When the brake parts of the KTX train wore out, they were welded and reused. Due to welding, the parts were deformed, the level of defectiveness was high.
- Worn parts were repaired using 3D printing instead of welding.
- Reducing the level of defectiveness due to the low level of deformation and a small heat-affected zone.
- Increased component strength through improved mechanical properties.
- 15 ~ 20% improvement in mechanical properties during repair using 3D printing compared to traditional welding technology.
- Feed volume control and feed accuracy:
- Tensile strength: 580N / mm2
- Yield Strength: 380N / mm2
- Elongation Ratio: 38%
- Ability to manufacture more complex shapes thanks to movement along five axes.