The disinfection cabinet control board takes PCB circuit board as the base material and adopts an integrated manufacturing process including SMT patch processing, wave soldering, three-proof coating, program burning and aging testing. The whole process strictly controls moisture resistance, interference resistance and high temperature resistance to adapt to the long-term harsh working environment of high temperature, high humidity and heavy oil fume in disinfection cabinets.

Production starts with incoming inspection of PCB substrates and electronic components. Inspect the copper foil thickness, insulation performance and circuit continuity of the circuit board, and test electrical parameters and appearance of resistors, capacitors, single-chip microcomputers, relays and display components to eliminate defective materials and ensure stable quality from the source.

The process proceeds to SMT mounting, including automatic board loading, solder paste printing and high-speed component placement. The components are solidified by reflow soldering to achieve neat arrangement and firm welding, meeting the requirements of miniaturization and high-density circuit layout of the control board.

After patch processing, plug-in components such as transformers, high-power relays and terminal blocks are installed, and then integrally welded by wave soldering. The forming of strong and weak current circuits is completed at one time to reduce defects such as virtual welding, missing welding and continuous soldering.

Welding is followed by board cleaning and manual repair to remove residual flux and oil stains on the board surface. Inspect and repair poor welding points, organize pins and arrange circuits to keep the board clean and electrically stable.

The next step is program burning and functional debugging. The preset control program is written into the main control MCU, and functions such as switch control, disinfection mode, drying timing, child lock and door interlock are tested one by one to calibrate parameters and ensure accurate and reliable program operation.

Qualified products are sprayed with three-proof paint to form a protective film on the surface of the circuit board and components. The coating provides moisture-proof, mildew-proof and anti-corrosion performance, isolating moisture and oil fume to prevent short circuit and component aging in high humidity environment.

Then the control boards undergo constant temperature aging test by long-term power-on operation in an aging room. Simulate actual working conditions to detect voltage stability, relay sensitivity and program operation status, and screen out early faulty products in advance.

The final finished product inspection includes appearance check, dimension verification, voltage withstand test, insulation detection and load switching test. All hidden dangers such as electric leakage and short circuit are strictly excluded.

Finally, model marking, electrostatic packaging and warehousing are completed to support complete machine assembly and after-sales replacement. The standardized production process ensures that disinfection cabinet control boards feature stable performance, strong anti-interference, moisture resistance and long service life.