Ultrasonic cleaning is the use of ultrasound in the liquid cavitation, acceleration and direct flow into the role of pollutants are dispersed, emulsified, stripped, so as to achieve the purpose of cleaning. Ultrasonic cleaning and general conventional cleaning methods, compared with the cleaning speed, high quality, easy to achieve automation, especially for the surface of the more complex workpiece, such as some surface unevenness, blind holes in mechanical parts, clocks and precision mechanical parts, electronic components, circuit board components and some special small and high requirements for cleanliness of the product, the use of ultrasonic cleaning can achieve the ideal cleaning effect The cleaning process can be carried out using ultrasound.

nPB, methylene chloride (DCM), trichloroethylene (TCE), tetrachloroethylene (PERC), trifluorotrichloroethane (CFC-113), a fluorine dichloroethane (HCFC-141b) and other solvent-based cleaning agent products, due to its non-flash point, non-flammable, strong solvency capacity, but also has a low cost, and therefore highly favored and occupy the ultrasonic cleaning dominant position. However, these cleaning agents are ODS substances, with a certain ODP value (ozone depletion potential) and a high GWP value (global warming potential), which have a destructive effect on the ozone layer, and are non-environmentally friendly cleaning agents, which are mandatory products to be phased out. In addition, some of these cleaning agents are toxic and hazardous substances, and long-term exposure will affect health and even lead to occupational diseases. As the process of phasing out ODS-like substances in China accelerates, ODS cleaning agents are under great pressure to be phased out and many companies are eager to find suitable alternatives.

In order to protect the health of workers while meeting environmental requirements, Yuji New Materials has developed the InnoFluo series (IF series) of environmentally friendly solvent cleaners as an alternative to ODS-based solvent cleaners. IF series environmental solvent cleaner is a safe and environmentally friendly product with 0 ODP, low GWP, non-flash point, non-flammable and non-toxic, and has excellent chemical and thermal stability while ensuring excellent solubility for organic and inorganic contaminants such as oil and dirt.

Table 1. IF Series Semiconductor Solvent Cleaner Product Characteristics

IF series of environmentally friendly solvent cleaning agent is simple to use, can take immersion, rinsing, steam bath washing, rinsing, wiping cleaning, etc., especially suitable for ultrasonic cleaning process, such as a single pure solvent ultrasonic cleaning, co-solvent system ultrasonic cleaning, moisture removal dry cleaning, etc.

(1) Ultrasonic cleaning with a single pure solvent

InnoFluo series cleaning agents are environmentally friendly organic solvents mixed to form an azeotrope, can be used to clean light pollutants, medium pollutants and heavy pollutants, such as lubricating oil, hydraulic oil, flux, silicon oil, wax oil, polishing agent, etc..

InnoFluo series cleaners have the advantages of low surface tension, low viscosity, strong penetration, fast evaporation, easy drying and easy recycling, etc. They can penetrate into the smallest crevices of complex parts, thus effectively removing various contaminants from precision parts.

InnoFluo series cleaning agent as a single pure solvent for ultrasonic cleaning, with no flash point, strong cleaning capacity, less loss, easy to dry, easy to use, safe and environmentally friendly and other characteristics.

Process description

① Warm bath immersion: the workpiece in the detergent warm bath through the ultrasonic wave to remove the attached various pollutants.

② Cold bath rinsing: the workpiece in the detergent cold bath for full cooling, to improve the effect of steam cleaning.

③ Steam cleaning: the workpiece in the detergent steam for full rinsing and drying; ③ Steam cleaning: the workpiece in the detergent steam for full rinsing and drying.

④ Condensation drying: the workpiece is fully condensed and dried in the natural environment to achieve high quality precision cleaning.

(2) Co-solvent system ultrasonic cleaning

For some difficult to clean moderate and heavy pollutants, you can use a co-solvent system for cleaning. This cleaning system includes two solvents: low volatility hydrocarbon or alcohol ether organic solvents, high volatility InnoFluo series cleaning agent. First, the low volatile hydrocarbon or alcoholic ether organic solvent is used to dissolve the contaminants on the surface of the parts, and then the high volatile InnoFluo cleaning agent is used for rinsing and steam cleaning, thus achieving high quality precision cleaning.

InnoFluo series cleaning agents for eutectic system ultrasonic cleaning, with low drying temperature, small thermal impact on the workpiece, no contaminants and low volatile solvent residues, a wide range of applications, safety and environmental protection, no vacuum cleaning and high-temperature drying process and other characteristics.

Process description

① Warm bath immersion: the workpiece in the detergent warm bath through the ultrasonic wave to remove the attached various pollutants.

② Cold bath rinsing: workpiece in the detergent cold bath to remove hydrocarbon / alcohol ether solvents.

③ Steam cleaning: workpiece in the detergent steam for full rinsing and drying.

④ Condensation drying: the workpiece is fully condensed and dried in the natural environment to achieve high quality precision cleaning.

(3) Moisture removal dry cleaning

The InnoFluo range of cleaners is effective in removing water from the surface of parts. After removing contaminants with water-based cleaning agents, the parts are rinsed and steam-bathed with InnoFluo cleaning agents, which effectively removes water and allows them to dry adequately. InnoFluo cleaners significantly reduce drying times and avoid water stains compared to aeration drying methods.

The InnoFluo range of cleaning agents for moisture removal dry cleaning is characterised by high moisture removal capacity, no water residue, short drying times, easy operation and safety.

Process description

① immersion washing: the workpiece in the water-based cleaning agent through the ultrasonic wave to remove the attached various pollutants.

② Pure water rinsing: workpiece in pure water to remove water-based cleaning agent residues.

③ Cold bath rinsing: the workpiece is dewatered in a cold bath of detergent.

④ Steam cleaning: the workpiece is fully rinsed and dried in the detergent steam.

⑤ Condensation drying: the workpiece is fully condensed and dried in a natural environment to achieve high quality precision cleaning.