Advantages of Ultrasonic Atomization Technology for Metal Powder

Ultrasonic atomization technology for metal powder is a new energy-saving and environmentally friendly technology for preparing metal powder. The outstanding advantages of ultrasonic atomization method are simple equipment structure, small volume, and even no moving parts. High reliability, easy sealing and maintenance. Especially suitable for scientific research institutions, process testing, small batch and multi batch fine production fields, high-power ultrasound can also have greater output.

The current status of metal powder preparation technology: From the perspective of actual production, among many metal powder preparation processes, atomization method is currently the most important welding powder preparation method. According to different atomization methods, there are mainly three types: gas atomization, rotary centrifugal atomization, and ultrasonic vibration atomization.

1. Gas atomization

Gas atomization is the use of high-speed airflow to disperse molten liquid flowing through a nozzle, atomize it into small droplets, and cool and solidify during the settling process to form powder particles. Its characteristics are high crushing efficiency and large output, but the resulting products are mostly elliptical in shape, with rough surfaces, attached fine powder, high oxygen content, wide particle size distribution, high proportion of fine powder, and difficult subsequent processing. In addition, nitrogen consumption is high and the cost is high.

2. Rotary centrifugal atomization method

Rotary centrifugal atomization, with its unique advantages of controllable powder particle size, morphology, cleanliness, and low cost, has been increasingly valued and become an important method for preparing metal or alloy powders. Compared with gas atomization, using centrifugal atomization method to prepare solder powder makes the atmosphere relatively easy to control, the product has good sphericity, low oxidation degree, easy particle size control, high yield, and large output. The disadvantage is that the equipment has a high rotational speed and requires high heat and wear resistance from the motor. In addition, the use of vacuum exhaust devices and high-speed motors increases equipment costs.

3. Ultrasonic atomization method

Ultrasonic atomization method is a new type of powder production method developed in recent years, which uses ultrasonic waves to atomize molten metal into powder. Compared with the above two atomization processes, the ultrasonic atomization process produces solder powder with good sphericity, narrow particle size distribution, low oxygen content, but low yield.

The ultrasonic atomization technology of metal powder has the following advantages

1. The obtained powder has high purity, low oxygen content, good sphericity, and uniform particle size distribution.

2. The equipment and process are simple, the operation is convenient, and the product quality is stable and controllable.

3. Significant advantages include low energy consumption, high utilization rate, and low cost.

4. The ultrasonic atomization method has outstanding characteristics such as environmental protection, energy saving, low-carbon, and hygiene.