High-Alloy Strip Electrode Consumable
High-alloy strip electrode addition is a flat welding filler that transfers a uniform alloy to unalloyed base materials. It is used in submerged arc cladding.
Physical-Chemical Mechanism of Action
The high-alloy strip electrode addition consists of a thin layer of metal mounted on an electrode. During welding, it bonds to the unalloyed base material through diffusion processes, changing its composition.
Metallurgical Relevance & Welding Risks
A missing or too low high-alloy strip electrode addition can cause the alloy to not transfer correctly to the base material. This can lead to insufficient strength levels and increased corrosion sensitivity of the weld. Conversely, too high an addition can cause over-alloying, leading to increased hardness and possible cracking.
Workshop Practice & Procedures
For successful application of the high-alloy strip electrode addition, it is critical to use the correct thickness. This should be determined based on the chosen base material and the desired alloy. A typical range is 0.1 to 0.2 mm. The temperature during welding must also be precisely controlled to ensure optimal transfer.