Research of Silicon Waste Processing Products as Ultradispersed Activating Fluxes of Arc Welding
Year: 2018
Type: article
Abstract: GOAL.Obtain experimental data on the effect of ultrafine silica particles in the welding arc, its penetrating power.METHODS.The arc of DC straight polarity with the current strength in the range 70-400 A burned vertically between tungsten non-consumable electrode (diameter 2.4-4 mm) and the metal surface in inert argon gas (TIG welding).The welding experiments were performed on plates measuring 150×50×(2, 4, 6) mm mild steel 3. Before the A-TIG welding was applied on the surface of the wafer uniform controlled flux activating layer (SiO2-silica) with a width of 5 mm and a thickness of 20 microns.Three flux with different fractional composition were used.RESULTS AND ITS DISCUSSION.The voltage on the arc in the pure argon was 12-15V, in pure argon using a flux activating 16-20 V, welding a gas mixture (30 % argon + helium) without activating the flux voltage was 20-26 V.According to the thermal power in argon arc welding with flux-activating approaches the welding arc in a gas mixture, but at its superior penetrating power.The stitches are formed deep and narrow, wedge-shaped.CONCLUSIONS.The use of activating flux of ultrafine silica leads to the maximum the penetrating arc capacity by increasing the effective heat capacity of the welding heat source.As a result of applying the proposed composition of the activating flux penetrating power of the welding arc has increased by 2-4 times, the energy intensity of the process has decreased by 30-50 %.
Institution: Irkutsk National Research Technical University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2802745697