Applicability Investigation of Joining Technologies for Diamond Core Bits

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Abstract

For the joining of two metallic components of different material quality, different methods of welding or soldering techniques are used. In this case, these two material qualities are given by the segments containing diamond particles, and thin-walled steel tube. In our previous paper we analysed welded joints with two different kinds of laser sources. In this paper we extend the previous investigations with the analysis of capacitor discharge welded and flame soldered samples. We examine the microstructure of the joints and record the chemical element maps to determine if alloying was formed. Joints are also subjected to fracture and hardness testing. This investigation shows that the applied joining technology meets the increased technical requirements because the joining zone must bear high mechanical and significant thermal loads during usage.

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