AT156149B - Tubular partition for the production of composite castings, in particular chilled cast iron rolls. - Google Patents

Tubular partition for the production of composite castings, in particular chilled cast iron rolls.

Info

Publication number
AT156149B
AT156149B AT156149DA AT156149B AT 156149 B AT156149 B AT 156149B AT 156149D A AT156149D A AT 156149DA AT 156149 B AT156149 B AT 156149B
Authority
AT
Austria
Prior art keywords
production
tubular partition
cast iron
chilled cast
composite castings
Prior art date
Application number
Other languages
German (de)
Original Assignee
Weinberger Eisenwerk
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 Weinberger Eisenwerk filed Critical Weinberger Eisenwerk
Application granted granted Critical
Publication of AT156149B publication Critical patent/AT156149B/en

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  • Rolls And Other Rotary Bodies (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Robrförmige Trennwand zum Herstellen von   Verbundgussstiicken,   insbesondere   Hartgusswalzen.   



   Die Herstellung von Verbundgussstücken mit Kern und Mantel verschiedener Werkstoffsorten durch gleichzeitiges Vergiessen dieser unter Zuhilfenahme eines verzinnten oder mit Sandstrahl abgeblasenen Eisenblechrohres als Trennwand ist bekannt. Hiebei ist das   Gussstück   aber nur dann als geglückt zu bezeichnen, wenn die Trennwand sich nicht nur in ihrer ganzen Oberfläche mit dem Werkstoffe des Mantels und des Kernes vollkommen   verschweisst,   sondern ihre ursprüngliche Form auch nach dem Giessvorgange aufweist, die Trennwand also weder durch die mechanischen noch die thermischen Beanspruchungen verschoben oder verdrückt wurde. Nur bei unveränderter Gestalt der Trennwand im Endprodukt wird dieses auch frei von Spannungen sein.

   Ein Verschweissen erfolgt um so besser, je kleiner die Wandstärke der Trennwand ist, den mechanischen und thermischen Be-   anspruchungenhält dagegen eine stärkere Wand eher stand. Es wurde deshalb auch schon vorgeschlagen,   ein dünnes Trennblech durch Längsrippen zu versteifen. Diese hemmen aber das aus andern Gründen notwendige, durch tangentiale Anordnung der Eingüsse bewirkte Aufsteigen des flüssigen Werkstoffes in einer Schraubenlinie. 
 EMI1.1 




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  Robe-shaped partition for the production of composite castings, in particular chilled cast rolls.



   The production of composite castings with core and jacket of different types of material by simultaneous casting of these with the aid of a tin-plated or sandblasted iron sheet pipe as a partition is known. The casting can only be described as successful if the partition wall is not only completely welded to the materials of the shell and the core in its entire surface, but also has its original shape after the casting process, i.e. the partition wall neither due to the mechanical the thermal loads were still shifted or suppressed. Only if the shape of the partition wall in the end product remains unchanged, it will also be free from tension.

   The smaller the wall thickness of the partition wall, the better the welding, whereas a thicker wall is more likely to withstand the mechanical and thermal loads. It has therefore already been proposed to stiffen a thin partition by means of longitudinal ribs. However, these inhibit the ascent of the liquid material in a helix, which is necessary for other reasons and caused by the tangential arrangement of the sprues.
 EMI1.1

Claims (1)

PATENT-ANSPRÜCHE : 1. Rohrförmige Trennwand zum Herstellen von Verbundgussstücken, insbesondere Hartgusswalzen, dadurch gekennzeichnet, dass auf ihrer äusseren oder inneren Mantelfläche Rippen (2, 3, 4) in ein-oder mehrgängigen Sehraubenlinien befestigt, vorzugsweise aufgeschweisst sind. PATENT CLAIMS: 1. Tubular partition for the production of composite castings, in particular chilled cast iron rollers, characterized in that ribs (2, 3, 4) are attached, preferably welded, to their outer or inner lateral surface in single or multi-thread vault lines. 2. Rohrförmige Trennwand nach Anspruch 1, dadurch gekennzeichnet, dass die schraubenlinienförmigen Rippen (2, 3, 4) im Bereiche der herzustellenden Arbeitsfläche der Walze an der inneren, im Bereiche der herzustellenden Walzenzapfen auf der äusseren Mantelfläche der Trennwand (1) angeordnet sind. 2. Tubular partition according to claim 1, characterized in that the helical ribs (2, 3, 4) are arranged in the area of the working surface of the roller to be produced on the inner, in the area of the roll journal to be produced on the outer surface of the partition (1). 3. Rohrförmige Trennwand nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass an ihrem unteren Ende ein Flansch (5) angeordnet ist, der zum Guss durch im Formkasten (6) verankerte Haltestangen (7) niedergehalten werden kann. EMI2.1 3. Tubular partition according to claim 1 or 2, characterized in that a flange (5) is arranged at its lower end, which can be held down for casting by holding rods (7) anchored in the molding box (6). EMI2.1
AT156149D 1937-05-28 1937-05-28 Tubular partition for the production of composite castings, in particular chilled cast iron rolls. AT156149B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT156149T 1937-05-28

Publications (1)

Publication Number Publication Date
AT156149B true AT156149B (en) 1939-05-10

Family

ID=3648775

Family Applications (1)

Application Number Title Priority Date Filing Date
AT156149D AT156149B (en) 1937-05-28 1937-05-28 Tubular partition for the production of composite castings, in particular chilled cast iron rolls.

Country Status (1)

Country Link
AT (1) AT156149B (en)

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