CN105377458A - Process for producing cold-rolled low-carbon-steel strip - Google Patents
Process for producing cold-rolled low-carbon-steel strip Download PDFInfo
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- CN105377458A CN105377458A CN201380077756.XA CN201380077756A CN105377458A CN 105377458 A CN105377458 A CN 105377458A CN 201380077756 A CN201380077756 A CN 201380077756A CN 105377458 A CN105377458 A CN 105377458A
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- 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
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- 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
- B21B2001/228—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 skin pass rolling or temper rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/10—Roughness of roll surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/021—Rolls for sheets or strips
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- Engineering & Computer Science (AREA)
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- Metal Rolling (AREA)
Abstract
The purpose of the present invention is to produce a cold-rolled steel strip having no indentation flaws by adopting wet temper rolling, the cold-rolled steel strip being comparable in surface smoothness to the cold-rolled steel strip produced in the case of adopting dry temper rolling. A steel strip constituted of low-carbon steel is cold-rolled, and then subjected to wet temper rolling using bright rolls to thereby produce a cold-rolled low-carbon-steel strip that has a surface roughness Ra of 0.3 [mu]m or less. The cold rolling is performed in such a manner that at least one pass is performed using dull rolls having a surface roughness Ra of 1.0-1.8 [mu]m and thereafter the final pass is performed using smooth rolls having a surface roughness Ra of 0.1-0.3 [mu]m.
Description
Technical field
The present invention relates to the manufacture method of the good mild steel cold-rolled strip of a kind of surface smoothness.
Background technology
Usually, the mild steel cold-rolled strip that surface smoothness is good is by rolling being carried out temper rolling (Tone Quality by the cold rolling cold-rolled strip for regulation thickness of slab) manufacture.Temper rolling uses smooth roll (Block ラ イ ト ロ ー Le) as working roll, by being transferred to by the even surface of smooth roll in material to be rolled (cold-rolled strip), to be level and smooth state by the Surface Finishing of this rolling stock.
As temper rolling, extensively there are known to wet type temper rolling and these two kinds of modes of dry type temper rolling.Wet type temper rolling is while supply temper rolling oil (lubricating oil) while carry out the mode of temper rolling to material to be rolled and working roll both sides.By the cleaning action of this temper rolling oil, the grease class (rolling wet goods time cold rolling) on material to be rolled surface, iron powder and other foreign matters are washed away, its result is, prevents the press-in flaw occurred in material to be rolled.In addition, press-in flaw be due to foreign matter of nipping between working roll and material to be rolled, and this foreign matter be pressed in material to be rolled occur.But according to wet type temper rolling, owing to clipping temper rolling oil between working roll and material to be rolled, the even surface that therefore there is smooth roll declines to the transfer efficiency of material to be rolled, and the surface roughness of finished product steel belt becomes large problem.
On the other hand, dry type temper rolling does not supply temper rolling oil (lubricating oil) to the surface of material to be rolled and working roll, and make material to be rolled and working roll be the mode of carrying out temper rolling under almost dry state again.Therefore, in temper rolling, directly do not contact with material to be rolled due to working roll via oil film, therefore the even surface of smooth roll is transferred in material to be rolled efficiently.But according to dry type temper rolling, owing to not having the cleaning action of temper rolling oil, therefore foreign matter is easily attached on material to be rolled or working roll, easily there is press-in flaw.
The manufacture method of the mild steel cold-rolled strip disclosed in patent document 1 is after to the cold-rolled strip cleaning by degreasing process be made up of mild steel, uses smooth roll this cold-rolled strip to be carried out to the method for dry type temper rolling.According to the manufacture method of this mild steel cold-rolled strip, due to after the grease class that will be attached to by cleaning by degreasing process on material to be rolled (cold-rolled strip) surface and foreign matter are removed, dry type temper rolling is carried out to this material to be rolled, therefore, it is possible to carry out temper rolling to material to be rolled under the state that the attachment of foreign matter is less, the finished product steel belt that surface smoothness is good can be manufactured.
Prior art document
Patent document
Patent document 1: Japanese Patent Publication 2007-130679 publication
Summary of the invention
(1) technical problem that will solve
But, in the manufacture method of the mild steel cold-rolled strip disclosed in patent document 1, although the foreign matter be attached on cold-rolled strip surface can be removed to a certain degree by cleaning by degreasing process, be difficult to the foreign matter be attached to after cleaning by degreasing process in material to be rolled and the foreign matter be attached on the working roll of dry type skin rolling mill to be removed.Therefore, the surface that there is the finished product steel belt after dry type temper rolling there is often the situation of press-in flaw.For making non-cohesive foreign matter on the work roll surface of dry type skin rolling mill, even if carry out dry type skin rolling mill and cleaning work etc. around thereof up hill and dale, but be also difficult to prevent from adhering to foreign matter completely on the surface of working roll.
Replace dry type temper rolling according to wet type temper rolling, then can remove by the cleaning action of temper rolling oil the foreign matter be attached on material to be rolled or work roll surface completely, the generation being pressed into flaw can be prevented.But, as described above, by wet type temper rolling, the even surface that there is smooth roll declines to the transfer efficiency of material to be rolled, and the surface smoothness of finished product steel belt is difficult to the situation of satisfied certain requirement (such as surface roughness Ra is less than 0.3 μm).
The present invention completes in view of the above-mentioned problems, its object is to, a kind of manufacture method of mild steel cold-rolled strip is provided, its generation by adopting wet type temper rolling to prevent the press-in flaw on cold-rolled strip, and the cold-rolled strip having and adopt the cold-rolled strip that manufactures when dry type temper rolling with degree surface smoothness can be manufactured.
(2) technical scheme
The manufacture method of mild steel cold-rolled strip of the present invention, to use smooth roll to carry out premised on wet type temper rolling after by the cold rolling band steel that mild steel is formed, it is characterized in that, described cold rolling be that after at least 1 passage uses hair roller (ダ ル ロ ー Le) to implement, final passage uses smooth roll to implement.
According to the manufacture method of this mild steel cold-rolled strip, by adopting wet type temper rolling, the cleaning action of temper rolling oil is utilized the foreign substance cleaning be attached on working roll and material to be rolled surface to be removed, therefore, it is possible to prevent the generation at material to be rolled (cold-rolled strip) upper press-in flaw.In addition, in cold rolling before wet type temper rolling, when carrying out using hair side roll cold rolling, the surface of hair side roll plays a role as oil groove, makes not easily to form oil groove in material to be rolled.Further, by carrying out in final passage using the cold rolling of smooth roll, the surface smoothness of material to be rolled can be improved.By using the enough little roller of surface roughness as the smooth roll used in this final passage, even if smooth roll is to the transfer efficiency step-down of material to be rolled in wet type temper rolling, also can compensate the reducing amount of this transfer efficiency, make the surface roughness of the finished product steel belt after temper rolling fully level and smooth.
Preferably, the surface roughness Ra of the cold-rolled strip after carrying out described wet type temper rolling is less than 0.3 μm.
Preferably, the surface roughness Ra of described smooth roll is 0.1 μm ~ 0.3 μm.
Preferably, the surface roughness Ra of described hair side roll is 1.0 μm ~ 1.8 μm.
(3) beneficial effect
According to the manufacture method of mild steel cold-rolled strip of the present invention, the surface smoothness of finished product steel belt can not be made to decline, prevent the generation of the press-in flaw on finished product steel belt etc.
Accompanying drawing explanation
Fig. 1 is table and the block diagram of the measurement result of the surface roughness representing the finished product steel belt obtained by the manufacture method of the mild steel cold-rolled strip of the embodiment of the present invention.In figure, transverse axis represents the surface roughness of finished product steel belt, and in figure, the longitudinal axis represents N number (manufacture number).
Fig. 2 is table and the block diagram of the measurement result of the surface roughness representing the finished product steel belt obtained by the manufacture method of mild steel cold-rolled strip in the past.In figure, transverse axis represents the surface roughness of finished product steel belt, and in figure, the longitudinal axis represents N number (manufacture number).
Detailed description of the invention
Below, the manufacture method of the mild steel cold-rolled strip of embodiment of the present invention is described.The manufacture method of this mild steel cold-rolled strip is as described below: to be modulated to the slab of the mild steel of regulation steel component for raw material, to obtain steel band, carry out cold rolling to this steel band, carry out the method for wet type temper rolling afterwards through hot-rolled process, pickling process etc.In addition, by adopting wet type temper rolling, can in cold rolling rear omission for removing the cleaning by degreasing process of the cold rolling wet goods be attached in material to be rolled.In addition, because mild steel not easily occurs by the cold rolling work hardening caused, therefore, it is possible to omit the annealing in process operation of the material to be rolled before cold rolling rear wet type temper rolling.
The mild steel of the steel type of above-mentioned mild steel cold-rolled strip to be such as C content be below 0.12 quality %.As the typical example of this mild steel, can enumerate " SPCC (general cold-rolled carbon steel thin plate and the steel band) " recorded in " reference " hurdle of JISG3141 " cold rolling steel plate and steel band ".In this SPCC, C content is below 0.12 quality %, Mn content be below 0.50 quality %, P content be below 0.040 quality %, S content is 0.045 quality %, its remaining part by Fe and inevitably impurity form.
As carrying out above-mentioned cold rolling cold-rolling mill, such as, can use the reversing cold mill that rolling direction can be reversed.As the working roll of this cold-rolling mill, the 1st passage uses hair side roll.After 2nd passage, except the situation for final passage, also then use hair side roll.Smooth roll (ス ム ー ス ロ ー Le is used) in final passage.But above-mentioned hair side roll preferably uses surface roughness Ra to be the roll of 1.0 μm ~ 1.8 μm, in addition, above-mentioned smooth roll preferably uses surface roughness Ra to be the roll of 0.1 μm ~ 0.3 μm.Road number of times is not particularly limited, but such as when road number of times is " 5 ", uses hair side roll in 1st ~ 4 passages, only uses smooth roll in the 5th passage as final passage.In addition, surface roughness Ra is by the center line average roughness of JISB0601 defined.In addition, cold rolling reduction ratio suitably determines according to the purposes of steel band, but be preferably set to such as about 50% ~ 70%.
In above-mentioned wet type temper rolling, use smooth roll as the working roll of wet type skin rolling mill, supply temper rolling oil (lubricating oil) while be rolled to working roll and material to be rolled both sides.The percentage elongation (ε) of the steel band in wet type temper rolling needs the scope controlled 0.2 ~ 1.5%.0.3 ~ 0.7Ton/mm degree is approximately with the corresponding wide load of this percentage elongation (ε).Percentage elongation (ε) is limited in above-mentioned scope (0.2 ~ 1.5%).That the transferring effect of roller surface is weak, causes the deficiency of the flatness on finished product steel belt surface because in the temper rolling of the percentage elongation lower than this scope, on the other hand, in the temper rolling exceeding this scope, the ductility of finished product steel belt declines to a great extent, and is difficult to guarantee good press processability etc.Preferred percentage elongation (ε) is about 0.4% ~ 1.0%, most preferably is 0.6% ~ 0.8%.
In the past, the applicant of the application uses surface roughness Ra to be that the smooth roll of 0.4 μm ~ 0.6 μm carries out cold rolling as the working roll of cold-rolling mill in whole passage, then after to this cold-rolled strip cleaning by degreasing, carry out dry type temper rolling, produce the finished product steel belt (mild steel cold-rolled strip) meeting certain specification (such as surface roughness Ra is less than 0.3 μm).In this manufacture method, owing to often there is press-in flaw on finished product steel belt, so present inventor repeatedly can meet above-mentioned certain specification to finished product steel belt and can prevent the manufacture method of the mild steel cold-rolled strip of the generation being pressed into flaw from having carried out deep experimental study completely.
Its result is, present inventor is to occur as prerequisite by what adopt wet type temper rolling to prevent from being pressed into flaw completely as temper rolling, to the problem of the decline of the transfer efficiency of smooth roll, be conceived to solve the problems referred to above in the work roll surface roughness of cold rolling middle use.Namely obtain following understanding: by as described above in cold rolling 1st passage use hair side roll, after 2nd passage, except the situation for final passage, also then use hair side roll, in final passage, use smooth roll, the finished product steel belt after wet type temper rolling can be made to meet above-mentioned certain specification.
By changing the surface roughness of the working roll of cold-rolling mill like this, the reason that finished product steel belt can be made to meet above-mentioned certain specification is, can consider relevant with the formation of oil groove.When carrying out cold rolling, supply ROLLING OIL while carry out cooling and the lubrication of these material to be rolled and working roll to material to be rolled and working roll.When as in the past whole passage all use surface roughness Ra be the smooth roll of 0.4 μm ~ 0.6 μm carry out cold rolling, oil groove can be formed in material to be rolled, thus cause the material to be rolled after cold rolling defines a large amount of oil groove.
Cold rolling as present embodiment, when using hair side roll as working roll beyond final passage, in the process using hair side roll, because ROLLING OIL enters into the concavo-convex of hair side roller surface, this surface is played a role as oil groove, therefore becomes and be difficult to form oil groove in material to be rolled.And, be the smooth roll (surface roughness is very little compared with the smooth roll in the past used) of 0.1 μm ~ 0.3 μm by using surface roughness Ra in final passage, make cold rolling after the surface roughness of material to be rolled compared with the pastly become very little, even if smooth roll is to the transfer efficiency step-down of material to be rolled in wet type temper rolling, also can compensate the slippage of this transfer efficiency, thus fully guarantee the surface roughness of the finished product steel belt after temper rolling.That is, above-mentioned certain specification (surface roughness Ra is below 0.3 μm) can be met.
As mentioned above, according to the manufacture method of the mild steel cold-rolled strip of embodiment of the present invention, adopt wet-format as the temper rolling carried out after cold rolling, temper rolling oil is supplied to the working roll of skin rolling mill and material to be rolled both sides, by the cleaning action of this temper rolling oil, the foreign matter be attached on the surface of working roll and material to be rolled is washed off, therefore, it is possible to prevent the generation of the press-in flaw in material to be rolled.In addition, cold rolling by what be implemented as follows, namely the 1st passage use surface roughness Ra is the hair side roll of 1.0 μm ~ 1.8 μm, after 2nd passage, also identical hair side roll is then used except the situation for final passage, in final passage, use surface roughness Ra to be the smooth roll of 0.1 μm ~ 0.3 μm, even if thus adopt wet type temper rolling, also can manufacture the finished product steel belt of the surface roughness (such as surface roughness Ra be less than 0.3 μm) identical with level in the past.
Embodiment
Below, embodiments of the invention are described.In this embodiment, with mild steel slab for raw material, via hot rolling and hot rolled steel plate pickling processes (processing of rust removing) and obtain material to be rolled, carry out cold rolling to this material to be rolled.In cold rolling, 1st ~ 4 passages use surface roughness Ra be the hair side roll of 1.0 μm ~ 1.8 μm as working roll, as final passage the 5th passage use surface roughness Ra be that the smooth roll of 0.1 μm ~ 0.3 μm is as working roll.Cleaning by degreasing process is not carried out to the cold-rolled strip obtained thus, implement wet type temper rolling, thus be adjusted the finished product steel belt (mild steel cold-rolled strip) of surface roughness.This steel band is sheet material (the sclerosis classification: hard being equivalent to SPCC-1B (JISG3141); Surface Finishing is classified: polishing fine finishining).
In addition, as the manufacture method of mild steel cold-rolled strip in the past, with mild steel slab for raw material, via hot rolling and hot rolled steel plate pickling processes and obtain material to be rolled, being pressed material to use surface roughness Ra in 1st ~ 5 passages to this is that the smooth roll of 0.4 μm ~ 0.6 μm carries out cold rolling as working roll, after the cold-rolled strip cleaning by degreasing process obtained thus, implement dry type temper rolling, be also adjusted the finished product steel belt (mild steel cold-rolled strip) of surface roughness.This steel band is also sheet material (the sclerosis classification: hard being equivalent to SPCC-1B (JISG3141); Surface Finishing is classified: polishing fine finishining).
Shown in the component of the steel in the manufacture method of embodiments of the invention and manufacture method in the past, hot-rolled condition, following (1) ~ (3) of cold rolling condition.That is, the component of (1) steel is: C content is 0.02 ~ 0.06 quality %, Mn content be 0.4 ~ 0.48 quality %, P content be 0.02 quality %, S content is 0.01 quality %.(2) hot-rolled condition is: hot rolling Finishing temperatures is 875 ~ 935 DEG C, and coiling temperature is 535 ~ 635 DEG C.(3) cold rolling condition is: reduction ratio is 52.6%, and cold rolling thickness of slab is 1.61mm.
As temper rolling condition, use the smooth roll with even surface implementing wet lapping process (using the abrasive sand that granularity is #320) as working roll.In wet type temper rolling, " ND-10 changes " (preparation of KCC of Datong District) of working concentration 6% is as temper rolling oil.Arbitrary temper rolling all makes steel band percentage elongation be 0.6% ~ 0.7%.
Fig. 1 represents the measurement result of the surface roughness of the finished product steel belt obtained by the manufacture method of embodiments of the invention, and Fig. 2 represents the measurement result of the surface roughness of the finished product steel belt obtained by manufacture method in the past.As shown in Figure 1, by the finished product steel belt that the manufacture method of embodiments of the invention obtains, N number (manufacture number) is 21, the mean value of surface roughness Ra is 0.148 (0.154), standard deviation is 0.011 (0.011), maximum is 0.169 (0.171), and minimum of a value is 0.125 (0.132).In addition, () value outward represents the surface (i.e. upper surface) of steel band, and the value in () represents the back side (i.e. lower surface) of steel band.The finished product steel belt obtained by this manufacture method does not find be pressed into flaw.
On the other hand, by the finished product steel belt that manufacture method in the past obtains, N number (manufacture number) is 304 (304), the mean value of surface roughness Ra is 0.151 (0.169), standard deviation is 0.035 (0.033), maximum is 0.284 (0.292), and minimum of a value is 0.078 (0.075).
If two kinds of manufacture methods compared, then because N number has relatively big difference, therefore the standard deviation of surface roughness Ra, maximum and greatest length also have relatively big difference, but the mean value of surface roughness Ra can be described as roughly equal.That is, manufacture method according to an embodiment of the invention, can manufacture the finished product with the surface roughness Ra identical with the cold-rolled strip degree manufactured by manufacture method in the past.
Industrial applicibility
The present invention such as can apply in the manufacture line being used for manufacturing the good mild steel cold-rolled strip of surface smoothness, and the mild steel cold-rolled strip produced suitably can be applied to mechanical part, electric/electronic parts, automobile component etc.
Claims (4)
1. a manufacture method for mild steel cold-rolled strip, using smooth roll to carry out wet type temper rolling after by the cold rolling band steel that mild steel is formed, is characterized in that,
Described cold rolling be that after at least 1 passage uses hair side roll to implement, final passage uses smooth roll to implement.
2. the manufacture method of mild steel cold-rolled strip according to claim 1, is characterized in that, the surface roughness Ra of carrying out the cold-rolled strip after described wet type temper rolling is less than 0.3 μm.
3. the manufacture method of mild steel cold-rolled strip according to claim 1, is characterized in that, the surface roughness Ra of described smooth roll is 0.1 μm ~ 0.3 μm.
4. the manufacture method of the mild steel cold-rolled strip according to claim 1 or 3, is characterized in that, the surface roughness Ra of described hair side roll is 1.0 μm ~ 1.8 μm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2013/071193 WO2015019409A1 (en) | 2013-08-06 | 2013-08-06 | Process for producing cold-rolled low-carbon-steel strip |
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| Publication Number | Publication Date |
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| CN105377458A true CN105377458A (en) | 2016-03-02 |
| CN105377458B CN105377458B (en) | 2017-03-08 |
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| CN201380077756.XA Active CN105377458B (en) | 2013-08-06 | 2013-08-06 | The manufacture method of mild steel cold-rolled strip |
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| CN (1) | CN105377458B (en) |
| WO (1) | WO2015019409A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111974802A (en) * | 2020-07-23 | 2020-11-24 | 柳州钢铁股份有限公司 | Cold continuous rolling ultra-low roughness high strength steel light panel and cover type annealing production method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04253504A (en) * | 1991-02-01 | 1992-09-09 | Sumitomo Metal Ind Ltd | Device and method for manufacturing cold rolled steel plate having clean surface |
| JPH05177209A (en) * | 1991-12-27 | 1993-07-20 | Nippon Steel Corp | Metal strip with strong surface luster and its manufacture |
| JPH08215705A (en) * | 1995-02-13 | 1996-08-27 | Sumitomo Metal Ind Ltd | Skin-pass rolling method |
| JPH1177123A (en) * | 1997-09-03 | 1999-03-23 | Nkk Corp | Method for controlling dull rolling in cold rolling mill |
| JP2007130679A (en) * | 2005-11-14 | 2007-05-31 | Nisshin Steel Co Ltd | Method for manufacturing cold-rolled steel strip of low carbon steel excellent in surface smoothness |
| CN101869910A (en) * | 2010-06-04 | 2010-10-27 | 山东泰山建能机械集团有限公司 | Method for machining special surface of cold rolled stainless steel band |
| CN102655954A (en) * | 2009-12-15 | 2012-09-05 | 三菱日立制铁机械株式会社 | Equipment for manufacturing cold-rolled material, and cold-rolling method |
| CN101563172B (en) * | 2006-12-18 | 2013-07-17 | 杰富意钢铁株式会社 | Method of temper rolling of steel strip and process for manufacturing high tensile cold rolled steel sheet |
-
2013
- 2013-08-06 WO PCT/JP2013/071193 patent/WO2015019409A1/en active Application Filing
- 2013-08-06 CN CN201380077756.XA patent/CN105377458B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04253504A (en) * | 1991-02-01 | 1992-09-09 | Sumitomo Metal Ind Ltd | Device and method for manufacturing cold rolled steel plate having clean surface |
| JPH05177209A (en) * | 1991-12-27 | 1993-07-20 | Nippon Steel Corp | Metal strip with strong surface luster and its manufacture |
| JPH08215705A (en) * | 1995-02-13 | 1996-08-27 | Sumitomo Metal Ind Ltd | Skin-pass rolling method |
| JPH1177123A (en) * | 1997-09-03 | 1999-03-23 | Nkk Corp | Method for controlling dull rolling in cold rolling mill |
| JP2007130679A (en) * | 2005-11-14 | 2007-05-31 | Nisshin Steel Co Ltd | Method for manufacturing cold-rolled steel strip of low carbon steel excellent in surface smoothness |
| CN101563172B (en) * | 2006-12-18 | 2013-07-17 | 杰富意钢铁株式会社 | Method of temper rolling of steel strip and process for manufacturing high tensile cold rolled steel sheet |
| CN102655954A (en) * | 2009-12-15 | 2012-09-05 | 三菱日立制铁机械株式会社 | Equipment for manufacturing cold-rolled material, and cold-rolling method |
| CN101869910A (en) * | 2010-06-04 | 2010-10-27 | 山东泰山建能机械集团有限公司 | Method for machining special surface of cold rolled stainless steel band |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111974802A (en) * | 2020-07-23 | 2020-11-24 | 柳州钢铁股份有限公司 | Cold continuous rolling ultra-low roughness high strength steel light panel and cover type annealing production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015019409A1 (en) | 2015-02-12 |
| CN105377458B (en) | 2017-03-08 |
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