Ultrasonic Flux Spray Precision Welding Process

Ultrasonic Flux Spray Precision Welding Process – Cheersonic

In welding processes in electronics manufacturing, automotive electronics, and other fields, uniform flux application is a crucial step in ensuring welding quality. Traditional flux application methods such as brushing and immersion often face problems such as uneven coating, flux waste, and damage to components. The emergence of ultrasonic flux spray coating technology, with its advantages of precision, efficiency, and environmental friendliness, has become a significant breakthrough in upgrading modern welding processes.

The core of ultrasonic flux spray coating technology is the use of high-frequency ultrasonic vibration energy to atomize and precisely spray the flux. Its working principle can be divided into three key steps: First, the flux enters the ultrasonic atomization device under pressure; second, the ultrasonic generator produces high-frequency vibrations, breaking the flux into micron-sized uniform droplets, avoiding the uneven droplet size caused by uneven pressure in traditional spraying; finally, the atomized flux, through a precision nozzle, precisely covers the welding area under airflow control, and the droplets have strong adhesion, making them less prone to dripping or accumulation. This principle allows it to adapt to the coating needs of micro-solder joints and high-density components, solving the technical bottlenecks of traditional processes in precision welding.

Compared to traditional coating methods, ultrasonic flux spray coating has three core advantages. First, it offers high coating precision. By adjusting the ultrasonic frequency and nozzle parameters, it can achieve precise coating of solder joints with a minimum diameter of 0.1mm, with droplet uniformity error controlled within ±5%, effectively reducing welding defects such as cold solder joints and bridging. Second, it balances efficiency and economy. The atomization process has no unnecessary losses, increasing flux utilization by more than 40% compared to immersion methods. Furthermore, the automated spray process can adapt to production line cycles, increasing single-station coating efficiency by 2-3 times. Third, it boasts outstanding compatibility and environmental friendliness. Its low-temperature atomization characteristics do not damage heat-sensitive components, and some equipment is equipped with a droplet recovery system, reducing volatile organic compound emissions and meeting the environmental requirements of modern manufacturing.

Currently, ultrasonic flux spray coating technology has been widely applied in several core fields. In consumer electronics, it provides precise coating for the soldering of micro-circuit boards in mobile phones and laptops, ensuring reliable connections between chips and components. In automotive electronics, for high-density circuit boards used in vehicle radar and autonomous driving controllers, this technology enables uniform coating of complex solder joints, improving the vibration resistance and high-temperature resistance of automotive electronics. In the new energy sector, its efficient coating capabilities help improve product consistency and lifespan in the soldering of power battery tabs and photovoltaic module junction boxes.

As the manufacturing industry moves towards precision and intelligence, ultrasonic flux spray coating technology is also continuously upgrading. In the future, this technology will be further integrated with intelligent detection systems, using visual recognition to adjust coating parameters in real time, achieving closed-loop control of “detection-coating-feedback.” Simultaneously, specialized ultrasonic spray equipment for different materials and soldering processes will continue to emerge, further expanding its application boundaries. Ultrasonic flux spray coating is not only a significant innovation in current soldering processes but will also become a key supporting technology for improving the quality of high-end manufacturing.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

Chinese Website: Cheersonic Provides Professional Coating Solutions