Micro-arc oxidation (MAO) is also called micro-plasma oxidation (MPO), anodic spark deposition (ASD) or spark discharge anodic oxidation (ANOF), also called plasma enhanced electrochemical surface ceramic chemistry (PECC). The basic principle and characteristics of this technology are: on the basis of ordinary anodic oxidation, arc discharge is used to strengthen and activate the anodic reaction to form a high-quality reinforced ceramic film on the surface of aluminum, titanium, magnesium metals and their alloy workpieces.
Compared with traditional anodic oxidation, the main characteristics of micro-arc oxidation technology are: greatly improve the surface hardness, wear resistance, heat resistance and corrosion resistance of the material, good insulation, environmental protection, stable and reliable process, simple equipment process, convenient operation, easy to master, ceramic film in situ growth, dense and uniform, strong combination, strong;
Power supply composition:
Mainly composed of micro-arc oxidation production line equipment: micro-arc oxidation special power supply, tank group, circulating cooling part, stirring part, guide rail driving part (optional), etc.
Features of Micro-arc Oxidation Power Supply Equipment:
LCD display/touch screen can be automatically controlled and set; with online programmable function; processing time is accurate to seconds; constant current and constant voltage output mode, automatic conversion without disturbance; positive and negative pulse numbers can be set in combination; positive and negative DC output current and voltage can be set continuously within the design range; positive and negative pulse widths can be adjusted separately; pulse frequency range can be set between 100-2000Hz; electrical components in the power supply are cooled by circulating water and air, safe and reliable; short circuit, overcurrent, overvoltage, overheating, phase loss, water shortage and other protection measures.
Features of Micro-arc Oxidation Power Supply Equipment:
With LCD display/touch screen, automatic control, arbitrarily set processing current, voltage, frequency, duty cycle, time, waveform combination and related process parameters.
With online programmable function, process parameter storage and call function, unipolar and bipolar output modes can be set arbitrarily. (Process flow DSP automatic control)
Processing time can be selected from 0-999 minutes, accurate to seconds.
Constant current and constant voltage output mode; constant current and constant voltage are automatically converted online without disturbance.
The number of positive and negative pulses can be set separately, and the number of positive and negative pulses can be set in the range of 1-100, 0-20.
The maximum positive DC output is: current/voltage = 500A/750V; the maximum negative DC output is current/voltage = 500A/200V; the current and voltage can be set continuously within the design range.
The width of positive and negative pulses can be adjusted separately, and the duty cycle can be adjusted in 0-100%%.
The pulse frequency range can be set between 100-2000Hz.
The electrical components in the power supply are cooled by circulating water and air, which is safe and reliable.
Protection measures such as short circuit, overcurrent, overvoltage, overheating, phase loss, water shortage, etc.