To determine the reliability of anodizing power supply, comprehensive verification is required from five dimensions: output performance, protection mechanism, long-term stability, process consistency, and service guarantee, rather than relying solely on brand or price.

Output stability is the first line of defense. Using an oscilloscope to measure the output ripple, the hard anodizing power supply should be ≤ 2% RMS, and the micro arc oxidation should be ≤ 1% RMS. If the ripple exceeds the standard, the oxide film is prone to looseness, whitening, or local erosion, which directly reflects the aging or design defects of the power filter and rectifier module.

The protection function must withstand real triggering. Under the premise of not damaging the equipment, if the output terminal is artificially short circuited, the power supply should be cut off within 200 milliseconds and an audible and visual alarm should be triggered; Simulate overheating of the radiator (such as local heating with a hot air gun), and the temperature control protection should respond immediately. Protection items such as phase loss, undervoltage, and abnormal water pressure should also be tested one by one, and any failure of any of them means that there is a significant risk in the production line.

The long-term operational capability determines the lifespan of the equipment. Run continuously for 72 hours under rated load and monitor the temperature changes of the casing. The temperature rise of the water-cooled system should be ≤ 15 ℃, and there is a risk of derating for air-cooled equipment if it exceeds 30 ℃. A truly high reliability power supply should have an MTBF (Mean Time Between Failures) of ≥ 50000 hours, which depends on the industrial grade material selection of IGBT modules, capacitors, and transformers.

The quality of the oxide film is the final judge. No matter how beautiful the power parameters are, if the workpiece shows white rust, scratch adhesion below level 1, and microhardness below HV300 after 48 hours of salt spray testing, the root cause of the problem must be power output fluctuations or control errors. If the deviation of film thickness uniformity exceeds ± 2 μ m, it indicates that the power supply current density control is unstable.

Local services are an implicit guarantee of reliability. In Linyi, Shandong, choosing a supplier with a local after-sales network (such as Shandong Boaos Energy Technology Co., Ltd.) can ensure that repairs, immediate replacement of spare parts, and on-site training of operators can be completed within 48 hours after a malfunction. A 'bare metal' power supply without service support, even if its parameters meet the standards, is difficult to say is reliable.