DE639857C - Centrifugal casting mold for the manufacture of brake drums - Google Patents
Centrifugal casting mold for the manufacture of brake drumsInfo
- Publication number
- DE639857C DE639857C DET45283D DET0045283D DE639857C DE 639857 C DE639857 C DE 639857C DE T45283 D DET45283 D DE T45283D DE T0045283 D DET0045283 D DE T0045283D DE 639857 C DE639857 C DE 639857C
- Authority
- DE
- Germany
- Prior art keywords
- centrifugal casting
- manufacture
- casting mold
- brake drums
- brake
- 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
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/04—Centrifugal casting; Casting by using centrifugal force of shallow solid or hollow bodies, e.g. wheels or rings, in moulds rotating around their axis of symmetry
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Description
Schleudergußform zum e stelkU von Bremstrommeln Durch Weiterentwicklung des Verfahrens nach Patent 629687 gelang @es, Bremstrommeln im Schleuderguß ohne die im Hauptpatent beschriebene Sandauskleidung der Gießmaschine herzustellen und die Auskleidung durch eine Dauerform zu ,ersetzen: Dies war bisher nicht möglich, weil Dauerformen im allgemeinen eine zu starke Abkühlung herbeiführen. Die Schwierigkeit wurde dadurch beseitigt, daß:erfindungsgemäß zwischen Dauerform und umlaufendem Teil der Gießmaschine eine Zwischenschicht eingeführt wird, die bewirkt, daß die Dauerform die Wärme aufspeichert und ;ein Abschrecken des eingegossenen Eisens in gleicher Weise verhindert wie bisher die Sandform.Centrifugal casting mold for the production of brake drums Thanks to the further development of the process according to patent 629687 , @es succeeded in producing brake drums by centrifugal casting without the sand lining of the casting machine described in the main patent and replacing the lining with a permanent mold: this was previously not possible because permanent molds generally have one cause excessive cooling. The problem was eliminated by: according to the invention, an intermediate layer is introduced between the permanent mold and the surrounding part of the casting machine, which causes the permanent mold to store the heat and; prevents the cast iron from quenching in the same way as the sand mold up to now.
Dadurch ergeben sich wirtschaftliche Vorteile in der Fertigurig. Die Dauerform ermöglicht eine genauere Herstellung als die früheren Sandkerne. Die Sandkerne waren nur einmal zu verwenden und mußten für jedes Stück neu angefertigt werden. Naturgemäß war auch die Herstellung der Sandkerne und mit ihnen die Herstellung der Trommeln mit Verlusten durch Ausschuß usw. verbunden.This results in economic advantages in the production facility. the Permanent form enables a more precise production than the earlier sand cores. The sand cores could only be used once and had to be made anew for each piece. The production of the sand cores and with them the production was also natural of the drums associated with losses due to rejects, etc.
Auf der Zeichnung ist eine beispielsweise Ausführungsfornz des Erfindungsgegenstandes dargestellt. Wie im Hauptpatent beschrieben, wird in die Gießmaschine zuerst der Stahlflansch d eingelegt, auf dessen Randteil der geschlossene Gießstrahl geleitet wird. Die das Profil der zukünftigen Bremstrommel bildende Auskleidung b ist jedoch bei dem Verfahren nach der Erfindung nicht mehr aus Sand, sondern aus Eisen hergestellt, stellt also eine Dauerform dar, die gegen den umlaufenden Teil der Gießmaschine durch die Zwischenschicht c geschützt ist, wodurch die Temperatur der Dauerform so hoch gehalten wird, daß keine Abschreckung des Eisens reintritt. Auf der Vorderseite der Trommel befinden sich noch abnehmbare Teile e und f, die, wie früher, aus Sand oder aus sonstigem Werkstoff bestehen können und abgenommen werden, wenn die Bremstrommel fertiggegossen ist. Die Dauerform kann, wie auf der Zeichnung dargestellt, in einem Stück ausgeführt oder aus einzelnen Teilen verfertigt werden, mit denen beispielsweise Rippen auf den äußeren Kranz des Bremszylinders gegossen werden können.The drawing shows an example of an embodiment of the subject matter of the invention shown. As described in the main patent, the Steel flange d inserted, onto the edge of which the closed pouring stream is directed will. However, the lining b forming the profile of the future brake drum is in the method according to the invention no longer made of sand, but of iron, thus represents a permanent form that is against the rotating part of the casting machine is protected by the intermediate layer c, increasing the temperature of the permanent mold is held so high that no deterring the iron enters. On the front side The drum has removable parts e and f, which, as before, are made of sand or made of other material and can be removed when the brake drum is finished casting. The permanent form can, as shown in the drawing, in a Piece executed or made from individual parts, with which, for example Ribs can be cast on the outer rim of the brake cylinder.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET45283D DE639857C (en) | Centrifugal casting mold for the manufacture of brake drums |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET45283D DE639857C (en) | Centrifugal casting mold for the manufacture of brake drums |
Publications (1)
Publication Number | Publication Date |
---|---|
DE639857C true DE639857C (en) | 1936-12-14 |
Family
ID=7562001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET45283D Expired DE639857C (en) | Centrifugal casting mold for the manufacture of brake drums |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE639857C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE941813C (en) * | 1944-10-15 | 1956-04-19 | Eisenwerke Gelsenkirchen A G | Process for the production of iron pipes of larger length by centrifugal casting |
-
0
- DE DET45283D patent/DE639857C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE941813C (en) * | 1944-10-15 | 1956-04-19 | Eisenwerke Gelsenkirchen A G | Process for the production of iron pipes of larger length by centrifugal casting |
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