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3100 |
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Thursday, March 29, 2012, SuperC, Hall Ford 3:20 PM Rapid Prototyping/Manufacturing |
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Deposition welding with the electron beam as repair technology |
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Thomas Krüssel / Krüssel Engineering, Germany Andreas Richter* / pro-beam technologies GmbH, Germany Clemens Just/ , Germany |
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Component wear and the associated costs of idleness, acquisition and repair are considerable profitability factors in system operation. Because often delivery of new parts is not possible on short notice, repair and reconstruction methods are economically attractive solutions. The methods of deposition welding offer flexible solutions for this application. The use of electron beam technology is particularly suitable for this purpose. The exactly reproducible adjustability of the parameters makes possible a dosed power input. The layer thickness and fusion penetration can be correspondingly adapted to the requirements and distortions can be minimized. One special advantage is the minimizable degree of dilution between base material and filler, as a result of which not least the layer thickness or number of layers to be applied can be reduced in comparison to other methods. In contrast to conventionally processed systems, electron beam processed components feature a weld deposit overlay that is close to final contours. This reduces the cost of finishing. Due to the adjustable electron beam feature in the point of coincidence of base material, beam and filler there are excellent opportunities for joining the base material and filler to each other and in the process not being tangent to the required component properties, as demonstrated with the presented examples. The process-related vacuum offers further advantages, since environmental influences are ruled out in the processing. As a result the technology can also become a key function for the deposition welding of special materials. As a result of this technological advance the creation of the required vacuum does not pose a problem anymore. |