US20080245448A1 - Method for Producing Metal Sheets from a Magnesium Melt - Google Patents
Method for Producing Metal Sheets from a Magnesium Melt Download PDFInfo
- Publication number
- US20080245448A1 US20080245448A1 US11/576,805 US57680505A US2008245448A1 US 20080245448 A1 US20080245448 A1 US 20080245448A1 US 57680505 A US57680505 A US 57680505A US 2008245448 A1 US2008245448 A1 US 2008245448A1
- Authority
- US
- United States
- Prior art keywords
- metal sheets
- rolling
- strip
- rolled
- magnesium melt
- 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.)
- Abandoned
Links
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 22
- 239000011777 magnesium Substances 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 62
- 238000005096 rolling process Methods 0.000 claims abstract description 42
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000000137 annealing Methods 0.000 claims description 2
- 238000005097 cold rolling Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
-
- 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
- B21B1/30—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 in a non-continuous process
- B21B1/32—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 in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/36—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 in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0014—Cutting or shearing the product transversely to the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0021—Cutting or shearing the product in the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/002—Piling, unpiling, unscrambling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
- B21B39/32—Devices specially adapted for turning sheets
-
- 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
- B21B45/004—Heating the product
Landscapes
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Continuous Casting (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
A method for producing metal sheets from a magnesium melt, comprises the following steps: producing the magnesium melt, casting the magnesium melt to a cast strip, immediately after casting, strip-rolling the cast strip to a rolled strip, cross-cutting the rolled strip to metal sheets, rolling the metal sheets to a final thickness, the rolling of metal sheets being carried out, in relation to the metal sheets, in a direction a at right angle to the rolling direction of the strip-rolling, said direction being maintained during the entire rolling of the metal sheets. The method according to the invention enables very wide sheets to be produced in a simple way which meet the end user's requirements.
Description
- The invention relates to a method for producing metal sheets from a magnesium melt.
- Magnesium flat products are increasingly used in the field of car body construction and comparable application areas for the production of particularly light and at the same time inherently stable component parts.
- So-called “continuous casting and rolling” represents an advantageous way of producing strip with a certain thickness, wherein a metal melt is cast to a strip in a thickness close to final dimension and directly afterwards is hot-rolled inline to a hot-rolled strip. The resulting cast and hot-rolled strip is then processed further. In this case, other rolling steps or forming operations as well as annealing treatments may be included (
DE 100 52 423 C1). - The width of the strip produced in this way is limited by the width of the roll gap of the roll stand used for its forming. Only so-called “slit strip”, the width of which is less than the width of the original product, can be separated from this strip by lengthwise cutting. However, on the part of the users of such flat products the demand not only exists for a wide spectrum of the most varied thicknesses, but there is also a requirement for widths adapted to the respective intended purpose, which exceed the widths which can be produced on conventional mill trains.
- Based on the prior art explained above, the object of the invention consisted of indicating a method, which in a simple way enables magnesium metal sheets of greater width and good mechanical properties to be produced.
- This object has been achieved by a method of the kind described initially, which for the production of magnesium metal sheets comprises the following steps:
-
- producing the magnesium melt,
- casting the magnesium melt to a cast strip,
- immediately after casting, strip-rolling the cast strip to a rolled strip,
- cross-cutting the rolled strip to metal sheets,
- rolling the metal sheets to a final thickness, the rolling of metal sheets being carried out, in relation to the metal sheets, in a transverse direction to the rolling direction of the strip-rolling, said direction being maintained during the entire rolling of the metal sheets.
- In accordance with the invention, firstly a cast strip, which possesses a certain width limited by the machinery used for rolling, is produced from a magnesium melt in the presently known way. Subsequently, sheets are separated from this strip. These metal sheets are then rolled at right angle to the longitudinal direction of the strip-rolling, if necessary in several passes for such time, until on the one hand the desired width and on the other hand the required thickness are reached. “Rolling direction of the metal sheets” here always means the direction, in which the metal sheet enters the next rolling pass. That is to say, the metal sheet still aligned in the longitudinal direction of the strip immediately after being separated from the cast and rolled strip, is turned for example about an axis perpendicular to the metal sheet surface, so that its direction originally aligned equal to the longitudinal direction of the strip is now aligned at an angle to this. In this way, very wide sheets that meet the requirements of the end user can be produced with a technically particularly simple process.
- It is clear that metal sheets produced according to the invention have good mechanical properties and a structure, which is advantageous for their subsequent processing. In this case, the deviations between the properties determined in the longitudinal direction, cross-direction and diagonal direction of the metal sheets produced according to the invention are small. Apart from the advantage of being able to produce a wide metal sheet the positive effects, which are already described in the technical literature for rolling magnesium metal sheets, using repeated directional changes, (Beck, Adolf “Magnesium and its alloys”, Springer, 2nd edition 2001, chapter: Technology of rolling) already arise with the process steps according to the invention. It is surprising in this case that the resulting characteristic improvements occur with the rolling method according to the invention, although the metal sheets separated from the strip are only moved once, so that their alignment during rolling deviates from the alignment, with which the strip has been rolled.
- In order to achieve particularly good ductility and uniform distribution of the good mechanical properties of metal sheets produced according to the invention, the inventive method should be carried out so that the metal sheets obtained have little segregation. For this purpose, it may be advantageous to heat the metal sheets to an initial rolling temperature in particular above 200° C. if the temperature of the metal sheets is below 200° C. Typical initial rolling temperatures in this case lie within a range of 200° C. to 450° C.
- Rolling the metal sheets may be carried out if necessary in several rolling passes, in order to produce particularly thin, wide metal sheets. If multi-pass rolling is used, it is advantageous if the metal sheets are heated to an initial rolling temperature between each rolling step in the presently known way.
- The invention is described below in detail on the basis of a drawing illustrating an exemplary embodiment, wherein there are shown:
-
FIG. 1 a production line for producing wide metal sheets from a magnesium melt in schematic illustration from above; - Diag. 1 the yield point Rp0.2 and tensile strength recorded in each case in longitudinal direction, cross-direction and diagonal direction for a magnesium strip cold-rolled lengthwise in the conventional way and a magnesium strip cold-rolled at right angle in the way according to the invention.
- The
production line 1 comprises a smeltingvessel 2 from which magnesium melt S is continuously fed by means of anozzle 3 into the casting slit, not illustrated, of a two-roller strip-casting machine 4. - The strip-
casting machine 4 in the presently known way has two casting rollers arranged vertically one above the other, not illustrated here, which between them limit the horizontally running casting slit. - The cast magnesium strip M leaving the strip-
casting machine 4 is continuously conveyed in an operation following the strip-casting into a rollingstand 5 positioned inline with the strip-casting machine 4, in which it is rolled to a hot-rolled strip W of for example 6.5 mm in thickness. From the hot-rolled strip W leaving theroll stand 5, metal sheets B are separated by means of cross-cutting shears 6 arranged inline in the conveying direction F behind theroll stand 5. If necessary, before the cross-cutting shears 6 the hot-rolled strip W is trimmed along its sides by a trimming machine, not illustrated. - The metal sheets B separated from the hot-rolled strip W have a rectangular shape when viewed from above the longitudinal sides LS of which aligned in the longitudinal direction L of the magnesium strip M are narrower than their transverse sides QS aligned at right angle to the longitudinal direction L of the hot-rolled strip W. Their width is equal to the width b of the hot-rolled strip W.
- From the cross-cutting shears 6, the metal sheets B reach a
conveyor section 7, at the end of which they are picked up by theswivel arm 8 of astacker device 9. Theswivel arm 8 is pivotably arranged about avertical axis 10 so that it rotates about thevertical axis 10 with a 90° turn. The metal sheet B picked up in each case thereby rotates 90° about anaxis 11 normally aligned with the top side of the metal sheet B. - The
stacker device 9 places the metal sheets B on astack 12. In this position the long sides LS of the metal sheets B are aligned at right angle to the longitudinal direction L of the hot-rolled strip W. - A
conveyor device 13 in each case takes one of the stacked metal sheets B to a cold-rollingmill 14 so that firstly with its one short longitudinal side LS1 it enters the roll gap, not illustrated, of the cold-rollingmill 14. The respective metal sheet B in this way is rolled in a rolling direction Q, which is aligned at right angle, that is to say offset 900, to the longitudinal direction L with which the hot-rolled strip W has been originally rolled. By 6-fold cold-rolling with intermediate heating in a furnace 15 a 0.9 mm thick metal sheet Bf, the length LBf of which is substantially greater than the width B of the hot-rolled strip W, is finish-rolled from the 6.5 mm thick metal sheet B in each case. - The resulting metal sheets Bf are finally annealed at 330-360° C.
- The finished, finally-annealed metal sheets Bf have good mechanical properties. Thus, in the case of the magnesium metal sheets Bf examined here the yield point Rp0.2 were in the range of 165-170 N/mm2, the tensile strength Rm in the range of 250-270 N/mm2 and the elongations A50 in the range of 15-20%.
- Diagram 1 compares the Rm, Rp0.2 and A50 values for lengthwise- and cross-rolled metal sheets, wherein the values illustrated as lines represent the lengthwise-rolled material and the rectangles, dots and stars represent the measured values for cross-rolled material.
-
- 1 production line
- 2 smelting vessel
- 3 nozzle
- 4 two-roller strip-casting machine
- 5 roll stand
- 6 cross-cutting shears
- 7 conveyor section
- 8 swivel arm
- 9 stacker device
- 10 vertical axis of the swivel arm
- 11 axis about which the metal sheets B are turned
- 12 metal sheet stack
- 13 conveyor device
- 14 cold-rolling mill
- 15 furnace
- B metal sheets
- Bf finish-rolled metal sheet
- b width of the hot-rolled strip W
- F conveyor direction
- L longitudinal direction of the magnesium strip M
- LBf length of the finish-rolled metal sheet Bf
- LS longitudinal sides of the metal sheets B
- LS1 longitudinal side, with which the respective metal sheet B enters the cold-rolling mill
- M magnesium strip
- QS transverse sides of the metal sheets B
- S magnesium melt
- W hot-rolled strip
Claims (5)
1. A method for producing metal sheets from a magnesium melt comprises the following steps:
producing the magnesium melt,
casting the magnesium melt to a cast strip,
immediately after casting, strip-rolling the cast strip to a rolled strip,
cross-cutting the rolled strip to metal sheets,
rolling the metal sheets to a final thickness, the rolling of metal sheets being carried out, in relation to the metal sheets, in a direction at a right angle to the rolling direction of the strip-rolling, said direction being maintained during the entire rolling of the metal sheets.
2. Method according to claim 1 , wherein rolling of the metal sheets is carried out in several rolling passes.
3. Method according to claim 1 , wherein the metal sheets are heated to an initial rolling temperature, if their temperature is below 200° C.
4. Method according to claim 2 , wherein the metal sheets are heated to an initial rolling temperature between each rolling step.
5. Method according to claim 1 , wherein the finish-rolled metal sheets are subjected to final annealing at 330° C.-360° C.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004048805 | 2004-10-07 | ||
DE102004048805A DE102004048805B3 (en) | 2004-10-07 | 2004-10-07 | Process for producing sheets from a magnesium melt |
PCT/EP2005/010801 WO2006040080A1 (en) | 2004-10-07 | 2005-10-07 | Method for producing metal sheets from a magnesium melt |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080245448A1 true US20080245448A1 (en) | 2008-10-09 |
Family
ID=35445965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/576,805 Abandoned US20080245448A1 (en) | 2004-10-07 | 2005-10-07 | Method for Producing Metal Sheets from a Magnesium Melt |
Country Status (11)
Country | Link |
---|---|
US (1) | US20080245448A1 (en) |
EP (1) | EP1802405B1 (en) |
JP (1) | JP5046944B2 (en) |
KR (1) | KR101208721B1 (en) |
CN (1) | CN101035634A (en) |
AT (1) | ATE397500T1 (en) |
AU (1) | AU2005293768B2 (en) |
CA (1) | CA2581780A1 (en) |
DE (2) | DE102004048805B3 (en) |
PL (1) | PL1802405T3 (en) |
WO (1) | WO2006040080A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103042060A (en) * | 2012-10-15 | 2013-04-17 | 孙逸成 | Production line for preparing magnesium alloy sheets by semi-melt extrusion method and technology of production line |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006036223B3 (en) | 2006-08-03 | 2007-08-30 | Thyssenkrupp Steel Ag | Production line for producing a thin magnesium strip comprises a coiler having a coiling sleeve fixed coaxially to the rotary axis of a coiler mandrel |
DE102006036224B3 (en) | 2006-08-03 | 2007-08-30 | Thyssenkrupp Steel Ag | Production line for magnesium strip has at least one device to feed additional metal strip into winding device |
KR101696993B1 (en) * | 2015-01-06 | 2017-01-23 | 백진욱 | Method for manufacturing thin magnesium sheet |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1941608A (en) * | 1933-02-02 | 1934-01-02 | Dow Chemical Co | Rolling magnesium alloy |
US2979398A (en) * | 1958-07-03 | 1961-04-11 | Dow Chemical Co | Magnesium-base alloy |
US20040079513A1 (en) * | 2000-10-23 | 2004-04-29 | Hans Pircher | Method for producing a magnesium hot strip |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5467546A (en) * | 1977-11-08 | 1979-05-31 | Kawasaki Steel Co | Plate rolling method |
JP4278256B2 (en) * | 2000-01-06 | 2009-06-10 | 日本金属株式会社 | Warm plastic working method |
JP3521863B2 (en) * | 2000-10-24 | 2004-04-26 | 住友金属工業株式会社 | Manufacturing method of magnesium alloy sheet |
JP2002348646A (en) * | 2001-05-25 | 2002-12-04 | Nippon Crose Rolling Corp | Long size coil of wrought magnesium alloy and manufacturing method therefor |
DE10156034B4 (en) * | 2001-11-15 | 2012-05-03 | Techmag Ag | Device for the production of profiles or sheet metal parts from magnesium or magnesium alloys |
JP2004010959A (en) * | 2002-06-06 | 2004-01-15 | Mitsui Mining & Smelting Co Ltd | Property improving method of magnesium sheet and plate,and magnesium alloy sheet and plate |
JP3503898B1 (en) * | 2003-03-07 | 2004-03-08 | 権田金属工業株式会社 | Method and apparatus for manufacturing magnesium metal sheet |
-
2004
- 2004-10-07 DE DE102004048805A patent/DE102004048805B3/en not_active Expired - Fee Related
-
2005
- 2005-10-07 PL PL05796633T patent/PL1802405T3/en unknown
- 2005-10-07 JP JP2007535094A patent/JP5046944B2/en not_active Expired - Fee Related
- 2005-10-07 AT AT05796633T patent/ATE397500T1/en not_active IP Right Cessation
- 2005-10-07 US US11/576,805 patent/US20080245448A1/en not_active Abandoned
- 2005-10-07 CA CA002581780A patent/CA2581780A1/en not_active Abandoned
- 2005-10-07 DE DE502005004356T patent/DE502005004356D1/en active Active
- 2005-10-07 AU AU2005293768A patent/AU2005293768B2/en not_active Ceased
- 2005-10-07 EP EP05796633A patent/EP1802405B1/en not_active Not-in-force
- 2005-10-07 CN CNA2005800343053A patent/CN101035634A/en active Pending
- 2005-10-07 KR KR1020077010060A patent/KR101208721B1/en not_active IP Right Cessation
- 2005-10-07 WO PCT/EP2005/010801 patent/WO2006040080A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1941608A (en) * | 1933-02-02 | 1934-01-02 | Dow Chemical Co | Rolling magnesium alloy |
US2979398A (en) * | 1958-07-03 | 1961-04-11 | Dow Chemical Co | Magnesium-base alloy |
US20040079513A1 (en) * | 2000-10-23 | 2004-04-29 | Hans Pircher | Method for producing a magnesium hot strip |
Non-Patent Citations (2)
Title |
---|
NPL: English translation of DE 101 56 034 A1, 11, 2001 * |
NPL: English translation of JP 2004010959 A, 1, 2004 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103042060A (en) * | 2012-10-15 | 2013-04-17 | 孙逸成 | Production line for preparing magnesium alloy sheets by semi-melt extrusion method and technology of production line |
Also Published As
Publication number | Publication date |
---|---|
WO2006040080A1 (en) | 2006-04-20 |
PL1802405T3 (en) | 2009-01-30 |
DE102004048805B3 (en) | 2006-05-18 |
EP1802405A1 (en) | 2007-07-04 |
ATE397500T1 (en) | 2008-06-15 |
KR20070083937A (en) | 2007-08-24 |
EP1802405B1 (en) | 2008-06-04 |
CN101035634A (en) | 2007-09-12 |
KR101208721B1 (en) | 2012-12-06 |
AU2005293768A1 (en) | 2006-04-20 |
JP2008515640A (en) | 2008-05-15 |
AU2005293768B2 (en) | 2011-10-27 |
DE502005004356D1 (en) | 2008-07-17 |
CA2581780A1 (en) | 2006-04-20 |
JP5046944B2 (en) | 2012-10-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: THYSSENKRUPP STEEL AG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CUONG, NGUYEN DUC;ENGL, BERNHARD;REEL/FRAME:020508/0706;SIGNING DATES FROM 20020704 TO 20070630 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |