Laser solder paste: comprehensive analysis of working principle and application fields

Laser solder paste is a new type of high-tech laser soldering material that is widely used. Laser solder paste achieves high-precision control of circuit board soldering through laser heating in the electronic manufacturing process. This article will provide a detailed introduction to the working principle of laser solder paste and its applications in fields such as electronic manufacturing and automotive manufacturing.

Based on the principle of laser conversion of thermal energy, the working principle of laser solder paste is that when the laser beam is irradiated on the surface of the solder paste, the metal powder in the solder paste absorbs laser energy and rapidly heats up. When the temperature rises, the liquid tin on the surface of the solder paste quickly melts and fills the gap between the welding points through surface tension. Subsequently, the laser beam stopped illuminating, the temperature rapidly decreased, and the liquid tin solidified rapidly, forming a solid solder joint. Through precise laser heating control, laser solder paste achieves high-precision welding process. In the field of electronic manufacturing, laser solder paste has important application value.

Firstly, during the manufacturing process of printed circuit boards (PCBs), laser solder paste can achieve high-precision welding of small-sized solder joints. Compared with traditional welding methods, laser solder paste can achieve smaller welding spacing and higher welding density, improving the integration of electronic devices.

Secondly, laser solder paste can accurately solder microchip pins during the electronic component packaging process. In the field of microelectronic packaging, the application of laser solder paste greatly improves the reliability and stability of packaging. In addition, laser solder paste is also widely used in the field of automotive manufacturing. During the manufacturing process of automotive electronic control units (ECU), laser solder paste can achieve rapid welding of electronic components. Laser solder paste has the characteristics of being fast and precise, which can greatly improve the efficiency and quality of automotive electronic manufacturing.

At the same time, during the maintenance and replacement process of automotive electronic equipment, laser solder paste can also achieve precise repair of solder joints, improving the reliability and service life of the equipment. Laser solder paste can be applied in other fields besides electronic manufacturing and automotive manufacturing. For example, laser solder paste is also widely used in industries such as aerospace, communication equipment, and medical devices. Through high-precision laser heating control, laser solder paste can achieve precise connection of small solder joints, meeting the high requirements of various industries.

In short, laser solder paste, as an advanced welding material, has a wide range of applications. By using laser heating control, high-precision welding connections can be achieved, improving the efficiency and quality of electronic and automotive manufacturing. With the continuous development of science and technology, the application prospects of laser solder paste welding will be even broader.

Source: Sohu