Hello! What are the key benefits of using CD projection welding for high carbon steel, and how does it address issues related to hardness?

Hey Smoothie!

CD projection welding offers significant advantages when welding high carbon steel, primarily due to its ability to manage the hardness of the weld zone. High carbon steel tends to self-quench rapidly, leading to high hardness (around 800 HV 0.5) which can cause cracking and brittleness under both static and dynamic loads.

CD projection welding mitigates this by allowing multiple energy discharges in the already welded part. This process locally heats the weld zone, effectively annealing it and reducing the hardness to about 600 HV 0.5. This reduction in hardness helps to prevent cracking and improves the material's overall durability and performance in various applications.

By using CD projection welding, manufacturers can ensure more reliable and resilient welds for high carbon steel components. 

Take a closer look on https://www.glamatronic.de/en/cd-projection-welding/ for further informations!