How Do I Choose the Best Circuit Board Cleaner?
The ultrasonic cleaning agent has the function of thoroughly cleaning the oil stains of various parts. The unique chemical action destroys the molecular structure of various lubricating greases, so as to achieve the purpose of quickly and thoroughly removing heavy oil scale.
Ultrasonic cleaning agent
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- Chinese name
- Ultrasonic cleaning agent
- Definition
- Efficient and environmentally friendly water-based metal special cleaning agent
- Features
- Excellent cleaning effect and strong penetration
- Exterior
- White or light yellow liquid
- The ultrasonic cleaning agent has the function of thoroughly cleaning the oil stains of various parts. The unique chemical action destroys the molecular structure of various lubricating greases, so as to achieve the purpose of quickly and thoroughly removing heavy oil scale.
- Ultrasonic cleaner (water-based) Ultrasonic metal cleaner
- ;
- PH value: 10.0 12.0;
- Ingredients: Multiple
- Dirt cleaning of metal, non-metal, paint, ceramic, glass, plastic and other materials.
- 1.This product is used for ultrasonic cleaning and
- Properly increasing the concentration can improve the cleaning ability; often remove oily impurities and replenish a small amount of new liquid; it can be completely replaced once every 2 to 3 months to extend the use of the cleaning liquid; the heating and cleaning effect is better.
- When selecting a cleaning fluid, the following three factors should be considered:
- The cleaning effect is good, the cleanliness is high, and the cleanliness of all the workpieces is consistent.
- Fast cleaning speed, improve production efficiency, no manual contact with cleaning liquid, safe and reliable.
- Deep holes, fine seams and hidden parts of the workpiece can also be cleaned.
- No damage to the surface of the workpiece, saving solvent, heat energy, work place and labor.
- The ultrasonic cleaning method exceeds the conventional cleaning methods in general, especially the surface of the workpiece is more complicated, such as mechanical parts with uneven surfaces and blind holes, and some particularly small products with high requirements on cleanliness, such as clocks and watches. Precision machinery parts, electronic components, circuit board components, etc., can achieve very good results using ultrasonic cleaning. The principle of ultrasonic cleaning is that the high-frequency oscillation signal sent by the ultrasonic generator is converted into high-frequency mechanical oscillation by the transducer and propagated to the medium-cleaning solvent. The ultrasonic wave is densely and equally radiated forward in the cleaning liquid, making the liquid Flowing to produce tens of thousands of tiny bubbles.
- These bubbles form and grow in the negative pressure area where the ultrasonic waves propagate longitudinally, and close rapidly in the positive pressure area. In this process known as the "cavitation" effect, the bubble closure can form an instantaneous high pressure in excess of 1,000 atmospheres, and the instantaneous high pressure is continuously generated like a series of small "explosions" that continuously impact the surface of the object, making the surface The dirt in the gap is quickly peeled off, so as to achieve the purpose of purifying the surface of the object.
- The mechanism of ultrasonic cleaning mainly has the following aspects: Because a strong shock wave is generated when the cavitation bubble bursts, a part of the dirt layer is peeled off, dispersed, emulsified, and peeled off under the action of the shock wave. The air bubbles generated by cavitation penetrate the gaps and voids between the dirt layer and the surface layer formed by the impact. Due to the small bubbles and sound pressure expanding and contracting simultaneously, the physical force like peeling repeatedly acts on the dirt layer, dirt The layers are peeled off layer by layer, and the air bubbles continue to penetrate inward until the dirt layer is completely peeled off. This is the secondary effect of cavitation. Impact of cleaning solution ultrasonic vibration on dirt in ultrasonic cleaning. Ultrasound accelerates the dissolution of dirt by chemical cleaning agents. The combination of chemical and physical forces accelerates the cleaning process.
- Ultrasonic cleaning is not only related to the frequency of ultrasonic waves, but also to the sound pressure intensity of ultrasonic waves. It is also related to the physical properties of the cleaning medium (cleaning agent), such as temperature, vapor pressure, surface tension, density, and viscosity. In addition, the gas and dissolved oxygen contained in the cleaning medium also have a significant impact. Different cleaning media have different physical properties and different cavitation thresholds. The greater the surface tension of the cleaning medium, the greater the energy required for cavitation, that is, the cavitation threshold increases. The greater the viscosity of the cleaning medium, the less likely it is to generate cavities, and the greater its cavitation threshold. The vapor pressure of the cleaning medium also has an effect on cavitation. Cavitation occurs only when the local pressure of the cleaning medium is less than the vapor pressure of the cleaning medium itself.
- Temperature has an effect on the vapor pressure, surface tension, and viscosity of the cleaning medium, so it also affects cavitation. When the temperature reaches the boiling point, cavitation will no longer occur.
- Cleaning agent can be recycled
- This cleaning method can save a large amount of cleaning agent. After using the ultrasonic cleaning machine each time, it is best to put the cleaning agent in a container and pour it into the cleaning tank next time. The remaining sediment can be disposed of. If the concentration of the cleaning agent is not enough, add a little amount of it and it can be reused.
- Learn as much as possible about the physical properties of the cleaning agent
- It can greatly improve the cleaning efficiency of the ultrasonic cleaning machine. For example, a low-viscosity cleaning agent is suitable for gap cleaning; a low boiling point has more volatility loss, but it is suitable for steam cleaning; choosing an appropriate temperature according to different cleaning agents has a great impact on cleaning results Big wait.
- Waste treatment issues
- Taking water-based cleaning agent as an example, because the ultrasonic cleaning machine contains greasy dirt, mud, sand, carbon deposits, metal shavings, and polar oxides in the waste liquid after cleaning, the water quality does not meet the discharge standards and should be treated. The general process can be divided into three steps:
(1) Settle and filter by physical method to remove suspended matter, oil slick and sediment;
(2) combining emulsified oil, salting out, coalescence, air flotation and electrolysis to achieve oil separation;
(3) Sewage purification can use biochemical method, ozone method, sand filtration activated carbon adsorption method, etc.
The wastewater treated by the three-stage process can meet the national wastewater discharge standards.