CN104001742A - Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units - Google Patents
Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units Download PDFInfo
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- CN104001742A CN104001742A CN201410215269.1A CN201410215269A CN104001742A CN 104001742 A CN104001742 A CN 104001742A CN 201410215269 A CN201410215269 A CN 201410215269A CN 104001742 A CN104001742 A CN 104001742A
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Abstract
Provided is a method for achieving controlled cooling on rolled pieces between and after bar finishing mill units. Each bar finishing mill unit is formed by connecting multiple rolling mills in series. The method includes the following steps that first cooling water tanks are arranged among the rolling mills of the bar finishing mill units, second cooling water tanks are arranged behind the bar finishing mill units, and the first cooling water tanks and the second cooling water tanks work synchronously. Conditions are created for hot press rolling, the controlled cooling effect is better improved, and therefore good grain structures and performance of products are achieved.
Description
Technical field
The present invention relates to a kind of rolled piece between finishing bar mill group and after unit be realized to the cooling method of Synchronization Control.
Background technology
For bar production, rolled piece temperature in entering finish rolling milling train often easily raises, and makes the crystallite dimension of finished product become large, affects and reduces its performance; And also need therefore to need by being water-cooled to certain temperature through the product of mm finishing mill unit, to obtain good structure property.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of to controlling the layout method of cooling water tank between the milling train of finishing bar mill group and after unit, to reduce finishing mill finishing temperature, create conditions for realizing thermal mechanical rolling, improve the structure property of finished product rolled piece, the object of reach crystal grain thinning, saving alloying element, improving the quality of products.
The present invention solves its technical problem and adopts following technical scheme, and a kind of to the cooling method of rolled piece realization control between finishing bar mill group and after unit, finishing bar mill group is composed in series by multiple milling trains, adopts the method comprising the following steps:
(1) the first cooling water tank group is set between the milling train of finishing bar mill group
The first cooling water tank group is set between mm finishing mill unit milling train, by water treatment pumping plant, turbid ring cooling water is supplied to the first cooling water tank group, the first cooling water tank group is carried out cooling in real time to the bar in finishing bar mill group;
(2) the second cooling water tank group is set after finishing bar mill group
In mm finishing mill unit end, the second cooling water tank group is set, by water treatment pumping plant, turbid ring cooling water is supplied to the second cooling water tank group, the second cooling water tank group is carried out cooling in real time to the material of finishing bar mill group machine-shaping;
(3) first cooling water tank groups work asynchronously with the second cooling water tank group
Water treatment pump is simultaneously to the first cooling water tank and the second cooling water tank Cooling Water.
Further, the first cooling water tank group and the multiple water tanks of the second cooling water tank group bag, interval or be arranged side by side between multiple water tanks.
Further, the first cooling water tank group and described the second cooling water tank group bottom are provided with cross traveling trolley and the mobile bypass passageways of cross traveling trolley.
Further, the supply channel of the first cooling water tank group and the second cooling water tank group is provided with Hand-operated butterfly valve and electric butterfly valve or Pneumatic butterfly valve.
The present invention compared with prior art, has following major advantage:
Can realize flexibly and effectively the control to rolled piece water-cooled effect in bar production, create conditions for realizing thermal mechanical rolling, further improve the intensity of screw-thread steel, can produce good economic benefit, the method is few owing to dropping in bar engineering design from now on, is easily used.Its principle is: adopt the fine-grained steel production Technology taking the cold production technology of inter critical austenite control rolling control as core, emphasize the temperature control in producing, utilize the phase conversion mechanism of ferrous materials in thermal deformation process to realize thinning microstructure, and by cooling control after rolling technological measure control grain growth and microstructure homogenization, obtain good product structure property, realize the target that in bar production, microalloy element is added in minimizing.
brief description of the drawings
Fig. 1 uses the present invention to realize cooling concrete utilization.
Detailed description of the invention
Between finishing bar mill group provided by the invention and unit after cooling water tank method to set up, specifically:
(1) the first cooling water tank group is set between the milling train of finishing bar mill group
Between finishing bar mill group milling train, leave certain distance, the first cooling water tank group is set, the first cooling water tank group comprises 2 ~ 4 water tanks (can be also more water tanks), between water tank, be provided with interval or the series connection of form side by side setting, water tank bottom is provided with cross traveling trolley and the mobile bypass passageways of cross traveling trolley, each water tank can be traversing in bypass passageways separately, also can multiple water tanks simultaneously traversing together in bypass passageways, can, according to different size controlled rolling device mobile water tank, also can facilitate the quick-replaceable of bypass roller-way; The supply channel of each water tank adopts manual adjustments butterfly valve and electronic (or pneumatic) butterfly valve automatically to be regulated by PC, by water treatment pumping plant, turbid ring cooling water is supplied to the first cooling water tank group;
(2) the second cooling water tank group is set after finishing bar mill group
In mm finishing mill unit end, the second cooling water tank group is set, as Fig. 1, exit series connection after mm finishing mill unit arranges the second cooling water tank group, turbid ring cooling water is supplied the second cooling water tank group to Bars Workshop mm finishing mill unit by water treatment pumping plant, the second cooling water tank group comprises 2 ~ 4 water tanks (can be also more water tanks), between water tank, be provided with interval or the series connection of form side by side setting, water tank bottom is provided with cross traveling trolley, and the mobile bypass passageways of cross traveling trolley, each water tank can be traversing in bypass passageways separately, also can multiple water tanks simultaneously traversing together in bypass passageways, can be according to different size controlled rolling device mobile water tank, also can facilitate the quick-replaceable of bypass roller-way, the supply channel of each water tank adopts manual adjustments butterfly valve and electronic (or pneumatic) butterfly valve automatically to be regulated by PC, by water treatment pumping plant, turbid ring cooling water is supplied to the second cooling water tank group,
(3) first cooling water tank groups work asynchronously with the second cooling water tank group
Water treatment pump is simultaneously to the first cooling water tank group and the second cooling water tank group Cooling Water, and each water tank is grown 4 ~ 6m, 100 ~ 150 DEG C of maximum one.
Taking certain Bar Plant as example, the invention will be further described below, but do not limit the present invention.
As Fig. 1, will between second from the bottom, three rolling mills of six mm finishing mill unit 1, stay 25m distance, and the first cooling water tank group 2, the first cooling water tank groups 2 are set comprise two water tanks (containing nozzle, turbulent pipe, valve), interval 5m between two water tanks; Simultaneously exporting 2m place in mm finishing mill unit 1 arranges the second cooling water tank group 3, the second cooling water tank groups 3 and comprises that four water tanks, parallel series are arranged together.The supply channel of each water tank adopts manual adjustments butterfly valve and electronic (or pneumatic) butterfly valve automatically to be regulated by PC.By water treatment pumping plant, bar cooling water is supplied to above-mentioned water cooling water tank, water quality is turbid ring water, and pressure is 1.8 ~ 2.0MPa approximately, and supply water temperature is below 35 degree.
Claims (4)
1. the rolled piece between finishing bar mill group and after unit is realized and controlled a cooling method, finishing bar mill group is composed in series by multiple milling trains, it is characterized in that: adopt the method comprising the following steps:
(1) the first cooling water tank is set between the milling train of finishing bar mill group
The first cooling water tank group is set between mm finishing mill unit milling train, by water treatment pumping plant, turbid ring cooling water is supplied to the first cooling water tank, the first cooling water tank group is carried out cooling in real time to the bar in finishing bar mill group;
(2) the second cooling water tank is set after finishing bar mill group
In mm finishing mill unit end, the second cooling water tank group is set, by water treatment pumping plant by turbid ring cooling water for to the second cooling water tank group, the bar of the second cooling water tank group after to the machine-shaping of finishing bar mill group carries out cooling in real time;
(3) first cooling water tanks work asynchronously with the second cooling water tank
Water treatment pump is simultaneously to the first cooling water tank group and the second cooling water tank group Cooling Water.
2. according to claim 1 a kind of to the cooling method of rolled piece realization control between finishing bar mill group and after unit, it is characterized in that: described the first cooling water tank group and the multiple water tanks of described the second cooling water tank group bag, interval or be arranged side by side between multiple water tanks.
3. according to claim 1 a kind of to the cooling method of rolled piece realization control between finishing bar mill group and after unit, it is characterized in that: described the first cooling water tank group and described the second cooling water tank group lower curtate are provided with cross traveling trolley and the mobile bypass passageways of cross traveling trolley.
4. according to claim 1 a kind of to the cooling method of rolled piece realization control between finishing bar mill group and after unit, it is characterized in that: the supply channel of described the first cooling water tank group and described the second cooling water tank group is provided with Hand-operated butterfly valve and electric butterfly valve or Pneumatic butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215269.1A CN104001742A (en) | 2014-05-21 | 2014-05-21 | Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410215269.1A CN104001742A (en) | 2014-05-21 | 2014-05-21 | Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units |
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| CN104001742A true CN104001742A (en) | 2014-08-27 |
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| CN201410215269.1A Pending CN104001742A (en) | 2014-05-21 | 2014-05-21 | Method for achieving controlled cooling on rolled pieces between and after bar finishing mill units |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384207A (en) * | 2014-10-22 | 2015-03-04 | 南京钢铁股份有限公司 | Cooling control method for hot rolling bearing steel bar and process arrangement of hot rolling bearing steel bar |
| CN105057356A (en) * | 2015-08-05 | 2015-11-18 | 中冶华天工程技术有限公司 | Process for producing screw-thread steel through two-stage rolling control and after-rolling cooling control |
| 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 |
| CN108136464A (en) * | 2015-05-29 | 2018-06-08 | 奥钢联钢铁有限责任公司 | Treat the uniform contactless temperature control method and its device on the non-endless surface of temperature control |
| CN108941222A (en) * | 2018-09-28 | 2018-12-07 | 南京先河工程技术有限公司 | A kind of closed cooling water tank device of modularized design and quick change method |
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| CN101518781A (en) * | 2009-03-31 | 2009-09-02 | 中国钢研科技集团公司 | Millarray for producing ultra-fine crystal bar and milling method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104384207A (en) * | 2014-10-22 | 2015-03-04 | 南京钢铁股份有限公司 | Cooling control method for hot rolling bearing steel bar and process arrangement of hot rolling bearing steel bar |
| CN108136464A (en) * | 2015-05-29 | 2018-06-08 | 奥钢联钢铁有限责任公司 | Treat the uniform contactless temperature control method and its device on the non-endless surface of temperature control |
| CN105057356A (en) * | 2015-08-05 | 2015-11-18 | 中冶华天工程技术有限公司 | Process for producing screw-thread steel through two-stage rolling control and after-rolling cooling control |
| 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 |
| CN108941222A (en) * | 2018-09-28 | 2018-12-07 | 南京先河工程技术有限公司 | A kind of closed cooling water tank device of modularized design and quick change method |
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Application publication date: 20140827 |