CN101102856A - Method for the cold rolling of metallic rolled stock - Google Patents
Method for the cold rolling of metallic rolled stock Download PDFInfo
- Publication number
- CN101102856A CN101102856A CNA2006800021957A CN200680002195A CN101102856A CN 101102856 A CN101102856 A CN 101102856A CN A2006800021957 A CNA2006800021957 A CN A2006800021957A CN 200680002195 A CN200680002195 A CN 200680002195A CN 101102856 A CN101102856 A CN 101102856A
- Authority
- CN
- China
- Prior art keywords
- roll
- industrial gasses
- temperature
- carbon dioxide
- stocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control
- B21B37/32—Control of flatness or profile during rolling of strip, sheets or plates using roll camber control by cooling, heating or lubricating the rolls
-
- 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
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- 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
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
-
- 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
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
-
- 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
- B21B38/006—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention is based on a known method for the cold rolling of metallic rolled stock (4) , which for plastic deformation enters a roll gap (3) formed between oppositely rotating rolls (1, 2) on a run-in side and leaves the roll gap on a run-out side, deformation heat that is produced being removed by supplying an industrial gas which is at a lower temperature than the rolled stock. In order on this basis to provide a cold rolling method with which, on the one hand, corrosion of the surfaces of the rolled stock and the surfaces of the rolls in the region of the roll .gap is effectively prevented and with which, on the other hand, condensation of moisture on the rolls and a reduction of the oxygen content of the ambient air of relevance to health as a result of the supply of large amounts of inert gas are avoided, it is proposed according to the invention that a measured value for the surface temperature of at least one of the rolls is determined, and that the supply of industrial gas is set on the basis of the measured value.
Description
Technical field
The present invention relates to a kind of method that is used for cold rolling of metallic rolled stock, described stocking enters the roll gap that forms for plastic deformation between counterrotating roll at input side, and leaving this roll gap at outlet side, the industrial gasses that are lower than stocking by supply temperature are removed the distortion heat that is produced.
Background technology
The form of band, shaped steel or steel plate, non-ferrous metal, aluminium or other metal---for example with---sends into milling train seat and cold forming therein continuously in cold-rolling practice, with strip plate.Opposite with method for hot forming, stocking did not heat before plastic deformation.
Metal makes it produce favourable performance variation in the variation that is lower than the shape under the corresponding recrystallization temperature, and for example intensity and hardness increase.Yet, the deformation energy that is incorporated in the stocking causes the internal friction effect, and therefore produces heat, and described heat has changed the material property of stocking on the one hand, and cause the heating gradually of milling train seat on the other hand, and the performance of product such as surface and the flatness and the oxidation of rolled strip have therefore been changed.
For fear of this point, for example in EP0054172A1, propose to cool off fluid power ground with lubricator and the working face of roll is separated with stocking and stocking is cooled off by use.For the coefficient of friction between the surface of the surface that influences stocking and roll, except being ejected into the cold-rolling oil emulsion in the roll gap, also according to the strap tension value that records in the downstream of milling train seat before rolled strip enters in the milling train seat with on the cold rolling surface that is applied to rolled strip with base oil.Base oil is applied in addition the flatness that can influence cold-strip on the rolled strip.
Yet, have now found that especially be discharged in the lubricant from the lemel in the forming process, the result influences the performance and the lubricity of lubricant.Cooling another shortcoming with lubricator is that they are partly stayed on the surface, and further must difficultly remove before the machining rolled strip.
As a solution of this problem, what propose in DE19953230 is the universal method mentioned of beginning, and its temperature is blown into the roll gap district from input side with from outlet side than the stocking temperature is low in the roll gap the gaseous state or the inert gas of liquid form.The result; stocking by roll gap is locally bathed in the inert gas; therefore the local here protective atmosphere that forms prevents the corrosiveness on stocking surface and roller surface in the roll gap district, by so-called " gas cooled is lubricated " rubbing action in the roll gap is reduced simultaneously.Nitrogen, rare gas or carbon dioxide are suggested as inert gas.
With lubricator opposite with the liquid cools of routine, the inert gas that is used for " gas cooled is lubricated " has the protective effect of good especially anti-oxidation by replacing surrounding air fully, and avoids residual lubricant on the surface of stocking.Yet, the method on the cooling stocking surface that is proposed may cause condensate moisture, and when leaving inert gas environment, stocking produces corrosiveness, and on the other hand, reduce owing to a large amount of inert gases of supply make the oxygen content in the surrounding air, this may cause near the personnel that work the milling train seat to produce health problem.
Summary of the invention
Given this, the present invention is based on provides a kind of purpose of avoiding the cold-rolling practice of the problems referred to above.
On the basis of the universal method mentioned of beginning, according to the present invention by measure in the roll at least one the surface temperature measurement value and the industrial gasses that set according to this measured value by supply achieve this end.
According to the present invention, the improvement of the known method that is used for " gas cooled lubricated " mainly is to supply industrial gasses in a controlled manner according to the surface temperature of at least one roll.As a result, under the situation of using minimum industrial gasses, make the temperature of roll keep constant, that is to say, offset the heating gradually of roll and cooling gradually.Because only supply is used for removing the frictional heat at the distortion heat of roll gap and roll bearing place and is used to set the required so much industrial gasses of temperature of roller surface, so that the composition variation of surrounding air is the least possible.
Simultaneously, with because the heating problem relevant with variation that sub-cooled and avoided in roll or the identical mode of the lip-deep condensation of stocking is followed with the corrosiveness on stocking surface.
A surface temperature roll place is therein measured, or averages subsequently in many rolls place mensuration.Known temperature measuring method especially measuring method is suitable for measuring.
The industrial gasses that are applicable to " gas cooled is lubricated " are inert gas such as nitrogen, argon gas, carbon dioxide and their mixture, but air is also suitable, as following being described in more detail.
Verified, if measure the surface temperature measurement value of roll at input side then be favourable.
Owing to absorb the heat that rubbing action produced between stocking plastic deformation and roll and the stocking, along with roll turns to outlet side around its rotation from input side, the surface temperature of roll increases.In addition, roll is heated by the frictional heat that the bearing place produces.Therefore in the outlet side zone, the surface temperature of roll is under its maximum temperature, and irregular peak temperature can be arranged, described irregular peak temperature in the entrance side zone by the industrial gasses leveling of prior supply and can not distort.Therefore, the surface temperature of roll in the input side zone is particularly suitable for measuring to determine necessary industrial gasses amount as a kind of.
About this point, also verified, if industrial gasses be directed at least one the outer cylinder surface in the roll then be successful.
Opposite with above-mentioned known method, under this modification situation of this method, industrial gasses are not to be fed on the surface of stocking or directly to be fed in the roll gap, but directly are fed on the surface of roll.Under the situation of the method according to this invention, what note especially is that surface temperature with roll is set in predetermined temperature or the predetermined temperature range.Directly the cooling roll has been guaranteed fully or major part is removed the distortion heat in the roll gap and the frictional heat at roll bearing place.
Given this, prove at outlet side and industrial gasses are directed to advantageous particularly on the outer cylinder surface of roll.
As mentioned above, the surface temperature of roll is under its maximum temperature in the outlet side zone.Therefore the outlet side at roll uses industrial gasses the most effective, because heat is transmitted the temperature difference maximum between necessary roller surface and the industrial gasses, the result can make required industrial gasses amount reduce to minimum.
The utilization ratio that has further improved industrial gasses is used in the HI high impact on industrial gasses breaker roll surface.Therefore, in the advantageous variant of this method, industrial gasses are ejected on the outer cylinder surface of roll.
The HI high impact injection of industrial gasses makes and can further reduce required gas flow.
If industrial gasses are directed on the roll with cooling agent stream, and the main flow direction of this cooling agent stream is substantially perpendicular to the outer cylinder surface of roll, then can further improve the utilization ratio of gas.
This measure especially is easy to set the HI high impact pulse when also making on the surface that inert gas is ejected into roll.
Industrial gasses are with the cryogenic gaseous form supply, but preferably with the liquid form supply.Under the particularly preferred modification situation of the method according to this invention, the gas that will contain carbon dioxide is as industrial gasses.
Carbon dioxide is cheap and can handle easily.
If it is liquid that carbon dioxide keeps in supply line at ambient temperature, and be directed at least one the outer cylinder surface of outlet side in the roll as low-temperature carbon dioxide gas or with the form of the mixture of dry ice and carbon dioxide, then be easy to especially handle.
Carbon dioxide keeps liquid condition for use under the situation that does not have complicated cooling provision in supply line.Even this storage of preferred liquid carbon dioxide according to the present invention in supply line be the also pressure of a needs appropriateness at ambient temperature.When liquid carbon dioxide expanded under environmental pressure, liquid carbon dioxide was transformed into solid-state and gaseous carbon dioxide.The necessary for this reason evaporation and the heat of sublimation make the carbon dioxide cooling, and remove heat from roller surface especially effectively.
Carbon dioxide is directed to this fact on the outer cylinder surface of outlet side of at least one roll and has avoided the surface of damage stocking, if the dry ice that forms is pulled in the roll gap, then may damage the surface of stocking when liquid carbon dioxide expands under environmental pressure.A small amount of unworn dry ice sublimation does not stay any residue on the stocking of roll outlet side.
The liquid carbon dioxide of supplying by the supply line of roll preferably is ejected on the surface of roll to be cooled with high impact forces via the form of at least one nozzle with gaseous state and solid-state (dry ice).
In another preferred variation of the method according to this invention, use the industrial gasses that contain Cryogenic air liquefaction or gaseous state.
Industrial gasses are with gaseous form but preferably be fed to surface to be cooled with liquid form.Utilize air cooling not have air pollution problems in the workspace,, also can keep using more industrial gasses safely therefore when the low especially roller surface temperature of hope or want to remove a large amount of especially when hot.Have been found that when setting low temperature level, in the air oxygen containing ratio be not the key of roll and stocking oxidation.
According to the supplying artificial ground of the average surface temperature of roll control industrial gasses or automatically carry out.Yet, preferably the surface temperature of roll is remained on the setting value place by automaton, wherein with the through-flow of industrial gasses or can with the through-flow parameter that is associated of industrial gasses as performance variable.
Keep the necessary industrial gasses demand of surface temperature through-flow or volume is through-flow sets by the quality that changes industrial gasses by means of automaton.The precision that control can reach according to automatic temperature-adjusting can further make the use of industrial gasses minimize.
Verified, if the setting value of roller surface temperature be in stocking the maximum temperature of input side+scope between/-20% in then be successful.
Can be the constant set temperature value in the permissible range with the surface temperature control of roll, this permissible range be in roll the maximum temperature of input side+/-20% between, only guarantee that perhaps surface temperature remains in this permissible range.
Preferably, the cooling section that extends along a longitudinal axis that is parallel to roll is directed to industrial gasses on the roll.
Cooling section extends on the major part of the whole length of roll or whole length, makes the surface that can cool off roll and stocking especially equably, thereby reduces stress and change of shape by local temperature difference caused.For industrial gasses being administered on the roll to be cooled along cooling section, preferably use an injection apparatus, this injection apparatus is installed along the longitudinal axis of roll and at the outlet side of stocking.
Description of drawings
Illustrate in greater detail the present invention according to exemplary embodiment and accompanying drawing below, wherein, as single accompanying drawing,
Fig. 1 illustrates the side view of the milling train seat that has coolant jet with schematic diagram, and described coolant jet is installed in the outlet side of roll, be used for according to as method provided by the present invention automatically control the supply of cooling agent.
The specific embodiment
The schematically illustrated cooling milling train seat with two rolls 1,2 of Fig. 1, a top that vertically is arranged on another in described two rolls 1,2 forms roll gap 3 between them.The stocking of metal tape 4 forms passes this roll gap 3 drawings along the direction of arrow 9.
Be provided with nozzle 5 on the band conveyor side " B " of milling train seat, described nozzle 5 is fed to the cooling agent of liquid form on the surface of roll.Nozzle 5 forms the tubular nozzle that extends along the whole length of two rolls 1,2.The liquid jet 6 that penetrates from nozzle 5 is directed into the surface of roll 1,2, and vertically extend with respect to the outer cylinder surface 20 of each roll 1,2 the main direction of propagation---5a represents by dotted line---of jet 6.
Measurement point 11 places on band approaching side " A " utilize the surface temperature of pyrometer 7 and 8 record rolls 1 and 2.Pyrometer 7 and 8 respectively is connected on temperature controller 9 and 10, by the measured value of described temperature controller 9 and 10 records and evaluation form surface temperature, to be used to control the supply of cooling agent.
For this reason, be equipped with pneumatically actuated flow passage control valve 14 and 15 in cooling agent supply line 12,13, described control valve 14 and 15 is connected respectively in the temperature controller 9,10 one.
For making cold rolling support running, drive roll 1,2 with rotation mode, drawing stocking 4 passes roll gap 3 thus, stands plastic deformation simultaneously.Write down the surface temperature of rolls 1 and 2 by pyrometer 7,8, and measured value is delivered on the temperature controller 9,10.By temperature controller 9,10 with the surface temperature control of roll 1,2 to predetermined set value, described setting value can-20 ℃ and+temperature range between 60 ℃ in.In this exemplary embodiment, setting value is set at 20 ℃.For this reason, performance variable is mass flow or the volume flow that is ejected into the cooling agent on the roll 1,2, and this cooling agent is fed to nozzle 5 by control valve 14,15.
Liquid carbon dioxide is used as cooling agent, and supply to the supply line 12,13 from liquefied gas tank 18 by feeding line 16, this feeding line 16 can be closed by ball valve 17, and carbon dioxide is to become liquid aggregate state to be arranged in supply line 12,13 in the temperature range of 252-304K under the pressure of 19-73 crust.
Preferably, under the pressure of the temperature of about 292K and 56 crust with the liquid form supplying carbon dioxide.When liquid carbon dioxide left nozzle 5, the form of (it with) gaseous carbon dioxide and dry ice impacted on the surface of roll with high impact forces.The evaporation of carbon dioxide and distillation make cools off roll 1,2 very effectively.
Claims (13)
1. the method that is used for cold rolling of metallic rolled stock (4), described metal stocking (4) enters the roll gap (3) that forms for plastic deformation between counterrotating roll (1,2) at input side (A), and leave this roll gap (3) at outlet side (B), the distortion heat that is produced is removed by the industrial gasses that supply temperature is lower than stocking (4), it is characterized in that, measure at least one the surface temperature measurement value in the roll (1,2), and set the supply of industrial gasses according to this measured value.
2. method according to claim 1 is characterized in that, measures the surface temperature measurement value of roll (1,2) at input side (A).
3. method according to claim 1 and 2 is characterized in that, industrial gasses are directed at least one the outer cylinder surface (20) in the roll (1,2).
4. method according to claim 3 is characterized in that, at outlet side (B) industrial gasses is directed on the outer cylinder surface (20) of roll (1,2).
5. according to claim 3 or 4 described methods, it is characterized in that, industrial gasses are ejected on the outer cylinder surface (20) of roll (1,2).
6. according to each described method among the claim 3-5, it is characterized in that with cooling agent stream industrial gasses are directed on the roll (1,2), the outer cylinder surface (20) with roll (1,2) is vertical basically for the main flow direction (5a) of this cooling agent stream.
7. according to each described method in the aforementioned claim, it is characterized in that the gas that will contain carbon dioxide is as industrial gasses.
8. method according to claim 7, it is characterized in that, it is liquid that carbon dioxide keeps in supply line (12,13) at ambient temperature, and be directed at least one the outer cylinder surface of outlet side (B) in the roll (1,2) as low-temperature carbon dioxide gas or with the form of the mixture of dry ice and carbon dioxide.
9. according to each described method in the aforementioned claim, it is characterized in that, use the industrial gasses that contain Cryogenic air liquefaction or gaseous state.
10. according to each described method in the aforementioned claim, it is characterized in that industrial gasses contain low temperature inert gas liquefaction or gaseous state.
11. according to each described method in the aforementioned claim, it is characterized in that, by automaton the surface temperature of roll is remained on the setting value place, wherein with the through-flow of industrial gasses or can with the through-flow parameter that is associated of industrial gasses as performance variable.
12. method according to claim 11 is characterized in that, the setting value of the surface temperature of roll be in stocking (4) the maximum temperature of input side (A)+scope between/-20% in.
13., it is characterized in that the cooling section that extends along a longitudinal axis (19) that is parallel to roll is directed to industrial gasses on the roll (1,2) according to each described method in the aforementioned claim.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005001806.8 | 2005-01-13 | ||
| DE200510001806 DE102005001806A1 (en) | 2005-01-13 | 2005-01-13 | Method for cold rolling of metallic rolling stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101102856A true CN101102856A (en) | 2008-01-09 |
Family
ID=35840283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800021957A Pending CN101102856A (en) | 2005-01-13 | 2006-01-06 | Method for the cold rolling of metallic rolled stock |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1838470A1 (en) |
| CN (1) | CN101102856A (en) |
| BR (1) | BRPI0606654A2 (en) |
| DE (1) | DE102005001806A1 (en) |
| WO (1) | WO2006074875A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001122A (en) * | 2016-06-20 | 2016-10-12 | 王永志 | Steel rolling device |
| CN110732554A (en) * | 2019-10-23 | 2020-01-31 | 中南大学 | cryogenic preparation method for preparing lithium/copper/lithium foil |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2200762B1 (en) | 2007-08-28 | 2014-08-06 | Air Products and Chemicals, Inc. | Method and apparatus for discharging a non-linear cryogen spray across the width of a mill stand |
| BRPI0815928A2 (en) | 2007-08-28 | 2017-05-16 | Air Prod & Chem | equipment for use with a system that has a cryogenic cooling component, method used with a system that has a cryogenic cooling component |
| BRPI0815930A2 (en) | 2007-08-28 | 2015-09-29 | Air Prod & Chem | method, and apparatus for use with a cold rolling process |
| GB2466458B (en) * | 2008-12-19 | 2011-02-16 | Siemens Vai Metals Tech Ltd | Rolling mill temperature control |
| EP2489446A1 (en) * | 2011-02-17 | 2012-08-22 | Linde Aktiengesellschaft | Nozzle header |
| EP2905090A1 (en) * | 2014-02-06 | 2015-08-12 | Linde Aktiengesellschaft | Method for rolling a metal strip or foil |
| DE102016207138B4 (en) | 2016-04-27 | 2018-05-30 | Sms Group Gmbh | Method and device for cooling a tool |
| CN108906889B (en) * | 2018-05-08 | 2019-08-27 | 中南大学 | A kind of deep cooling asynchronous rolling method preparing high-performance CrCoNi medium entropy alloy foil |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE608096C (en) * | 1932-06-23 | 1935-01-15 | Walter Rockwell Clark | Device for supplying a temperature-changing agent to the outer surface of at least one roller of a rolling mill |
| DE867836C (en) * | 1949-12-23 | 1953-02-19 | Theo Dipl-Ing Dr-Ing Muenker | Device for the production of rolled products by rolling |
| DE3170883D1 (en) * | 1980-12-12 | 1985-07-11 | Schloemann Siemag Ag | Method of and arrangement for rolling stress-free strip |
| CA2086007C (en) * | 1991-05-03 | 1999-04-13 | Rolf Lehmann | Roll with adjustable deflection and its use |
| DE19953230C2 (en) * | 1999-11-04 | 2003-08-28 | C D Waelzholz Produktionsgmbh | Cold rolling process |
| US6675622B2 (en) * | 2001-05-01 | 2004-01-13 | Air Products And Chemicals, Inc. | Process and roll stand for cold rolling of a metal strip |
| JP2004314086A (en) * | 2003-04-11 | 2004-11-11 | Nippon Steel Corp | Cold rolling method of metallic band |
-
2005
- 2005-01-13 DE DE200510001806 patent/DE102005001806A1/en not_active Ceased
-
2006
- 2006-01-06 CN CNA2006800021957A patent/CN101102856A/en active Pending
- 2006-01-06 WO PCT/EP2006/000070 patent/WO2006074875A1/en active Application Filing
- 2006-01-06 BR BRPI0606654-2A patent/BRPI0606654A2/en not_active IP Right Cessation
- 2006-01-06 EP EP06700773A patent/EP1838470A1/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106001122A (en) * | 2016-06-20 | 2016-10-12 | 王永志 | Steel rolling device |
| CN110732554A (en) * | 2019-10-23 | 2020-01-31 | 中南大学 | cryogenic preparation method for preparing lithium/copper/lithium foil |
| CN110732554B (en) * | 2019-10-23 | 2020-12-29 | 中南大学 | Cryogenic preparation method for preparing lithium/copper/lithium foil |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005001806A1 (en) | 2006-07-20 |
| WO2006074875A1 (en) | 2006-07-20 |
| BRPI0606654A2 (en) | 2009-07-07 |
| EP1838470A1 (en) | 2007-10-03 |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |