AT153642B - Process for the production of wrought iron flange flanges, flange rings and the like. like - Google Patents
Process for the production of wrought iron flange flanges, flange rings and the like. likeInfo
- Publication number
- AT153642B AT153642B AT153642DA AT153642B AT 153642 B AT153642 B AT 153642B AT 153642D A AT153642D A AT 153642DA AT 153642 B AT153642 B AT 153642B
- Authority
- AT
- Austria
- Prior art keywords
- flange
- production
- flanges
- wrought iron
- rings
- Prior art date
Links
Landscapes
- Powder Metallurgy (AREA)
- Forging (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung schmiedeiserner Ansatzflanscben, Ansatzbordringe u. dgl.
Schmiedeiserne Ansatzflanschen, Ansatzbordringe u. dgl. weisen, wenn sie auf der Exzenterpresse aus der vollen Rohscheibe hergestellt werden, eine stark abgerundete Innenkante des ausgepressten Mittellochs auf, da beim Herauspressen des Ansatzes die obersten Materialschichten mitgezogen werden.
Solche Ansatzflanschen bedürfen einer umständlichen, das Erzeugnis verteuernde Nacharteit durch Abdrehen der Flanschfläche bis zur Erreichung einer eckigen Innenkante, worauf insofern Rücksicht genommen werden muss, als die Dicke der Rohscheibe um den abzudrehenden Teil stärker gewählt werden muss. Dadurch wird mehr Arbeit zum Auspressen und eine teuere Nacharbeit bei nicht unbedeutendem Materialabfall unvermeidlich.
Um diese Nachteile zu beseitigen, wird gemäss der Erfindung in die beim Auspressen nach oben liegende Fläche der Rohscheibe, deren Dicke der Flanschendicke entsprechen kann, eine schmale Ringnut vom ungefähren Durchmesser des auszupressenden Mittellochs eingearbeitet, wie dies in Fig. 1 und 2 veranschaulicht ist. a ist die Rohscheibe, b die Ringnut.
Wird nun die so vorbereitete Rohscheibe ain warmem Zustand auf die Exzentei presse gebracht, so werden vom Pressstempel die diesem zunächstliegenden Materialschichten durchtrennt und nicht oder nur wenig mitgezogen, so dass die angestrebte eckige. Innenkante c, wie Fig. 3 zeigt, erhalten wird.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of wrought iron attachment flanges, attachment rim and. like
Wrought iron flange flanges, flange rings, etc. The like. If they are produced on the eccentric press from the full raw disk, a strongly rounded inner edge of the pressed-out center hole, since the uppermost material layers are pulled along when the attachment is pressed out.
Such attachment flanges require a cumbersome aftertaste that makes the product more expensive by turning the flange surface until an angular inner edge is reached, which must be taken into account as the thickness of the raw disk around the part to be turned off must be chosen to be stronger. As a result, more work for pressing out and expensive reworking with not insignificant material waste is inevitable.
In order to eliminate these disadvantages, according to the invention, a narrow annular groove with the approximate diameter of the central hole to be pressed out is machined into the surface of the raw disk which is upward during pressing, the thickness of which can correspond to the flange thickness, as illustrated in FIGS. 1 and 2. a is the raw disk, b the ring groove.
If the raw disk prepared in this way is brought to the eccentric press in a warm state, the material layers lying next to it are cut through by the press ram and not or only slightly pulled along with it, so that the angular. Inner edge c as shown in Fig. 3 is obtained.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT153642T | 1937-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT153642B true AT153642B (en) | 1938-06-25 |
Family
ID=3647669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT153642D AT153642B (en) | 1937-05-13 | 1937-05-13 | Process for the production of wrought iron flange flanges, flange rings and the like. like |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT153642B (en) |
-
1937
- 1937-05-13 AT AT153642D patent/AT153642B/en active
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