Downward vertical welding position

Physical-Chemical Mechanism of Action

The fall weld position uses gravity to guide the weld metal from top to bottom. This reduces stress and allows high welding speeds.

Metallurgical Relevance & Risks in Welding

This position prevents stress concentration and promotes even deformation of the material. Incorrect application can lead to uneven deformation or stress exhaustion, resulting in cracks or failures in the weld metal.

Workshop Practice & Instructions

Use this position for pipelines with thin to medium wall thicknesses. Ensure that the weld metal is held stable and deformation is uniform. A speed of 10-20 cm/s is typical.