Quality appraisal of ultrasonic equipment

Ultrasonic equipment is a device specially used to generate ultrasonic waves. Its working principle is based on the resonance and amplification of sound waves. Ultrasound refers to sound waves with a frequency higher than the highest frequency 20kHz that can be heard by the human ear. The frequency range of general ultrasonic generators is between 1MHz and 100MHz. The ultrasonic generator can amplify its output signal through resonance to generate high-energy sound waves, and can be used in different applications through the reflection, refraction, propagation and other characteristics of sound waves.
In ultrasonic equipment quality appraisal cases, Zhongke Testing can provide ultrasonic equipment quality appraisal services.

ultrasonic welding machine, ultrasonic handheld welding machine, ultrasonic cleaning machine, ultrasonic electric box, ultrasonic cutting machine, medical ultrasonic diagnostic instrument, ultrasonic humidifier, ultrasonic odor remover, ultrasonic water treatment equipment, etc.

GB 19517-2009 National electrical equipment safety technical specifications
QB/T 2935-2008 Zipper machinery Fully automatic ultrasonic patching machine
MT/T 525-1995 LCZ--80 type microcomputer ultrasonic flow meter
SL/T 185-1997 Ultrasonic depth sounder
CB/T 3559-2011 Ultrasonic testing process and quality classification of ship steel welds
JB/T 6012.4-2008 Internal combustion engine intake and exhaust valves Part 4: Friction welding valves Ultrasonic flaw detection

1. Cause: According to the information provided by the client, the customer purchased 5 sets of "ultrasonic equipment" involved in the case from the supplier for the welding of disposable masks. The demander found that the "ultrasonic equipment" involved in the case could not be used normally, and the equipment still could not be used after repeated guidance and adjustments by the supplier. In order to clarify whether the "ultrasonic equipment" involved in the case can complete the welding of disposable masks and whether it meets the safety requirements of relevant national standards and the product labeling requirements of relevant laws and regulations, the purchaser submitted an application for quality appraisal of the "ultrasonic equipment" involved in the case.
2. Process: Our appraisal expert team went to the location of the equipment and conducted on-site inspections such as visual inspection, on-site testing, and trial production of the equipment involved.
3, Result: The appraisal expert group discussed and comprehensively technical analyzed the relevant information, on-site investigation and test data of the "ultrasonic equipment" involved in the case, and gave the following appraisal opinions:
(1) The "ultrasonic vibrator" involved in the case cannot continuously and stably drive the welding head to produce high-frequency vibration under the driving of the "ultrasonic generator" involved in the case to complete the welding of disposable masks, and the welding quality of the masks does not meet GB/T 32610-2016 "Technical Specifications for Daily Protective Masks";
(2) The "ultrasonic equipment" involved in the case does not meet the safety requirements stipulated in GB 19517-2009 "National Electrical Equipment Safety Technical Specifications";
(3) The label of the "ultrasonic equipment" involved in the case does not meet the relevant requirements.