CN106311763A - Annular jet cooling device for controlled cooling of hot-rolled seamless steel tubes - Google Patents
Annular jet cooling device for controlled cooling of hot-rolled seamless steel tubes Download PDFInfo
- Publication number
- CN106311763A CN106311763A CN201610940237.7A CN201610940237A CN106311763A CN 106311763 A CN106311763 A CN 106311763A CN 201610940237 A CN201610940237 A CN 201610940237A CN 106311763 A CN106311763 A CN 106311763A
- Authority
- CN
- China
- Prior art keywords
- cooling
- half water
- water ring
- water spray
- lower half
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
- B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B2045/0227—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for tubes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
An annular jet cooling device for controlled cooling of hot-rolled seamless steel tubes comprises an upper half water spray ring and a lower half water spray ring. The upper half water spray ring and the lower half water spray ring are identical in structure and symmetrically arranged and communicate with a bypass flow collector pipe. An adjusting valve group is connected between the water spray rings and the bypass flow collector pipe and achieves control over the water spray flow and the water pressure. The outer surfaces of the water spray rings are provided with water inlets. The inner surfaces of the water spray rings are provided with a plurality of cooling nozzles, wherein the cooling nozzles are sequentially distributed. A cooling compensation nozzle is installed between the side ends of the middle attached faces of the upper half water spray ring and the lower half water spray ring. The jet direction of the cooling nozzles and the moving direction of a steel tube form an included angle. The jet direction is towards the positive direction or the reverse direction of the moving direction of the steel tube. According to the annular jet cooling device for controlled cooling of the hot-rolled seamless steel tubes, the water spray flows of the upper half water spray ring and the lower half water spray ring are independently set, controlled cooling can be carried out on conventional hot-rolled seamless steel tubes of any diameters through setting of the number of the opened water spray rings, the water pressure and other parameters, the finish cooling temperature can be accurately controlled, and the annular jet cooling device for controlled cooling of the hot-rolled seamless steel tubes is higher in applicability and significantly improves the cooling evenness.
Description
Technical field
The invention belongs to hot rolled seamless steel tube production technical field, particularly relate to a kind of hot rolled seamless steel tube and control cooling
Use annular jet chiller.
Background technology
For a long time, the hot rolled seamless steel tube particularity due to its production technology and the complexity of ring section, with hot rolling
Sheet material, section bar, Bar Wire Product are compared, and during Rolling Production, lack Controlled Rolling And Controlled Cooling means, and then cannot realize effective
Structure property regulates and controls.Promote its mechanical property to improve the microstructure of hot rolled seamless steel tube, rely only on interpolation at present
Alloying element or follow-up off-line heat treatment step, cause significantly improving and the reduction of production efficiency of production cost.If energy
Enough realize the cooling of the On-line Control after tubing hot rolling, then can realize the structure property regulation and control of hot rolled seamless steel tube, and can substantially drop
The manufacturing cost of low hot rolled seamless steel tube, the most also the tube product for higher quality provides production technology means.Therefore, right
More and more higher in the attention degree of the On-line Control cooling technology of hot rolled seamless steel tube, and it is suitable for hot rolling in the urgent need to developing
The cooling device of seamless steel pipe On-line Control cooling technique.
At present, control the development rapid deployment of cooling device for hot rolled seamless steel tube, and occurred
Multiple based on different principle and the relevant cooling device scheme of form, but, these existing technical schemes are the most still
Come with some shortcomings part, specific as follows:
1. the Chinese patent application of Publication No. CN103264054A, it discloses a kind of steel pipe homogeneous cooling apparatus,
In this patent formula, the adjustable nozzle on cooling water tank has been arranged to a water spray spraying water outer wall of steel pipe by it
Ring, the centrage of water ring and the traffic direction of steel pipe are 5 °～the angle of 175 °, and logical supercooled water dash mechanism and cooling
Water water spraying mechanism coordinates the cooling realized steel pipe, and cooling water water spraying mechanism maintains a normally open state.
But, in above-mentioned patent formula, the scalable means of cooling water water spraying mechanism are the most clearly mentioned, and for
When the steel pipe of different-thickness specification cools down, in order to meet the demand for control of different final cooling temperature, water ring is opened quantity and is
Important regulating measure, but the cooling water water spraying mechanism in patent formula is normally open, has lacked regulating measure, also result in
The waste of water resource.
2. the Chinese patent application of Publication No. CN101570813A, it discloses a kind of directly quenching seamless steel pipes dress
Putting, in this patent formula, its outer surface chiller is made up of annular cooler, and inner surface chiller is shaft-like, and position
In the top of variable-angle roller-way, and insert in the middle of outer surface annular cooler.
But, although during by steel pipe market to the annular inside of cooler and inner surface cooler outside, it is possible to implement
Quenching technical, but this quenching unit cannot meet the demand controlling cooling, the most just cannot need to realize end according to structure property
The accurate control of cold temperature.
3. the Chinese patent application of Publication No. CN201455003U, it discloses a kind of seamless pipe controlled rolling and controlled cooling that realizes
Device, in this patent formula, it is uniformly arranged being provided with the shower of some nozzles around water ring axis and constitutes cage knot
Structure, and spray nozzle axis and vertical line be 5 °～the angle of 20 °, thus steel pipe circumferencial direction is implemented cooling.
But, the physical dimension of this device needs the seamless steel pipe with certain size to match, and causes this device to fit
Steel pipe specification be restricted, owing to arrangement of nozzles form is the most single, therefore, it is difficult to Effective Regulation steel pipe circumferencial direction
Cooling uniformity.
4. the Chinese patent application of Publication No. CN86202942U, it discloses a kind of steel pipe continuous controlled cooling equipment,
In this patent formula, it utilizes the cyclone water formed in cooler to cool down steel pipe.
But, use the souring of rotary water current to carry out cooling pipe, due to the poor controllability of cyclone water in cooling procedure,
It is difficult to control accurately final cooling temperature.
Summary of the invention
The problem existed for prior art, it is cold that the present invention provides a kind of hot rolled seamless steel tube to control cooling annular jet
Radiator cooler, effectively overcomes the weak point of existing chiller, and the chiller of the present invention has the higher suitability, it is possible to
Control the final cooling temperature of steel pipe accurately, and chiller have employed jet impulse refrigerating mode, has stronger cooling capacity,
And it is remarkably improved cooling uniformity.
To achieve these goals, the present invention adopts the following technical scheme that a kind of hot rolled seamless steel tube controls cooling ring
Shape jet chiller, it is arranged between the roller-way of cooling zone, and some annular jet chillers are one group, can edge as required
Roller-way conveying direction and dispose many groups to meet process requirements.
A kind of hot rolled seamless steel tube controls cooling annular jet chiller, sprays water including upper half water ring and lower half
Ring, described upper half water ring is identical with lower half water ring structure and is symmetrical arranged, upper half water ring and lower half water ring respectively with
Segregated collection pipe is connected, and between upper half water ring and segregated collection pipe, all connects between lower half water ring and segregated collection pipe
It is connected to regulate valve group, by segregated collection pipe and regulation valve group to upper half water ring and the spray flow of lower half water ring and hydraulic pressure
It is controlled.
The water pressure range of accommodation of described annular jet chiller is 0.2～0.8MPa.
Outer surface at described upper half water ring and lower half water ring arranges water inlet, sprays water at upper half water ring and lower half
Ring inner surface arranges cooling nozzle, and cooling nozzle quantity is some and ordered distribution, the most equally arranges, and
Width along described annular jet chiller configures multiple rows of.
Middle binding face side at described upper half water ring Yu lower half water ring is provided with cooling and compensates nozzle.
The jet direction of described cooling nozzle and steel pipe traffic direction have angle.
The jet direction of described cooling nozzle is towards the forward or reverse of steel pipe traffic direction.
Beneficial effects of the present invention:
The annular jet chiller of the present invention possesses the independence of control, can be according to product of production line outline process requirements
Arrange some groups flexibly；By upper half water ring in annular jet chiller and lower half water ring spray flow are carried out solely
It is fixed to erect, and by the parameters such as unlatching quantity, opening ways, spray flow and the hydraulic pressure of water ring are set, can be right
The conventional heat of arbitrary specification (, between 200mm～460mm, wall thickness range is between 10mm～60mm for outer diameter of steel pipes scope)
Roll seamless steel pipe to implement to control cooling, and final cooling temperature is accurately controlled in the range of 150 DEG C～750 DEG C, makes the present invention have
There is the higher suitability；On the annular jet chiller of the present invention, the nozzle of configuration goes out flow path direction with steel pipe is specific angle
Degree, and by jet impulse cooling in the way of cool down, which can promote cool down water steel tube surface instantaneous in order
Flow and break up moisture film, and then being obviously improved the uniformity of cooling capacity and cooling.
Accompanying drawing explanation
Fig. 1 is that a kind of hot rolled seamless steel tube of the present invention controls cooling annular jet chiller structural representation；
In figure, 1 upper half water ring, 2 lower half water rings, 3 water inlets, 4 cooling nozzles, 5 coolings compensate spray
Mouth.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of hot rolled seamless steel tube controls cooling annular jet chiller, including upper half water ring 1
And lower half water ring 2, described upper half water ring 1 is identical with lower half water ring 2 structure and is symmetrical arranged, upper half water ring 1 and under
Half water ring 2 is connected with segregated collection pipe respectively, between upper half water ring 1 and segregated collection pipe, lower half water ring 2 with point
It is respectively connected with regulation valve group between adfluxion water pipe, by segregated collection pipe and regulation valve group, upper half water ring 1 and lower half is sprayed water
Spray flow and the hydraulic pressure of ring 2 are controlled, and water pressure range of accommodation is 0.2～0.8MPa.
Outer surface at described upper half water ring 1 and lower half water ring 2 arranges water inlet 3, in upper half water ring 1 and lower half
Water ring 2 inner surface arranges cooling nozzle 4, and cooling nozzle 4 is the most equally arranged, and along annular jet
The width of chiller arranges 3～8 rows.
Middle binding face side at described upper half water ring 1 with lower half water ring 2 is provided with cooling and compensates nozzle 5.Logical
Supercooling compensates nozzle 5 can solve that inhomogeneous cooling that middle the binding face of upper and lower half water ring causes because cooling down blind spot is even asks
Topic.
The jet direction of described cooling nozzle 4 and steel pipe traffic direction have angle.
The jet direction of described cooling nozzle 4 is towards the forward or reverse of steel pipe traffic direction.
During actually used, according to steel pipe specification and process requirements, a number of annular jet cooling dress need to be configured
Putting group, chiller group is made up of a number of annular jet chiller, and the annular jet in each chiller group is cold
Radiator cooler quantity can be set to 4～8.Chiller group is arranged between the roller-way of cooling zone, according to actual needs, along roller
The actual quantity of road conveying direction configuration chiller group.Meanwhile, chiller group needs equipped lifting height-regulating mechanism, it is ensured that cold
Annular jet chiller in radiator cooler group can adjust height, and no matter how the caliber of steel pipe changes, and passes through height adjustment
All can ensure that annular jet chiller coincides with the longitudinal center line of steel pipe.
Actual specification according to steel pipe and process requirements, be set cooling parameter, specifically includes in chiller group
The unlatching quantity of annular jet chiller, opening ways, spray flow, hydraulic pressure etc..Upper half spray in annular jet chiller
The spray flow of water ring 1 and lower half water ring 2 needs independent setting, and then ensures that steel pipe cooling in a circumferential direction is uniform
Property.When steel pipe is passed inside annular jet chiller by roller-way, the cooling of steel pipe can be realized.
Further, since the jet direction of cooling nozzle has angle with steel pipe traffic direction, and cool down nozzle with jet
Steel pipe is cooled down by the mode of impinging cooling, can promote that cooling down water at the instantaneous olderly flowage of steel tube surface and breaks up water
Film, it is achieved that the further lifting of cooling capacity, the most preferably ensure that cooling uniformity.
Scheme in embodiment is also not used to limit the scope of patent protection of the present invention, all without departing from the present invention do etc.
Effect is implemented or change, is both contained in the scope of the claims of this case.
Claims (6)
1. a hot rolled seamless steel tube controls cooling annular jet chiller, it is characterised in that: include upper half water ring and
Lower half water ring, described upper half water ring is identical with lower half water ring structure and is symmetrical arranged, upper half water ring and lower half water spray
Ring is connected with segregated collection pipe respectively, between upper half water ring and segregated collection pipe, lower half water ring and segregated collection pipe
Between be respectively connected with regulation valve group, by segregated collection pipe and regulation valve group to upper half water ring and the water jet of lower half water ring
Amount and hydraulic pressure are controlled.
A kind of hot rolled seamless steel tube the most according to claim 1 controls cooling annular jet chiller, and its feature exists
In: the water pressure range of accommodation of described annular jet chiller is 0.2～0.8MPa.
A kind of hot rolled seamless steel tube the most according to claim 1 controls cooling annular jet chiller, and its feature exists
In: the outer surface at described upper half water ring and lower half water ring arranges water inlet, in upper half water ring and lower half water ring
Surface configuration cooling nozzle, nozzle quantity is some and ordered distribution in cooling, the most equally arranges, and along
The width configuration of described annular jet chiller is multiple rows of.
A kind of hot rolled seamless steel tube the most according to claim 1 controls cooling annular jet chiller, and its feature exists
In: the middle binding face side at described upper half water ring Yu lower half water ring is provided with cooling and compensates nozzle.
A kind of hot rolled seamless steel tube the most according to claim 3 controls cooling annular jet chiller, and its feature exists
In: the jet direction of described cooling nozzle and steel pipe traffic direction have angle.
A kind of hot rolled seamless steel tube the most according to claim 5 controls cooling annular jet chiller, and its feature exists
In: the jet direction of described cooling nozzle is towards the forward or reverse of steel pipe traffic direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940237.7A CN106311763B (en) | 2016-10-25 | 2016-10-25 | A kind of hot rolled seamless steel tube control is cooling to use annular jet cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610940237.7A CN106311763B (en) | 2016-10-25 | 2016-10-25 | A kind of hot rolled seamless steel tube control is cooling to use annular jet cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106311763A true CN106311763A (en) | 2017-01-11 |
| CN106311763B CN106311763B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610940237.7A Active CN106311763B (en) | 2016-10-25 | 2016-10-25 | A kind of hot rolled seamless steel tube control is cooling to use annular jet cooling device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008598A (en) * | 2017-06-16 | 2017-08-04 | 蚌埠抒阳自动化设备制造有限公司 | A kind of comprehensive sheet material paint spraying apparatus |
| CN107739794A (en) * | 2017-11-24 | 2018-02-27 | 北京京诚之星科技开发有限公司 | Press quenching device, the production line of steel pipe Tempering and Quenching and production technology |
| CN108435799A (en) * | 2018-04-07 | 2018-08-24 | 新疆八钢铁股份有限公司 | Trailing type loop back roll external cooling device |
| CN109248922A (en) * | 2017-07-13 | 2019-01-22 | 鞍钢股份有限公司 | A kind of cooling hydrosphere of hot seamless tube sizing roll |
| CN110508625A (en) * | 2019-10-17 | 2019-11-29 | 东北大学 | On-line Control cooling device and method for middle small-caliber hot rolling seamless steel |
| CN111417472A (en) * | 2017-11-29 | 2020-07-14 | 日本制铁株式会社 | Piercing machine and method for manufacturing seamless metal pipe using same |
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| JPS5939407A (en) * | 1982-08-31 | 1984-03-03 | Kawasaki Steel Corp | Production of seamless steel pipe |
| JPS6149709A (en) * | 1984-08-15 | 1986-03-11 | Nippon Steel Corp | Method for preventing wall-thickness deviation of steel pipe in hot stage |
| CN101378856A (en) * | 2006-08-18 | 2009-03-04 | 新日本制铁株式会社 | Method of cooling steel sheet |
| CN101622083A (en) * | 2007-02-26 | 2010-01-06 | 杰富意钢铁株式会社 | Device and method for cooling hot-rolled steel strip |
| CN201455003U (en) * | 2009-08-26 | 2010-05-12 | 鞍钢股份有限公司 | Device for controlling rolling and cooling of seamless pipes |
| CN101972782A (en) * | 2010-09-15 | 2011-02-16 | 北京科技大学 | Device and method for cooling intermediate rolled blank of hot rolled strip |
| CN103264054A (en) * | 2013-06-04 | 2013-08-28 | 中冶赛迪工程技术股份有限公司 | Steel tube even cooling device |
| CN205200512U (en) * | 2015-08-18 | 2016-05-04 | 广东远光电缆实业有限公司 | Hold cavate spray cooling device |
| CN106001139A (en) * | 2016-07-06 | 2016-10-12 | 湖北大帆金属制品有限公司 | Brusher |
| CN206153295U (en) * | 2016-10-25 | 2017-05-10 | 东北大学 | Hot -rolling seamless pipe control cooling is with annular impingement air cooling device |
-
2016
- 2016-10-25 CN CN201610940237.7A patent/CN106311763B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5939407A (en) * | 1982-08-31 | 1984-03-03 | Kawasaki Steel Corp | Production of seamless steel pipe |
| JPS6149709A (en) * | 1984-08-15 | 1986-03-11 | Nippon Steel Corp | Method for preventing wall-thickness deviation of steel pipe in hot stage |
| CN101378856A (en) * | 2006-08-18 | 2009-03-04 | 新日本制铁株式会社 | Method of cooling steel sheet |
| CN101622083A (en) * | 2007-02-26 | 2010-01-06 | 杰富意钢铁株式会社 | Device and method for cooling hot-rolled steel strip |
| CN201455003U (en) * | 2009-08-26 | 2010-05-12 | 鞍钢股份有限公司 | Device for controlling rolling and cooling of seamless pipes |
| CN101972782A (en) * | 2010-09-15 | 2011-02-16 | 北京科技大学 | Device and method for cooling intermediate rolled blank of hot rolled strip |
| CN103264054A (en) * | 2013-06-04 | 2013-08-28 | 中冶赛迪工程技术股份有限公司 | Steel tube even cooling device |
| CN205200512U (en) * | 2015-08-18 | 2016-05-04 | 广东远光电缆实业有限公司 | Hold cavate spray cooling device |
| CN106001139A (en) * | 2016-07-06 | 2016-10-12 | 湖北大帆金属制品有限公司 | Brusher |
| CN206153295U (en) * | 2016-10-25 | 2017-05-10 | 东北大学 | Hot -rolling seamless pipe control cooling is with annular impingement air cooling device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008598A (en) * | 2017-06-16 | 2017-08-04 | 蚌埠抒阳自动化设备制造有限公司 | A kind of comprehensive sheet material paint spraying apparatus |
| CN109248922A (en) * | 2017-07-13 | 2019-01-22 | 鞍钢股份有限公司 | A kind of cooling hydrosphere of hot seamless tube sizing roll |
| CN107739794A (en) * | 2017-11-24 | 2018-02-27 | 北京京诚之星科技开发有限公司 | Press quenching device, the production line of steel pipe Tempering and Quenching and production technology |
| CN111417472A (en) * | 2017-11-29 | 2020-07-14 | 日本制铁株式会社 | Piercing machine and method for manufacturing seamless metal pipe using same |
| CN111417472B (en) * | 2017-11-29 | 2022-05-27 | 日本制铁株式会社 | Piercing machine and method for manufacturing seamless metal pipe using same |
| CN108435799A (en) * | 2018-04-07 | 2018-08-24 | 新疆八钢铁股份有限公司 | Trailing type loop back roll external cooling device |
| CN110508625A (en) * | 2019-10-17 | 2019-11-29 | 东北大学 | On-line Control cooling device and method for middle small-caliber hot rolling seamless steel |
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| Publication number | Publication date |
|---|---|
| CN106311763B (en) | 2019-04-26 |
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