CN107952795A - A kind of hot strip rolling manufacture craft - Google Patents
A kind of hot strip rolling manufacture craft Download PDFInfo
- Publication number
- CN107952795A CN107952795A CN201711215437.7A CN201711215437A CN107952795A CN 107952795 A CN107952795 A CN 107952795A CN 201711215437 A CN201711215437 A CN 201711215437A CN 107952795 A CN107952795 A CN 107952795A
- Authority
- CN
- China
- Prior art keywords
- strip
- blank
- manufacture craft
- rolling
- hot strip
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- 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
- B21B37/72—Rear end control; Front end control
-
- 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
- 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
- B21B45/04—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 de-scaling, e.g. by brushing
- B21B45/08—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 de-scaling, e.g. by brushing hydraulically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/225—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2201/00—Special rolling modes
- B21B2201/06—Thermomechanical rolling
Abstract
The invention discloses a kind of hot strip rolling manufacture craft, including step：Step 1, four sides made along its length are in the strand of arc-shaped, and make blank；Step 2, heats blank using heating furnace；Step 3, finish rolling is carried out using roll mill to blank, and blank is cooled down, and obtains strip.From above-mentioned technical process, because four sides of strand for making strip are in arc-shaped, therefore four sides of the strip produced along its length are arc-shaped, that is, remove four seamed edges in strip length direction, to reduce the gap of edge and middle part；Therefore, it is possible to reduce the temperature difference of band steel edge part and center section, the ratio of sticking up skin to reduce strip to occur.Therefore, hot strip rolling manufacture craft proposed by the present invention, can improve strip upwarping defect, improve the quality of strip, the problem for solving the field at this stage.
Description
Technical field
Prevent sticking up skin field the present invention relates to strip, more specifically to a kind of hot strip rolling manufacture craft.
Background technology
Strip sticks up skin and refers to appear in skin shape defect in the range of ultra-low-carbon steel edge 10-20mm, is primarily due to strip
Edge it is different from the cooling velocity in centre, there are the temperature difference.
For the prior art, for the strip of hot rolling manufacture craft easily there are the different upwarping defect of degree, this sticks up skin feature
Usually along the length direction proper alignment of strip, edge of the skin opening towards strip is stuck up；Slight upwarping defect is distributed in interrupted,
It is in continuously distributed when serious, directly affects the quality of strip.
Therefore, how to improve strip upwarping defect, improve the quality of strip, be the difficulty that the field is urgently to be resolved hurrily at this stage
Topic.
The content of the invention
In view of this, it is an object of the invention to provide a kind of hot strip rolling manufacture craft, the technique can improve strip
Upwarping defect, improves the quality of strip, solves the problem in the field at this stage.
A kind of hot strip rolling manufacture craft, including step：
Step 1, makes the strand for being used for casting strip, four sides of the strand along its length are in arc-shaped, and are made
Four sides obtained along its length are in the blank of arc-shaped；
Step 2, heats the blank using heating furnace；
Step 3, finish rolling is carried out using roll mill to the blank, and the blank is cooled down, and obtains strip.
Preferably, the hot strip rolling manufacture craft, heats the temperature of the blank more than 1250 DEG C.
Preferably, the hot strip rolling manufacture craft, the finish-rolling process of the step 3 include：
Strip de-scaling, using de-scaling water and back-flushing at the same time the strip to movement, in same position carry out de-scaling flushing, and
De-scaling water and back-flushing are to injection.
Preferably, the hot strip rolling manufacture craft, the back-flushing and the opposite direction angle model of the strip direction of motion
Enclose for 35 ° -55 °.
Preferably, the hot strip rolling manufacture craft, the inlet temperature that roll mill carries out the blank finish rolling exist
More than 1090 DEG C.
Preferably, the hot strip rolling manufacture craft, the finishing mill heat supply rolling for being cooled down to the blank are cold
But the range of flow of water is 18.6ml/min-20.6ml/min.
Preferably, the hot strip rolling manufacture craft, the system applied to Ultra-low carbon strip of the carbon content less than 0.07%
Make.
Hot strip rolling manufacture craft proposed by the present invention, including step：Step 1, four sides made along its length are in
The strand of arc-shaped, and make blank；Step 2, heats blank using heating furnace；Step 3, using roll mill to base
Material carries out finish rolling, and blank is cooled down, and obtains strip.From above-mentioned technical process, because making the strand four of strip
Side is in arc-shaped, therefore four sides of the strip produced along its length are arc-shaped, that is, remove strip length direction
Four seamed edges, to reduce the gap of edge and middle part；Therefore, it is possible to reduce the temperature of band steel edge part and center section
Difference, the ratio for sticking up skin to reduce strip to occur.Therefore, hot strip rolling manufacture craft proposed by the present invention, can improve strip and stick up
Skin defect, improves the quality of strip, solves the problem in the field at this stage.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow chart of hot strip rolling manufacture craft in the specific embodiment of the invention.
Embodiment
The core of present embodiment is to provide a kind of hot strip rolling manufacture craft, which can improve strip and stick up
Skin defect, improves the quality of strip, solves the problem in the field at this stage.
Hereinafter, embodiment is illustrated referring to the drawings.In addition, embodiments illustrated below is not to described in claim
The content of the invention rise any restriction effect.In addition, the full content of the composition represented by example below is not limited to as right
It is required that necessary to the solution of described invention.
The hot strip rolling manufacture craft that present embodiment provides, mainly including step：
Step 1, makes the strand for being used for casting strip, and four sides of strand along its length are arranged to arc-shaped,
Chamfered is done, and makes the blank that four sides obtained along its length are in arc-shaped；
Step 2, heats blank using heating furnace；
Step 3, finish rolling is carried out using roll mill to blank, and blank is cooled down using cooling water, obtains strip.
Above-mentioned hot strip rolling manufacture craft, because four sides of strand for making strip are in arc-shaped, therefore the strip produced
Four sides along its length are arc-shaped, that is, remove four seamed edges in strip length direction, to reduce edge and pars intermedia
The gap of position；Therefore, it is possible to reduce the temperature difference of band steel edge part and center section, the ratio of sticking up skin to reduce strip to occur.
Therefore, hot strip rolling manufacture craft proposed by the present invention, can improve strip upwarping defect, improve the quality of strip, solve
The problem in the field at this stage.It please specifically refer to Fig. 1.
The hot strip rolling manufacture craft that present embodiment provides, is existed using the temperature control for heating stove heat blank
More than 1250 DEG C, understand that the temperature can reduce the ratio that strip sticks up skin through experiment；Roll mill carries out finish rolling to the blank
Inlet temperature is more than 1090 DEG C, similarly, understands that the temperature can reduce the ratio that strip sticks up skin through experiment.
The hot strip rolling manufacture craft that present embodiment provides, the finish-rolling process of step 3 include strip de-scaling, profit
De-scaling flushing is carried out to the strip of movement, in same position at the same time with de-scaling water and back-flushing, i.e., just de-scaling is grasped in the prior art
For work, back-flushing device is added, and de-scaling water and back-flushing are to injection；During practical operation, de-scaling water and back-flushing
The same position of strip is carried out to flushing, it is a line to make to wash away position, and avoiding traditional unidirectional bath stops water at the same time
Stay on strip, reduce de-scaling water and back-flushing rests on time on strip, reduce the time of edge cooling, reduce
Edge and the temperature difference of middle part, further improve the phenomenon that strip sticks up skin.Preferably, back-flushing and the strip direction of motion
Opposite direction angular range can be 35 ° -55 °, such as 45 °；The pressure of back-flushing more than 20MPa, as benefit, can such as elect as
22MPa。
The hot strip rolling manufacture craft that present embodiment provides, for the finishing mill heat supply rolling cooled down to blank
The range of flow of cooling water can be 18.6ml/min-20.6ml/min, such as 19.6ml/min；The selection of the parameter can drop
The temperature drop of low steel edge portion, so as to improve the phenomenon that strip sticks up skin.Realized by the model for improving cooling water nozzle, i.e., by tradition
The nozzles of 665.043 models be changed to the nozzles of 664.883 models, the flow of cooling water is dropped by the 48.99ml/min before retrofiting
The low 19.6ml/min for after remodeling, and then the temperature drop of steel edge portion is reduced, to reduce the temperature difference of steel edge portion and middle part.
The hot strip rolling manufacture craft that present embodiment provides, can be applied to the making of Ultra-low carbon strip, such as
The making of Ultra-low carbon strip of the carbon content less than 0.07%.
Further, present embodiment provide hot strip rolling manufacture craft, by the edge of strand be fabricated to arc-shaped,
The step of making strand chamfering is as follows：
First, casting billet surface is cleared up：Make ignition location from starting point 100mm -150mm；The end of hot spot lighted torch
Portion, i.e., touch the igniting reinforcing bar on flame cleaning gun toward burner, flame is preheated end, and by muzzle and strand into 35 °-
40 ° of angles；To fire rod is pushed forward, muzzle is overturn when fire rod melts and strand has been lighted a fire, and pressed from both sides into 25 ° -30 ° with strand
Angle, to clear up strand, avoids producing cleaning burr.
Secondly, the clear rifle chamfering cleaning of hand：One rifle of logical cleaning first is drawn into inner arc corner, will be cleared up deep-controlled in 3-5mm；Angle
Portion carries out drawing one rifle of logical cleaning, it is desirable to which corner is mellow and full；In strand upper surface, side corner is carried out to draw one rifle of logical cleaning, will be clear
Manage deep-controlled in 3-5mm, walking rifle will uniformly exert oneself, and avoid occurring in scale removal process uneven；Will casting after cleaning
Oxidizing slag on base surface is removed clean, it is desirable to burr thickness.
Finally, the clear rifle of hand strips off the skin cleaning：One rifle of logical cleaning first is drawn into inner arc corner；Second rifle is pushed down the first rifle 1/2 and is cleared up
Trace draws one rifle of logical cleaning, it is desirable to clears up route and does not tilt straight；3rd rifle pushes down the second rifle 1/2 cleaning trace and draws logical cleaning one
Rifle；And so on cleared up to inner arc last rifle, and remove corner burr；Corner carries out drawing one rifle of logical cleaning, it is desirable to corner
It is mellow and full；Side corner is carried out in strand upper surface to draw one rifle of logical cleaning；Another side corner is carried out to draw one rifle of logical cleaning；
The oxidizing slag on casting billet surface is removed totally after cleaning, it is desirable to burr thickness≤10mm, width≤5mm；More than
It is required to clear up deep-controlled in 3-5mm, walks rifle and uniformly exert oneself, do not leak rifle, it is uneven to avoid occurring in scale removal process
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (7)
1. a kind of hot strip rolling manufacture craft, it is characterised in that including step：
Step 1, makes the strand for being used for casting strip, four sides of the strand along its length are in arc-shaped, and are made to
It is in the blank of arc-shaped to four sides along its length；
Step 2, heats the blank using heating furnace；
Step 3, finish rolling is carried out using roll mill to the blank, and the blank is cooled down, and obtains strip.
2. hot strip rolling manufacture craft according to claim 1, it is characterised in that heat the temperature of the blank 1250
More than DEG C.
3. hot strip rolling manufacture craft according to claim 1, it is characterised in that the finish-rolling process bag of the step 3
Include：
Strip de-scaling, using de-scaling water and back-flushing at the same time the strip to movement, in same position carry out de-scaling flushing, and de-scaling
Water and back-flushing are to injection.
4. hot strip rolling manufacture craft according to claim 3, it is characterised in that the back-flushing and the strip direction of motion
Opposite direction angular range be 35 ° -55 °.
5. hot strip rolling manufacture craft according to claim 1, it is characterised in that roll mill carries out finish rolling to the blank
Inlet temperature more than 1090 DEG C.
6. hot strip rolling manufacture craft according to claim 1, it is characterised in that for what is cooled down to the blank
The range of flow of finishing mill heat supply rolling cooling water is 18.6ml/min-20.6ml/min.
7. hot strip rolling manufacture craft according to claim 1, it is characterised in that applied to carbon content less than 0.07%
The making of Ultra-low carbon strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215437.7A CN107952795A (en) | 2017-11-28 | 2017-11-28 | A kind of hot strip rolling manufacture craft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711215437.7A CN107952795A (en) | 2017-11-28 | 2017-11-28 | A kind of hot strip rolling manufacture craft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107952795A true CN107952795A (en) | 2018-04-24 |
Family
ID=61962581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711215437.7A Pending CN107952795A (en) | 2017-11-28 | 2017-11-28 | A kind of hot strip rolling manufacture craft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107952795A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201754A (en) * | 2018-09-01 | 2019-01-15 | 江苏宏宝优特管业制造有限公司 | A kind of outer wall of steel pipe lubricating utensil and lubricating method |
| CN109226260A (en) * | 2018-10-10 | 2019-01-18 | 鞍钢股份有限公司 | A method of avoiding ultra-low-carbon steel edge veining defect |
| CN109365529A (en) * | 2018-10-08 | 2019-02-22 | 鞍钢股份有限公司 | A kind of production method of austenitic stainless steel cut deal |
| CN113578976A (en) * | 2021-07-28 | 2021-11-02 | 北京首钢股份有限公司 | Production method and production system of hot-rolled electrical steel capable of controlling edge warping |
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| CN201380275Y (en) * | 2009-03-17 | 2010-01-13 | 上海梅山钢铁股份有限公司 | Plate blank continuous casting crystallizer |
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| CN204262074U (en) * | 2014-11-25 | 2015-04-15 | 北京首钢国际工程技术有限公司 | A kind of finish rolling De-scaling box with recoil collector |
| JP2015214732A (en) * | 2014-05-12 | 2015-12-03 | Ｊｆｅスチール株式会社 | Production method of high-strength steel sheet |
| CN107338395A (en) * | 2017-07-13 | 2017-11-10 | 武汉钢铁有限公司 | 450MPa levels hot rolling low yield strength ratio paper-thin strip and its manufacture method |
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2017
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| CN201380275Y (en) * | 2009-03-17 | 2010-01-13 | 上海梅山钢铁股份有限公司 | Plate blank continuous casting crystallizer |
| CN102247985A (en) * | 2011-07-01 | 2011-11-23 | 河北省首钢迁安钢铁有限责任公司 | Method for producing steel for stirring tank with limit specification through hot rolling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109201754A (en) * | 2018-09-01 | 2019-01-15 | 江苏宏宝优特管业制造有限公司 | A kind of outer wall of steel pipe lubricating utensil and lubricating method |
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| CN109365529A (en) * | 2018-10-08 | 2019-02-22 | 鞍钢股份有限公司 | A kind of production method of austenitic stainless steel cut deal |
| CN109226260A (en) * | 2018-10-10 | 2019-01-18 | 鞍钢股份有限公司 | A method of avoiding ultra-low-carbon steel edge veining defect |
| CN113578976A (en) * | 2021-07-28 | 2021-11-02 | 北京首钢股份有限公司 | Production method and production system of hot-rolled electrical steel capable of controlling edge warping |
| CN113578976B (en) * | 2021-07-28 | 2023-09-01 | 北京首钢股份有限公司 | Production method and production system for hot-rolled electrical steel with edge skin tilting control function |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180424 |
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