CN203565503U - Multifunctional cooling device for inclined jet streams in hot rolling process of medium plates - Google Patents
Multifunctional cooling device for inclined jet streams in hot rolling process of medium plates Download PDFInfo
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- CN203565503U CN203565503U CN201320637470.XU CN201320637470U CN203565503U CN 203565503 U CN203565503 U CN 203565503U CN 201320637470 U CN201320637470 U CN 201320637470U CN 203565503 U CN203565503 U CN 203565503U
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- 238000001816 cooling Methods 0.000 title abstract description 52
- 238000005098 hot rolling Methods 0.000 title abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims description 54
- 239000007924 injection Substances 0.000 claims description 54
- 239000000498 cooling water Substances 0.000 claims description 21
- 239000007921 spray Substances 0.000 claims description 17
- 230000003028 elevating effect Effects 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 abstract description 2
- 230000000171 quenching effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 238000009835 boiling Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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 utility model discloses a multifunctional cooling device for inclined jet streams in the hot rolling process of medium plates. The multifunctional cooling device is formed by arranging a first moving frame and a second moving frame side by side. The first moving frame is provided with eight sets of headers which are divided into the first set of headers, the second set of headers, the third set of headers, the fourth set of headers, the fifth set of headers, the sixth set of headers, the seventh set of headers and the eight set of headers. The second moving frame is provided with ten sets of headers which are divided into the ninth set of headers, the tenth set of headers, the eleventh set of headers, the twelfth set of headers, the thirteenth set of headers, the fourteenth set of headers, the fifteenth set of headers, the sixteenth set of headers, the seventeenth set of headers and the eighteenth set of headers. Each set of headers is composed of an upper header and a lower header. The eight upper headers of the first moving frame are all connected with a first lifting mechanism. The ten upper headers of the second moving frame are all connected with a second lifting mechanism. Water retaining rollers are respectively installed between the eight upper headers of the first moving frame. The design of the multifunctional cooling device can meet the requirements for accelerated cooling, ultrafast cooling, quenching and other cooling rates, is beneficial to production of alloy-reduction steel grades and development of new steel grades, and allows steel plates to be well formed.
Description
Technical field
The utility model relates to a kind of hot rolling cooling device, specifically a kind of inclination injection stream Multifunctional cold radiator cooler of hot rolled steel plate.
Background technology
Tradition laminar flow cooling device adopts elevated tank and U-shaped pipe or straight tube configuration, under the pressure-acting that cooling water produces at elevated tank, naturally flow out, except single-phase forced convertion region, transient boiling range, film boiling forced convertion district, little liquid accumulation regions and radiation and convection district are due to the existence of steam film between cooling water and surface of steel plate, and heat exchange efficiency is lower.Upper surface of steel plate cooling water flows in order along drop point radial motion and at steel plate traffic direction at short notice, and in cooling procedure subsequently, residual water is unordered flows, and causes in Cooling Process for Steel Plate Based inhomogeneous cooling even.Compare with conventional laminar flow, inclination injection stream is sprayed to surface of steel plate with certain angle and flow velocity under certain hydraulic pressure, when breaking up surface of steel plate steam film, make cooling water and surface of steel plate heat exchange, greatly improved heat exchange efficiency, and reduced to a great extent film boiling heat exchange region and transition boiling heat exchange region, effectively improved cooling uniformity.
The domestic report that also has hot rolled steel plate controlled cooling device, as the Chinese utility model patent applications of 2010 (application number is 201020502451.2), announced " a kind of control cooling device of hot rolled steel plate ", the controlled cooling device of this patent is comprised of Ultrafast cooling device and cooling facility for laminar flow.Ultrafast cooling device is comprised of lower collector pipe on 9 groups, upper header becomes 20 ° ~ 50 ° with vertical direction with lower collector pipe, to surface of steel plate, spray symmetrical high pressure high density current, upper header and lower collector pipe nozzle diameter 4mm ~ 6mm, the adjacent nozzle spacing of same collector is less than 30mm ~ 50mm, and each is arranged between nozzle and is interspersed.Described in this patent, the upper header of Ultrafast cooling device is forward injection, and the flush water of rear header injection stream flows to steel plate traffic direction, directly affect the heat exchange of front header cooling water and steel plate, and residual water is longer in the holdup time of upper surface of steel plate.The collector nozzle of cooling facility for laminar flow is straight pipe type, and whole controlled cooling device is the combination of inclination injection stream and laminar flow, and the inclination injection stream of unrealized all cooling zones is cooling.
The Chinese invention patent application of 2011 (application number is 201110408076.4) has been announced " thin specification pipe line steel cooling uniformity control method under a kind of ultrafast cold technique ", the upper lower collector pipe that the ultrafast cool equipment of this invention is equated by 9 groups of quantity forms, upper lower collector pipe is symmetrical, 0.8 meter of every group of collector, 7.2 meters of total cooling length, on length direction, the 1st and the 3rd group is gap nozzle, other 7 groups is three nozzles, and upper lower collector pipe becomes 30 ° to surface of steel plate, to spray cooling water with the angle of vertical direction.9 groups of collectors along rolled piece longitudinally configuration mode be: 1st, 2,3,5,6,7 groups of collector forwards spray, the 4th, 8,9 groups of collector contra-injections.Flow adjustment when the arrangement form of this forward spray header and contra-injection collector makes hot rolled steel plate cooling is very restricted, contra-injection stream also needs shutoff forward injection stream to impact flush water and the residual water after surface of steel plate in cooling metal sheets, causes that respectively to organize the open mode of collector comparatively fixing.
Utility model content
Technical problem to be solved in the utility model is, solves the shortcoming that above prior art exists, and proposes a kind of inclination injection stream Multifunctional cold radiator cooler of hot rolled steel plate, when meeting multiple process for cooling requirement, can obtain the steel plate of good profile.
The technical scheme that the utility model solves above technical problem is:
A kind of inclination injection stream Multifunctional cold radiator cooler of hot rolled steel plate, by the first movable frame being arranged side by side and the second movable frame, formed, the first movable frame is provided with 8 groups of collectors, be divided into 1-8 group collector, the second movable frame is provided with 10 groups of collectors, be divided into 9-18 group collector, every group of collector is all comprised of upper header and lower collector pipe, 8 upper headers on the first movable frame are all connected with the first elevating mechanism, 10 upper headers on the second movable frame are all connected with the second elevating mechanism, between 8 upper headers on the first movable frame, dash roller is all housed,
Aforementioned 1-2 group collector is arranged gap nozzle, wherein the gap width 2-3mm of gap nozzle; 3-18 group collector is arranged highly dense tube nozzle, upper header nozzle diameter 3-4mm wherein, lower collector pipe nozzle diameter 4-5mm; The injector spacing 40-48mm of each adjacent upper header of 3-18 group collector, the injector spacing 35-63mm of each adjacent lower collector pipe of 3-8 group collector, the injector spacing 24-48mm of each adjacent lower collector pipe of 9-18 group collector;
Nozzle and the vertical direction of each upper header in aforementioned 1-18 group collector are 10 °-30 °, and are forward and reverse alternating spray cooling water; Nozzle and the vertical direction of each lower collector pipe in 1-2 group collector are 10 °-30 °, and are forward injection cooling water; Each lower collector pipe nozzle and vertical direction in 3-18 group collector are 8 °-15 °, and are forward injection cooling water;
When the first movable frame comes into operation, each dash roller and upper surface of steel plate keep the distance of 20-100mm, and when the second movable frame comes into operation, its upper header jet is apart from the height of upper surface of steel plate 320-420mm; When steel plate thickness changes, the nozzle that moves up and down respectively the first movable frame and the second movable frame and upper header and lower collector pipe by the first elevating mechanism and the second elevating mechanism keeps identical height with upper surface of steel plate and lower surface respectively, realizes steel plate upper and lower surface symmetrical and synchronously cooling.
Like this, 1st ~ 18 groups of upper header forwards of inclination injection stream Multifunctional cold radiator cooler, reverse alternating spray cooling water, inclination injection stream cooling water is also limited in forward injection stream by flush water and residual water in raising and steel plate heat exchange efficiency, in the region that contra-injection stream surrounds, make most flush water, residual water is discharged to steel plate width direction both sides, forward injection stream, contra-injection stream surrounds the residual water of fraction outside region and leave surface of steel plate under near the side spray effect from layout and roller-way both sides are arranged water-cooled backplate, flush water while having changed the continuous forward injection of many groups upper header, residual water flows and grows and cause thus ponding layer thickness to increase and the unfavorable conditions of reduction heat exchange efficiency in the upper surface of steel plate holdup time along steel plate traffic direction.
The injection direction of 1st ~ 18 groups of lower collector pipe nozzles of inclination injection stream Multifunctional cold radiator cooler is forward and sprays, the angle of injection stream and vertical direction is between 8 ° ~ 30 °, the horizontal component of spraying cooling water flow velocity is less, and when it is less than the steel plate speed of service, steel plate head was difficult for cold and distortion wooden dipper is bent, the angle that lower collector pipe inclination injection stream and vertical direction are less, has weakened lower collector pipe water spray greatly on the cold impact of the mistake of steel plate afterbody, makes it have good plate shape.
On the first movable frame of inclination injection stream Multifunctional cold radiator cooler, dash roller is housed, is distributed between 1st ~ 8 groups of upper headers.When steel plate enters cooled region, the roller-way of dash roller and below keeps synchronous and rotates, when the first movable frame comes into operation, every dash roller blocks flush water and the residual water of both sides, front and back inclination injection stream, the region separation further forward injection stream, contra-injection stream being surrounded, dwindle the flowing space of flush water, residual water, flush water and residual water are flowed out along steel plate width direction both sides, weaken the impact of residual water on steel-plate shape.
When the first movable frame of inclination injection stream Multifunctional cold radiator cooler comes into operation, dash roller and upper surface of steel plate keep the distance of 20mm left and right, make steel plate quick and cooling water heat exchange when high temperature section, when the second movable frame comes into operation, its upper header jet, apart from the height of upper surface of steel plate 320mm left and right, decreases the cooling rate of steel plate when low-temperature zone.When steel plate thickness changes, upper header can be with moving under movable frame in the vertical direction, and first paragraph movable frame, second segment movable frame keep fixing height with upper surface of steel plate respectively, realize more steel plate upper and lower surface symmetrical, synchronously cooling.
The technical scheme that the utility model further limits is:
The inclination injection stream Multifunctional cold radiator cooler of aforesaid hot rolled steel plate, wherein the work water pressure of each collector is 0.2-0.5MPa, each upper header flow 70-330m
3/ h, each lower collector pipe flow 70-350m
3/ h; Like this, according to the cooling required flow of hot rolled steel plate, select suitable hydraulic pressure, meet the demand of diversified process for cooling; Work water pressure 0.2MPa ~ the 0.5MPa of inclination injection stream Multifunctional cold radiator cooler, single group upper header flow 70m
3/ h ~ 330m
3/ h, single group lower collector pipe flow 70m
3/ h ~ 350m
3/ h; According to the cooling requirement of steel grade low discharge or large flow and be aided with suitable roller table speed, can realize the cooling of the larger cooldown rate scope of hot rolled steel plate, meet the requirement of accelerating cooling, ultrafast cold and direct quenching technique.
The inclination injection stream Multifunctional cold radiator cooler of aforesaid hot rolled steel plate, between the entrance and exit of its medium dip injection stream Multifunctional cold radiator cooler and the first movable frame and the second movable frame, sealing water device is installed, 3-8 group upper header near water-cooled backplate, arrange side-spraying device, side-spraying device is arranged in the roller-way both sides of 9-18 group upper header below, and the entrance and exit of described inclination injection stream Multifunctional cold radiator cooler is installed blow device.
The utility model compared with prior art tool has the following advantages: break through the limitation that traditional laminar flow cooling device cooling capacity is on the low side, cooling uniformity is poor, and take into account and affect the cooling manifold up and down of steel-plate shape arrangement, spray angle, jetting height and injector spacing, when meeting multiple process for cooling requirement, obtain the steel plate of good profile.
Accompanying drawing explanation
Accompanying drawing 1 is inclination injection stream Multifunctional cold radiator cooler structural representation (side view);
Accompanying drawing 2 is inclination injection stream Multifunctional cold radiator cooler structural representations (top view);
In accompanying drawing: A-the first movable frame, B-the second movable frame, 1-shunting collector pipe, 2-upper header, 3-lower collector pipe, 4-dash roller, 5-sealing water device, 6-side-spraying device, 7-blow device, 8-fixed frame, the 9-the first elevating mechanism, 10-steel plate, the 11-the second elevating mechanism.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
embodiment 1
As depicted in figs. 1 and 2, inclination injection stream Multifunctional cold radiator cooler: formed by lower collector pipe on 18 groups, 1st ~ 8 groups of upper headers 2 are fixed on the first movable frame A, between adjacent upper header, be equiped with dash roller 4, 9th ~ 18 groups of upper headers 2 are fixed on the second movable frame B, 1 ~ 18 group of lower collector pipe 3 is fixed between roller-way, upper header 2 is connected with the second elevating mechanism 11 with the first elevating mechanism 9 respectively, 1st ~ 2 groups of collectors are arranged gap nozzle, gap width 2mm, 3rd ~ 18 groups of collectors are arranged highly dense tube nozzle, upper header 2 nozzle diameter 3.5mm, lower collector pipe 3 nozzle diameter 4.5mm, 3rd ~ 18 groups of upper headers 2 are with row's adjacent nozzle spacing 48mm, it is staggered that each arranges nozzle, the vertical range of adjacent two row's nozzles is 40mm, 3rd ~ 8 groups of lower collector pipe 3 are with row's adjacent nozzle spacing 50mm, it is staggered that each arranges nozzle, the vertical range of adjacent two row's nozzles is 45mm, 9th ~ 18 groups of lower collector pipe 3 are with row's adjacent nozzle spacing 48mm, it is staggered that each arranges nozzle, the vertical range of adjacent two row's nozzles is 34mm.
1st ~ 18 groups of upper header 2 nozzles of inclination injection stream Multifunctional cold radiator cooler and vertical direction are 30 ° of forwards, reverse alternating spray cooling water, 1st ~ 2 groups of lower collector pipe 3 nozzles and vertical direction are 30 ° of forwards and spray cooling waters, 3rd ~ 8 groups of lower collector pipe 3 nozzles and vertical direction are 14 ° of forwards and spray cooling waters, and 9th ~ 18 groups of lower collector pipe 3 nozzles are 10 ° of forwards injection cooling waters with vertical direction.20 meters of the cooling zone length of whole inclination injection stream cooling device, 2.8 meters of sector widths of water spray, can cooling burr width be the steel plate of 2.6 meters; Be fixed on dash roller 4 on the first movable frame A apart from upper surface of steel plate 20-100mm, be fixed on upper header 2 jets on the second movable frame B apart from upper surface of steel plate 320-420mm; Between the entrance of inclination injection stream Multifunctional cold radiator cooler, outlet and two frameworks, sealing water device 5 is installed, hydraulic pressure is 1MPa; Side-spraying device 6 is arranged near the roller-way both sides of arranging 6, the 9 ~ 18 groups of upper header belows of side-spraying device water-cooled backplate of 3rd ~ 8 groups of upper headers of inclination injection stream Multifunctional cold radiator cooler, and hydraulic pressure is 1MPa; The entrance of inclination injection stream Multifunctional cold radiator cooler, outlet are provided with blow device 7, and compressed air pressure is 0.6MPa.
During the work of the present embodiment: certain thickness steel plate is during by inclination injection stream Multifunctional cold radiator cooler, according to the cooling required flow of hot rolled steel plate, select suitable work water pressure (0.2MPa ~ 0.5MPa), by adjusting flow and the roller table speed of lower collector pipe on 18 groups, steel plate is cooled to target temperature, according to steel grade, steel plate thickness and temperature drop, 1st ~ 8 groups of collectors of the first movable frame A or 9th ~ 18 groups of collectors of the second movable frame B can come into operation, also two segment frames can come into operation simultaneously, collector on framework continuously or be interrupted and open, the sealing water device 5 of opening between two frameworks separates the residual moisture of two framework belows, change the flow direction of residual water, sealing water device 5 seals the residual water on steel plate face simultaneously, noresidue water on plate face after the water outlet of assurance steel plate, open side spray apparatus 6 falls clearly the residual water of upper surface of steel plate, make cooling water and steel plate carry out heat exchange, when improving cooling effectiveness, prevent that residual water from causing that the wooden dipper of steel plate is bent, open compressed air pressure 0.4MPa ~ 0.6MPa in blow device 7, for removing residual water, steam, the iron scale coming off of surface of steel plate and avoiding the impact of residual water on steel-plate shape, be convenient to the thermometric of surface of steel plate.
The inclination injection stream Multifunctional cold radiator cooler of the hot rolled steel plate of the present embodiment, can break through the limitation that traditional laminar flow cooling device cooling capacity is on the low side, cooling uniformity is poor, and take into account and affect the cooling manifold up and down of steel-plate shape arrangement, spray angle, jetting height and injector spacing, when meeting multiple process for cooling requirement, obtain the steel plate of good profile.
In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (3)
1. the inclination injection stream Multifunctional cold radiator cooler of a hot rolled steel plate, it is characterized in that: by the first movable frame being arranged side by side and the second movable frame, formed, described the first movable frame is provided with 8 groups of collectors, be divided into 1-8 group collector, described the second movable frame is provided with 10 groups of collectors, be divided into 9-18 group collector, every group of collector is all comprised of upper header and lower collector pipe, 8 upper headers on described the first movable frame are all connected with the first elevating mechanism, 10 upper headers on described the second movable frame are all connected with the second elevating mechanism, between 8 upper headers on described the first movable frame, dash roller is all housed,
Described 1-2 group collector is arranged gap nozzle, the gap width 2-3mm of described gap nozzle; Described 3-18 group collector is arranged highly dense tube nozzle, upper header nozzle diameter 3-4mm wherein, lower collector pipe nozzle diameter 4-5mm; The injector spacing 40-48mm of each adjacent upper header of described 3-18 group collector, the injector spacing 35-63mm of each adjacent lower collector pipe of described 3-8 group collector, the injector spacing 24-48mm of each adjacent lower collector pipe of described 9-18 group collector;
Nozzle and the vertical direction of each upper header in described 1-18 group collector are 10 °-30 °, and are forward and reverse alternating spray cooling water; Nozzle and the vertical direction of each lower collector pipe in described 1-2 group collector are 10 °-30 °, and are forward injection cooling water; Each lower collector pipe nozzle and vertical direction in described 3-18 group collector are 8 °-15 °, and are forward injection cooling water.
2. the inclination injection stream Multifunctional cold radiator cooler of hot rolled steel plate according to claim 1, is characterized in that: the work water pressure of described each collector is 0.2-0.5MPa, each upper header flow 70-330m
3/ h, each lower collector pipe flow 70-350m
3/ h.
3. the inclination injection stream Multifunctional cold radiator cooler of hot rolled steel plate according to claim 1, it is characterized in that: between the entrance and exit of described inclination injection stream Multifunctional cold radiator cooler and the first movable frame and the second movable frame, sealing water device is installed, 3-8 group upper header near water-cooled backplate, arrange side-spraying device, side-spraying device is arranged in the roller-way both sides of 9-18 group upper header below, and the entrance and exit of described inclination injection stream Multifunctional cold radiator cooler is installed blow device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320637470.XU CN203565503U (en) | 2013-10-16 | 2013-10-16 | Multifunctional cooling device for inclined jet streams in hot rolling process of medium plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320637470.XU CN203565503U (en) | 2013-10-16 | 2013-10-16 | Multifunctional cooling device for inclined jet streams in hot rolling process of medium plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203565503U true CN203565503U (en) | 2014-04-30 |
Family
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|---|---|---|---|
| CN201320637470.XU Expired - Lifetime CN203565503U (en) | 2013-10-16 | 2013-10-16 | Multifunctional cooling device for inclined jet streams in hot rolling process of medium plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203565503U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170662A (en) * | 2015-07-20 | 2015-12-23 | 东北大学 | Multi-cavity flow-controllable spray header |
| CN106269916A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling system and process |
| CN106269932A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling device |
| CN107282683A (en) * | 2017-07-03 | 2017-10-24 | 重庆泰山电缆有限公司 | A kind of aluminum-extruding machine cooling system for being exclusively used in cable production |
-
2013
- 2013-10-16 CN CN201320637470.XU patent/CN203565503U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170662A (en) * | 2015-07-20 | 2015-12-23 | 东北大学 | Multi-cavity flow-controllable spray header |
| CN106269916A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling system and process |
| CN106269932A (en) * | 2016-10-25 | 2017-01-04 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling device |
| CN106269916B (en) * | 2016-10-25 | 2019-03-01 | 东北大学 | A kind of hot rolled seamless steel tube On-line Control cooling system and process |
| CN107282683A (en) * | 2017-07-03 | 2017-10-24 | 重庆泰山电缆有限公司 | A kind of aluminum-extruding machine cooling system for being exclusively used in cable production |
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| GR01 | Patent grant | ||
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Granted publication date: 20140430 |