BE341908A - - Google Patents
Info
- Publication number
- BE341908A BE341908A BE341908DA BE341908A BE 341908 A BE341908 A BE 341908A BE 341908D A BE341908D A BE 341908DA BE 341908 A BE341908 A BE 341908A
- Authority
- BE
- Belgium
- Prior art keywords
- sheets
- sheet
- thin
- rolling
- cold
- Prior art date
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005097 cold rolling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soft Magnetic Materials (AREA)
Description
<Desc/Clms Page number 1>
, Procédé de laminage à froid de tôles minces .
EMI1.1
-- 5 En règle générale,les tôles de fer sont laminées à chaud De plue, on forme des paquets en empilant les tôles,pour laminer plusieurs tôles à la fois. Par suite de l'échauffement,les sur- faces de tôles deviennent si molles qu'elles adhèrent facil ement, l'une à l'autre et ne glissent pas l'une sur l'autre pendant le laminage. Comme sécurité supplémentaire contre le glissement,on a aussi proposé de souder les paquets de tôle le long de leurs Dards L'épaisseur minimum à laquelle les tôles peuvent être laminées à chaud est limitée,car des tôles trop minces sont facilement brûlées ; elle est de 0,2 mm.
Récemment on a aussi laminé à froid les tôles de fer. Mais on ne peut laminer qu'une tôle à la fois,car si on lamine plusieurs tôles en même temps,ces tôles glissent l'une sur l'autre,se plissent,se déchirent et se soulèvent l'une de l'autre, à la sortie des cylindres. par ce procédé,on ne peut pas non plus obtenir des tôles très minces, car les cylindres fléchissent quelque peu dans leur partie médiane,et par suite ne peuvent être placés suffisamment près .l'un de l'autre. La plus petite épaisseur le tôles atteinte est de 0,6 mm.
<Desc/Clms Page number 2>
L'invention rend possible la fabrication de tales très minces jusqu'à 0,05 mm. qui jusqu'ici ne pouvaient être obtenues pratique ment ai par laminage à froid,ni par laminage à chaud,et ce grâce au fait que les paquets formés de tôles froides sont soudés le long de leurs bords longitudinaux ,de telle sorte que les tôles sont maintenues sur toute le@r longueur et ne peuvent s'allonger réellement que dans une direction longitudinale. De plus,il ne se produit ni glissement des tôles,ni plissement de sorte que les déchets sont très minimes et se limitent aux bords longitudinaux soudés qui doivent être coupés.
En outre,le paquet peut être laminé sur un train trio, c'est à dire peut être enfoncé en avant et en arrière; on supprime ainsi le retour peu pratique à l'avant du laminoir et on épargne du temps et du travail.
<Desc / Clms Page number 1>
, Cold rolling process for thin sheets.
EMI1.1
As a rule, iron sheets are hot rolled. Further, bundles are formed by stacking the sheets, to roll several sheets at a time. As a result of heating, the sheet surfaces become so soft that they readily adhere to each other and do not slide over each other during rolling. As an additional safety against slipping, it has also been proposed to weld the bundles of sheet along their Darts. The minimum thickness to which the sheets can be hot-rolled is limited, because sheets that are too thin are easily burned; it is 0.2 mm.
Recently iron sheets have also been cold rolled. But you can only laminate one sheet at a time, because if you roll several sheets at the same time, these sheets slide over each other, crease, tear and lift off each other, at the exit of the cylinders. by this process, it is also not possible to obtain very thin sheets, because the rolls flex somewhat in their middle part, and therefore cannot be placed sufficiently close to each other. The smallest sheet thickness reached is 0.6 mm.
<Desc / Clms Page number 2>
The invention makes it possible to manufacture very thin tales down to 0.05 mm. which hitherto could not be obtained practically by cold rolling or by hot rolling, thanks to the fact that the packages formed of cold sheets are welded along their longitudinal edges, so that the sheets are maintained along the entire length and can only actually elongate in a longitudinal direction. In addition, neither sheet slippage nor wrinkling occurs so that the waste is very minimal and is limited to the welded longitudinal edges which have to be cut.
In addition, the package can be laminated on a trio train, ie can be pressed forward and backward; this eliminates the inconvenient return to the front of the rolling mill and saves time and labor.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE341908A true BE341908A (en) |
Family
ID=18466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE341908D BE341908A (en) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE341908A (en) |
-
0
- BE BE341908D patent/BE341908A/fr unknown
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