What is ultrasonic dip soldering equipment？

Ultrasonic dip welding is more environmentally friendly than traditional welding methods. The vibration and cavitation phenomena during the ultrasonic dip welding process cause the oxide layer on the surface of the weldment to fall off. The high-frequency vibration energy will not melt the solder, and it helps the solder to moisten the weldment. .

Ideal for coating large areas during dip welding. The solder is melted in a special soldering crucible equipped with an ultrasonic vibrator. The coated part is immersed as the molten solder creates ripples on the ultrasonically vibrated surface. The surface cleanliness of the welded parts has a significant impact on the welding performance. It is recommended to clean the welding surface with acetone before welding to achieve better welding results.

Principle

Ultrasonic dip soldering uses the principle of ultrasonic cavitation. During the welding process, vibration energy creates cavitation in the molten pool. After the parts immersed in the molten pool are strongly corroded by the collapsed vacuum bubbles in the molten pool, a perfect welding layer is formed on the surface of the parts.

During ultrasonic dip soldering, the heat generated by a separate energy source is used to melt the filler metal, and then ultrasonic vibration energy is added. The molten solder is used as the transmission medium for ultrasonic vibration. When high-frequency vibration energy is applied to molten welding, ultrasonic cavitation is generated on the surface of the welding tool to decompose and disperse surface oxides. The microbubbles of the cavitation burst, clean the surface of the weld, and allow the wet solder to bond with the pure metal.

Vibration also ensures that there are no gaps in the welding point, and the vibration energy forces the liquid solder into the cracks and micropores in the substrate. It helps to seal the parts and increase the surface area where the solder can bond. Ultrasonic vibration also squeezes bubbles out of the liquid solder, so this method makes the joint suitable for high vacuum environment applications that require an airtight seal.

Ultrasonic dip soldering allows for the soldering of dissimilar materials and can be used to solder materials that are difficult to solder using conventional methods. Because it does not require flux, users can save time and money cleaning flux residues while reducing corrosion and increasing the durability of soldered joints. Tin-lead solder is commonly used to solder easily wettable metals such as silver, copper, and nickel. Tin-silver solder is used for stainless steel, while tin-zinc and zinc-aluminum alloys are used for aluminum, and indium alloys are often used for glass and ceramics.

Handheld Dip Soldering In dip soldering, the parts or sections to be soldered are immersed in a bath of molten metal, and the ultrasonic sensor can be mounted on the bottom of the crucible or it can be directly in contact with the molten metal.