Custom Gear Manufacturing Case Study: Turbine Fastening Carbide Coupling

We can process heat-resistant alloys that are difficult to machine, as well as uniquely shaped turbine workpieces!

This is a Karvik coupling used for fastening turbines. It is a heat-resistant alloy that is difficult to process, and due to the turbine's unique irregular shape, chucking was challenging. Additionally, since the turbine operates at a rotational speed of 70,000 to 80,000 RPM, the weight balance between the parts connected via the Karvik coupling is crucial, and the machining was very focused on the pitch accuracy of the teeth. Furthermore, due to the centrifugal force from high speeds, the material deforms, resulting in a special tooth contact for the coupling. In terms of coupling strength, achieving high precision in the machining of the coupling, such as the radius at the tooth base and the runout after coupling connection, was quite difficult. In this case, there were no issues such as tooth surface burning with the difficult-to-machine material during the coupling processing, and we were able to maintain machining accuracy, allowing for smooth delivery without quality control problems. Moreover, we have many examples of Karvik couplings at our company, and we can handle the machining of Karvik couplings located at the edges of impellers and discs. Additionally, we can select optimal tools and set processing conditions for heat-resistant alloys such as titanium and Inconel, so if you have any questions regarding gears, please feel free to contact us from the design stage.

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