CN108971244A - Rolled steel cooling means - Google Patents
Rolled steel cooling means Download PDFInfo
- Publication number
- CN108971244A CN108971244A CN201811119504.XA CN201811119504A CN108971244A CN 108971244 A CN108971244 A CN 108971244A CN 201811119504 A CN201811119504 A CN 201811119504A CN 108971244 A CN108971244 A CN 108971244A
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- CN
- China
- Prior art keywords
- cooling
- water
- rolled steel
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- section
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—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
-
- 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
- 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
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
Abstract
The invention discloses a kind of rolled steel cooling means, rolled steel cooling means includes: to cool down rolled steel sequentially through the first cooling section and the second cooling section；First cooling section is air-cooled to carry out rolled steel, and rolled steel temperature after cooling is 960-1050 DEG C；Second cooling section is that will carry out Water cooling sequentially through the first Water cooling area, the second Water cooling area, third Water cooling area, the 4th Water cooling area and the 5th Water cooling area by the first cooling section rolled steel after cooling.It realizes that the type of cooling is good, can effectively improve the effect of the internal soundness of steel after cooling.
Description
Technical field
The present invention relates to steel cooling procedure fields, and in particular, to rolled steel cooling means.
Background technique
Rolled steel, abbreviation steel rolling are the pressing process for changing steel ingot, steel billet shape between the roll of rotation.Its
Purpose is the shape needed in order to obtain, such as: steel plate, strip, wire rod and various profiles etc., meanwhile, and in its rolling
Improve the internal soundness of steel in the process.
And cold-rolled steel needs to cool down it after rolling, cooling procedure often plays its steel product quality extremely heavy
The effect wanted.Traditional bar often realizes Heat Treatment technique by the way of rapid cooling after rolling, i.e., be 900- by finishing temperature
1100 DEG C of reinforcing bar directly carries out surface layer quenching by water cooler is cooling, so that its surface temperature is quickly down to 200-300 DEG C, then
Waste heat is spread out of by rolled piece center portion in air, so that the temperature of steel is reached 550-650 DEG C of self tempering temperature, to reach raising steel
Intensity, plasticity improve the purpose of toughness, and steel is made to obtain good comprehensive performance.And the control cooling of this traditional bar
Mode is applied in screw-thread steel production, often because cooler is generally longer, and generallys use continuous arrangement form, cold rear temperature
The reasons such as turnaround time is short cause it Malpighian layer occur so that Surface of Rod Bar is easy Quench, and martensite attribute is firmly crisp, though
Right intensity improves but toughness declines, and leads to substantially reducing for its service performance.
Therefore it provides a kind of type of cooling is good, it can effectively improve the internal soundness of steel after cooling, effectively avoid it
The problem of rolled steel cooling means that martensitic structure occurs is urgent need to resolve of the present invention.
Summary of the invention
For the above-mentioned prior art, the purpose of the present invention is to provide a kind of type of cooling is good, cooling can effectively improve
The internal soundness of steel afterwards, the rolled steel cooling means for effectively avoiding its martensitic structure from occurring.
To achieve the goals above, the present invention provides a kind of rolled steel cooling means, wherein the rolled steel is cold
But method includes: to cool down rolled steel sequentially through the first cooling section and the second cooling section；Wherein,
First cooling section is air-cooled to carry out rolled steel, and rolled steel temperature after cooling is 960-1050
℃；
Second cooling section is will be by the first cooling section rolled steel after cooling sequentially through the first Water cooling
Area, the second Water cooling area, third Water cooling area, the 4th Water cooling area and the 5th Water cooling area carry out Water cooling；
And
The hydraulic pressure of cooling water is 0.7-1.1MPa in first Water cooling area；
The hydraulic pressure of cooling water is 0.8-1.2MPa in second Water cooling area；
The hydraulic pressure of cooling water is 1.0-1.4MPa in third Water cooling area；
The hydraulic pressure of cooling water is 1.0-1.4MPa in the 4th Water cooling area；
The hydraulic pressure of cooling water is 0.7-1.1MPa in the 5th Water cooling area.
Preferably, the cooling time of first cooling section is 5-10s, and cooling rate is 5-10 DEG C/s.
Preferably, in second cooling section, the flow of cooling water is 270-330L/s during Water cooling.
Preferably, the flow of cooling water is to be controlled by control valve during Water cooling.
Preferably, the temperature through first Water cooling area rolled steel after cooling is 870-950 DEG C；
Temperature through second Water cooling area rolled steel after cooling is 780-860 DEG C；
Temperature through third Water cooling area rolled steel after cooling is 660-740 DEG C；
Temperature through the 4th Water cooling area rolled steel after cooling is 540-620 DEG C；
Temperature through the 5th Water cooling area rolled steel after cooling is 360-440 DEG C.
Through the above technical solutions, the present invention cools down the steel after rolling sequentially through two cooling sections, and will
First cooling section is set as air-cooled, and carries out certain control to the temperature after air-cooled, then pass it through and wear water cooling including five
But second cooling section in area is cooled down, while carrying out segmentation restriction to the hydraulic pressure during Water cooling, so that passing through
Aforesaid way steel rolling after cooling will not because of the problems such as chilling caused by its internal soundness problem, while also can effectively avoid its surface
The formation of martensitic structure.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Specific embodiment
Detailed description of the preferred embodiments below.It should be understood that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
The present invention provides a kind of rolled steel cooling means, wherein the rolled steel cooling means includes: that will roll
Steel are cooled down sequentially through the first cooling section and the second cooling section；Wherein,
First cooling section is air-cooled to carry out rolled steel, and rolled steel temperature after cooling is 960-1050
℃；
Second cooling section is will be by the first cooling section rolled steel after cooling sequentially through the first Water cooling
Area, the second Water cooling area, third Water cooling area, the 4th Water cooling area and the 5th Water cooling area carry out Water cooling；
And
The hydraulic pressure of cooling water is 0.7-1.1MPa in first Water cooling area；
The hydraulic pressure of cooling water is 0.8-1.2MPa in second Water cooling area；
The hydraulic pressure of cooling water is 1.0-1.4MPa in third Water cooling area；
The hydraulic pressure of cooling water is 1.0-1.4MPa in the 4th Water cooling area；
The hydraulic pressure of cooling water is 0.7-1.1MPa in the 5th Water cooling area.
The present invention cools down the steel after rolling sequentially through two cooling sections, and sets wind for the first cooling section
It is cold, and certain control is carried out to the temperature after air-cooled, then pass it through the second cooling section including five Water cooling areas into
Row cooling, while segmentation restriction is carried out to the hydraulic pressure during Water cooling, so that after cooling through the above way roll
Steel will not because of the problems such as chilling caused by its internal soundness problem, while also can effectively avoid the formation of its surface martensite tissue.
The setting of the cooling condition of first cooling section can carry out certain adjusting, for example, in one kind of the invention
In preferred embodiment, in order to further increase its cooling effect, the cooling time of first cooling section is 5-10s, cold
But rate is 5-10 DEG C/s.
The flow of cooling water can carry out certain adjusting according to practical during Water cooling, certainly, of the invention
In one kind more preferably embodiment, in second cooling section, the flow of cooling water is 270- during Water cooling
330L/s。
The control of cooling water flow can be configured by the way of commonly used in the art during Water cooling, example
Such as, in a kind of preferred embodiment, the flow of cooling water is to be controlled by control valve during Water cooling.When
So, the mode that its flow is adjusted can also can be used in other herein, and the present invention is not limited thereto.
In a kind of more preferably embodiment of the invention, to enable after cooling to each Water cooling area
Rolled steel carry out certain temperature control so that its effect after cooling is more preferable, further increase its internal soundness, pass through
The temperature of first Water cooling area rolled steel after cooling is 870-950 DEG C.
Similarly, the temperature through second Water cooling area rolled steel after cooling is 780-860 DEG C.
Similarly, the temperature through third Water cooling area rolled steel after cooling is 660-740 DEG C.
Similarly, the temperature through the 4th Water cooling area rolled steel after cooling is 540-620 DEG C.
Similarly, the temperature through the 5th Water cooling area rolled steel after cooling is 360-440 DEG C.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail within the scope of the technical concept of the present invention can be with various simple variants of the technical solution of the present invention are made, this
A little simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (5)
1. a kind of rolled steel cooling means, which is characterized in that the rolled steel cooling means include: by rolled steel sequentially
It is cooled down by the first cooling section and the second cooling section；Wherein,
First cooling section is air-cooled to carry out rolled steel, and rolled steel temperature after cooling is 960-1050 DEG C；
Second cooling section is will be by the first cooling section rolled steel after cooling sequentially through the first Water cooling area, the
Two Water cooling areas, third Water cooling area, the 4th Water cooling area and the 5th Water cooling area carry out Water cooling；And
The hydraulic pressure of cooling water is 0.7-1.1MPa in first Water cooling area；
The hydraulic pressure of cooling water is 0.8-1.2MPa in second Water cooling area；
The hydraulic pressure of cooling water is 1.0-1.4MPa in third Water cooling area；
The hydraulic pressure of cooling water is 1.0-1.4MPa in the 4th Water cooling area；
The hydraulic pressure of cooling water is 0.7-1.1MPa in the 5th Water cooling area.
2. rolled steel cooling means according to claim 1, which is characterized in that the cooling time of first cooling section
For 5-10s, cooling rate is 5-10 DEG C/s.
3. rolled steel cooling means according to claim 1 or 2, which is characterized in that in second cooling section, wear water
The flow of cooling water is 270-330L/s in cooling procedure.
4. rolled steel cooling means according to claim 3, which is characterized in that the stream of cooling water during Water cooling
Amount is to be controlled by control valve.
5. rolled steel cooling means according to claim 1 or 2, which is characterized in that through first Water cooling area
The temperature of rolled steel after cooling is 870-950 DEG C；
Temperature through second Water cooling area rolled steel after cooling is 780-860 DEG C；
Temperature through third Water cooling area rolled steel after cooling is 660-740 DEG C；
Temperature through the 4th Water cooling area rolled steel after cooling is 540-620 DEG C；
Temperature through the 5th Water cooling area rolled steel after cooling is 360-440 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119504.XA CN108971244A (en) | 2018-09-25 | 2018-09-25 | Rolled steel cooling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811119504.XA CN108971244A (en) | 2018-09-25 | 2018-09-25 | Rolled steel cooling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108971244A true CN108971244A (en) | 2018-12-11 |
Family
ID=64543957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811119504.XA Pending CN108971244A (en) | 2018-09-25 | 2018-09-25 | Rolled steel cooling means |
Country Status (1)
| Country | Link |
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| CN (1) | CN108971244A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090970A (en) * | 2020-08-28 | 2020-12-18 | 中冶华天工程技术有限公司 | Water cooling control system and control method for long material rolling |
| CN112090968A (en) * | 2020-08-28 | 2020-12-18 | 中冶华天工程技术有限公司 | Water cooling control system and control method for long material rolling |
| CN112090969A (en) * | 2020-08-28 | 2020-12-18 | 中冶华天工程技术有限公司 | Through water cooling control method and system for long material rolling |
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| CN1793389A (en) * | 2005-12-26 | 2006-06-28 | 广州双菱钢铁工业有限公司 | Process for producing British standard 460 grade thread reinforcing steel by ordinary carbon steel |
| CN1927482A (en) * | 2005-09-07 | 2007-03-14 | 鞍山市穗丰草制品厂 | Production facility and method for high-intensity packing steel belt |
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| CN107185968A (en) * | 2017-06-21 | 2017-09-22 | 北京科技大学 | A kind of excellent special steel bar controlled rolling and controlled cooling method |
| CN206966330U (en) * | 2017-07-26 | 2018-02-06 | 新疆昆玉钢铁有限公司 | A kind of screw-thread steel controlled rolling cooling device |
| CN107855368A (en) * | 2017-10-24 | 2018-03-30 | 芜湖新兴铸管有限责任公司 | Cooling means after steel rolling |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1927482A (en) * | 2005-09-07 | 2007-03-14 | 鞍山市穗丰草制品厂 | Production facility and method for high-intensity packing steel belt |
| CN1793389A (en) * | 2005-12-26 | 2006-06-28 | 广州双菱钢铁工业有限公司 | Process for producing British standard 460 grade thread reinforcing steel by ordinary carbon steel |
| CN101851700A (en) * | 2009-10-13 | 2010-10-06 | 上海泽奇炉业有限公司 | Online water cooling method and equipment |
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| CN107185968A (en) * | 2017-06-21 | 2017-09-22 | 北京科技大学 | A kind of excellent special steel bar controlled rolling and controlled cooling method |
| CN206966330U (en) * | 2017-07-26 | 2018-02-06 | 新疆昆玉钢铁有限公司 | A kind of screw-thread steel controlled rolling cooling device |
| CN107855368A (en) * | 2017-10-24 | 2018-03-30 | 芜湖新兴铸管有限责任公司 | Cooling means after steel rolling |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112090970A (en) * | 2020-08-28 | 2020-12-18 | 中冶华天工程技术有限公司 | Water cooling control system and control method for long material rolling |
| CN112090968A (en) * | 2020-08-28 | 2020-12-18 | 中冶华天工程技术有限公司 | Water cooling control system and control method for long material rolling |
| CN112090969A (en) * | 2020-08-28 | 2020-12-18 | 中冶华天工程技术有限公司 | Through water cooling control method and system for long material rolling |
| CN112090968B (en) * | 2020-08-28 | 2022-03-25 | 中冶华天工程技术有限公司 | Water cooling control system and control method for long material rolling |
| CN112090970B (en) * | 2020-08-28 | 2022-04-22 | 中冶华天工程技术有限公司 | Water cooling control system and control method for long material rolling |
| CN112090969B (en) * | 2020-08-28 | 2022-04-22 | 中冶华天工程技术有限公司 | Through water cooling control method and system for long material rolling |
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Application publication date: 20181211 |