FR2628348A1 - METHOD FOR INCREASING THE FRICTION BETWEEN THE TOOL AND THE PRODUCT TO BE ROLLED, AND APPROPRIATE CYLINDER FOR CARRYING OUT SAID METHOD - Google Patents
METHOD FOR INCREASING THE FRICTION BETWEEN THE TOOL AND THE PRODUCT TO BE ROLLED, AND APPROPRIATE CYLINDER FOR CARRYING OUT SAID METHOD Download PDFInfo
- Publication number
- FR2628348A1 FR2628348A1 FR8903285A FR8903285A FR2628348A1 FR 2628348 A1 FR2628348 A1 FR 2628348A1 FR 8903285 A FR8903285 A FR 8903285A FR 8903285 A FR8903285 A FR 8903285A FR 2628348 A1 FR2628348 A1 FR 2628348A1
- Authority
- FR
- France
- Prior art keywords
- grooves
- rolled
- friction
- product
- cylinder
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/34—Milling grooves of other forms, e.g. circumferential
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/20—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a non-continuous process,(e.g. skew rolling, i.e. planetary cross rolling)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Metal Rolling (AREA)
- Friction Gearing (AREA)
Abstract
L'invention concerne un procédé pour accroître le frottement entre l'outil et le produit à laminer, et un cylindre approprié pour la mise en oeuvre de ce procédé. Selon ce procédé, on aménage, dans la zone de réduction 1 de cylindres de laminage, des gorges 4, dont la profondeur est comprise entre 0,05 et 5 mm. Application notamment au laminage réalisé dans des laminoirs planétaires.The invention relates to a method for increasing the friction between the tool and the product to be rolled, and to a cylinder suitable for carrying out this method. According to this method, grooves 4, the depth of which is between 0.05 and 5 mm, are arranged in the reduction zone 1 of the rolling rolls. Application in particular to rolling carried out in planetary rolling mills.
Description
La présente invention concerne un procédé pour accroître le frottementThe present invention relates to a method for increasing friction
entre les cylindres et le produit à laminer dans un laminoir planétaire. Ceci permet d'empêcher le glissement des cylindres et d'obtenir, simultanément, une surface extérieure plus lisse qu'auparavant, pour le produit traité. Afin d'accroître le frottement, on between the rolls and the product to be rolled in a planetary mill. This makes it possible to prevent the rolls from sliding and to obtain, at the same time, a smoother outer surface than before, for the treated product. In order to increase friction,
refaçonne les surfaces des cylindres dans certaines zones. reshapes roll surfaces in certain areas.
L'invention concerne également un cylindre fabriqué de The invention also relates to a cylinder made of
cette manière.this way.
Lors du laminage de tubes et de barres dans un laminoir planétaire, trois cylindres coniques sont disposés en étant équidistants angulairement de 120 . Les cylindres tournent autour de leurs axes propres et également autour du point central de l'engrenage planétaire. Le degré de réduction obtenu au cours d'un seul laminage est important et même supérieur à 90 %. L'abréviation utilisée en général pour un laminage planétaire est PSW (de l'allemand Planetenschràgwalzwerk, à savoir laminoir planétaire à cylindres obliques), dispositif pour lequel plusieurs When rolling tubes and bars in a planetary mill, three conical cylinders are arranged angularly equidistant from 120. The cylinders rotate around their own axes and also around the center point of the planetary gear. The degree of reduction obtained during a single rolling is large and even greater than 90%. The abbreviation generally used for planetary rolling is PSW (from the German Planetenschràgwalzwerk, namely planetary rolling mill with oblique cylinders), a device for which several
brevets ont été déposés.patents have been filed.
En particulier lors du laminage du cuivre et d'alliages de cuivre, il était usuel jusqu'alors d'utiliser une surface particulière, qui était rendue rugueuse au moyen d'une projection de fils d'acier, au niveau de la section initiale de la zone de réduction du cylindre. Ceci était nécessaire pour créer le frottement requis entre les cylindres, et le laminage de billettes avec des cylindres plus lisses conduit à un glissement, de sorte que la vitesse d'éjection du produit laminé est faible et que les billettes sont soumises à des secousses et à des àcoups pendant le laminage. Dans ce cas, la surface extérieure du Particularly in the rolling of copper and copper alloys, it has been customary to use a particular surface, which has been roughened by means of a steel wire projection, at the initial section of the steel. the reduction zone of the cylinder. This was necessary to create the required friction between the rolls, and the rolling of billets with smoother rolls leads to slippage, so that the ejection speed of the rolled product is low and the billets are shaken and during the rolling. In this case, the outer surface of the
tube était également irrégulière. tube was also irregular.
Le fait de rendre rugueux les cylindres s'est avéré être nuisible pour la qualité de la surface extérieure du tube, étant donné que la zone de rugosité crée, au niveau de la surface extérieure, de petites fissures, qui ne sont pas fixées lors de l'étape finale du laminage. Ceci se manifeste sous la forme d'une fissuration ou de microfissures sur la surface extérieure du tube laminé. Les fissures superficielles sont nuisibles, étant donné qu'elles ne peuvent pas être éliminées au cours des Roughening the rolls has proven to be detrimental to the quality of the outer surface of the tube, since the roughness zone creates small cracks at the outer surface which are not fixed during the final stage of rolling. This is manifested as cracking or microcracks on the outer surface of the rolled tube. Superficial cracks are harmful because they can not be eliminated during
tirages successifs du produit laminé. successive prints of the rolled product.
Conformément à la présente invention, on accroît le frottement entre les cylindres et le produit devant être laminé, en remplaçant la surface rugueuse antérieure des cylindres, par des gorges ménagées dans ces derniers et, à l'examen, on s'est aperçu de façon surprenante que, contrairement aux notions générales des spécialistes de la technique, ces gorges n'entraînent aucun défaut dans les produits et que, au contraire, la qualité de la surface des In accordance with the present invention, the friction between the rolls and the product to be rolled is increased by replacing the rough anterior surface of the rolls with grooves in the rolls and, on examination, it has been found surprising that, contrary to the general notions of those skilled in the art, these grooves do not cause defects in the products and that, on the contrary, the quality of the surface of the
produits est maintenue à un bon niveau. products is maintained at a good level.
Conformément à la présente invention, des gorges sont ménagées dans la zone de réduction des cylindres d'un laminoir planétaire. Ces gorges sont formées avantageusement soit au tour, soit par abrasion. Le nombre In accordance with the present invention, grooves are provided in the roll reduction zone of a planetary mill. These grooves are advantageously formed either by turn or by abrasion. The number
des gorges ménagées dans la zone de réduction est compris. grooves in the reduction zone are included.
entre 1 et 20. La profondeur de ces gorges est comprise entre 0,05 et 5 mm et, avantageusement, entre 0,1 et 0,5 mm, tandis que leur largeur est comprise entre 1 et 10 mm between 1 and 20. The depth of these grooves is between 0.05 and 5 mm and advantageously between 0.1 and 0.5 mm, while their width is between 1 and 10 mm.
et que leurs bords sont arrondis.and that their edges are rounded.
D'autres caractéristiques et avantages de la pré- Other features and advantages of the pre-
sente invention ressortiront de la description donnée ci- invention will emerge from the description given below.
après prise en référence à la figure unique, qui illustre schématiquement un cylindre 'conforme à la présente after making reference to the single figure, which schematically illustrates a cylinder 'in accordance with the present
invention.invention.
Comme cela ressort- de la figure, le cylindre comporte, en principe, trois zones. La zone, que rencontre tout d'abord la billette devant être laminée, est la zone de réduction 1. La zone suivante, c'est-à-dire la zone de lissage 2, détermine l'épaisseur de la paroi de la billette en forme de tube ou d'une autre billette de ce type. La dernière zone est la zone de formage 3, dans laquelle le tube est refaçonné de manière à être cylindrique. Comme cela est visible sur la figure, les gorges 4 sont situées dans la zone de réduction 1 des cylindres. Lors des essais effectués, il s'est avéré qu'on obtient, au moyen des gorges ménagées de cette façon, un frottement suffisant, qui empêche l'apparition de secousses et d'à-coups de la billette pendant le laminage. Les essais ont également révélé que, en cours d'utilisation, les gorges ne s'usent As can be seen from the figure, the cylinder comprises, in principle, three zones. The zone, which first meets the billet to be laminated, is the reduction zone 1. The next zone, that is to say the smoothing zone 2, determines the thickness of the wall of the billet. tube shape or another billet of this type. The last zone is the forming zone 3, in which the tube is reshaped so as to be cylindrical. As can be seen in the figure, the grooves 4 are located in the reduction zone 1 of the cylinders. In the tests carried out, it has been found that, by means of the grooves formed in this way, a sufficient friction is obtained, which prevents the occurrence of jolts and jolts of the billet during the rolling. The tests also revealed that, in use, the grooves do not wear out
pas aussi rapidement qu'une zone rugueuse. not as quickly as a rough area.
La pratique a révélé que, lorsqu'on utilise des cylindres rugueux, des microfissures sont créées sur la surface de la pièce à laminer, la profondeur de ces fissures étant comprise entre 0,05 et 0,1 mm. Sur la base des expériences réalisées, il s'est avéré que, lorsqu'on travaille avec des cylindres pourvus de gorges et polis, ces microfissures nuisibles ne sont pas créées dans la Practice has shown that when rough rolls are used, microcracks are created on the surface of the workpiece, the depth of these cracks being between 0.05 and 0.1 mm. On the basis of the experiments carried out, it has been found that when working with cylinders provided with grooves and polished, these harmful micro-cracks are not created in the
surface du tube.tube surface.
Claims (14)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI881193A FI881193A (en) | 1988-03-14 | 1988-03-14 | SAETT ATT OEKA FRIKTIONEN MELLAN VERKTYGET OCH PRODUKTEN SOM VALSSAR SAMT FOER AENDAMAOLET LAEMPLIG VALS. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2628348A1 true FR2628348A1 (en) | 1989-09-15 |
Family
ID=8526078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8903285A Pending FR2628348A1 (en) | 1988-03-14 | 1989-03-14 | METHOD FOR INCREASING THE FRICTION BETWEEN THE TOOL AND THE PRODUCT TO BE ROLLED, AND APPROPRIATE CYLINDER FOR CARRYING OUT SAID METHOD |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPH01273605A (en) |
| KR (1) | KR890014196A (en) |
| CN (1) | CN1037852A (en) |
| AU (1) | AU3130189A (en) |
| DD (1) | DD284617A5 (en) |
| DE (1) | DE3908147A1 (en) |
| FI (1) | FI881193A (en) |
| FR (1) | FR2628348A1 (en) |
| GB (1) | GB2216448A (en) |
| MX (1) | MX171007B (en) |
| NL (1) | NL8900597A (en) |
| PL (1) | PL278187A1 (en) |
| SE (1) | SE8900796L (en) |
| YU (1) | YU51389A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01314324A (en) * | 1988-06-14 | 1989-12-19 | Sony Corp | Touch panel device |
| DE10030823C2 (en) * | 2000-06-23 | 2003-08-07 | Gmt Ges Fuer Metallurg Technol | 3-roll cross-rolling mill |
| CN102151699A (en) * | 2010-12-09 | 2011-08-17 | 西南铝业（集团）有限责任公司 | Aluminum alloy strip material rolling method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU341546A1 (en) * | Д. М. Ломсадзе, Д. М. Харадзе, П. А. Церетели, А. Е. Убири | FELT BREAK WAFFER | ||
| US2017386A (en) * | 1933-09-21 | 1935-10-15 | Bannister Bryant | Apparatus for forming tubular blanks |
| GB576199A (en) * | 1944-04-25 | 1946-03-22 | Clarence Lennon Dewey | Tube reducing method and mechanism |
| DE2854510A1 (en) * | 1978-12-16 | 1980-06-26 | Kabel Metallwerke Ghh | Rolling down bars by means of conical rollers - which have circumferential longitudinal ridges to prevent slip |
| SU761041A1 (en) * | 1978-07-18 | 1980-09-07 | Dn Metall Inst | Method of screw expanding of tubes |
| SU778833A2 (en) * | 1978-11-10 | 1980-11-20 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Skew-roll mill technological tool |
| FR2551995A1 (en) * | 1983-09-21 | 1985-03-22 | Eschweiler Bergwerksverein | Planetary rolling mill with slant (skew) rolls |
-
1988
- 1988-03-14 FI FI881193A patent/FI881193A/en not_active Application Discontinuation
-
1989
- 1989-03-07 SE SE8900796A patent/SE8900796L/en not_active Application Discontinuation
- 1989-03-07 GB GB8905145A patent/GB2216448A/en not_active Withdrawn
- 1989-03-13 YU YU00513/89A patent/YU51389A/en unknown
- 1989-03-13 NL NL8900597A patent/NL8900597A/en not_active Application Discontinuation
- 1989-03-13 PL PL27818789A patent/PL278187A1/en unknown
- 1989-03-13 DE DE3908147A patent/DE3908147A1/en not_active Withdrawn
- 1989-03-14 FR FR8903285A patent/FR2628348A1/en active Pending
- 1989-03-14 CN CN89102588A patent/CN1037852A/en active Pending
- 1989-03-14 JP JP1059882A patent/JPH01273605A/en active Pending
- 1989-03-14 DD DD89326584A patent/DD284617A5/en not_active IP Right Cessation
- 1989-03-14 KR KR1019890003144A patent/KR890014196A/en not_active Application Discontinuation
- 1989-03-14 AU AU31301/89A patent/AU3130189A/en not_active Abandoned
- 1989-03-14 MX MX015268A patent/MX171007B/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU341546A1 (en) * | Д. М. Ломсадзе, Д. М. Харадзе, П. А. Церетели, А. Е. Убири | FELT BREAK WAFFER | ||
| US2017386A (en) * | 1933-09-21 | 1935-10-15 | Bannister Bryant | Apparatus for forming tubular blanks |
| GB576199A (en) * | 1944-04-25 | 1946-03-22 | Clarence Lennon Dewey | Tube reducing method and mechanism |
| SU761041A1 (en) * | 1978-07-18 | 1980-09-07 | Dn Metall Inst | Method of screw expanding of tubes |
| SU778833A2 (en) * | 1978-11-10 | 1980-11-20 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Skew-roll mill technological tool |
| DE2854510A1 (en) * | 1978-12-16 | 1980-06-26 | Kabel Metallwerke Ghh | Rolling down bars by means of conical rollers - which have circumferential longitudinal ridges to prevent slip |
| FR2551995A1 (en) * | 1983-09-21 | 1985-03-22 | Eschweiler Bergwerksverein | Planetary rolling mill with slant (skew) rolls |
Non-Patent Citations (3)
| Title |
|---|
| SOVIET INVENTIONS ILLUSTRATED, semaine 7305, sections general/mechanical, accession no. 73-05913U[05], Derwent Publications Ltd, Londres, GB; & SU-A-341 546 (RUSTAVSK METALLURGICAL PL) 30-06-1972 * |
| SOVIET INVENTIONS ILLUSTRATED, semaine 8130, sections general/mechanical, accession no. 81-54638D[30], Derwent Publications Ltd, Londres, GB; & SU-A-778 833 (MOSCOW STEEL ALLOYS INST.) 20-11-1980 * |
| SOVIET INVENTIONS ILLUSTRATED, semaine D20, 24 juin 1981, sections general/mechanical, accession no. 35845D/20, Derwent Publications Ltd, Londres, GB; & SU-A-761 041 (DNEPR METALLURG. INS.) 07-09-1980 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3130189A (en) | 1989-09-14 |
| KR890014196A (en) | 1989-10-23 |
| YU51389A (en) | 1991-04-30 |
| DE3908147A1 (en) | 1989-09-28 |
| SE8900796D0 (en) | 1989-03-07 |
| NL8900597A (en) | 1989-10-02 |
| SE8900796L (en) | 1989-09-15 |
| PL278187A1 (en) | 1989-10-16 |
| MX171007B (en) | 1993-09-24 |
| GB2216448A (en) | 1989-10-11 |
| FI881193A (en) | 1989-09-15 |
| CN1037852A (en) | 1989-12-13 |
| FI881193A0 (en) | 1988-03-14 |
| JPH01273605A (en) | 1989-11-01 |
| GB8905145D0 (en) | 1989-04-19 |
| DD284617A5 (en) | 1990-11-21 |
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