Modification of Inert Oxy-Acetylene Welding Nozzle

In Continuation of the project cited as Ref-1. Our team has taken a step further in this direction for improving and optimizing the nozzle design and its parameters for achieving better results from “Inert Oxy-acetylene Welding “.The project discussed here tackles with the shortcomings of the previous nozzle design, the most important was hindrance of the shielding gas with oxy-acetylene flame.In Inert oxy-acetylene welding Air in the weld zone is displaced by the shielding gas, thus preventing the contamination of the molten weld puddle.This contamination is caused by nitrogen, oxygen and water vapors present in the atmosphere. The idea of introduction of shielding gas in oxy-acetylene welding is based upon its usage in MIG/TIG welding process.Argon has been used as shielding gas to avoid defects associated with the contamination of the weld pool. The modified nozzle design proposed in this paper, thus eliminates the limitations of previous nozzle design and helps in optimization of the overall welding process. Therefore, the main flame and the shielding gas are appropriately distanced from each other. Flame temperature rises significantly, resulting in deeper penetration, better hardness and strong welds.