AT43698B - Cross rolling mill for the production of tubes from hollow blocks. - Google Patents

Cross rolling mill for the production of tubes from hollow blocks.

Info

Publication number
AT43698B
AT43698B AT43698DA AT43698B AT 43698 B AT43698 B AT 43698B AT 43698D A AT43698D A AT 43698DA AT 43698 B AT43698 B AT 43698B
Authority
AT
Austria
Prior art keywords
tubes
production
rolling mill
hollow blocks
cross rolling
Prior art date
Application number
Other languages
German (de)
Original Assignee
Verwertung Von Rohrwalz Patent
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Verwertung Von Rohrwalz Patent filed Critical Verwertung Von Rohrwalz Patent
Application granted granted Critical
Publication of AT43698B publication Critical patent/AT43698B/en

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Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 
 EMI1.3 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 Fortstrecken der Wellen c weiter in das Material des Blockes ein, ihrerseits Vertiefungen und Wellenrücken wie die ersteren entstehen lassend. Diese werden nach einer weiteren halben Drehung des Blockes wieder von den Wulsten der ersten Walze fortgestreckt usf. Jede halbe Blockumdrehung, d. i. jedes neue Zusammentreffen einer Blockumfangstelle mit einer Walze zeigt denselben Vorgang wie das Ausstrecken unter Hammerfinnen, wobei das Versetzen der Wulste und das Verschieben des Blockes in Achsrichtung dem Versetzen des Hammerschlages gleichkommt. 



   Der Block wird also durch   wellenförmiges,   gleichmässiges, sowohl innen als aussen gleichzeitig stattfindendes Fortbewegen des Materials in ununterbrochenem   kontinuierlichen Ptozess   nach und nach. in Achsrichtung ausgestreckt. Das Vorwärtsfliessen des Materials ist naturgemäss an der die Walzen verlassenden Stelle des Blockes ungleich grösser als am entgegengesetzten Ende, weil gleich grosse Materialmengen durch ungleich grosse Querschnitte treten. 



   Die verschiedene Grösse und Form der einzelnen Wulste, wodurch sie in ganzer Dimension der Wandstärke einwirken, ermöglicht, dass das   Material gleichmässig,   innen und aussen zugleich in   Längsachsenrichtlmg   ausgestreckt, also nur im Querschnitt verkleinert wird, ohne dass ein   gegenseitiges Längsverschieben   oder   Quer versehieben   benachbarter Fasern stattfindet. 



   Es ergibt sich   somit : Der Hohlblock   wird lediglich durch ruhigen, gleichmässigen Druck aussen und innen zugleich, ohne Faserverdrehung, Knicken oder Reissen einzig in Längsachsenrichtung ausgestreckt. Hierdurch ist die Möglichkeit gegeben, aus einem noch nicht, oder nur wenig   erachteten   Rohmaterial ein Fertigprodukt herzustellen. 



   Der Dorn, der in seiner Dicke etwas kleiner gehalten ist, als der Lochdurchmesser des Blockes, 
 EMI2.2 
 entfernt werden kann.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 
 EMI1.3
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 Extending the waves c further into the material of the block, in turn creating depressions and wave ridges like the former. After another half turn of the block, these are stretched away again by the beads of the first roller, and so on. i. Each new meeting of a block circumference point with a roller shows the same process as the stretching under hammer fins, whereby the displacement of the bulges and the displacement of the block in the axial direction equals the displacement of the hammer blow.



   The block is thus gradually formed by undulating, even movement of the material, both inside and outside, in an uninterrupted, continuous process. stretched out in the axial direction. The forward flow of the material is naturally much greater at the point of the block leaving the rollers than at the opposite end, because equally large amounts of material pass through unequal cross sections.



   The different size and shape of the individual beads, which act in the whole dimension of the wall thickness, enables the material to be stretched evenly, inside and outside at the same time in the longitudinal axis direction, i.e. only reduced in cross-section, without mutual longitudinal displacement or transverse displacement of adjacent fibers takes place.



   The result is: The hollow block is simply stretched out in the direction of the longitudinal axis by calm, even pressure on the outside and inside at the same time, without fiber twisting, kinking or tearing. This makes it possible to manufacture a finished product from a raw material that has not yet been or has only been considered little.



   The mandrel, which is kept slightly smaller in its thickness than the hole diameter of the block,
 EMI2.2
 can be removed.

 

Claims (1)

PATENT ANSPRUCH : Querwalzwerk zur Herstellung von Rohren aus Hohlblöcken in einem Durchgang mit Hilfe EMI2.3 liegenden Wulstringen versehen sind, deren Wölbungsradius und Angriffsbreite an jeder Stelle in gleichem Verhältnis zum Blockdurchmesser und der Wandstärke stehen und die so auf den Walzen versetzt sind, dass jeweils der Wulst der einen Walze genau zwischen zwei Wulsten der Gegenwalze liegt, um so das Material dem Dorn nach und nach ohne Faserverdrehung radial zuzudrängen und in Blockachsenrichtung unter Beibehaltung des anfänglichen Lochdurchmessers auszustrecken. PATENT CLAIM: Cross rolling mill for the production of tubes from hollow blocks in one pass with the aid EMI2.3 lying bead rings are provided, the radius of curvature and attack width are at every point in the same ratio to the block diameter and the wall thickness and which are offset on the rollers that the bead of one roller lies exactly between two beads of the counter roller, so that the material Gradually push the mandrel radially closed without twisting the fiber and extend it in the direction of the block axis while maintaining the initial hole diameter.
AT43698D 1907-02-20 1907-02-20 Cross rolling mill for the production of tubes from hollow blocks. AT43698B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT43698T 1907-02-20

Publications (1)

Publication Number Publication Date
AT43698B true AT43698B (en) 1910-08-25

Family

ID=3563089

Family Applications (1)

Application Number Title Priority Date Filing Date
AT43698D AT43698B (en) 1907-02-20 1907-02-20 Cross rolling mill for the production of tubes from hollow blocks.

Country Status (1)

Country Link
AT (1) AT43698B (en)

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