CN107052060A - A kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect - Google Patents
A kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect Download PDFInfo
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- CN107052060A CN107052060A CN201710227575.0A CN201710227575A CN107052060A CN 107052060 A CN107052060 A CN 107052060A CN 201710227575 A CN201710227575 A CN 201710227575A CN 107052060 A CN107052060 A CN 107052060A
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- strip
- straightening
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- cleaning plate
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- 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
- 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
-
- 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
- B21B45/06—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 of strip material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The embodiment of the invention discloses a kind of method for eliminating acid-cleaning plate surface pinholes shape pit defect, including：Come out of the stove low temperature is carried out after heating of plate blank, be 1160 DEG C 1200 DEG C by tapping temperature control；Slab after heating is subjected to roughing, finish rolling, strip is obtained, wherein, in the finishing stands, it is 950 DEG C 1000 DEG C to control entry temperature at finishing, and it is 830 DEG C 870 DEG C to control finishing temperature；According to the thickness of the strip, straightening processing is carried out to the strip, wherein, during the straightening, set the straightening insertion of pulling-straightening equipment to be more than 20mm；Strip after straightening is subjected to pickling, acid-cleaning plate is obtained.The method that the present invention is provided solves the technical problem that Pinhole-shaped pit easily occurs in hot rolling acid-cleaning plate surface.Realize the technique effect for simply and effectively eliminating acid-cleaning plate surface pinholes shape pit.
Description
Technical field
The present invention relates to technical field of steel rolling, more particularly to a kind of side for eliminating acid-cleaning plate Pinhole-shaped pit defect of method
Method.
Background technology
Hot rolling acid-cleaning plate be using high-quality hot rolled strip as raw material, after going removing oxide layer, trimming through pickling lines, surface matter
The intermediate products of amount and use requirement between hot rolled plate and cold-reduced sheet, are the preferable substitute products of part cold-reduced sheet.Hot rolling
Acid-washed product is just used in automobile manufacture industry more and more with unique advantages such as its surface quality, saving process energy consumptions,
Mainstay material as high-grade chassis, wheel, safety member etc..
Hot rolling acid-cleaning plate Surface Quality requires high, finds that Pinhole-shaped pit occurs in surface after pickling in actual production,
The shape is like pin hole, and pit bottom is smooth, without any residue, is divided into random Pinhole-shaped pit and regular Pinhole-shaped fiber crops
Point, drawbacks described above is notable on influences such as the PROCESS FOR TREATMENTs such as follow-up plating, electrophoresis, passivation, color coating, has a strong impact on the surface matter of product
Amount, some serious pits are potential formation of crack, easily cracking defect are further development of after large deformation punching press, to steel
Producer and user all cause heavy losses.
It follows that the control of acid-cleaning plate surface pinholes shape pit is the important research problem of technical field of steel rolling, it is existing
Easily there is the technical problem of Pinhole-shaped pit in hot rolling acid-cleaning plate surface in technology.
The content of the invention
The embodiment of the present invention provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, to solve in the prior art
Easily there is the technical problem of Pinhole-shaped pit in hot rolling acid-cleaning plate surface.
The embodiment of the present application provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, and methods described includes：
Come out of the stove low temperature is carried out after heating of plate blank, be 1160 DEG C -1200 DEG C by tapping temperature control；
Slab after heating is subjected to roughing, finish rolling, strip is obtained, wherein, in the finishing stands, control finish rolling enters
Mouth temperature is 950 DEG C -1000 DEG C, and it is 830 DEG C -870 DEG C to control finishing temperature；
According to the thickness of the strip, straightening processing is carried out to the strip, wherein, during the straightening, set
The straightening insertion of pulling-straightening equipment is more than 20mm；
Strip after straightening is subjected to pickling, acid-cleaning plate is obtained.
Optionally, the pulling-straightening equipment includes smoothing roll under roller under roller, the second broken phosphorus under the first broken phosphorus and broken phosphorus；Its
In, there is roller roller under the first insertion, the described second broken phosphorus to have the second insertion, the broken phosphorus under the described first broken phosphorus
Lower smoothing roll has the 3rd insertion.
Optionally, the thickness according to the strip, straightening processing is carried out to the strip, including：
When the thickness of the acid-cleaning plate is 3mm-4mm, first insertion is controlled to be inserted for 20-22mm, described second
It is that 21-23mm, the 3rd insertion are 30-32mm to enter amount.
Optionally, the thickness according to the strip, straightening processing is carried out to the strip, including：
When the thickness of the strip is 4mm-5mm, it is 22-25mm, second insertion to control first insertion
Amount is that 23-26mm, the 3rd insertion are 32-34mm.
Optionally, the thickness according to the strip, straightening processing is carried out to the strip, including：
When the thickness of the acid-cleaning plate is 5mm-6mm, first insertion is controlled to be inserted for 25-28mm, described second
It is that 26-29mm, the 3rd insertion are 34-35mm to enter amount.
Optionally, in addition to：Slab after by heating is carried out after roughing, finish rolling, acquisition strip, in addition to：
The strip is batched, oiler temperature control is 580 DEG C -620 DEG C.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
The embodiment of the present application provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, by the finishing stands
In, it is 950 DEG C -1000 DEG C to control entry temperature at finishing, and it is 830 DEG C -870 DEG C to control finishing temperature, by reducing hot rolling producing line
Temperature so as to reducing the thickness of steel slab surface iron scale, so as to reduce the electrochemical corrosion in acid cleaning process, further,
According to the thickness of the strip, straightening processing is carried out to the strip, during the straightening, the drawing of pulling-straightening equipment is set
Rectify insertion and be more than 20mm；It can make cracking in iron scale, and weaken the effect of the electrochemical corrosion in acid cleaning process,
So as to reduce the generation of Pinhole-shaped pit, can under conditions of it need not change steel grades, by reduce producing line temperature and
Straightening processing is carried out to strip according to belt steel thickness, and rationally sets the method for straightening insertion to realize simply and effectively eliminating acid
The technique effect of board-washing surface pinholes shape pit, solves hot rolling acid-cleaning plate surface in the prior art and Pinhole-shaped pit easily occurs
Technical problem.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only embodiments of the invention, for ability
For the those of ordinary skill of domain, on the premise of not paying creative work, it can also obtain other according to the accompanying drawing of offer
Accompanying drawing.
The flow chart of the method for Fig. 1 acid-cleaning plate surface pinholes shape pits provided in an embodiment of the present invention；
Fig. 2 is random Pinhole-shaped pit defect shape appearance figure；
Fig. 3 is regular Pinhole-shaped pit defect shape appearance figure；
Fig. 4 is conventional hot rolling technology acid-cleaning plate surface pinholes shape pit shape appearance figure
Hot rolling technology acid-cleaning plate surface pinholes shape pit shape appearance figure during Fig. 5 is implemented for the present invention；；
Fig. 6 is flattening process acid-cleaning plate surface pinholes shape pit shape appearance figure in the prior art；
Fig. 7 is that invention implements a kind of acid-cleaning plate surface pinholes shape pit shape appearance figure of preferred embodiment；
Fig. 8 is existing straightening technique acid-cleaning plate surface pinholes shape pit shape appearance figure；
Fig. 9 is acid-cleaning plate surface pinholes shape pit shape appearance figure in another preferred embodiment of the invention.
Embodiment
The embodiment of the present invention provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, solves hot in the prior art
Roll the technical problem that Pinhole-shaped pit easily occurs in pickling plate surface.Realize simply and effectively elimination acid-cleaning plate surface pinholes shape
The technique effect of pit.
In order to solve the technical problem that above-mentioned prior art is present, the overall think of for the technical scheme that the embodiment of the present application is provided
Road is as follows：
Come out of the stove low temperature is carried out after heating of plate blank, be 1160 DEG C -1200 DEG C by tapping temperature control；
Slab after heating is subjected to roughing, finish rolling, strip is obtained, wherein, in the finishing stands, control finish rolling enters
Mouth temperature is 950 DEG C -1000 DEG C, and it is 830 DEG C -870 DEG C to control finishing temperature；
According to the thickness of the strip, straightening processing is carried out to the strip, wherein, during the straightening, set
The straightening insertion of pulling-straightening equipment is more than 20mm；
Strip after straightening is subjected to pickling, acid-cleaning plate is obtained.
By the above as can be seen that by the finishing stands, control entry temperature at finishing for 950 DEG C-
1000 DEG C, it is 830 DEG C -870 DEG C to control finishing temperature, and according to the thickness of the strip, straightening processing is carried out to the strip, is led to
Cross during the straightening, set the straightening insertion of pulling-straightening equipment to be more than 20mm；It can need not change steel grades
Under the conditions of, by reducing producing line temperature and straightening processing being carried out to strip according to belt steel thickness, and straightening insertion is rationally set
Method realize simply and effectively eliminate acid-cleaning plate surface pinholes shape pit technique effect, solve hot rolling in the prior art acid
Easily there is the technical problem of Pinhole-shaped pit in board-washing surface.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
State technical scheme to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the present invention
The detailed description of technical scheme, rather than the restriction to technical solution of the present invention, in the case where not conflicting, the present invention is implemented
Technical characteristic in example and embodiment can be mutually combined.
In the present embodiment there is provided a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, Fig. 1 is refer to, Fig. 1 is
A kind of flow chart for the method for eliminating acid-cleaning plate Pinhole-shaped pit defect of Pinhole-shaped pit method, the side in the embodiment of the present invention
Method includes：
Step S101：Come out of the stove low temperature is carried out after heating of plate blank, be 1160 DEG C -1200 DEG C by tapping temperature control；
Step S102：Slab after heating is subjected to roughing, finish rolling, strip is obtained, wherein, in the finishing stands,
It is 950 DEG C -1000 DEG C to control entry temperature at finishing, and it is 830 DEG C -870 DEG C to control finishing temperature；
Step S103：According to the thickness of the strip, straightening processing is carried out to the strip, wherein, in the straightening
Cheng Zhong, sets the straightening insertion of pulling-straightening equipment to be more than 20mm；
Step S104：Strip after straightening is subjected to pickling, acid-cleaning plate is obtained.
Specifically, in the prior art, as shown in accompanying drawing 2 and accompanying drawing 3, random pit distribution is like loose sand, in fact it could happen that
Any position, approximate circle or oval pattern, size is 100 μm -1000 μm, about 20-100 μm of depth.Regular pit has
Regular pit prints along cross break and is distributed, and occurs within plate wide width portion 0-200mm, and single pin hole pit is generally ellipse, multiple
Pit easily connects into strip, approximately parallel with plate width direction.Present invention applicant passes through long-term practice discovery, acid-cleaning plate table
The mechanism that face pit is produced causes electrochemical corrosion to cause for the electrical potential difference that iron sheet peels off position matrix and its surrounding oxidic iron sheet
Pinhole-shaped pit.Room temperature is cooled to after hot rolling is offline, when carrying out straightening or smooth process, surface in hot rolling uncoiling process
Iron scale is different with the elongation percentage of matrix, causes surface location iron scale random or print along cross break to peel off, pickling
Certain thickness iron sheet constitutes to form galvanic cell under the conditions of acid solution with matrix in journey, as iron scale and matrix constantly disappear
Consumption, matrix surface formation Pinhole-shaped pit.And in the production method of existing acid-cleaning plate, general finishing temperature 900 DEG C with
On, the present invention in the finishing stands, control entry temperature at finishing be 950 DEG C -1000 DEG C, control finishing temperature be 830 DEG C -
870 DEG C, by reducing the temperature of hot rolling producing line so as to reduce the thickness of steel slab surface iron scale, so as to reduce in acid cleaning process
Electrochemical corrosion, experimental result is respectively pickling plate surface in hot rolling technology in the prior art referring specifically to Fig. 4 and Fig. 5
Pattern and the pattern using pickling plate surface in the inventive method, pickling plate surface in method in the prior art is drawn by measurement
Pinhole-shaped pit density is respectively 120/cm with acid-cleaning plate surface pinholes shape pit density in the present invention2, 10/cm2, can be with
Find out, in method disclosed in the embodiment of the present invention：By controlling finishing temperature to be 830 DEG C -870 DEG C, it is possible to reduce acid-cleaning plate table
The generation of the Pinhole-shaped pit in face.
In the production method of common acid-cleaning plate, it is latter in finish-rolling process as use in flattening process, the present invention, will be flat
Whole technique adjustment is straightening technique, and according to the thickness of the strip, carries out straightening processing to the strip, pass through the straightening
During, set the straightening insertion of pulling-straightening equipment to be more than 20mm；, can be by right and straightening step is before acid pickling step
Strip, which carries out curved rectify, makes its scale on surface slabbing open, crush, so that weaken effect of the iron scale in electrochemical corrosion,
And then the generation of Pinhole-shaped pit is reduced, can be under conditions of it need not change steel grades, according to belt steel thickness to strip
Straightening processing is carried out, and rationally sets the method for straightening insertion to realize simply and effectively eliminating acid-cleaning plate surface pinholes shape pit
Technique effect, solve hot rolling acid-cleaning plate surface in the prior art and the technical problem of Pinhole-shaped pit easily occur.
In the disclosed method for eliminating acid-cleaning plate surface pinholes shape pit defect of the embodiment of the present invention, straightening processing is to use
What pulling-straightening equipment was realized, the pulling-straightening equipment includes smoothing roll under roller under roller, the second broken phosphorus under the first broken phosphorus and broken phosphorus；Its
In, there is roller roller under the first insertion, the described second broken phosphorus to have the second insertion, the broken phosphorus under the described first broken phosphorus
Lower smoothing roll has the 3rd insertion.
Specifically, in the disclosed method for eliminating acid-cleaning plate surface pinholes shape pit defect of the embodiment of the present invention, described
According to the thickness of the strip, straightening processing is carried out to the strip, including：When the thickness of the acid-cleaning plate is 3mm-4mm, control
It is that 20-22mm, second insertion are that 21-23mm, the 3rd insertion are 30-32mm to make first insertion.
Specifically, in the disclosed method for eliminating acid-cleaning plate surface pinholes shape pit defect of the embodiment of the present invention, described
According to the thickness of the strip, straightening processing is carried out to the strip, including：When the thickness of the strip is 4mm-5mm, control
First insertion is that 22-25mm, second insertion are that 23-26mm, the 3rd insertion are 32-34mm.Below
So that thickness is 4.55mm strip as an example, respectively to the acid-cleaning plate of acid-cleaning plate and the inventive method production produced in the prior art
Surface topography measure, experimental result, referring specifically to Fig. 6 and Fig. 7, is respectively acid-cleaning plate in flattening process in the prior art
The pattern of the pickling plate surface of straightening technique in the pattern and the present invention on surface, it can be seen that in the method in the embodiment of the present invention
Substantially produced without Pinhole-shaped pit, in method disclosed in the embodiment of the present invention：According to the thickness of the strip, to the strip
Straightening processing is carried out, when the thickness of the acid-cleaning plate is 3mm-4mm, it is 20-22mm, described the control first insertion
Two insertions are that 21-23mm, the 3rd insertion are 30-32, can effectively eliminate the Pinhole-shaped pit of pickling plate surface.
Specifically, in the disclosed method for eliminating acid-cleaning plate surface pinholes shape pit defect of the embodiment of the present invention, described
According to the thickness of the strip, straightening processing is carried out to the strip, including：When the thickness of the acid-cleaning plate is 5mm-6mm, control
It is that 25-28mm, second insertion are that 26-29mm, the 3rd insertion are 34-35mm to make first insertion.Under
Face is so that thickness is 5mm strip as an example, respectively to the surface using conventional straightening technique and the acid-cleaning plate of the inventive method production
Pattern is measured, experimental result referring specifically to Fig. 8 and Fig. 9, in respectively existing straightening technique the pattern of pickling plate surface and
The pattern of the pickling plate surface of straightening technique in the present invention, it can be seen that Pinhole-shaped pit in the method in the embodiment of the present invention
Density is smaller, and according to the thickness of the strip, straightening processing is carried out to the strip, and insertion is bigger, Pinhole-shaped pit
It is fewer.
In order to further reduce the generation of Pinhole-shaped pit, a kind of acid-cleaning plate Pinhole-shaped pit that eliminates disclosed by the invention lacks
Also include in sunken method：Slab after by heating is carried out after roughing, finish rolling, acquisition strip, in addition to：By the strip
Batched, oiler temperature control is 580 DEG C -620 DEG C.
Although it should be noted that open in the prior art reduce pickling by changing the method for steel billet composition and content
The method of plate surface scale mark defect, and disclosed in the present application is Pinhole-shaped pit, Pinhole-shaped pit and scale mark are present
Difference substantially, first, producing cause are different, scale mark be usually in course of hot rolling iron scale press-in cause；Pin
Poroid pit is not scale mark, but formed in a kind of acid cleaning process, reason be iron sheet exfoliation matrix and its around
Iron scale, the electrochemical corrosion under the conditions of acid solution；And then also had any different on both patterns, become after scale mark pickling
Pockmark, hole bottom is coarse, there is residual oxidization iron sheet；Pinhole-shaped pit, hole back light is slided, in the absence of residual iron sheet.And prior art
In method need to change the composition and content of steel billet, it is necessary to by substantial amounts of experiment, realize complex, and the side of the application
Method need not change the composition of steel grade, can simply and effectively eliminate acid-cleaning plate surface pinholes shape pit defect.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
The embodiment of the present application provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, by the finishing stands
In, it is 950 DEG C -1000 DEG C to control entry temperature at finishing, and it is 830 DEG C -870 DEG C to control finishing temperature, by reducing hot rolling producing line
Temperature so as to reducing the thickness of steel slab surface iron scale, so as to reduce the electrochemical corrosion in acid cleaning process, further,
According to the thickness of the strip, straightening processing is carried out to the strip, during the straightening, the drawing of pulling-straightening equipment is set
Rectify insertion and be more than 20mm；It can make cracking in iron scale, and weaken the effect of the electrochemical corrosion in acid cleaning process,
So as to reduce the generation of Pinhole-shaped pit, can under conditions of it need not change steel grades, by reduce producing line temperature and
Straightening processing is carried out to strip according to belt steel thickness, and rationally sets the method for straightening insertion to realize simply and effectively eliminating acid
The technique effect of board-washing surface pinholes shape pit, solves hot rolling acid-cleaning plate surface in the prior art and Pinhole-shaped pit easily occurs
Technical problem.
The embodiment of the present application provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, passes through setting and belt steel thickness
Corresponding straightening insertion, can further eliminate acid-cleaning plate surface pinholes shape pit.
The embodiment of the present application provides a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, by after finish rolling, to institute
State strip to be batched, and be 580 DEG C -620 DEG C by oiler temperature control, by reducing coiling temperature, can further reduce
The thickness of acid-cleaning plate scale on surface.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (6)
1. a kind of method for eliminating acid-cleaning plate Pinhole-shaped pit defect, it is characterised in that including：
Come out of the stove low temperature is carried out after heating of plate blank, be 1160 DEG C -1200 DEG C by tapping temperature control；
Slab after heating is subjected to roughing, finish rolling, strip is obtained, wherein, in the finishing stands, control finish rolling entrance temperature
Spend for 950 DEG C -1000 DEG C, it is 830 DEG C -870 DEG C to control finishing temperature；
According to the thickness of the strip, straightening processing is carried out to the strip, wherein, during the straightening, straightening is set
The straightening insertion of equipment is more than 20mm；
Strip after straightening is subjected to pickling, acid-cleaning plate is obtained.
2. the method as described in claim 1, it is characterised in that the pulling-straightening equipment includes roller, second under the first broken phosphorus and broken
Smoothing roll under roller and broken phosphorus under phosphorus；Wherein, roller has the first insertion under the described first broken phosphorus, and described second breaks curved under phosphorus
There is roller smoothing roll under the second insertion, the broken phosphorus to have the 3rd insertion.
3. method as claimed in claim 2, it is characterised in that the thickness according to the strip, is carried out to the strip
Straightening is handled, including：
When the thickness of the acid-cleaning plate is 3mm-4mm, it is 20-22mm, second insertion to control first insertion
It is 30-32mm for 21-23mm, the 3rd insertion.
4. method as claimed in claim 2, it is characterised in that the thickness according to the strip, is carried out to the strip
Straightening is handled, including：
When the thickness of the strip is 4mm-5mm, it is that 22-25mm, second insertion are to control first insertion
23-26mm, the 3rd insertion are 32-34mm.
5. method as claimed in claim 2, it is characterised in that the thickness according to the strip, is carried out to the strip
Straightening is handled, including：
When the thickness of the acid-cleaning plate is 5mm-6mm, it is 25-28mm, second insertion to control first insertion
It is 34-35mm for 26-29mm, the 3rd insertion.
6. the method as described in claim any one of 1-5, it is characterised in that also include：Slab after by heating carries out thick
Roll, finish rolling, obtain strip after, in addition to：
The strip is batched, oiler temperature control is 580 DEG C -620 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710227575.0A CN107052060B (en) | 2017-04-07 | 2017-04-07 | A method of eliminating acid-cleaning plate Pinhole-shaped point defect |
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| CN201710227575.0A CN107052060B (en) | 2017-04-07 | 2017-04-07 | A method of eliminating acid-cleaning plate Pinhole-shaped point defect |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107626739A (en) * | 2017-10-16 | 2018-01-26 | 首钢集团有限公司 | A kind of process that hot-strip finishing is realized using pulling-straightening equipment |
| CN110369528A (en) * | 2019-07-09 | 2019-10-25 | 张家港扬子江冷轧板有限公司 | A method of improving DC01 strip pickling speed |
| CN111501052A (en) * | 2019-01-30 | 2020-08-07 | 宝山钢铁股份有限公司 | Pickling process method for high-temperature coil material and application |
| CN111659732A (en) * | 2020-06-08 | 2020-09-15 | 首钢集团有限公司 | Method for solving corrosion of high-manganese hot-formed steel after pickling |
| CN112893477A (en) * | 2019-11-19 | 2021-06-04 | 上海梅山钢铁股份有限公司 | Hot-rolled pickled plate reduction trimming amount control method |
| CN113145642A (en) * | 2021-04-01 | 2021-07-23 | 首钢京唐钢铁联合有限责任公司 | Pickling plate and preparation method thereof |
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| CN112893477B (en) * | 2019-11-19 | 2022-05-10 | 上海梅山钢铁股份有限公司 | Hot-rolled pickled plate reduction trimming amount control method |
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