DE497393C - Arrangement of the support rollers in rolling mills with four or six rollers - Google Patents
Arrangement of the support rollers in rolling mills with four or six rollersInfo
- Publication number
- DE497393C DE497393C DER71065D DER0071065D DE497393C DE 497393 C DE497393 C DE 497393C DE R71065 D DER71065 D DE R71065D DE R0071065 D DER0071065 D DE R0071065D DE 497393 C DE497393 C DE 497393C
- Authority
- DE
- Germany
- Prior art keywords
- rollers
- arrangement
- rolling
- rolling mills
- rolls
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
- B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Description
Anordnung der Stützwalzen bei Walzwerken mit vier oder sechs Walzen Walzwerke mit ungleichem Walzendurchmesser sind als solche mit drei, vier und sechs Walzen bekannt. Die dünnen Walzen bewirken bei gleichem oder etwas geringerem Walzdruck eine erheblich größere Stäxkenabnahme des Walzgutes, müssen aber wegen ihres kleineren Durchmessers durch Stützwalzen vor einer Durchbiegung geschützt werden.Arrangement of the backup rolls in rolling mills with four or six rolls Rolling mills with unequal roll diameters are as those with three, four and six Rolling known. The thin rollers produce the same or slightly less roller pressure a considerably larger decrease in the thickness of the rolling stock, but must because of their smaller Diameter can be protected from sagging by back-up rollers.
Die großen Walzdrücke erfordern eine iin Betrieb möglichst gleiche Verteilung auf die Stützwalzen und deren Zapfen. Im Gegensatz zu den bekannten Anordnungen, hei denen die Stützwalzen symmetrisch zu der lotrechten und waagerechten Ebene des Walzwerks liegen (Abb. i und 2) und daher ungleiche Walzdrücke erhalten, .erfordert die gleichmäßige Verteilung der Drücke auf die Stützwalzen eine unsymmetrische Anordnung. Diese wird dadurch erreicht, daß die Ebene, die den Winkel zwischen 'den durch idie Achsen der Stützwalzen und die Achse der Druckwalze gelegten Ebenen halbiert, nach der Austrittsseite des Walzgutes hin derart geneigt ist, daß sie in die Richtung der Resultierenden aus dem Walzdrucke und der Walzkraft fällt. Die Stützwalze auf der Austrittsseite des Walzgutes liegt :dann schon bei neuen Walzen tiefer als die Stützwalze auf der Eintrittsseite. Die Abb. i und 2 zeigen die bekannten Walzenanordnungen an einem Vier- und Sechswulzenwalzwerk, die Abb.3 und q. dagegen die neue Walzenani; ordnung an diesen M'almverken. In allen Figuren bedeutet w den ZValz'-druck, z die Walzkraft, t- die Resultierende von tv und z, a1 und d2 die Drücke auf die. Stützwalzen, i die Unterwalze, 2 und 2' die Stützwalzen und 3 die kleinen Druckwalzen.The high rolling pressures require a distribution as evenly as possible over the back-up rolls and their journals during operation. In contrast to the known arrangements, in which the back-up rolls are symmetrical to the vertical and horizontal plane of the rolling mill (Figs. 1 and 2) and therefore receive unequal rolling pressures, the even distribution of the pressures on the back-up rolls requires an asymmetrical arrangement. This is achieved in that the plane which bisects the angle between the planes laid by the axes of the support rolls and the axis of the pressure roll is inclined towards the exit side of the rolling stock in such a way that it faces in the direction of the resultant of the rolling pressure and the rolling force falls. The back-up roll on the exit side of the rolling stock lies: then, even with new rolls, it is lower than the back-up roll on the entry side. Figs. I and 2 show the known roll arrangements on a four- and six-roll mill, Figs.3 and q. on the other hand the new Walzenani; order to these M'almverken. In all figures, w denotes the ZValz 'pressure, z the rolling force, t- the resultant of tv and z, a1 and d2 the pressures on the. Back-up rolls, i the bottom roll, 2 and 2 'the back-up rolls and 3 the small pressure rolls.
Der in Abb. i gezeichnete Kraftplan -zeigt, daß a1 und ac" verschieden groß sind; Abb.3 dagegen zeigt, daß bei der neuen 'Anordnung (11=a2 ist.The force diagram drawn in Fig. I shows that a1 and ac "are different are tall; Figure 3, on the other hand, shows that in the new 'arrangement (11 = a2.
Je größer der Winkel a zwischen den Ebenen durch die Walzenmittelpunkte (Abb.5) ist, desto größer ist die Ungleichheit der Walzendrücke und die Gefahr des Klemmens. Da nun bei der neuen Anordnung der Winkel kleiner ist als bei der alten Anordnung (man vergleiche die Abb. i mit Abb.3), so muß die Gefahr des Klemmens klein, d. h. verhindert sein. In Abb. q. ist die Lagerung sinngemäß der Abb.3.The greater the angle a between the planes through the roll centers (Fig.5), the greater the inequality of the roller pressures and the risk of the Clamping. Since the angle is now smaller with the new arrangement than with the old one Arrangement (compare Fig. I with Fig.3), there must be a risk of jamming small, d. H. be prevented. In Fig.q. the storage is analogous to Figure 3.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER71065D DE497393C (en) | Arrangement of the support rollers in rolling mills with four or six rollers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DER71065D DE497393C (en) | Arrangement of the support rollers in rolling mills with four or six rollers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE497393C true DE497393C (en) | 1930-05-07 |
Family
ID=7414064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DER71065D Expired DE497393C (en) | Arrangement of the support rollers in rolling mills with four or six rollers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE497393C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1106484B (en) * | 1953-10-05 | 1961-05-10 | Troester Maschf Paul | Machine for kneading, mixing, preheating or calendering of organic plastic masses |
-
0
- DE DER71065D patent/DE497393C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1106484B (en) * | 1953-10-05 | 1961-05-10 | Troester Maschf Paul | Machine for kneading, mixing, preheating or calendering of organic plastic masses |
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