sulfuric acid anodizing DC switch mode power supply

Specifications anodizing power supply

soft start

pulse wave output

time saving, better effect

constant current, constant voltage

sulfuric acid anodizing DC switch mode power supply achieves better quality oxidation surface: Anodizied surface enhances wearing-resistant, non-conductive, corrosion resistant, which can applied for not only aluminum but nickel. titanium, chrome etc. metal. The oxide quality is better if anodizing is carried out by using a pulse rectifier, the average current of which is equal to the one of a conventional rectifier. This advantage is proved by several tests and can also theoretically be explained.   Time saving: Experience shows that by using a pulsating waveform it is possible to carry out anodizing (and also other electrodeposition treatments) at a higher average current in comparison with conventional direct current.
This may well be due to the cooling of the oxide layer in the interval between two consecutive pulses, following the known “recovery” theory. Therefore by using pulse rectifiers it is possible to get the same thickness in shorter time, with the benefits of 20-25% approx. time saving.  BETTER QUALITY (by using the same average current)   Theoretical explanation:
The accepted recommended current density range for anodic oxidation of aluminium lies between 1.4 and 1.8 A/dm2.
When using too low a value of current density this gives a very porous layer of oxide film which results in an excessively wet surface, this is therefore more susceptible to the “re-attack” of the electrolytes.
In addition, a low current density also requires a longer oxidation time to obtain a given oxide film which creates an even greater dissolution of the oxide being formed.
Conversely, if the current density increases, the time required to produce the same given oxide film will be decreased and moreover the hardness and corrosion/abrasion resistance will be increased.
When considering these factors, it is clearly better to carry out the oxidation at a sufficiently high value of current density, within certain limits of course that the heat generated can be easily dissipated to prevent damage to the oxide layer by burning or perforation etc.
The use of pulse rectifiers in anodizing gives the advantages of using a high current density without the disadvantage of excessive heat generation and the consequent detrimental effects to the oxide film.
Infact, if we compare the waveform of a conventional rectifier with that of the pulse rectifier, the oxide quality achieved is the relative to the higher current level and not the average value, upon which the heat generation depends
This can be explained theoretically by the following considerations: 1. The pulse duration at the high level  is longer than the low level duration (base) 2. Due to a “recovery phenomenon” at the time of the fast change from high to low level, the modification of the oxide happens in such a slow way that it prevents any significant changes.   The plant pictures:                                                      Good cooper raw material          Transformer and heat distractor assembling                                     QC testing and inspection                              Wood case package picture:                                        Company Capability                                                                                       Standard size: Output ampere: 600-30000A, output voltage:0-50V Other specification can custom according to customer requirement.   Technical Datas:

Input voltage		3-phaseAC200/220V±10% or AC380/400V/400V±10% 50/60Hz
Output current		600-30000 A
Output voltage		0-50V
Control method		Thyristor-based continuous step less control
Rated·cooling		Continuous/Forced air or water cooling
Conditions of Use	Ambient temperature	0~40C degree
	Relative humidity	30%~85%
	Altitude	1000m or less