CN104148408A - Multifunctional bar graded temperature control rolling and controlled cooling equipment - Google Patents
Multifunctional bar graded temperature control rolling and controlled cooling equipment Download PDFInfo
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- CN104148408A CN104148408A CN201410325857.0A CN201410325857A CN104148408A CN 104148408 A CN104148408 A CN 104148408A CN 201410325857 A CN201410325857 A CN 201410325857A CN 104148408 A CN104148408 A CN 104148408A
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Abstract
The invention provides multifunctional bar graded temperature control rolling and controlled cooling equipment, and belongs to the technical field of hot-rolled bar on-line controlled rolling and cooling equipment. The equipment comprises four cooling sections of the 1# A cooling section which is arranged on an outlet of a 12# rolling mill, the B cooling section which is arranged between a 14# rolling mill and a 18# rolling mill, the 2# C cooling section which is arranged behind the 18# rolling mill, and the 3# D cooling section which is arranged behind 3# double length shears. The multifunctional bar graded temperature control rolling and controlled cooling equipment has the advantages that the specifications of suitable products range from 10 mm to 60 mm in diameter; the yield strength grade of suitable steel ranges from 400 MPa to 1100 MPa; the ultimate temperature after controlled rolling can achieve 800 DEG C; the cooling area ranges from 300 DEG C to 1000 DEG C; the cooling speed adjustable range is 30-500 DEG C/s; the temperature fluctuation of a finish rolling inlet after controlled rolling and cooling and an upper cooling bed is smaller than or equal to +/-7.5 DEG C. The multifunctional bar graded temperature control rolling and controlled cooling equipment has obvious advantages on generality, cooling evenness, the controlled rolling and ultra fast cooling mode, the cooling area, the cooling speed adjustable range and the like, and the cooling demand for various steel kinds, full specifications and precise evenness of bar products is met for the first time.
Description
Technical field
The invention belongs to the online controlled rolling and controlled cooling equipment technical field of hot rolled rod, the rolling of a kind of multi-functional bar graded temperature-control and control-cooling equipment are particularly provided.
Background technology
At present, the standby wretched insufficiency that exists of the bar controlled rolling and controlled cooling of developing and applying as Da Nieli, Some Domestic research institutions or ultrafast cold charge, be mainly reflected in its controlled rolling pattern, controlled rolling limiting temperature, roll the aspect existing problems such as rear ultrafast cold pattern, chilling temperature interval and cooling rate adjustable extent, cooling rear temperature fluctuation, after causing such equipment to be reached the standard grade, versatility is poor, can not meet many steel grades, many specifications differentiation process for cooling demand, particular problem is as follows:
1) adopt 780-800 DEG C of zerolling to there is remarkable advantage, as refine austenite crystal grain, raising deformation dislocation density, inhibition recrystallization reduce mixed crystal, refine pearlite sheet interlayer spacing, postpone bainite/martensite phase transformation, improve sub-eutectoid steel intensity etc., but at present, most bars product lines cooling temperature drop ability in limited distance between machine is very little, does not reach temperature requirements;
2) can not meet large specification and get rid of after frame zerolling distortion coolingly immediately, zerolling effect is weakened, as caused, high density low temperature deformation dislocation disappears in a large number rapidly, the quick alligatoring of austenite crystal etc. after low temperature deformation.
3) between milling train, the section temperature difference of cooling procedure is large, the section (surface, 1/4, heart portion) of especially large specification, and the heart table temperature difference can reach more than 200 DEG C, causes rolling intermediate blank to occur " male and female face ", and heap steel accident rate is high;
4) one-part forms that adopt cooling more, and bar opens that the interval controlled range of cold-peace final cooling temperature is little, and especially final cooling temperature is difficult to accurate control, is adapted to cooling steel grade and specification covering scope is little.
5) rolling rear cooling uniformity poor, there is black line in part surface, and surface quality is poor; Histological difference is large, and local residual stress is large, causes especially seriously bending of the upper cold bed bar shaped of small dimension (≤Φ 14mm), cannot direct motion rolling.
6) overall cooler construction type is single, and the different temperature drop stage cooling velocities of cooling procedure are can modification scope little;
7) automatization level is low, and the unrealized flow line closed loop control based on constant target temperature causes cooled finish rolling inlet temperature processed and upper cold bed temperature fluctuation large (reach respectively ± 15 DEG C, ± 20 DEG C).
Summary of the invention
The object of the present invention is to provide the rolling of a kind of multi-functional bar graded temperature-control and control-cooling equipment, first fit the cooling requirement of the many steel grades of bar, many specifications, precision, versatility is extremely strong.Be applicable to microalloy element minimizing under bar product high-quality condition.
The present invention has designed 3 large classes and has had the bar cooler (forward and reverse turbulent flow cooler, unidirectional gas cut turbulent flow cooler, pressure release cellular type quench water case) of different heat-exchange capacities, simultaneously every large class cooler is planted different internal structures according to stocking set of specifications apart from being designed to more than 10 again, and on rolling line, has carried out the design of deploying to ensure effective monitoring and control of illegal activities of 17 sections of knockdown overall situations of 64m.The applicable product specification of this equipment contains Φ 10-60mm; Applicable steel grade yield strength rank contains 400-1100MPa; Limiting temperature after controlled rolling can reach 800 DEG C; Meet large specification and get rid of after frame zerolling water-cooled immediately; Entirety can cover 300-1000 DEG C between cooling zone; 30-500 DEG C/s of cooling rate adjustable extent; After controlled rolling and controlled cooling the fluctuation of finish rolling entrance processed and upper cold bed temperature controlled≤± 7.5 DEG C.
The present invention includes four cooling sections, is to be respectively arranged in 12
#the 1# cooling section (A section) of milling train outlet, be arranged in 14
#-18
#cooling section (B section) between milling train, be arranged in 18
#2# cooling section (C section) after milling train, be arranged in 3
#after multi-length shear 3
#cooling section (D section), as shown in Figure 1.Each cooling section is designed to respectively again some segments, as shown in table 1: A section comprises 3 segmentations and (is denoted as A
1, A
2, A
3) forward and reverse turbulent flow cooler (being divided into ZFX1, two kinds of models of ZFX2) of each 4m, B section comprises 4 segmentations and (is denoted as B
1, B
2, B
3, B
4) the forward and reverse gentle section of turbulent flow cooler of each 4m, C section comprises 8 segmentations and (is denoted as C
1, C
2, C
3, C
4, C
5, C
6, C
7, C
8) gas of each 3m cuts turbulent flow cooler (being divided into DX1, DX2, DX3, DX4, five kinds of models of DX5), D section comprises 2 segmentations and (is denoted as D
1, D
2) the release cellular type cooler of each 6m.
The global design of table 1 cooling device
Parts and connected mode that equipment specifically comprises are as follows:
1# cooling section (A section): as shown in Figure 2, the each parts of 1# water-cooled section are as follows: carry out supply mains 1, water-thermometer 2, manually main valve 3, pneumatic control valve 4, flowmeter 5, water pressure gauge 6, shunt valve 7, water inlet pipe 8, ZFX2 guider 9, ZFX1 guider 10, rollgang 11, rollgang motor 12, metal hose 13, sliding machine 14, the forward and reverse cooler 15 of ZFX2, the forward and reverse cooler 16 of ZFX1, rollgang tie-beam 17, ZFX1 cooler tie-beam 18, ZFX2 cooler tie-beam 19, electric push rod 20, electric push rod motor 21, electric push rod connects bearing 22, chassis slip rail 23.Water-thermometer 2, manual main valve 3, pneumatic control valve 4, flowmeter 5, water pressure gauge 6 are arranged on supply mains 1; Shunt valve 7 is arranged on water inlet pipe 8; ZFX2 guider 9, ZFX1 guider 10, the forward and reverse cooler 15 of ZFX2, each continuous three of the forward and reverse cooler 16 of ZFX1 are arranged in parallel on chassis; Continuous six of rollgang 11 is arranged on rollgang tie-beam 17, two rollgang motors 12 of each rollgang cellular installation; Electric pushrod 20 is driven by electric pushrod motor 21, is fixed on electric pushrod and connects and support on 22, and electric pushrod 20 can carry out crawl and rapid translation by chassis slip rail 23, and crawl is apart from 2mm, point-to-point speed 1m/min.From as upper-part, two cooling lines of single line are designed and a bypass roller line is arranged in parallel on a long 12m, the transversely movable chassis of wide 2.4m.Every cooling line is made up of 3 groups of coolers, can independence or be used in combination A according to different steel grades, specification
1-A
3forward and reverse turbulent flow cooler of group and ZFX1, two kinds of models of ZFX2.Rollgang: roll size
190 × 190mm; Spacing 1000mm; Roller linear velocity 3-8.5m/s; Variable-frequency motor model YTSP132S-6; Power of motor 27 × 2.2kw.
14
#-18
#cooling section (B section) between milling train: be mainly for the large specification of getting rid of frame rolling (more than Φ 22mm), meet its water-cooled immediately after low-temperature deformation, thereby retain high density low temperature deformation dislocation, it is got rid of milling train exchange common-base with quilt and is used.Be applicable to rolling of Φ 22mm and above large specification rear cooling, be made up of four groups of coolers, every group of cooler length is 4m, be arranged between 14#-18# milling train, and looper between finishing mill exchanges.Require independently or to combine installation A according to rolling specs and process for cooling
1-A
4four groups of coolers.The above size round steel of Φ 28mm adopts forward and reverse cooler, Φ 22-28mm to adopt gas to cut cooler.
2# cooling section (C section): designed single line, two-wire, the cooling line of four lines and a bypass roller line and be arranged in parallel on transversely movable 4 chassis of a long 24m, wide 2.4m (on 1 chassis, accessory as shown in Figure 3).Single line, two-wire, the cooling line of four lines are made up of 8 groups of coolers respectively, can independence or the C that is used in combination according to different steel grades, specification
1-C
8forward and reverse turbulent flow cooler of group DX1, DX2, DX3, DX4, five kinds of models of DX5.Rollgang: roll size
190 × 200mm; Spacing 1000mm; Roller linear velocity 3.0-20m/s; Variable-frequency motor model YTSP132S-6; Power of motor 24 × 2.2kw.8, track; 4, chassis; Wherein Φ 22mm and above specification thereof adopt that single line is cooling, Φ 18-20mm can adopt two wires, Φ 16mm to adopt three lines, Φ 12/14mm to adopt four lines; List/double-line cooling device can exchange, and three/tetra-line coolers can exchange; 8 of electric pushrods, clean stroke 1750mm.
3# cooling section (D section): be positioned at 3
#after multi-length shear, designed two cooling lines of single line and a bypass roller line, three line parallels are arranged on two long 6m, the transversely movable chassis of wide 2m.C can be installed respectively
1-C
2two groups of coolers, use for the rear quenching of rolling of the above specification of Φ 22mm.Rollgang: roll size
190 × 200mm; Spacing 1000mm; Roller linear velocity 3.0-20m/s; Motor model YTSP132S-6 frequency control; Power of motor 12 × 2.2kw.Specifically have: 4, track; 2, chassis; 1 of roller line; 4 of electric pushrods, clean stroke 1100mm.
The cooler internal structure parameter that relates to Multiple Type in as above equipment designs as follows by analogue simulation:
ZFX (forward and reverse turbulent flow cooler: as shown in Figure 4, being applicable to round steel size 20mm≤Φ≤35mm, ZFX2 is applicable to round steel and is of a size of the cooling of 35mm≤Φ≤60mm, design its internal structure unit as shown in Figure 6, its structure mainly comprises: water inlet pipe 24; Directional nozzle 25; Intake chamber 26; Turbulent flow nozzle 27; Adpting flange 28; Overcoat 29; (directional nozzle 25 is arranged between water inlet pipe 24 and intake chamber 26 turbulent pipe 30 at a certain angle, turbulent flow nozzle 27 is consistent with directional nozzle 25 angles of inclination, closely be connected, but leave certain gap, for circumferential weld, adpting flange 28 is connected nozzle with turbulent flow road 30, turbulent pipe 30 is built in overcoat 29).According to the analog computation of the finite element software such as FLUNET, DEFFORM, the θ of design ZFX1 cooler
1, θ
2, θ
3, d
1, d
2, l, l
1, l
2, l
3parameter value is respectively 30 °, 30 °, 30 °, 65mm, 70mm, 1200mm, 75mm, 50mm, 75mm; The as above parameter value of design ZFX2 is respectively 30 °, 28 °, 28 °, 85mm, 90mm, 1200mm, 90mm, 60mm, 90mm.The heat exchange coefficient of ZFX1 and two kinds of coolers of ZFX2 is as shown in table 2, and the type cooler heat exchange coefficient can return greatly and not water, therefore this type of cooler is arranged between machine or after partly specification is rolled greatly.
The forward and reverse cooler heat of cooling of table 2 exchange coefficient
DX1, DX2, DX3, DX4, DX5 (unidirectional gas cuts turbulent flow cooler) are as shown in Figure 5, applicable set of specifications is apart from being respectively Φ 10-12mm, Φ 14-16mm, Φ 18mm, Φ 20-25mm, Φ 25-30mm, it adopts one end water inlet, the other end sluices and uses pressure-air to intercept water, and gas consumption 20m intercepts water
3/ min; Intercept water and use air pressure 0.6-0.8MPa.The θ of these five kinds of model coolers
1, θ
2, θ
3, d
1, d
2, l, l
1, l
2, l
3parameters simulation board design is as shown in table 3, and heat exchange coefficient is as shown in table 4, and such cooler heat exchange coefficient is little, is easy to control chilling temperature interval and cooling rate, is especially applicable to small dimension cooling, is arranged in after the rolling of middle small dimension.
The unidirectional gas of table 3 cuts cooler internal structure parameter designing
The unidirectional gas of table 4 cuts cooler heat of cooling exchange coefficient
In addition the overall Design of Waterworks of this equipment: 5 450m
3/ h variable frequency pump; For water inventory 1600m
3/ h; Operating pressure 1.8-2.0MPa; Water water temperature 25-32 DEG C; Water quality suspension≤20mg/l; 1# cooling section carrys out supply mains and realizes adjusting automatically, range of flow 100-600m from alone one of pumping plant
3/ h; Operating pressure 1.8-2.0MPa; Two 450m
3/ h variable frequency pump supplies water; Between 2#, machine and 3# cooling section from pumping plant share one come supply mains, operating pressure 1.8-2.0MPa.Wherein between machine, section range of flow is 100-400m
3/ h, 2#-1 range of flow are 100-500m
3/ h, 2#-2 range of flow are 100-400m
3/ h, 3# section range of flow 200-800m
3/ h, three 450m
3/ h variable frequency pump supplies water; System can be allocated hydraulic pressure and flow according to the size of rolled piece and technological requirement.
The invention has the advantages that, the multi-functional controlled rolling control-cooling equipment of this cover appropriate products specification contains Φ 10-60mm; Be suitable for steel grade yield strength rank and contain 400-1100MPa; After controlled rolling, limiting temperature can reach 800 DEG C; Between cooling zone, cover 300-1000 DEG C; Cooling rate can modification scope 30-500 DEG C/s; Finish rolling entrance processed and the fluctuation of upper cold bed temperature after controlled rolling and controlled cooling≤± 7.5 DEG C.This controlled rolling is rolled between versatility, cooling uniformity, controlled rolling and ultrafast cold pattern, the cooling zone of control-cooling equipment and is possessed significant advantage with cooling rate adjustable extent etc., first fit the many steel grades of bar product, full specification, accurate cooling requirement uniformly.
Brief description of the drawings
Fig. 1 is cooling device complete layout.
Fig. 2 is that A cooling section is arranged and member detail.Wherein, come supply mains 1, water-thermometer 2, manual main valve 3, pneumatic control valve 4, flowmeter 5, water pressure gauge 6, shunt valve 7, water inlet pipe 8, ZFX2 guider 9, ZFX1 guider 10, rollgang 11, rollgang motor 12, metal hose 13, sliding machine 14, the forward and reverse cooler 15 of ZFX2, the forward and reverse cooler 16 of ZFX1, rollgang tie-beam 17, ZFX1 cooler tie-beam 18, ZFX2 cooler tie-beam 19, electric push rod 20, electric push rod motor 21, electric push rod connection bearing 22, chassis slip rail 23
Fig. 3 is the three-dimensional equipment figure of C cooling section (1 chassis, i.e. 1/4 length).
Fig. 4 is single line, forward and reverse formula turbulent flow cooler.
Fig. 5 is single line, unidirectional gas intercept form turbulent flow cooler.
Fig. 6 is cooler internal element structure chart.Wherein, water inlet pipe 24; Directional nozzle 25; Intake chamber 26; Turbulent flow nozzle 27; Adpting flange 28; Overcoat 29; Turbulent pipe 30.
Fig. 7 is embodiment 1 low temperature classification During Controlled Rolling temperature curve.
Fig. 8 is that embodiment 1 rolls the cold process temperature curve of rear classification control.
Detailed description of the invention
The present invention includes four cooling sections, is to be respectively arranged in 12
#the 1# cooling section (A section) of milling train outlet, be arranged in 14
#-18
#cooling section (B section) between milling train, be arranged in 18
#2# cooling section (C section) after milling train, be arranged in 3
#after multi-length shear 3
#cooling section (D section), as shown in Figure 1.Each cooling section is designed to respectively again some segments, as shown in table 1: A section comprises 3 segmentations and (is denoted as A
1, A
2, A
3) forward and reverse turbulent flow cooler (being divided into ZFX1, two kinds of models of ZFX2) of each 4m, B section comprises 4 segmentations and (is denoted as B
1, B
2, B
3, B
4) the forward and reverse gentle section of turbulent flow cooler of each 4m, C section comprises 8 segmentations and (is denoted as C
1, C
2, C
3, C
4, C
5, C
6, C
7, C
8) gas of each 3m cuts turbulent flow cooler (being divided into DX1, DX2, DX3, DX4, five kinds of models of DX5), D section comprises 2 segmentations and (is denoted as D
1, D
2) the release cellular type cooler of each 6m.
Embodiment 1:
According to steel grade and specification, utilize the mobile trolley used assembling of electric pushrod, by cooling dimension line alignment rolling centerline; According to technological requirement, manually main valve often leaves, and opens each shunt valve according to the applicable cases of cooling section; Set nozzle hydraulic pressure and discharge according to the applicable cases of stocking specification and cooler.Control overall coolant water temperature 25-32 DEG C, hydraulic pressure 1.5-2.0MPa.
A cooling section selects A
1, A
3, cooler type is selected ZFX1, flow 150m
3/ h, pressure 1.8MPa;
C cooling section selects C
1, C
6, cooler type is selected DX1, flow 200m
3/ h, pressure 1.5MPa.
Its classification During Controlled Rolling temperature curve as shown in Figure 7, rolls the cold process temperature curve of rear classification control as shown in Figure 8.Embodiment 2:
According to steel grade and specification, utilize the mobile trolley used assembling of electric pushrod, by cooling dimension line alignment rolling centerline; According to technological requirement, manually main valve often leaves, and opens each shunt valve according to the applicable cases of cooling section; Set nozzle hydraulic pressure and discharge according to the applicable cases of stocking specification and cooler.Control overall coolant water temperature 25-32 DEG C, hydraulic pressure 1.5-2.0MPa.
A cooling section selects A
1, A
3, cooler type is selected ZFX2, flow 200m
3/ h, pressure 1.5MPa;
B cooling section selects B
3, B
4, flow 250m
3/ h, pressure 1.5MPa;
C cooling section selects C
3, C
8, cooler type is selected DX3, flow 300m
3/ h, pressure 1.5MPa.
Embodiment 3:
According to steel grade and specification, utilize the mobile trolley used assembling of electric pushrod, by cooling dimension line alignment rolling centerline; According to technological requirement, manually main valve often leaves, and opens each shunt valve according to the applicable cases of cooling section; Set nozzle hydraulic pressure and discharge according to the applicable cases of stocking specification and cooler.Control overall coolant water temperature 25-32 DEG C, hydraulic pressure 1.5-2.0MPa.
A cooling section selects A
1, A
2, A
3, cooler type is selected ZFX2, flow 300m
3/ h, pressure 1.5MPa;
B cooling section selects B
3, B
4, flow 300m
3/ h, pressure 1.5MP
a;
C cooling section selects C
4, C
5, cooler type is selected DX5, flow 350m
3/ h, pressure 1.4MPa.
D cooling section selects D
1, D
2, flow 600m
3/ h, pressure 1.4MP
a.
In table 5 embodiment 1,2,3, controlled rolling and controlled cooling device combination uses table
Claims (5)
1. the rolling of multi-functional bar graded temperature-control and a control-cooling equipment, comprises four cooling sections, is to be respectively arranged in 12
#the 1# cooling section A section of milling train outlet, be arranged in 14
#-18
#cooling section B section between milling train, be arranged in 18
#2# cooling section C section after milling train, be arranged in 3
#after multi-length shear 3
#cooling section D section; 1# cooling section A section comprises 3 segmentations, forward and reverse turbulent flow cooler of each 4m, and B section comprises 4 segmentations, the forward and reverse gentle section of turbulent flow cooler of each 4m, C section comprises 8 segmentations, and the gas of each 3m cuts turbulent flow cooler, D section comprises 2 segmentations, the release cellular type cooler of each 6m.
2. method according to claim 1, it is characterized in that, 1# cooling section A section comprises coming supply mains (1), water-thermometer (2), manually main valve (3), pneumatic control valve (4), flowmeter (5), water pressure gauge (6), shunt valve (7), water inlet pipe (8), ZFX2 guider (9), ZFX1 guider (10), rollgang (11), rollgang motor 12, metal hose 13, sliding machine 14, the forward and reverse cooler 15 of ZFX2, the forward and reverse cooler of ZFX1 (16), rollgang tie-beam (17), ZFX1 cooler tie-beam (18), ZFX2 cooler tie-beam (19), electric push rod (20), electric push rod motor (21), electric push rod connects bearing (22), chassis slip rail (23), water-thermometer (2), manual main valve (3), pneumatic control valve (4), flowmeter (5), water pressure gauge (6) are arranged on supply mains (1), shunt valve (7) is arranged on water inlet pipe (8), ZFX2 guider (9), ZFX1 guider (10), the forward and reverse cooler of ZFX2 (15), each continuous three of the forward and reverse cooler of ZFX1 (16) are arranged in parallel on chassis, continuous six of rollgang (11) is arranged in rollgang tie-beam (17) above, two rollgang motors of each rollgang cellular installation (12), electric pushrod (20) is driven by electric pushrod motor (21), being fixed on electric pushrod connects in support (22), electric pushrod (20) can carry out crawl and rapid translation by chassis slip rail (23), crawl is apart from 2mm, point-to-point speed 1m/min.
3. method according to claim 1, is characterized in that, 14
#-18
#cooling section B section between milling train: be applicable to rolling of Φ 22mm and above large specification rear cooling, be made up of four groups of coolers, every group of cooler length is 4m, is arranged between 14#-18# milling train, and looper between finishing mill exchanges.
4. method according to claim 1, is characterized in that, 2# cooling section C section: designed single line, two-wire, the cooling line of four lines and a bypass roller line and be arranged in parallel on 4 chassis of a long 24m, wide 2.4m transverse shifting; Single line, two-wire, the cooling line of four lines are made up of 8 groups of coolers respectively; According to different steel grades, specification independence or the C that is used in combination
1-C
8forward and reverse turbulent flow cooler of group DX1, DX2, DX3, DX4, five kinds of models of DX5; Rollgang: roll size
190 × 200mm; Spacing 1000mm; Roller linear velocity 3.0-20m/s; Variable-frequency motor model YTSP132S-6; Power of motor 24 × 2.2kw; 8, track; 4, chassis; It is cooling that wherein Φ 22mm and above specification thereof adopt single line, and Φ 18-20mm adopts two wires, and Φ 16mm adopts three lines, and Φ 12/14mm adopts four lines; List/double-line cooling device can exchange, and three/tetra-line coolers can exchange; 8 of electric pushrods, clean stroke 1750mm.
5. method according to claim 1, is characterized in that, 3# cooling section D section: be positioned at 3
#after multi-length shear, designed two cooling lines of single line and a bypass roller line, three line parallels are arranged on the chassis of two long 6m, wide 2m energy transverse shifting; C is installed respectively
1-C
2two groups of coolers, use for the rear quenching of rolling of the above specification of Φ 22mm; There is 4, track; 2, chassis; 1 of roller line; 4 of electric pushrods, clean stroke 1100mm.
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| CN201410325857.0A CN104148408A (en) | 2014-07-09 | 2014-07-09 | Multifunctional bar graded temperature control rolling and controlled cooling equipment |
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|---|---|---|---|
| CN201410325857.0A CN104148408A (en) | 2014-07-09 | 2014-07-09 | Multifunctional bar graded temperature control rolling and controlled cooling equipment |
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| CN105195534A (en) * | 2015-10-22 | 2015-12-30 | 首钢水城钢铁（集团）有限责任公司 | Rod production cooling control process and apparatus thereof |
| CN106311777A (en) * | 2016-08-30 | 2017-01-11 | 江苏省沙钢钢铁研究院有限公司 | Graded cooling control system of rod finish rolling |
| CN109675933A (en) * | 2018-12-29 | 2019-04-26 | 北京勤泽鸿翔冶金科技有限公司 | A kind of bar water cooling closed-loop control process and control system |
| CN109985910A (en) * | 2019-04-12 | 2019-07-09 | 安徽马钢和菱实业有限公司 | A kind of thin-walled Trailer car shaft thickens shoulder region and rolls preceding heating means |
| CN110479776A (en) * | 2019-08-21 | 2019-11-22 | 中冶华天工程技术有限公司 | DEVICE FOR BAR AND WIRE HOT ROLLING rolls rear closed loop control cooling system and control method |
| CN112264471A (en) * | 2020-11-16 | 2021-01-26 | 福建三钢闽光股份有限公司 | Rod and wire rod water cooling device |
| CN113546971A (en) * | 2020-04-24 | 2021-10-26 | 德国考科斯技术有限公司 | Apparatus for cooling long products and method for cooling long products using said apparatus |
| CN114074116A (en) * | 2020-08-13 | 2022-02-22 | 北京京诚瑞信长材工程技术有限公司 | Hot rolling reinforcing bar rod accuse rolling accuse cold production line |
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Application publication date: 20141119 |