How is the iridium tip of the IRIDIUM TOUGH welded to the electrode?
We use 360° laser welding to ensure a highly reliable joining.
The 0.4mm iridium tip that generates the high performance of the IRIDIUM TOUGH is an alloy with a very high melting point. Therefore, ordinary resistance welding cannot be used because the iridium does not melt enough and an adequate weld strength cannot be guaranteed.
"360° laser welding", which employs a high-energy laser, is used in the IRIDIUM TOUGH to melt and weld all around welding points.
Because all area to be welded is completely melted, the welding point is extremely reliable, thus ensuring stable and quality response without changes in the electrode, even under heavy driving conditions.