Reusability by filling the wear parts of worn down plasma nozzles with silver containing solders
Ozkan Eski Ayse Yayli Eyuboglu Serkan Islak
AbstractDuring the cutting process, this arc occasionally occurs between the throttle nozzle and the electrode and is distorted in the form of the exit hole of the plasma for other reasons. Distortion in the form of the plasma flow hole disturbs the plasma arc and the compressed air flow surrounding the plasma arc, which in turn affects the cutting quality negatively. In this study, we investigated the possibility of reusability(recycling) by filling the wear parts of worn down nozzles with silver containing solders. For this purpose, the wear zones were machined to a diameter 6 mm and a depth of 3 mm, and then solder fillings containing silver were made on the region discharged by oxy-gas flame. The filling area was machined by original drilling with a diameter of 1.6 mm. Throttle nozzle filled with solders containing silver, 2%, 20% and 40% were used for cutting 5 mm thick sheets. Cutting operations of 1 meter length were carried out at a cutting speed of 1 m/min at a current of 50 amperes and a material loss per 10 meters was measured weight and geometrically. The results obtained were compared with the material losses in the copper throttle nozzles.