The cleaning of precision machined parts requires the efficient removal of micron- or even nano-sized contaminants such as oil, metal shavings, and cutting fluid without damaging the workpiece. Depending on the material, structural complexity, and cleaning requirements, the following mainstream and effective cleaning methods can be used:
1. Ultrasonic Cleaning (Recommended for high-precision, complex structures)
Suitable for parts with blind holes, narrow crevices, or micro-structures, such as gears, bearings, molds, and electronic components.
Principle: Utilizing the "cavitation effect" generated by ultrasonic waves in the cleaning fluid, forming microbubbles that burst instantaneously, generating impact force to remove contaminants.
Advantages: Thorough cleaning, reaching even the smallest crevices; Minimal damage to the workpiece surface; Can be used with water-based or hydrocarbon cleaning agents, environmentally friendly.
Key Parameter Settings:
Frequency Selection: For precision parts, a frequency of 40kHz or higher is recommended to reduce the risk of cavitation erosion.
Temperature Control: The optimal temperature for oil stain cleaning is 50℃~65℃; excessively high temperatures will weaken the cavitation effect.
Time and Power: Generally controlled within 4~12 minutes, with moderate power density to avoid surface roughening.
2. Instantaneous Steam Cleaning (Suitable for online cleaning, no residue requirements)
Particularly suitable for cleaning electronic components that are sensitive to liquid residue and require rapid drying, or for pre-assembly cleaning.
Principle: High-temperature dry steam (80–130℃) dissolves oil stains, and a flexible steam flow carries away debris.
Advantages:
No liquid residue, no drying required, can proceed directly to the next process; Supports "non-disassembly cleaning," such as inaccessible areas like mold cavities and runners; Instant steam output, adaptable to assembly line production rhythms.
Application examples: Cleaning car transmission gears reduced the time from 1 hour to 20 minutes, increasing the assembly pass rate to 99%; Cleaning mobile phone motherboard connectors reduced the short circuit failure rate from 8% to 1%.
