Abstract:
On production of a component, two primary pieces must often be fixed together to give one piece. In order to achieve the above, it is important that the two primary pieces are oriented in a particular manner during the fixing process, which provides some difficulties. According to the invention, a plug body is fixed to the component by a mounting, whereby the position of the plug body relative to the component remains unchanged during a fixing process.

Description:
CROSS REFERENCE TO RELATED APPLICATION  
       [0001]     This application is the US National Stage of International Application No. PCT/DE2003/003639, filed Nov. 3, 2003 and claims the benefit thereof. The International Application claims the benefits of German Patent application No. 10256414.0 DE filed Dec. 2, 2002, both of the applications are incorporated by reference herein in their entirety. 
     
    
     FIELD OF THE INVENTION  
       [0002]     The invention relates to a method for production of a component according to the preamble of the claims.  
       BACKGROUND OF THE INVENTION  
       [0003]     During the production of components, it is often necessary for still further parts to be firmly connected to the component.  
         [0004]     Such a method is disclosed, for example, by EP 868 253 B1. In this method, a filling element within a groove is firmly connected to the component. However, the connection between the filling element and the component in the groove is not sufficiently adequate, since the solder or the connecting layer between the filling element and the component is not uniform or is incomplete.  
       SUMMARY OF THE INVENTION  
       [0005]     The object of the invention is therefore to overcome this problem.  
         [0006]     The object is achieved by a method as claimed in the claims.  
         [0007]     Further advantageous measures are listed in the subclaims. The measures listed in the subclaims can advantageously be combined with one another. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]     The invention is explained in more detail in the following text by using figures, in which:  
         [0009]      FIGS. 1, 2 ,  3  and  4  show a plurality of method steps of the method according to the invention,  
         [0010]      FIG. 5  shows a view of a component which is produced by the method according to the invention, and  
         [0011]      FIG. 6  shows a component after being finished by the method according to the invention. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0012]      FIG. 1  shows a component  1  in a first method step.  
         [0013]     The component  1  has, for example, a groove  4 . The component  1  is, for example, a gas turbine component, such as a turbine blade. Following use, the turbine blade exhibits cracks, which are to be repaired. Such a method is explained in more detail in EP 868 253 B1 and is intended to be the disclosure of this application. In this method, the groove  4  is produced as in  FIG. 1 , or there is an appropriate groove  4 .  
         [0014]      FIG. 2  shows the component  1  in a further method step of the method according to the invention.  
         [0015]     A filling element  7  is to be connected firmly to the component  1  on a surface  8  of the component  1  or in a groove  7  ( FIG. 2 ).  
         [0016]     A distance d of the filling element  7  from the base  5  in the groove  4  can be zero or greater than zero.  
         [0017]     In a gap  6  which is present between the filling element  7  and the component  1  in the groove  4 , for example at least one spacer  10  is arranged, for example in the vicinity of the surface  8  of the component  1 . In this way, a uniform gap can be achieved on both sides between the filling element  7  and the component  1  in the groove  4 .  
         [0018]      FIG. 3  shows the component  1  in a further method step of the method according to the invention.  
         [0019]     In order to keep the filling element  7  in a fixed position during a fixing method for fixing the filling element  7  to the component  1 , use is made of a holder  13  which connects the filling element  4  to the component  1  at least temporarily during a fixing method.  
         [0020]     The holder  13  has at least one first holding point  22  on the surface  8  of the component  1  and at least one second holding point  25  on the filling element  7 . The spacers  10  ( FIG. 2 ) have been removed, for example following the fitting of the holder  13 , but can also remain in the gap  6 .  
         [0021]     In particular, the holder  13  has the shape of a letter M. A first end of the M shape of the holder  13  constitutes the first holding point  22  on the component  1 . The second end of the M shape of the holder  13  constitutes a third fixing point  28  on the component  1 . In the middle of the M shape, the holder  13  is fixed to the filling element  7  at the holding point  25 .  
         [0022]     As a result of the M shape of the holder  13 , an open cavity  19  is produced under the limbs of the M shape. As a result, the gap  6  is also freely accessible under the holder  13 .  
         [0023]     In order to fix the filling element  7  to the component  1 , various fixing methods are available to choose. These are, for example, welding, lasering or electron beam welding and soldering methods.  
         [0024]      FIG. 4  shows, by way of example, the procedure for a soldering method.  
         [0025]     A solder material  16 , for example in the form of solder paste or solder powder, is applied, in particular in the vicinity of the gap  6 . In a soldering process, the solder material  16  is melted and penetrates into the gaps  6  and fills them completely. In addition, if there is a distance d between filling element  7  and base  5  which is different from zero, a hollow volume between filling element  7  and base  5  can be filled with the solder material.  
         [0026]      FIG. 5  shows a view of a component  1  according to  FIG. 3 . The view shows that two holders  13  are used in order to hold the filling element  7  in the groove  4 . However, only one or else more than two holders  13  can also be used.  
         [0027]      FIG. 6  shows a component  1  which has been produced by the method according to the invention.  
         [0028]     After a soldering operation, used by way of example, or after another fixing method, a connecting layer  16  or a solder layer  16  has been produced between the filling element  7  and the component  1 , in the gap  6  previously present. In this way, a fixed connection is produced between the filling element  7  and the component  1 . Excess solder material on the surface  8  and the at least one holder  13  are removed in a last method step, for example by grinding.  
         [0029]     If the filling element  7  is welded on in the groove  4 , then, depending on the welding method, only a partial connection can be produced between the filling element  7  and the component  1 , at the points where the holder  13  is not present. In this case, a connection, welded seam, is produced at the accessible points. As a result, an adequately firm connection is provisionally produced between filling element  7  and the component  1 . The at least one holder  13  can then be removed and the freely accessible region of the gap  6 , which was previously hidden under the holder  13 , can likewise be provided with a connecting layer  16  by means of welding or other connecting methods. The filling element  7  is then connected completely to the component.  
         [0030]     Such a method can be used when repairing cracks.