DE673166C - Blade for centrifugal machines, especially for steam turbines - Google Patents
Blade for centrifugal machines, especially for steam turbinesInfo
- Publication number
- DE673166C DE673166C DEA74155D DEA0074155D DE673166C DE 673166 C DE673166 C DE 673166C DE A74155 D DEA74155 D DE A74155D DE A0074155 D DEA0074155 D DE A0074155D DE 673166 C DE673166 C DE 673166C
- Authority
- DE
- Germany
- Prior art keywords
- blade
- steam turbines
- centrifugal machines
- blades
- welding
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/04—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Schaufeln für Kreiselmaschinen, insbesondere für Dampfturbinen. Sie besteht darin, daß das Schaufelblatt mit dem Schaufelfuß durch elektrische Stumpf sehweißung verbunden ist.The invention relates to a method for producing blades for centrifugal machines, especially for steam turbines. It consists in the fact that the blade with the Blade foot is connected by electrical butt welding.
Es ist zwar bekannt, Turbinenschaufeln an Turbinenräder anzuschweißen, wobei in einem Falle Stücke, die die Schaufeleintrittskante, den Bauch und die Schaufelaustrittskante bilden, von einem Profilstab abgeschnitten und hierauf an den Körpern, die aus dem Radkranz herausgearbeitet sind, durch Schweißen befestigt werden. Im Falle der ErfindungAlthough it is known to weld turbine blades to turbine wheels, in one Trap pieces covering the blade leading edge, belly, and the blade trailing edge form, cut from a profile bar and then on the bodies that come from the Wheel rim are worked out, are attached by welding. In the case of the invention
J5 handelt es sich aber nicht um die Befestigung der Laufschaufeln an dem Laufkörper, sondern um die Herstellung von Schaufeln, die mit dem Laufkörper nicht durch Schweißen verbunden werden. However, J 5 is not concerned with the attachment of the rotor blades to the rotor body, but rather with the manufacture of blades that are not connected to the rotor body by welding.
Es ist nun weiter bekannt, Werkstücke von verschiedenem Baustoff durch Schweißen miteinander zu verbinden, z.B. bei .Spiralbohrern, wo ein Werkzeugteil aus hochwertigem Stahl mit einem Teil aus weniger wertvollem Stahl elektrisch stumpf zusammen^ geschweißt wird.It is now also known to weld workpieces of various building materials to connect with each other, e.g. for twist drills, where a tool part is made of high quality Steel is electrically butted together with a part made of less valuable steel ^ is welded.
Die Übertragung des auf einem anderen Gebiete der Technik bekannten Verfahrens auf die Herstellung von Turbinenschaufeln bietet den besonderen Vorteil, daß unter Verwendung von Profilstäben durch die getrennte Herstellung von Blatt und Fuß bei Zusammenfügung der beiden Teile durch elektrische Stumpfschweißung an Baustoff gespart wird und die Gestehungskosten herabgesetzt werden, ohne daß die Betriebssicherheit irgendwie gefährdet ist. Bei Anwendung des elektrischen Stumpfschweißverfahrens bleiben nämlich die Berührungsflächen der zu verbindenden Teile metallrein, so daß sich eine allen Anforderungen genügende sichere Verbindung ergibt.The transfer of the method known in another field of technology on the manufacture of turbine blades has the particular advantage that under Use of profile rods due to the separate manufacture of blade and foot By joining the two parts together, electrical butt welding saves building material and the production costs are reduced without compromising operational reliability is somehow endangered. When the electric butt welding process is used, the contact surfaces remain of the parts to be connected metal clean, so that all requirements are met results in a secure connection.
Die Zeichnung zeigt die praktische Durchführung des Verfahrens an einem Ausführungsbeispiel. The drawing shows the practical implementation of the method using an exemplary embodiment.
Abb. ι gibt eine schaubildliche Darstellung der herzustellenden Schaufel. Mit 1 ist das Schaufelblatt und mit 2 der Schaufelfuß bezeichnet. Der Schaufelfuß ist mit zwei Einschnitten 3 versehen, die quer zur Längsrichtung der Schaufel verlaufen und dazu dienen, die Schaufel in entsprechenden Ringnuten der Turbinenräder festzuhalten.Fig. Ι gives a diagrammatic representation of the blade to be produced. With 1 is the blade and 2 denotes the blade root. The blade root is with two 3 incisions are provided, which run transversely to the longitudinal direction of the shovel and serve to to hold the blade in the corresponding annular grooves of the turbine wheels.
Zur Herstellung des Schaufelblattes 1 wird gemäß Abb. 2 ein Profilstab 4 aus hochwertigem Stahl genommen, von welchem der Liänge des Blattes entsprechende Teile 5 abgeschnitten werden.To produce the blade 1, a profile rod 4 made of high quality is shown in Fig. 2 Steel taken from which parts 5 corresponding to the length of the blade were cut off will.
Schaufelfuß und Schaufelblatt werden alsdann durch Schweißung miteinander verbunden. The blade root and the blade are then connected to one another by welding.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US673166XA | 1933-09-30 | 1933-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE673166C true DE673166C (en) | 1939-03-16 |
Family
ID=22075173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA74155D Expired DE673166C (en) | 1933-09-30 | 1934-09-21 | Blade for centrifugal machines, especially for steam turbines |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE673166C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE877691C (en) * | 1951-06-12 | 1953-05-26 | Siemens Ag | Process for the manufacture of turbine blades |
| DE968525C (en) * | 1952-09-12 | 1958-02-27 | Napier & Son Ltd | Centrifugal machine hollow blade |
-
1934
- 1934-09-21 DE DEA74155D patent/DE673166C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE877691C (en) * | 1951-06-12 | 1953-05-26 | Siemens Ag | Process for the manufacture of turbine blades |
| DE968525C (en) * | 1952-09-12 | 1958-02-27 | Napier & Son Ltd | Centrifugal machine hollow blade |
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