CN117102254A - Online secondary cold rolling method and device for tinning plate - Google Patents

Online secondary cold rolling method and device for tinning plate Download PDF

Info

Publication number
CN117102254A
CN117102254A CN202311074290.XA CN202311074290A CN117102254A CN 117102254 A CN117102254 A CN 117102254A CN 202311074290 A CN202311074290 A CN 202311074290A CN 117102254 A CN117102254 A CN 117102254A
Authority
CN
China
Prior art keywords
rack
distance
double
strip steel
adjusting
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
Application number
CN202311074290.XA
Other languages
Chinese (zh)
Inventor
刘伟
王永强
莫志英
刘宗发
方圆
文杰
胡小明
张宝来
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shougang Group Co Ltd
Shougang Jingtang United Iron and Steel Co Ltd
Original Assignee
Shougang Group Co Ltd
Shougang Jingtang United Iron and Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shougang Group Co Ltd, Shougang Jingtang United Iron and Steel Co Ltd filed Critical Shougang Group Co Ltd
Priority to CN202311074290.XA priority Critical patent/CN117102254A/en
Publication of CN117102254A publication Critical patent/CN117102254A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of 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
    • B21B37/46—Roll speed or drive motor control
    • 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
    • B21B37/48—Tension control; Compression control
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B2038/004—Measuring scale thickness

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

The application relates to an online secondary cold rolling method and device for a tinning plate, wherein the method comprises the following steps: inputting the tinning plate into a double-rack leveling machine; obtaining the distance between the welding seam of the tin plate and the roll gap of the double-rack leveling machine; obtaining the thickness of the strip steel of the tinning plate; adjusting the speed of the inlet strip steel of the double-rack leveling machine according to the distance; adjusting the strip steel tension of the double-rack temper mill according to the distance and the strip steel thickness; and adjusting the rolling force of the double-rack leveling machine according to the distance. The online secondary cold rolling method and device for the tinplate can solve the problem of belt breakage during continuous rolling of the secondary cold rolled tinplate, can provide reasonable technological parameter setting methods and measures to realize online continuous rolling, improves rolling stability and shortens production period.

Description

Online secondary cold rolling method and device for tinning plate
Technical Field
The application relates to the field of secondary cold rolling, in particular to an online secondary cold rolling method and device for a tinning plate.
Background
The secondary cold rolling is to perform the first rolling after the cold continuous rolling, and then perform the second rolling after the annealing treatment, wherein the second rolling generally adopts a double-frame temper mill, the rolling reduction of a frame 1 is generally about 20% -40%, the rolling reduction of a frame 2 adopts a flattening mode, and the rolling reduction is between 0.5% -1.5%. The thickness of the secondary cold-rolled tinplate is generally in the range of 0.1-0.3 mm. At present, a mode of adding off-line secondary cold rolling after continuous annealing is generally adopted for producing the secondary cold-rolled tin plate. This can avoid the problem of strip breakage, but if on-line continuous secondary cold rolling can be achieved, the production efficiency can be improved and the strip production cycle can be shortened.
As shown in FIG. 1, the strip steel is relatively thin, the rolling reduction rate of a 1 frame is large in secondary cold rolling, and rolling strip breakage phenomenon often occurs before and after welding seams. How to avoid the problem of weld joint breakage in the online secondary cold rolling process is a key for realizing the online rolling of the tin plate through secondary cold rolling, and therefore, improvement is needed.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the application provides an online secondary cold rolling method and device for a tinned plate.
In a first aspect, the application provides an online secondary cold rolling method for a tinning plate, which comprises the following steps:
inputting the tinning plate into a double-rack leveling machine;
obtaining the distance between the welding seam of the tin plate and the roll gap of the double-rack leveling machine;
obtaining the thickness of the strip steel of the tinning plate;
adjusting the speed of the inlet strip steel of the double-rack leveling machine according to the distance;
adjusting the strip steel tension of the double-rack temper mill according to the distance and the strip steel thickness;
and adjusting the rolling force of the double-rack leveling machine according to the distance.
Preferably, said adjusting the inlet strip speed of the dual rack temper mill according to said distance comprises the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the speed of the inlet strip steel at a first speed;
if not, the speed of the inlet strip steel is reduced from the first speed to the second speed.
Preferably, the first speed ranges from: 500m/min-750m/min.
Preferably, the second speed is 60m/min.
Preferably, said adjusting the strip tension of said dual rack temper mill according to said distance and said strip thickness comprises the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the strip steel tension corresponding to the first rack inlet, the second rack inlet and the second rack outlet of the double-rack temper mill to be T1, T2 and T3 respectively;
if not, calculating a coefficient a according to the thickness of the strip steel, and respectively reducing the strip steel tension corresponding to the first rack inlet, the second rack inlet and the second rack outlet to aT1, aT2 and aT3.
Preferably, the expression between the coefficient a and the strip thickness h is:
preferably, said adjusting the rolling force of the double stand temper mill according to the distance comprises the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the rolling forces corresponding to the first stand and the second stand of the double-stand leveling machine to be F1 and F2 respectively;
if not, respectively reducing the rolling force corresponding to the first stand and the second stand to a first rolling force and a second rolling force.
Preferably, the first rolling force ranges from: 2000KN-3000KN.
Preferably, the second rolling force ranges from: 2000KN-3000KN.
In a second aspect, the present application provides an on-line secondary cold rolling device for tin plate, comprising:
the input module is used for inputting the tinning plate into the double-rack leveling machine;
the distance acquisition module is used for acquiring the distance between the welding seam of the tin plate and the roll gap of the double-rack leveling machine;
the thickness acquisition module is used for acquiring the strip steel thickness of the tinning plate;
the speed adjusting module is used for adjusting the speed of the inlet strip steel of the double-rack leveling machine according to the distance;
the tension adjusting module is used for adjusting the strip steel tension of the double-rack temper mill according to the distance and the strip steel thickness;
and the rolling force adjusting module is used for adjusting the rolling force of the double-rack leveling machine according to the distance.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
the online secondary cold rolling method and device for the tinplate can solve the problem of belt breakage during continuous rolling of the secondary cold rolled tinplate, can provide reasonable technological parameter setting methods and measures to realize online continuous rolling, improves rolling stability and shortens production period.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic diagram of a rolled strip break occurring before and after a weld in a prior art secondary cold rolling;
fig. 2 is a schematic flow chart of an online secondary cold rolling method for a tinning plate, which is provided by the embodiment of the application;
fig. 3 is a schematic structural diagram of an online secondary cold rolling device for tinning plates, which is provided by the embodiment of the application;
fig. 4 is a schematic diagram of a double-rack leveling machine in an online secondary cold rolling method of a tinning plate according to an embodiment of the present application;
fig. 5 is a schematic diagram of online rolling process parameters of 0.159mmDR material in an online secondary cold rolling method of a tinned plate according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Fig. 2 is a schematic flow chart of an online secondary cold rolling method for a tin plate, which is provided by the embodiment of the application.
The application provides an online secondary cold rolling method for a tinning plate, which comprises the following steps:
s1: inputting the tinning plate into a double-rack leveling machine;
specifically, the tin plate requiring secondary cold rolling is input into the double-rack leveling machine, and the tin plate can be input into the double-rack leveling machine through automatic input equipment (such as a manipulator, a conveyor belt and the like).
S2: obtaining the distance between the welding seam of the tin plate and the roll gap of the double-rack leveling machine;
specifically, the distance between the weld joint of the tinplate and the roll gap of the double-frame leveling machine is defined as L, and the distance L can be measured by a distance meter (infrared distance meter, etc.) and is fed to the double-frame leveling machine.
S3: obtaining the thickness of the strip steel of the tinning plate;
specifically, the thickness of the strip steel of the tinplate can be measured by a distance meter (an infrared distance meter and the like) and conveyed to the double-rack leveling machine, or can be measured in advance before the tinplate is input into the double-rack leveling machine, and the thickness parameter can be input into the double-rack leveling machine.
S4: adjusting the speed of the inlet strip steel of the double-rack leveling machine according to the distance;
in the embodiment of the application, the step of adjusting the inlet strip steel speed of the double-rack temper mill according to the distance comprises the following steps:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the speed of the inlet strip steel at a first speed;
if not, the speed of the inlet strip steel is reduced from the first speed to the second speed.
Fig. 4 is a schematic view of a dual-frame temper mill, and a specific step of adjusting the speed of the inlet strip steel of the dual-frame temper mill according to the distance between the weld of the tin plate and the roll gap of the dual-frame temper mill will be described with reference to fig. 4. Specifically, the 1# stand and the 2# stand are respectively provided with four rollers, the 1# stand bears the task of rolling reduction in a secondary cold rolling mode, the rolling reduction is 20% -40%, and the 2# stand bears the flattening task. The difficulty in realizing continuous rolling is how to ensure that the welding seam position can stably transition when passing through the No. 1 frame, and the problem of belt breakage does not occur.
As shown in fig. 4, in the online secondary cold rolling process, when the leveling machine wears the strip steel and continuously rolls, the inlet strip steel speed is V0, the outlet strip steel speed is V1, and the rolling force F1 of the 1# stand and the rolling force F2 of the 2# stand are obtained according to the rolling reduction calculation. Meanwhile, a certain tension is given to the inlet and the outlet of the machine frame to realize normal rolling of the strip steel, T1 is the inlet tension of the machine frame No. 1, T2 is the tension between the machine frame No. 1 and the machine frame No. 2, and T3 is the tension of the outlet of the machine frame No. 2.
When the welding seam is about to reach the welding seam of the No. 1 frame, the parameter setting of the leveling speed is carried out at the moment so as to ensure that the welding seam is not broken when stably passing through the No. 1 frame and the No. 2 frame. During the steady rolling process, the inlet strip speed V0 in steady state can generally reach 500m/min to 750m/min (first speed). And when the welding seam reaches the welding seam of the No. 1 frame, reducing the speed V0 of the inlet strip steel to 60m/min. At this time, the strip steel passes through the 1# frame gap at a speed of 60m/min, and the strip steel is raised to a normal speed after passing through the 2# frame gap. That is, V0 and L have the relationship: v0=60 m/min (second speed) when L is less than or equal to 30 m; when L > 30m, V0 is a normal speed greater than 60m/min.
S5: adjusting the strip steel tension of the double-rack temper mill according to the distance and the strip steel thickness;
in an embodiment of the present application, the adjusting the strip tension of the dual-rack leveler according to the distance and the strip thickness includes the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the strip steel tension corresponding to the first rack inlet, the second rack inlet and the second rack outlet of the double-rack temper mill to be T1, T2 and T3 respectively;
if not, calculating a coefficient a according to the thickness of the strip steel, and respectively reducing the strip steel tension corresponding to the first rack inlet, the second rack inlet and the second rack outlet to aT1, aT2 and aT3.
The specific steps of adjusting the strip tension of the dual-rack leveler according to the distance between the weld of the tin plate and the roll gap of the dual-rack leveler and the strip thickness are still described below with reference to fig. 4. Specifically, when the measured distance L > 30m, maintaining the tensions of the 1# frame inlet, the 2# frame inlet, and the 2# frame outlet as T1, T2, T3, respectively; when the distance L is less than or equal to 30m, the tensions of the inlet of the 1# rack, the inlet of the 2# rack and the outlet of the 2# rack are respectively a.times.T1, a.times.T2 and a.times.T3 (a is less than or equal to 1).
In the embodiment of the application, the expression between the coefficient a and the strip thickness h is:
s6: and adjusting the rolling force of the double-rack leveling machine according to the distance.
In an embodiment of the present application, the adjusting the rolling force of the dual-stand temper mill according to the distance includes the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the rolling forces corresponding to the first stand and the second stand of the double-stand leveling machine to be F1 and F2 respectively;
if not, respectively reducing the rolling force corresponding to the first stand and the second stand to a first rolling force and a second rolling force.
The specific steps of the rolling force of the double-stand temper mill according to the distance of the weld of the tin plate from the roll gap of the double-stand temper mill are still described below with reference to fig. 4. Specifically, when the measured distance L is more than 30m, the rolling force of the 1# frame is kept as F1, and the rolling force of the 2# frame is kept as F2; when the distance L is less than or equal to 30m, the rolling force of the No. 1 stand and the No. 2 stand is reduced to 2000KN. 3000KN. More specifically, the rolling force of the 1# frame and the rolling force of the 2# frame may be the same or different.
The embodiment of the application provides an online secondary cold rolling method for a tinning plate.
When a continuous annealing leveling machine of a certain factory is used for producing secondary cold rolled materials with the thickness of 0.159mm, the thickness of strip steel raw materials is 0.2mm, the rolling reduction rate of a 1 frame is 20%, and the leveling elongation rate of a 2 frame is 0.6%. During normal rolling, the rolling force of the No. 1 stand is 4000KN, the rolling force of the No. 2 stand is 2200KN, the inlet tension of the No. 1 stand of the temper mill is 23KN, the inlet tension of the No. 2 stand is 23KN, and the outlet tension of the No. 2 stand is 17KN. When the distance L between the welding line and the roll gap is less than or equal to 30m, the tension coefficient a takes a value of 0.45; the rolling force of the No. 1 stand and the No. 2 stand is 2000KN, and the speed of the temper mill is reduced to 60m/min. The actual production curve is shown in fig. 5, and it can be known that the method can ensure stable transition when the welding line position passes through the No. 1 frame, and the problem of belt breakage does not occur.
As shown in fig. 3, the application provides an on-line secondary cold rolling device for tinning plates, which comprises:
an input module 10 for inputting tin plates into the double-rack leveler;
a distance acquisition module 20, configured to acquire a distance between a welding seam of the tin plate and a roll gap of the double-rack leveling machine;
a thickness acquisition module 30 for acquiring the strip steel thickness of the tinplate;
a speed adjusting module 40 for adjusting the speed of the inlet strip steel of the double-rack temper mill according to the distance;
a tension adjustment module 50 for adjusting the strip tension of the dual-rack temper mill according to the distance and the strip thickness;
the rolling force adjusting module 60 is used for adjusting the rolling force of the double-rack leveling machine according to the distance.
The online secondary cold rolling device for the tinning plate provided by the application can be used for executing the online secondary cold rolling method for the tinning plate.
The online secondary cold rolling method and device for the tinplate can solve the problem of belt breakage during continuous rolling of the secondary cold rolled tinplate, can provide reasonable technological parameter setting methods and measures to realize online continuous rolling, improves rolling stability and shortens production period.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An on-line secondary cold rolling method for tinning plates, which is characterized by comprising the following steps:
inputting the tinning plate into a double-rack leveling machine;
obtaining the distance between the welding seam of the tin plate and the roll gap of the double-rack leveling machine;
obtaining the thickness of the strip steel of the tinning plate;
adjusting the speed of the inlet strip steel of the double-rack leveling machine according to the distance;
adjusting the strip steel tension of the double-rack temper mill according to the distance and the strip steel thickness;
and adjusting the rolling force of the double-rack leveling machine according to the distance.
2. The on-line secondary cold rolling method of tin plate according to claim 1, wherein said adjusting the inlet strip speed of the double-rack leveler according to the distance comprises the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the speed of the inlet strip steel at a first speed;
if not, the speed of the inlet strip steel is reduced from the first speed to the second speed.
3. The on-line secondary cold rolling method for tin plate according to claim 2, wherein the first speed range is: 500m/min-750m/min.
4. The on-line secondary cold rolling method for tin plate according to claim 2, wherein the second speed is 60m/min.
5. The on-line secondary cold rolling method of a tin plate according to claim 1, wherein the adjusting the strip tension of the double-rack leveler according to the distance and the strip thickness comprises the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the strip steel tension corresponding to the first rack inlet, the second rack inlet and the second rack outlet of the double-rack temper mill to be T1, T2 and T3 respectively;
if not, calculating a coefficient a according to the thickness of the strip steel, and respectively reducing the strip steel tension corresponding to the first rack inlet, the second rack inlet and the second rack outlet to aT1, aT2 and aT3.
6. The on-line secondary cold rolling method for tin plate according to claim 5, wherein the expression between the coefficient a and the strip thickness h is:
7. the on-line secondary cold rolling method of a tin plate according to claim 1, wherein the adjusting the rolling force of the double-rack leveler according to the distance comprises the steps of:
judging whether the distance is larger than a preset distance or not;
if yes, keeping the rolling forces corresponding to the first stand and the second stand of the double-stand leveling machine to be F1 and F2 respectively;
if not, respectively reducing the rolling force corresponding to the first stand and the second stand to a first rolling force and a second rolling force.
8. The on-line secondary cold rolling method of tin plate according to claim 7, wherein the first rolling force ranges from: 2000KN-3000KN.
9. The on-line secondary cold rolling method of tin plate according to claim 7, wherein the second rolling force ranges from: 2000KN-3000KN.
10. An on-line secondary cold rolling device for tinning plates, which is characterized by comprising:
the input module is used for inputting the tinning plate into the double-rack leveling machine;
the distance acquisition module is used for acquiring the distance between the welding seam of the tin plate and the roll gap of the double-rack leveling machine;
the thickness acquisition module is used for acquiring the strip steel thickness of the tinning plate;
the speed adjusting module is used for adjusting the speed of the inlet strip steel of the double-rack leveling machine according to the distance;
the tension adjusting module is used for adjusting the strip steel tension of the double-rack temper mill according to the distance and the strip steel thickness;
and the rolling force adjusting module is used for adjusting the rolling force of the double-rack leveling machine according to the distance.
CN202311074290.XA 2023-08-24 2023-08-24 Online secondary cold rolling method and device for tinning plate Pending CN117102254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311074290.XA CN117102254A (en) 2023-08-24 2023-08-24 Online secondary cold rolling method and device for tinning plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311074290.XA CN117102254A (en) 2023-08-24 2023-08-24 Online secondary cold rolling method and device for tinning plate

Publications (1)

Publication Number Publication Date
CN117102254A true CN117102254A (en) 2023-11-24

Family

ID=88803412

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311074290.XA Pending CN117102254A (en) 2023-08-24 2023-08-24 Online secondary cold rolling method and device for tinning plate

Country Status (1)

Country Link
CN (1) CN117102254A (en)

Similar Documents

Publication Publication Date Title
CN112296285A (en) Method for improving wrinkles of double-roller cast-rolled thin strip
CN104148404A (en) Hot rolled strip flatness automatic control method
CN112007950B (en) Rolling method of bundle strip steel with tensile strength of 500MPa
US2040442A (en) Method of treating sheet metal
US2060400A (en) Method of and apparatus for treating sheet metal
CN117102254A (en) Online secondary cold rolling method and device for tinning plate
CN110314939B (en) Strip steel head flattening method by utilizing flattening unit
JP6922873B2 (en) Temperable rolling method, temper rolling equipment and steel sheet manufacturing method
CN110125190B (en) Method and device for preventing edge crack of strip steel in rolling
CN108213088A (en) The control method of smooth flow quantity in a kind of cold-rolled steel sheet wet jetting piles operation of rolling
CN114054513B (en) Control method and device for strip steel tension in double-rack temper mill
JPS5947602B2 (en) Strip steel rolling method and equipment
CN105032932B (en) A kind of processing method of cold-strip steel side pincher
CN114632823A (en) Method for improving prediction precision of wide and thick plate rolling force model
CN109420682A (en) A kind of board-shape control method of cold-rolled thin steel strip
CN110153197B (en) Loop tension control method and system for continuous rolling annealing pickling line
JP2738280B2 (en) Manufacturing method of external constant parallel flange channel steel
CN110280600B (en) Strip steel surface appearance control method
CN110227724B (en) Parameter control method for six-roller cold rolling temper mill for continuous annealing of welding seam
CN111300073A (en) Continuous flattening unit for improving shape of hot-rolled coil
CN112872106B (en) Method for straightening low-carbon steel by using withdrawal and straightening machine
CN112828138B (en) Stretch bending and straightening production method of aluminum foil thin material
TW201831241A (en) Method and device for rolling metal strips
SU1500405A1 (en) Method of manufacturing pipes in continuous pipe-welding machine
CN110193515B (en) Rolling method of austenitic stainless steel hard plate

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination