneumatic valve, water before de-scaling
Pump；
Air compressor machine start generate compressed air respectively enter two air inlet pipe by gas collecting tube, then pass sequentially through two into
It is flowed into top nozzle and lower nozzle after air inlet pneumatic operated valve, air-flow adjustable valve, barometer on tracheae；And the high pressure that water pump generates
Water respectively enters two water inlet pipes by collector pipe, then pass sequentially through water inlet pneumatic operated valve on two water inlet pipes, water flow is adjusted
It is flowed into top nozzle and lower nozzle after valve, hydraulic gage；
High pressure water is smashed by compressed air in top nozzle and lower nozzle, is atomized, and the high-pressure aerial fog of formation sprays, high pressure gas
Mist is sprayed onto the upper and lower surface of steel billet, and de-scaling starts, and tilts the high-pressure aerial fog of ejection and can blow away the iron oxide of steel billet upper surface loosening
Skin, lower surface iron scale then fall off by its own gravity；
De-scaling box stops the splashing of high-pressure aerial fog, iron scale, passes through the gentle flow control valve of regulating water flow regulating valve
Controlling the flow-rate ratio of high pressure water and compressed air, water flow is adjusted to 360~530L/min, and throughput is adjusted to 290~
410L/min ensures best scale removal effect；
During de-scaling, hydraulic pressure and air pressure are detected by hydraulic gage and air pressure meter respectively, pressure of supply water is controlled in 1~3MPa
Between, supply gas pressure controls between 0.2~0.8MPa；
De-scaling terminates, first water pump and water inlet pneumatic operated valve, rear to close air compressor machine and air inlet pneumatic operated valve.
Beneficial effects of the present invention are：
The present invention can be effectively removed the once oxidation iron sheet of billet surface, convenient for measuring the breaking down temperature of steel billet, carry
High-temperature measurement accuracy, while the abrasion of roll is reduced, improve the surface quality of steel plate.
Description of the drawings
Fig. 1 is high-pressure aerial fog descaling device installation condition schematic diagram；
Fig. 2 is upper and lower arrangement of nozzles schematic diagram.
In figure：Collector pipe 1, water inlet pneumatic operated valve 2, Water flow adjusting valve 3, hydraulic gage 4, top nozzle 5, De-scaling box 6, upper bracket
7, lower bracket 8, lower nozzle 9, air-flow adjustable valve 10, gas collecting tube 11, barometer 12, air inlet pneumatic operated valve 13, roller-way 14, water pump
15, air compressor machine 16, water inlet pipe 17, air inlet pipe 18, steel billet 19.Arrow indicates steel billet traffic direction in Fig. 2.
Specific implementation mode
As seen from Figure 1, hot rolling slab high-pressure aerial fog descaling device of the present invention, including collector pipe 1, water inlet pneumatic operated valve 2, flow
Adjustable valve 3, hydraulic gage 4, top nozzle 5, De-scaling box 6, upper bracket 7, lower bracket 8, lower nozzle 9, air-flow adjustable valve 10, gas collection
Pipe 11, barometer 12, air inlet pneumatic operated valve 13, water pump 15, air compressor machine 16, water inlet pipe 17 and air inlet pipe 18.
Water pump 15 by collector pipe 1 and two water inlet pipes 17 being connected on collector pipe 1 respectively with top nozzle 5 and lower nozzle
9 water inlet is connected, and is respectively equipped on two water inlet pipes 17 into water pneumatic operated valve 2, Water flow adjusting valve 3 and hydraulic gage 4.Air compressor machine
16 pass through gas collecting tube 11 and two air inlet pipe 18 being connected on gas collecting tube 11 air inlet with top nozzle 5 and lower nozzle 9 respectively
It is connected, air inlet pneumatic operated valve 13, air-flow adjustable valve 10 and barometer 12 is respectively equipped in two air inlet pipe 18.Top nozzle 5 tilts
It is fixed on the middle part of upper bracket 7, the outside of upper bracket 7 is covered with De-scaling box 6；Lower nozzle 9 tilts the middle part for being fixed on lower bracket 8,
Lower bracket 8 is fixed on 14 shelf of roller-way.
For guarantee scale removal effect, steel side is come in the water outlet direction of the top nozzle 5 of inclination arrangement and lower nozzle 9 towards steel billet 19
To the angle α between the 19 upper and lower surface of axis and steel billet of top nozzle 5 and lower nozzle 9 is 70 °~85 ° (see Fig. 2).
The specific method of hot rolling slab high-pressure aerial fog de-scaling of the present invention is：
First ventilation, rear water flowing, i.e., first open air inlet pneumatic operated valve 13 and air compressor machine 16, be then then turned on influent gas before de-scaling
Dynamic valve 2 and water pump 15.
The compressed air that air compressor machine 16 generates after starting respectively enters two air inlet pipe 18 by gas collecting tube 11, then leads to successively
Top nozzle 5 and lower nozzle 9 are flowed into after crossing the air inlet pneumatic operated valve 13 in two air inlet pipe 18, air-flow adjustable valve 10, barometer 12
It is interior；And the high pressure water that water pump 15 generates respectively enters two water inlet pipes 17 by collector pipe 1, then pass sequentially through two water inlet pipes 17
On water inlet pneumatic operated valve 2, separately flow into top nozzle 5 and lower nozzle 9 after Water flow adjusting valve 3 and hydraulic gage 4
High pressure water is smashed by compressed air in top nozzle 5 and lower nozzle 9, is atomized, and the high-pressure aerial fog of formation sprays, high pressure
Aerosol is sprayed onto the upper and lower surface of steel billet 19, and de-scaling starts, and tilts the high-pressure aerial fog of ejection and can blow away the loosening of 19 upper surface of steel billet
Iron scale, lower surface iron scale then falls off by its own gravity.
De-scaling box 6 stops the splashing of high-pressure aerial fog, iron scale, passes through 3 gentle flow-rate adjustment of regulating water flow regulating valve
Valve 10 controls the flow-rate ratio of high pressure water and compressed air, and water flow is adjusted in 360~530L/min, throughput is adjusted 290
~410L/min ensures best scale removal effect.
During de-scaling, hydraulic pressure and air pressure are detected by hydraulic gage 4 and barometer 12 respectively, pressure of supply water control 1~
Between 3MPa, supply gas pressure controls between 0.2~0.8MPa.
De-scaling terminates, first water pump 15 and water inlet pneumatic operated valve 2, rear to close air compressor machine 17 and air inlet pneumatic operated valve 13.
Claims (3)
1. a kind of hot rolling slab high-pressure aerial fog descaling device, which is characterized in that including collector pipe, water inlet pneumatic operated valve, water flow tune
Save valve, hydraulic gage, top nozzle, De-scaling box, upper bracket, lower bracket, lower nozzle, air-flow adjustable valve, gas collecting tube, barometer, into
Gas pneumatic operated valve, water pump, air compressor machine, water inlet pipe and air inlet pipe；Water pump passes through collector pipe and two water inlets being connected on collector pipe
Pipe is connected with the water inlet of top nozzle and lower nozzle respectively, is respectively equipped on two water inlet pipes into water pneumatic operated valve, water flow adjusting
Valve and hydraulic gage；Air compressor machine by gas collecting tube and two air inlet pipe being connected on gas collecting tube respectively with top nozzle and lower nozzle
Air inlet is connected, and the gentle pressure meter of air inlet pneumatic operated valve, air-flow adjustable valve is respectively equipped in two air inlet pipe；Top nozzle, which tilts, to be fixed
In the middle part of upper bracket, De-scaling box is equipped with outside upper bracket, lower nozzle inclination is fixed in the middle part of lower bracket, and lower bracket is fixed on roller-way
On frame.
2. hot rolling slab high-pressure aerial fog descaling device according to claim 1, which is characterized in that the top nozzle of inclination arrangement
Come steel direction, the angle α between top nozzle and the axis and the upper and lower surface of steel billet of lower nozzle with the water outlet direction direction of lower nozzle
It is 70 °~85 °.
3. a kind of method using hot rolling slab high-pressure aerial fog descaling device described in claim 1, it is characterised in that：
First ventilation, rear water flowing, i.e., first open air inlet pneumatic operated valve, air compressor machine, be then turned on into water operated pneumatic valve, water pump before de-scaling；
Air compressor machine starts the compressed air generated and respectively enters two air inlet pipe by gas collecting tube, then passes sequentially through two air inlet pipe
On air inlet pneumatic operated valve, air-flow adjustable valve, flow into top nozzle and lower nozzle after barometer；And the high pressure water warp that water pump generates
It crosses collector pipe and respectively enters two water inlet pipes, then pass sequentially through water inlet pneumatic operated valve, Water flow adjusting valve, the water on two water inlet pipes
It is flowed into top nozzle and lower nozzle after pressure meter；
High pressure water is smashed by compressed air in top nozzle and lower nozzle, is atomized, and the high-pressure aerial fog of formation sprays, high-pressure aerial fog spray
To the upper and lower surface of steel billet, de-scaling starts, and tilts the high-pressure aerial fog of ejection and can blow away the iron scale of steel billet upper surface loosening,
Lower surface iron scale then falls off by its own gravity；
De-scaling box stops the splashing of high-pressure aerial fog, iron scale, is controlled by the gentle flow control valve of regulating water flow regulating valve
The flow-rate ratio of high pressure water processed and compressed air, water flow are adjusted to 360~530L/min, and throughput is adjusted to 290~410L/
Min ensures best scale removal effect；
During de-scaling, hydraulic pressure and air pressure are detected by hydraulic gage and air pressure meter respectively, pressure of supply water control 1~3MPa it
Between, supply gas pressure controls between 0.2~0.8MPa；
De-scaling terminates, first water pump and water inlet pneumatic operated valve, rear to close air compressor machine and air inlet pneumatic operated valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064816.4A CN108393363A (en) | 2017-02-05 | 2017-02-05 | A kind of hot rolling slab high-pressure aerial fog descaling device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710064816.4A CN108393363A (en) | 2017-02-05 | 2017-02-05 | A kind of hot rolling slab high-pressure aerial fog descaling device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108393363A true CN108393363A (en) | 2018-08-14 |
Family
ID=63093437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710064816.4A Pending CN108393363A (en) | 2017-02-05 | 2017-02-05 | A kind of hot rolling slab high-pressure aerial fog descaling device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108393363A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109719146A (en) * | 2019-01-07 | 2019-05-07 | 东北大学 | A kind of efficient descaling method for great surface quality cut deal product |
| CN109719145A (en) * | 2019-01-07 | 2019-05-07 | 东北大学 | A kind of efficient descaling method for the raw iron scale of hot rolling short process producing line furnace |
| CN113787458A (en) * | 2021-08-30 | 2021-12-14 | 山东省冶金设计院股份有限公司 | Air-blowing descaling box device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10323710A (en) * | 1997-05-28 | 1998-12-08 | Sumitomo Metal Ind Ltd | Injection nozzle for liquid jet to remove scale and method of making thereof |
| CN202270743U (en) * | 2011-09-29 | 2012-06-13 | 鞍钢股份有限公司 | Aerial fog cooling device for hot-rolling board belt after being rolled |
| CN203409000U (en) * | 2013-08-20 | 2014-01-29 | 首钢总公司 | Device for removing oxide scales on surface of small size hot billet |
| CN204685675U (en) * | 2015-05-27 | 2015-10-07 | 鞍钢股份有限公司 | A kind of hot rolled strip gas-mist cooling device |
| CN204892573U (en) * | 2015-08-14 | 2015-12-23 | 河北钢铁股份有限公司 | Mill coil simply descale spray gun |
-
2017
- 2017-02-05 CN CN201710064816.4A patent/CN108393363A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10323710A (en) * | 1997-05-28 | 1998-12-08 | Sumitomo Metal Ind Ltd | Injection nozzle for liquid jet to remove scale and method of making thereof |
| CN202270743U (en) * | 2011-09-29 | 2012-06-13 | 鞍钢股份有限公司 | Aerial fog cooling device for hot-rolling board belt after being rolled |
| CN203409000U (en) * | 2013-08-20 | 2014-01-29 | 首钢总公司 | Device for removing oxide scales on surface of small size hot billet |
| CN204685675U (en) * | 2015-05-27 | 2015-10-07 | 鞍钢股份有限公司 | A kind of hot rolled strip gas-mist cooling device |
| CN204892573U (en) * | 2015-08-14 | 2015-12-23 | 河北钢铁股份有限公司 | Mill coil simply descale spray gun |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109719146A (en) * | 2019-01-07 | 2019-05-07 | 东北大学 | A kind of efficient descaling method for great surface quality cut deal product |
| CN109719145A (en) * | 2019-01-07 | 2019-05-07 | 东北大学 | A kind of efficient descaling method for the raw iron scale of hot rolling short process producing line furnace |
| CN109719146B (en) * | 2019-01-07 | 2020-11-17 | 东北大学 | Efficient descaling method for high-surface-quality medium plate product |
| CN109719145B (en) * | 2019-01-07 | 2021-04-06 | 东北大学 | Efficient descaling method for hot-rolled short-process production line furnace scale |
| CN113787458A (en) * | 2021-08-30 | 2021-12-14 | 山东省冶金设计院股份有限公司 | Air-blowing descaling box device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100475385C (en) | Method for cooling narrow surface of continuous casting foot roller section of low alloy steel plate blank of straight arc casting machine | |
| CN102553950B (en) | Cooling system for rolled stripe continuously-casting production line and control method thereof | |
| CN102424902B (en) | Vapor cooling system for use in offline heat treatment of thin medium and thick plates | |
| CN108393363A (en) | A kind of hot rolling slab high-pressure aerial fog descaling device and method | |
| US4424855A (en) | Method for cooling continuous casting | |
| CN101642780A (en) | Intermediate blank cooling system and cooling control technology | |
| CN110116135A (en) | A kind of Bar Wire Product product endless rolling production method | |
| JP7308358B2 (en) | Thick and medium plate production line and production method directly connected to an efficient two-stand double cutting line | |
| CN108356076A (en) | A kind of continuous casting billet milling method | |
| CN205393186U (en) | Secondary descaling device in rolling production of special steel | |
| CN1158762A (en) | Hot-rolling arrangement | |
| CN110090861A (en) | A kind of efficient endless rolling method of simple shape | |
| CN101700532B (en) | Method and device for removing inner surface oxidized iron sheet of steel pipe on line | |
| CN208728319U (en) | A kind of cooling ultra dense cold control device of TEMPERATURE FOR HOT STRIP LAMINAR | |
| CN110369519B (en) | Plate type control method for 500 MPa-level low-alloy high-strength steel plate in rolling process | |
| CN208991475U (en) | A kind of high pressure water dephosphorization apparatus of hot-strip | |
| CN203923298U (en) | A kind of injection cooling apparatus of long chi rail press quenching unit | |
| CN103111473B (en) | The online degreasing unit in a kind of six-roll cold mill ultra-wide Aluminum sheets surface | |
| CN205394293U (en) | Wet -type is thrown sand and is descaled equipment | |
| CN112570473B (en) | Thick plate super-long near-machine type cooling device after rolling and using method | |
| CN204892573U (en) | Mill coil simply descale spray gun | |
| CN204381117U (en) | A kind of device preventing straightening process scale pits | |
| CN105583737A (en) | Wet sand-throwing descaling equipment | |
| CN105964710A (en) | High pressure water descaling device and descaling method | |
| CN205995940U (en) | A kind of split adjustable hot rolled strip high pressure crystal's descaling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180814 |
|
| WD01 | Invention patent application deemed withdrawn after publication |