Design of the Micro-Arc Oxidation Surface Protection GTAW Integrated Pulse Power

Abstract:

Design a welding and micro-arc oxidation integrated pulse power toward micro-arc oxidation problems of the welding parts of aluminum, magnesium, titanium and its alloy, which can achieve the samples surface protection after welding. Adopting modular design, by adjusting PWM inverter buck and high-frequency inverter boost to get the setting voltage value, the power supplying current and voltage value via chopper inverter to realize. The hardware of system makes STM32 as the core, using CPLD as the basis to design the power control system. Software based on block control strategy applying DA to control the power parameters. Load test proved the feasibility of the power supply design. The power supply can output stable operating parameters. Polarization curve test indicated that the power supply improve the corrosion resistance of the weld joint.

• Periodical: Advanced Materials Research (Volume 933)
• Pages: 560-565
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.933.560
• Online since: May 2014
• Authors: Yu Peng Guo, Shi Chun Di*, Hui Liu, Shu Fa Sun
• Keywords: GTAW, MAO, Pulse Power, Surface Protection

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