Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser welding can be achieved by continuous or pulsed laser beams. The principle of laser welding can be divided into heat conduction welding and laser deep penetration welding. Laser welding is one of the important aspects of the application of laser material processing technology.

Laser welding is widely used in the electronics industry, especially in the microelectronics industry. Due to the small heat-affected zone, rapid heating concentration and low thermal stress of laser welding, it is showing unique advantages in the packaging of integrated circuits and semiconductor device casings. Mobile phones have already become an indispensable personal item in people's daily life. Mobile phone chips usually refer to chips used in mobile phone communication functions, including baseband, processor, coprocessor, RF, touch screen controller chip, Memory, processor, wireless IC and power management IC, etc. Since the bonding pad of the chip is very small, a precision welding machine with a very good welding effect is used to weld the chip and other parts in the mobile phone together.

So, what are the welding processes that laser welding machines are used in the field of mobile phones?

Analysis of welding process of fiber laser welding machine applied in mobile phone field:

The laser welding machine uses high-energy laser pulses to locally heat the material in a small area. The energy of the laser radiation diffuses to the inside of the material through heat conduction, and the material is melted to form a specific molten pool to achieve the purpose of welding. Laser welding has a small heat-affected zone, small deformation, fast welding speed, smooth and beautiful weld seam, and is suitable for welding various parts of mobile phones.

The internal structure of the mobile phone is fine. When welding is used for connection, the area of the welding point is required to be small. It is difficult for ordinary welding and traditional welding to meet this requirement. Therefore, laser welding is mostly used for welding between the main parts of mobile phones.

1. The handheld laser welding machine is applied to the welding of the outer frame of the middle frame of the mobile phone and the shrapnel

The welding application of the outer frame of the middle frame of the mobile phone and the shrapnel needs to connect the aluminum alloy middle frame with other material structural parts of the middle plate of the mobile phone. The metal shrapnel is welded on the conductive position by laser welding, which plays the role of anti-oxidation and anti-corrosion.

2. The laser welding machine is applied to the welding of mobile phone USB data lines

Laser welding is used in mobile phone USB data cable power adapters. USB data cables and power adapters play an important role in our lives. Manufacturers of electronic data cables use laser welding technology to produce and weld them.

3. Laser welding machine is applied to the welding of mobile phone metal parts

There are a lot of metal parts inside the mobile phone. Common mobile phone parts laser welding includes resistor capacitors, stainless steel nuts, camera modules, radio frequency antennas, etc. The laser welding machine does not need tool contact during the welding process of the mobile phone camera, avoiding the contact between the tool and the device surface The surface damage of the device is caused, and the processing accuracy is higher, which can be perfectly applied to the processing of various metal parts in the mobile phone.

4. Laser welding machine is applied to the welding of mobile phone chips and PCB boards

With the development of mobile phones in the light and thin direction, the traditional welding method is no longer suitable for welding the internal parts of the mobile phone. The chip of the mobile phone communication function, the PCB board is the support of the electronic components and the provider of the electrical connection of the electronic components. Laser welding has good efficiency, high quality and long service life, and can realize automatic production.