CN206153294U - Hot -rolling seamless pipe on -line control cooling system - Google Patents
Hot -rolling seamless pipe on -line control cooling system Download PDFInfo
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- CN206153294U CN206153294U CN201621157417.XU CN201621157417U CN206153294U CN 206153294 U CN206153294 U CN 206153294U CN 201621157417 U CN201621157417 U CN 201621157417U CN 206153294 U CN206153294 U CN 206153294U
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Abstract
The utility model provides a hot -rolling seamless pipe on -line control cooling system, include a turning device, the 2nd turning device, control cooling device, sweep device and automated control system, a turning device with the 2nd turning device symmetrical arrangement in the both sides of control cooling device, the control cooling device is including cooling off rotatory roll table, high -pressure water spray nozzle device, the collector pipe that sprays water with high pressure, wherein high pressure water spray nozzle device set up in the both ends of the rotatory roll table of cooling for cooling steel pipe inner wall, the collector pipe setting of spraying water with high pressure is in the rotatory roll table top of cooling, the nozzle that the collector pipe lower extreme that sprays water with high pressure configuration slope was arranged, sweep the device set up in the both ends of the rotatory roll table of cooling for clear away the residual water of the steel pipe inner wall after the cooling, the automated control system with a turning device the 2nd turning device the control cooling device with it connects to sweep the device electricity.
Description
Technical field
The utility model belongs to steel pipe's production manufacturing process technology field, and in particular to a kind of hot rolled seamless steel tube is in line traffic control
Cooling system processed.
Background technology
Controlled cooling process technology lifts the effective ways of comprehensive mechanical property as steel microstructure is improved,
It is used widely in field of steel material production such as hot-strip, cut deal, Bar Wire Product and section bars.However, seamless for hot rolling
For production technology of steel tube, domestic common production procedure at present is pipe Jing annular stove heats, punch perforation, Hot Rolling Mill
After the operation such as rolling and the shaping of sizing mill scale, steel pipe is delivered on cold bed by roller-way and is air cooled to room temperature.Due to steel pipe
Lack effectively cooling control device after hot rolling deformation, therefore cannot utilize what hot-strip Bar Rolling Process field was commonly used
Controlled cooling process is enhanced product performance improving product microscopic structure, be easily caused hot rolled seamless steel tube to roll state tissue thick,
And the harmful structures such as a large amount of Wei Shi bodies are usually contained, while mechanical properties of pipe cannot meet user's request.For solve problem,
Have to rely on follow-up heat-treated offline operation, will steel pipe heat austenitizing in heating furnace again, by normalizing
Or after modifier treatment, improve microscopic structure and lift mechanical property.But on the one hand can be greatly promoted using heat-treated offline method
The production costs such as energy consumption, while also increasing the production cycle of product.Bosher is controlled after to give full play to seamless steel pipe hot-rolling
Skill is acted on the robust adaptive control of product structure property, and way relatively advanced at present is that On-line Control cooling is set up after sizing mill
System, the seamless steel pipe after to hot rolling sizing carries out tissue inter-variable's control, and to significantly improve product strength, to improve product comprehensive
Mechanical property is closed, alloy usage amount is reduced, so as to realize the industrial production of low-cost and high-performance hot rolled seamless steel tube product.
Patent of invention CN101157096A discloses a kind of process of hot rolled seamless steel tube On-line Control cooling, technology
Scheme is the rollgang of the variable-angle that certain length is arranged after sizing mill, after steel pipe goes out sizing mill completely, conveying roller
Road axis promotes hot finished steel pipe to start with own axes rotation, and before rolling direction along rotating 6 ~ 12 ° perpendicular to rolling line direction
Enter by controlling cooling device, subsequent roller-way is reset to axis perpendicular to rolling line direction；Control cooling device adopts aerosol medium
Cooling, can be cooled to 680 ~ 780 DEG C by steel pipe by 950 ~ 980 DEG C, and temperature drop value is between 200 ~ 270 DEG C.The process is per cold
But a steel pipe, variable-angle roller-way need to be reversed and resetted once, operate it is complex, simultaneously because cooling capacity is limited, most
Big temperature drop value is only 270 DEG C, it is impossible to meet the process requirements of low temperature control cooling and direct quenching.
Patent of invention CN101570813A discloses a kind of directly quenching seamless steel pipes device and method, and the device includes steel
Tube outer surface cooling device and inner surface cooling device, its outer surface cooling device is made up of annular cooler；Inner surface is cold
But device is shaft-like, positioned at the top of variable-angle roller-way, and inserts the centre of outer surface annular cooler；Cooling means is
By the inside and the outside of inner surface cooler of steel pipe market to annular cooler, implement quenching；The cooling device and technique side
Method is capable of achieving hot rolled seamless steel tube from condition of high temperature direct water-cooling to less than 200 DEG C of quenching technical, but cannot be met
The process requirements of line traffic control cooling, i.e., according to the needs of steel structure property, cannot realize the accurate control of temperature in Cooling Process
System.
Utility model patent CN201346567Y discloses a kind of online accelerated cooling device of steel pipe：By ring type cooling device
On original rollgang；Ring type cooling device is made up of a compression ring, a water ring and one group of aerial fog nozzle；Cooling dress
Put in the casing for being placed in closing, form full-enclosed structure；The cooling device adopts outer wall of the ring-type injection method to steel pipe
Implement water-cooled or aerosol cooling, in terms of cooling uniformity, because inner surface does not implement effectively quick cooling, therefore in steel pipe
Easily there is more serious structure property difference in wall thickness direction, simultaneously because the box typed structure of closing is employed, in steel pipe
When there is the accident such as bending, it is unfavorable for the timely process of production scene.
The content of the invention
For the problem that prior art is present, the utility model provides a kind of hot rolled seamless steel tube On-line Control cooling system
System.The technical solution of the utility model is：
A kind of hot rolled seamless steel tube On-line Control cooling system, including the first turning device, the second turning device, control it is cold
But device, blow device and automation control system, first turning device and second turning device are symmetrically arranged in
The both sides of the control cooling device；The control cooling device includes cooling rotating roller, the ejecting device that sprays water with high pressure, high pressure
Water spray collector pipe, wherein the ejecting device that sprays water with high pressure is arranged at the two ends of the cooling rotating roller, for cooling pipe
Inwall；The collector pipe that sprays water with high pressure is arranged on the cooling rotating roller top, the collector pipe lower end configuration of spraying water with high pressure
The nozzle being in tilted layout；The blow device is arranged at the two ends of the cooling rotating roller, for removing the steel pipe after cooling down
The residual water of inwall；The automation control system is cold with first turning device, second turning device, the control
But device and the blow device are electrically connected.
Further, first turning device and second turning device are respectively positioned at the rolling line roller-way of hot rolling technology
With the side of cold rear rollgang, wherein first turning device be used for by hot rolled seamless steel tube by hot rolling technology rolling line roller
Road is sent to the control cooling device, and the steel pipe that second turning device is used for after control cooling is finished is from the control
Cooling device is sent to cold rear rollgang.
Further, cooling rotating roller side top is provided with pipe pressing device, for aiding in steel pipe in cooling rotating roller
Rotation at a high speed in situ is realized on road.
Further, on elevating lever, it highly can be according to outer diameter of steel pipes chi for the ejecting device that sprays water with high pressure
Very little specification is adjusted, so that water column is all injected on steel pipe inner wall, in cooling procedure, positioned at cooling rotating roller two ends
The ejecting device that sprays water with high pressure takes the mode of alternating spray, to lift the cooling uniformity on steel pipe inner wall length direction.
Further, the collector pipe that sprays water with high pressure is installed on hoisting cross beam, the overall length of the collector pipe that sprays water with high pressure
Degree is more than tube product length, by adjusting the hoisting cross beam height, and the hydraulic pressure sprayed water with high pressure in collector pipe described in adjusting
And the water yield, can be with the outer wall cooling velocity of precise control steel pipe.
Further, the nozzle being in tilted layout and the angle of vertical line are 15 ~ 30 °, reality of the quantity according to production
Need setting.
Further, the automation control system includes instrumentation, control valve group, signal triggering device, transmission dress
Put, for realizing the whole process Automated condtrol that steel pipe On-line Control is cooled down.
The process of hot rolled seamless steel tube On-line Control cooling is carried out using above-mentioned cooling system, is comprised the following steps：
（1）To be held up and be sent to cooling rotating roller by the first turning device by the hot rolled seamless steel tube of sizing mill completely
On road, pipe pressing device is adjusted, start cooling rotating roller and control the rotary speed of steel pipe in 20 ~ 60r/min；
（2）Adjust the height of hoisting cross beam, it is ensured that the water jets under high pressure of the nozzle injection being in tilted layout all tiltedly is ejected into steel
Tube outer surface, adjusts the height of the ejecting device that sprays water with high pressure, it is ensured that water jets under high pressure is all injected on steel pipe inner wall, opens high pressure
Sprinkler head device and the collector pipe that sprays water with high pressure, wherein the ejecting device that sprays water with high pressure positioned at cooling rotating roller two ends takes phase
The mutual mode of alternating water delivery, control is sprayed water with high pressure the hydraulic pressure in ejecting device and the hydraulic pressure and water that spray water with high pressure in collector pipe
Amount, while cooling down to steel pipe inner wall and outer wall；
（3）Steel pipe is cooled to after the temperature of technological requirement, terminates cooling down by automation control system, while using setting
The blow device at cooling rotating roller two ends is placed in, the steel pipe inner wall residual water after cooling is removed, then filled by the second upset
Put and steel pipe is held up and is sent on cold rear rollgang, be delivered to cold bed；
（4）Start next Zhi Gangguan operating procedures（1）~（3）.
In above-mentioned process, when the On-line Control cooling system for being adopted is used first, the system is arranged on into heat
By the rolling line roller-way of roll process line, first turning device is set to be located at the rolling line roller-way side, second turning device
Positioned at cold rear rollgang side, and guarantee that the cooling rotating roller is arranged in parallel with the rolling line roller-way.
Compared with prior art, the characteristics of the utility model and beneficial effect is：
1. hot rolled seamless steel tube On-line Control cooling system of the present utility model and process will can go out after sizing mill
Hot rolled seamless steel tube, according to structure property demand water-cooled to arbitrary target temperature and to room temperature, possesses various from the condition of high temperature
Tissue modulation means.Such as：It is general for Q235,20#, Q345 etc. when controlling cooling termination temperature and being interval in ferrite transformation
The hot rolled seamless steel tube product such as logical structured steel pipe and line pipe, by the utility model the regulation and control of steel pipe microscopic structure are capable of achieving, and are kept away
Exempt from thick Widmannstatten structure to be formed, and the General Promotion of Steel Tube Rolling state property energy can be realized by refined crystalline strengthening, reduce pairing gold dollar
Element addition and the dependence of follow-up heat-treated offline；When controlling cooling termination temperature and being interval in bainitic transformation, by this practicality
It is new to be capable of achieving to lift the processing route of steel tube performance by phase transformation strengthening, and can according to demand develop the bayesian of high-strength tenacity
The high-strength hot-rolled seamless steel pipe of body class；When cooling termination temperature is controlled in the martensitic traoformation area compared with low temperature, by this practicality
New achievable direct quenching production technology, by direct quenching out-line quenching technique is replaced, and significantly reduces energy consumption cost, is contracted
The short production cycle.
2. in cooling procedure, by the way of pressure water jets impact cooling, cooling water can effectively be broken in high-temperature steel tube
The air film that surface is formed, improves the effective contact area of cooling water and steel tube surface, and then improves cooling effectiveness, increase cooling speed
Rate.
3. hot rolled seamless steel tube On-line Control cooling system of the present utility model is using the first turning device and the second upset
The arrangement form of device, is capable of achieving the free switching of control cooling-production technology and former rolling line air cooling production technology, it is easy to process
Bursting problem, it is ensured that what producing line was produced is smoothed out.
Description of the drawings
Fig. 1 is the arrangement schematic diagram of hot rolled seamless steel tube On-line Control cooling system of the present utility model；
Fig. 2 is the planar structure schematic diagram of the control cooling device of Fig. 1；
Wherein, 1- sizing mills, the rolling line roller-way of 2- hot rolling technologies, the turning devices of 3- first, the turning devices of 4- second, 5- is cold
But rotating roller, 6- blow devices, 7- sprays water with high pressure ejecting device, the cold rear rollgangs of 8-, 9- hoisting cross beams, 10- high pressure sprays
Water collector pipe, the nozzle that 11- is in tilted layout, 12- pipe pressing devices.
Specific embodiment
In description of the present utility model, the orientation of the instruction such as ' on ', ' under ', ' side ', ' end ' it should be noted that term
Or position relationship is, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplification is retouched
State, rather than indicate or imply indication device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to restriction of the present utility model.Additionally, term ' the first ', ' the second ' is only used for describing purpose, and can not
It is interpreted as indicating or implying relative importance.
In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill
Personnel can be implemented as basis, when the combination appearance of technical scheme is conflicting or cannot realize it will be understood that this technical side
The combination of case is not present, also not within the protection domain that the utility model is required.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term ' peace
Dress ', ' setting ', ' connection ' should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly
Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary,
The connection of two element internals is can also be, can be wireless connection, or wired connection.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
As long as additionally, technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict just can be combined with each other.
Below in conjunction with the accompanying drawings the utility model is described in further details with specific embodiment, described is to this practicality
New explanation rather than restriction.
Embodiment 1
A kind of hot rolled seamless steel tube On-line Control cooling system, its structure as shown in figure 1, including the first turning device 3,
Two turning devices 4, control cooling device, blow device 6 and automation control system, wherein first turning device 3 and institute
State the both sides that the second turning device 4 is symmetrically arranged in the control cooling device, and first turning device 3 and described the
Two turning devices 4 are located at respectively the rolling line roller-way 2 of hot rolling technology and the side of cold rear rollgang 8, and the first turning device 3 is used for
Hot rolled seamless steel tube is sent to into the control cooling device by the rolling line roller-way 2 of hot rolling technology, the second turning device 4 is used for will
Steel pipe after control cooling is finished is sent to cold rear rollgang 8 from the control cooling device.
Fig. 2 provide it is described control cooling device plane structure chart, including cooling rotating roller 5, spray water with high pressure cartridge nozzle
Put 7, spray water with high pressure collector pipe 10, wherein the ejecting device 7 that sprays water with high pressure is arranged at the two ends of the cooling rotating roller 5,
And on elevating lever, for cooling pipe inwall；The collector pipe 10 that sprays water with high pressure is arranged on the cooling rotating roller 5
Top, and being installed on hoisting cross beam 9, the length of the collector pipe 10 that sprays water with high pressure is 30m, the lower end of collector pipe 10 of spraying water with high pressure
The nozzle 11 that configuration is in tilted layout, nozzle is 20 ° with the angle of vertical line, and nozzle quantity is 5400.
Cooling rotating roller 5 side top is additionally provided with pipe pressing device 12, for aiding in steel pipe in cooling rotating roller 5
Realize rotation at a high speed in situ.
The blow device 6 is arranged at the two ends of the cooling rotating roller 5, specially the air-blowing spray of angle adjustable
Head, jet direction is in 0～45 ° with length of steel pipe azimuth axis, for the residual water of steel pipe inner wall after removing cooling.
The automation control system include instrumentation, control valve group, signal triggering device, transmission device, it is described from
Dynamic networked control systems are filled with first turning device, second turning device, the control cooling device and the purging
Electrical connection is put, for realizing the whole process Automated condtrol that steel pipe On-line Control is cooled down.
Said system is adopted to carry out external diameter for 457mm, thickness 25mm, the hot rolled seamless steel tube On-line Control of length 25m is cold
But process, comprises the following steps：
（1）When said system is used first, the system is arranged on by the rolling line roller-way of hot rolling technology line, makes described the
One turning device is located at the rolling line roller-way side, and second turning device is located at cold rear rollgang side, and guarantees institute
State cooling rotating roller parallel with the rolling line roller-way；Then the hot rolled seamless steel tube of sizing mill will completely be passed through by the first upset
Device holds up and is sent on cooling rotating roller, adjusts pipe pressing device, and starts cooling rotating roller, controls the rotation of steel pipe
Speed is in 40 ~ 50r/min；
（2）The height for adjusting hoisting cross beam is all tiltedly ejected into steel with the water jets under high pressure for guaranteeing the nozzle being in tilted layout injection
Tube outer surface, adjusts the height of the ejecting device that sprays water with high pressure, it is ensured that water jets under high pressure is all injected on steel pipe inner wall；Open high pressure
Sprinkler head device and the collector pipe that sprays water with high pressure, in cooling procedure, positioned at the shower nozzle that sprays water with high pressure at cooling rotating roller two ends
Device takes the mode of alternating spray, to lift the cooling uniformity on steel pipe inner wall length direction, controls the shower nozzle that sprays water with high pressure
Hydraulic pressure in device is 0.5 ~ 0.8MPa, control that the hydraulic pressure that sprays water with high pressure in collector pipe is 0.2 ~ 0.8MPa and discharge is 3000
~6000m3/ h, while cooling down to steel pipe inner wall and outer wall；
（3）Steel pipe is cooled to after the temperature of technological requirement, terminates cooling down by automation control system, while using setting
The blow device at cooling rotating roller two ends is placed in, the steel pipe inner wall residual water after cooling is removed, then filled by the second upset
Put that steel pipe is held up and is sent on cold rear rollgang and enter cold bed；
（4）Start next Zhi Gangguan operating procedures（1）~（3）.
Described hot rolled seamless steel tube Controlled cooling process method, the steel pipe for being controlled cooling is rolled by original
Line roller-way air cooling is delivered to cold bed；Steel pipe for needing to be controlled cooling, then using turning device by steel pipe prop up to
Controlled cooling process production is completed on line cooling Special rotary roller-way.Meanwhile, former rolling line roller-way takes Discrete control form, can be real
During feeding area stops, preparing upset, roller-way still can continue rotation to existing steel pipe after feeding area front roller-way and feeding area
Turn conveying steel pipe, it is ensured that the stable, continuous of On-line Control cooling technique, efficient implementation.
Embodiment 2
A kind of hot rolled seamless steel tube On-line Control cooling system, its structure is with embodiment 1, distinctive points：The present embodiment
Hot rolled seamless steel tube On-line Control cooling system the collector pipe that sprays water with high pressure length be 38m, nozzle quantity be 6800.
External diameter 219.1mm is carried out using said system, wall thickness 12mm, the hot rolled seamless steel tube On-line Control of length 36m is cold
But process, comprises the following steps：
（1）When said system is used first, the system is arranged on by the rolling line roller-way of hot rolling technology line, makes described the
One turning device is located at the rolling line roller-way side, and second turning device is located at cold rear rollgang side, and guarantees institute
State cooling rotating roller parallel with the rolling line roller-way；Then the hot rolled seamless steel tube of sizing mill will completely be passed through by the first upset
Device holds up and is sent on cooling rotating roller, adjusts pipe pressing device, starts cooling rotating roller and controls the rotation of steel pipe
Speed is in 20 ~ 40r/min；
（2）The height for adjusting hoisting cross beam is all tiltedly ejected into steel with the water jets under high pressure for guaranteeing the nozzle being in tilted layout injection
Tube outer surface, adjusts the height of the ejecting device that sprays water with high pressure, it is ensured that water jets under high pressure is all injected on steel pipe inner wall, opens high pressure
Sprinkler head device and the collector pipe that sprays water with high pressure, in cooling procedure, positioned at the shower nozzle that sprays water with high pressure at cooling rotating roller two ends
Device takes the mode for alternateing injection, and to lift the cooling uniformity on steel pipe inner wall length direction, control is sprayed water with high pressure
Hydraulic pressure in ejecting device is 0.5 ~ 0.8MPa, control that the hydraulic pressure that sprays water with high pressure in collector pipe is 0.2 ~ 0.8MPa and discharge is
3000~5500m3/ h, while cooling down to steel pipe inner wall and outer wall；
（3）Steel pipe is cooled to after the temperature of technological requirement, terminates cooling down by automation control system, while using setting
The blow device at cooling rotating roller two ends is placed in, the steel pipe inner wall residual water after cooling is removed, then filled by the second upset
Put that steel pipe is held up and is sent on cold rear rollgang and enter cold bed；
（4）Start next Zhi Gangguan operating procedures（1）~（3）.
Described hot rolled seamless steel tube Controlled cooling process method, the steel pipe for being controlled cooling is rolled by original
Line roller-way air cooling is delivered to cold bed；Steel pipe for needing to be controlled cooling, then using turning device by steel pipe prop up to
Controlled cooling process production is completed on line cooling Special rotary roller-way.Meanwhile, former rolling line roller-way takes Discrete control form, can be real
During feeding area stops, preparing upset, roller-way still can continue rotation to existing steel pipe after feeding area front roller-way and feeding area
Turn conveying steel pipe, it is ensured that the stable, continuous of On-line Control cooling technique, efficient implementation.
Claims (7)
1. a kind of hot rolled seamless steel tube On-line Control cooling system, it is characterised in that including the first turning device, the second upset dress
Put, control cooling device, blow device and automation control system, first turning device and second turning device pair
Title is arranged in the both sides of the control cooling device；The control cooling device includes cooling rotating roller, spray water with high pressure shower nozzle
Device, spray water with high pressure collector pipe, wherein the ejecting device that sprays water with high pressure is arranged at the two ends of the cooling rotating roller；It is described
The collector pipe that sprays water with high pressure is arranged on the cooling rotating roller top, described to spray water with high pressure what the configuration of collector pipe lower end was in tilted layout
Nozzle；The blow device is arranged at the two ends of the cooling rotating roller；The automation control system is turned over described first
The electrical connection of rotary device, second turning device, the control cooling device and the blow device.
2. a kind of hot rolled seamless steel tube On-line Control cooling system according to claim 1, it is characterised in that described first
Turning device and second turning device are located at respectively the rolling line roller-way of hot rolling technology and the side of cold rear rollgang.
3. a kind of hot rolled seamless steel tube On-line Control cooling system according to claim 1, it is characterised in that the cooling
Rotating roller side top is provided with pipe pressing device.
4. a kind of hot rolled seamless steel tube On-line Control cooling system according to claim 1, it is characterised in that the high pressure
Sprinkler head device is arranged on elevating lever, and it highly can be adjusted according to outer diameter of steel pipes dimensions.
5. a kind of hot rolled seamless steel tube On-line Control cooling system according to claim 1, it is characterised in that the high pressure
Water spray collector pipe is installed on hoisting cross beam, and the total length of the collector pipe that sprays water with high pressure is more than tube product length.
6. a kind of hot rolled seamless steel tube On-line Control cooling system according to claim 1, it is characterised in that the inclination
The nozzle of arrangement and the angle of vertical line are 15 ~ 30 °, and quantity is actually needed setting according to production.
7. a kind of hot rolled seamless steel tube On-line Control cooling system according to claim 1, it is characterised in that described
Automation control system includes instrumentation, control valve, signal triggering device, transmission device, for realizing steel pipe in line traffic control
Refrigeration whole process Automated condtrol but.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157417.XU CN206153294U (en) | 2016-10-25 | 2016-10-25 | Hot -rolling seamless pipe on -line control cooling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157417.XU CN206153294U (en) | 2016-10-25 | 2016-10-25 | Hot -rolling seamless pipe on -line control cooling system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108676984A (en) * | 2018-06-14 | 2018-10-19 | 扬州诚德重工有限公司 | Online Multifunctional multistage control cooling type quenches cold bed |
| CN111589885A (en) * | 2020-04-29 | 2020-08-28 | 东北大学 | Online cooling system for hot-rolled seamless steel pipe and arrangement method of cooling device on online cooling system |
-
2016
- 2016-10-25 CN CN201621157417.XU patent/CN206153294U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108676984A (en) * | 2018-06-14 | 2018-10-19 | 扬州诚德重工有限公司 | Online Multifunctional multistage control cooling type quenches cold bed |
| CN108676984B (en) * | 2018-06-14 | 2024-06-11 | 扬州诚德重工有限公司 | Cooling method of on-line multifunctional multi-station control cooling type quenching cooling bed |
| CN111589885A (en) * | 2020-04-29 | 2020-08-28 | 东北大学 | Online cooling system for hot-rolled seamless steel pipe and arrangement method of cooling device on online cooling system |
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