EP0767241B1 - Procédé de fabrication d'une boíte métallique du type boíte-boisson - Google Patents
Procédé de fabrication d'une boíte métallique du type boíte-boisson Download PDFInfo
- Publication number
- EP0767241B1 EP0767241B1 EP19960401988 EP96401988A EP0767241B1 EP 0767241 B1 EP0767241 B1 EP 0767241B1 EP 19960401988 EP19960401988 EP 19960401988 EP 96401988 A EP96401988 A EP 96401988A EP 0767241 B1 EP0767241 B1 EP 0767241B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- peripheral skirt
- steel
- manufacturing
- niobium
- 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.)
- Revoked
Links
- 238000000034 method Methods 0.000 title claims description 26
- 229910052751 metal Inorganic materials 0.000 title claims description 22
- 239000002184 metal Substances 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 59
- 239000010959 steel Substances 0.000 claims description 59
- 230000002093 peripheral effect Effects 0.000 claims description 51
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 37
- 238000001953 recrystallisation Methods 0.000 claims description 33
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 32
- 239000010955 niobium Substances 0.000 claims description 32
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
- 229910052758 niobium Inorganic materials 0.000 claims description 31
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 31
- 238000000137 annealing Methods 0.000 claims description 27
- 239000010936 titanium Substances 0.000 claims description 24
- 229910052719 titanium Inorganic materials 0.000 claims description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 16
- 229910052759 nickel Inorganic materials 0.000 claims description 16
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 239000004411 aluminium Substances 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 239000011572 manganese Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 238000005034 decoration Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910052748 manganese Inorganic materials 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 239000011574 phosphorus Substances 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- 238000005098 hot rolling Methods 0.000 claims description 7
- 239000002966 varnish Substances 0.000 claims description 5
- 238000005097 cold rolling Methods 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims 2
- UMUXBDSQTCDPJZ-UHFFFAOYSA-N chromium titanium Chemical compound [Ti].[Cr] UMUXBDSQTCDPJZ-UHFFFAOYSA-N 0.000 claims 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 14
- 239000011651 chromium Substances 0.000 description 8
- 229910052804 chromium Inorganic materials 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 238000010409 ironing Methods 0.000 description 6
- 238000005272 metallurgy Methods 0.000 description 5
- 235000013361 beverage Nutrition 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000611184 Amphora Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0426—Hot rolling
Definitions
- the present invention relates to a method for manufacturing a metal can, of the beverage can type, comprising a bottom and a skirt device, on which is fixed, after filling, a cover, by example with easy opening.
- This type of box usually has a bottom, a skirt peripheral and a neck provided with a rim for carrying out the crimping of a cover, which can be easy to open, and is produced in particular by stamping-ironing from a metal blank cut from a sheet or a band.
- the metal blank is first stamped by shrinking on a press which comprises for example in a conventional manner, on the one hand, a fixed punch and a support forming a peripheral blank holder sliding around said punch on which the metal blank rests and, on the other part, a matrix intended to be applied on the metal blank according to a force transmitted vertically by an upper slide.
- the cup thus obtained comprising a bottom and an edge device formed during the stamping operation is then either calibrated by a slight stamping without the use of a blank holder, or more severely deep drawn with hold-down clamp; then she is subjected to a ironing operation which consists in stretching the edge with a drawing machine device to reduce its thickness and gradually form the skirt device of the box.
- the bottom is formed to give it a geometry determined and the collar of the peripheral skirt is formed after trimming according to two commonly used techniques, a shrinking technique with matrix, or a wheel shrinking technique.
- the box is filled and a cover, for example with easy opening, is fixed, generally by crimping, on the edge of said box.
- the sheet or strip is produced by a process in which a hot strip, obtained by hot rolling a slab or directly cast in the form of a hot strip, for example by casting direct between cylinders, is cold rolled to obtain a strip which is subjected to recrystallization annealing.
- the conditions of hot rolling, cold, and annealing are chosen to give the steel mechanical and rheological properties required for the manufacture of the boxes by stamping-ironing.
- peripheral skirt is not cylindrical but has a certain geometry, for example a rounded shape giving it the general shape of a amphora, or different bosses to contribute to a certain aesthetics of the box, it is necessary to conform the peripheral skirt after the ironing operation.
- This operation of shaping the peripheral skirt can be by expansion, either using a segment tool, or by a technique forming in air or by means of an incompressible fluid.
- the metal is strongly hardened so that the elastic limit in the walls of the peripheral skirt is of the order of 700 to 800 MPa, which gives it very weak capacity for expansion, incompatible with operations of expansion that it should undergo.
- a solution to be able to realize this type of box called box of form consists in carrying out a recrystallization annealing of the blank obtained after the ironing operation.
- This annealing operation allows the metal constituting the skirt device to regain substantially its original characteristics and therefore its fitness.
- This worming phenomenon is due to a deformation heterogeneous metal during expansion, linked to the formation and propagation of bands, called Piobert-Lüders bands.
- a solution to overcome the phenomenon of vermiculure or Piobert-Lüders bands would consist of using a steel without elastic limit bearing, for example a steel of the type without titanium or niobium interstitials in which the element titanium, or niobium as appropriate, trap all of the carbon and nitrogen in solid solution in steel, responsible for aging.
- This type of steels called IF steels contain a content minimum titanium or niobium equal to 0.040%.
- the object of the present invention is to propose a method of manufacture of a shaped metal box for food use, free of vermiculure.
- the method of the invention for making boxes shaped metal for food use, of the beverage can type by example, essentially consists on the one hand of using a particular steel and on the other hand to carry out recrystallization annealing of at least part of the peripheral skirt of a blank before definitively shaping this draft.
- the first step of the process consists in make a cup with a bottom and a peripheral edge by stamping of a steel blank.
- This step is carried out in a conventional manner, generally in two successive operations: first stamping the blank to form a cup and then a calibration of said cup.
- titanium and niobium are important, the sum of the titanium and niobium contents being greater than 0.020%, because these elements make it possible to trap a maximum of nitrogen and carbon present in solid solution in steel in the form of complex precipitates of titanium-niobium carbo-nitrides.
- This steel is produced by a process in which a strip with hot, obtained by hot rolling a slab or directly cast in the form of a hot strip, for example by direct casting between cylinders, is cold rolled to obtain a strip which is subjected to a recrystallization annealing.
- the conditions of hot rolling, cold, and annealing are chosen to give the steel mechanical and rheological properties required for the manufacture of the boxes by stamping-ironing.
- the second step is to stretch the peripheral edge of the cup to form a blank comprising a bottom and a skirt peripheral.
- This operation is also carried out conventionally on a drawing machine.
- the third step is to anneal recrystallization of at least part of the peripheral skirt from the blank to a temperature higher than the recrystallization temperature of the steel, preferably between the recrystallization temperature of the steel and this recrystallization temperature plus 10%.
- an annealing of recrystallization only on the part of the peripheral skirt which it should be distorted in the fourth step.
- the metal was then characterized and the blanks underwent a second annealing at 200 ° C for 20 seconds, corresponding to the type of baking the decoration and / or varnish of the boxes.
- steel A has a plateau yield strength Lp% equal to 9.4 which corresponds to a length of the relatively large yield point and involves the formation of vermiculure when the peripheral skirt of the blank is shaped after recrystallization annealing.
- steel B is a steel without limit bearing elasticity and therefore insensitive to the phenomenon of Piobert-Lüders bands. But, as we can see, the titanium content is equal to 0.044%, well above the maximum authorized for food steels.
- steel D has a yield strength level Lp% equal to 1.7, which is entirely acceptable.
- the worm that develops is not, in this case, unacceptable.
- this steel D has a titanium content equal to 0.014% and a niobium content equal to 0.017%, these two contents being lower than the maximum allowed in food steels.
- one of the characteristics of the invention consists in practicing an additional stage between the third and the fourth stage.
- This stage consists in carrying out the decoration and / or the opening of the box on the blank and subjecting said blank to a treatment of baking the decoration and / or varnish.
- the advantage of decorating and / or varnishing the box on the blank rather than on the finished box lies in the fact that it is more simple to perform these operations on a cylindrical peripheral skirt that on a shaped peripheral skirt, for example expanded and / or exhibiting stiffening bosses.
- Another characteristic of the invention consists in carrying out the recrystallization annealing of at least part of the peripheral skirt of the blank, corresponding to the third step of the process of the invention, to a temperature just above the recrystallization temperature of steel, at a temperature between the recrystallization temperature steel and at most this plus 10%, preferably between the recrystallization temperature of the steel and at most this plus 5%.
- steel D has characteristics mechanical better than C steel, in particular in terms of rate elongation A%, especially after the second annealing.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Coating With Molten Metal (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9511734 | 1995-10-06 | ||
| FR9511734A FR2739581B1 (fr) | 1995-10-06 | 1995-10-06 | Procede de fabrication d'une boite metallique du type boite boisson |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0767241A1 EP0767241A1 (fr) | 1997-04-09 |
| EP0767241B1 true EP0767241B1 (fr) | 2001-03-28 |
Family
ID=9483284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19960401988 Revoked EP0767241B1 (fr) | 1995-10-06 | 1996-09-19 | Procédé de fabrication d'une boíte métallique du type boíte-boisson |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0767241B1 (no) |
| DE (1) | DE69612253T2 (no) |
| ES (1) | ES2156263T3 (no) |
| FR (1) | FR2739581B1 (no) |
| NO (1) | NO311666B1 (no) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7934410B2 (en) | 2006-06-26 | 2011-05-03 | Alcoa Inc. | Expanding die and method of shaping containers |
| MX351082B (es) | 2010-08-20 | 2017-10-02 | Alcoa Inc Star | Recipiente conformado de metal y método para la elaboración del mismo. |
| US9327338B2 (en) | 2012-12-20 | 2016-05-03 | Alcoa Inc. | Knockout for use while necking a metal container, die system for necking a metal container and method of necking a metal container |
| CN105257928A (zh) * | 2015-09-06 | 2016-01-20 | 苏州市宝玛数控设备有限公司 | 一种切割机法兰 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4504326A (en) * | 1982-10-08 | 1985-03-12 | Nippon Steel Corporation | Method for the production of cold rolled steel sheet having super deep drawability |
| JPS61194118A (ja) * | 1985-02-25 | 1986-08-28 | Nippon Steel Corp | イ−ジ−オ−プン蓋用鋼板の製造方法 |
| US5058408A (en) * | 1990-01-30 | 1991-10-22 | Aluminum Company Of America | Method for partially annealing the sidewall of a container |
| KR960007431B1 (ko) * | 1992-04-06 | 1996-05-31 | 가와사끼 세이데쓰 가부시끼가이샤 | 캔용강판 및 그 제조방법 |
| JPH05345924A (ja) * | 1992-05-25 | 1993-12-27 | Nippon Steel Corp | イヤリング性とフランジ加工性に優れた缶用極薄鋼板の製造法 |
| DE69418172T2 (de) * | 1993-07-28 | 1999-12-02 | Nippon Steel Corp., Tokio/Tokyo | Stahlblech mit hoher spannungsrisskorrosionsbeständigkeit für die herstellung von dosen |
| DE9414644U1 (de) * | 1994-09-09 | 1994-11-10 | Ewald Euscher GmbH & Co, 33611 Bielefeld | Vorrichtung zum Tiefziehen von Metallteilen |
-
1995
- 1995-10-06 FR FR9511734A patent/FR2739581B1/fr not_active Expired - Fee Related
-
1996
- 1996-09-19 ES ES96401988T patent/ES2156263T3/es not_active Expired - Lifetime
- 1996-09-19 DE DE1996612253 patent/DE69612253T2/de not_active Revoked
- 1996-09-19 EP EP19960401988 patent/EP0767241B1/fr not_active Revoked
- 1996-10-04 NO NO19964235A patent/NO311666B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO311666B1 (no) | 2002-01-02 |
| NO964235L (no) | 1997-04-07 |
| DE69612253D1 (de) | 2001-05-03 |
| DE69612253T2 (de) | 2001-10-18 |
| NO964235D0 (no) | 1996-10-04 |
| FR2739581B1 (fr) | 1997-10-31 |
| EP0767241A1 (fr) | 1997-04-09 |
| ES2156263T3 (es) | 2001-06-16 |
| FR2739581A1 (fr) | 1997-04-11 |
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