Ultrasonic cleaner performance verification method

ultrasonic cleanerPerformance Verification Methods

Since the principle of ultrasonic cleaning is the cavitation effect, its performance verification is mainly to verify the cavitation effect, the purpose is to see whether there is a blind spot in the intensity of the acoustic field in the cleaning tank. There are many methods. Here are some examples for reference.

(1) Aluminum foil corrosion methodultrasonic cleanerPerformance Verification

Place the 20 - 30 micron thick aluminum foil paper on the holder and place it vertically in the cleaning tank without touching the bottom. After the machine has been started for some time, the degree of corrosion on different parts of the aluminum foil surface can indirectly reflect whether the depth of the ultrasonic intensity is uniform. To check the distribution of the ultrasonic intensity in the horizontal direction, the aluminum foil can be placed horizontally. The manufacturer's manual states that >, 1 square inch (6.45 square centimeters) of blank is a cold spot.

The method is intuitive and easy to use, but it is not quantitatively detectable and has a high degree of error. It is difficult to test under the condition of loading equipment, and may have chemical reaction with alkaline cleaning agent. Sometimes the whole thing falls off, so set the ultrasonic time.

(2) Slide flushing method

Slides were coated weekly with an HB pencil and cleaned with ultrasound within 3 minutes. The results were recorded (IAHCSMM Re-education and Training Manual 2006). This method is simple to perform, but it is not quantitative and has a high degree of error.

(3) Starch potassium iodide reaction methodsultrasonic cleanerPerformance Verification

Starch is treated into a photosensitive emulsion, applied to a slide and placed in an ultrasonic container containing a dilute iodine solution. Under ultrasonic cavitation, the iodine and starch reacted to turn blue, resulting in discoloration of the slide. The slide is rinsed and dried, and the distribution of the acoustic field is inferred from observation of the discolored areas of the slide. This method can make up for the defect of aluminum foil damage in the aluminum foil corrosion method, but it cannot be quantitatively detected.

(4) Staining method

Water distribution of dyes (such as methylene blue dyeing), ultrasonic will be coated in water, ultrasonic cavitation, the dye will be attached to the paper, remove the paper rinsed and dried, observe the dye pattern of the background, the distribution of the acoustic field, if the coating is not uniformly distributed, the acoustic field is uneven, such as in cold places.

(5) Ultrasonic energy bottle testultrasonic cleanerPerformance Verification

The ultrasonic energy bottle can be used to verify ultrasonic cavitation capability, and the time required for the color change is directly proportional to the ultrasonic cavitation capability (IAHCSMM Re-education Training Manual 2006). The energy bottle is placed in different positions depending on the volume of the tank and the color change time is observed. The method is intuitive, simple, and qualitatively measurable.

(6) Ultrasonic energy analyzerultrasonic cleanerPerformance Verification

Inserted directly into the solution, the ultrasonic energy intensity and ultrasonic energy density distribution can be quantitatively detected. In practice, the above methods can be used as the department's own monitoring tools, with both advantages and disadvantages. Ultrasonic cleaning machine is only part of the cleaning process, and our goal is to ensure the quality of cleaning, therefore, for the establishment and optimization of the process and compliance, but also essential.