Laser welding It is a process of using laser radiation energy to achieve effective welding. Its working principle is:

specific way to excite laser-active media such as CO2 and other gas mixtures, YAG yttrium aluminum garnet crystals

body, etc.), so that it oscillates back and forth in the resonant cavity, thereby forming a beam of stimulated radiation, when the beam contacts the workpiece, its

The energy is absorbed by the workpiece, and welding can take place when the temperature reaches the melting point of the material.

Laser welding can be divided into thermal conduction welding and deep penetration welding , the heat of thermal conduction welding is expanded to the inside of the workpiece through heat transfer

Dispersion, only the melting phenomenon occurs on the surface of the weld, the inside of the workpiece is not completely penetrated, and basically no vaporization occurs.

For welding of thin-walled materials at low speed; deep penetration welding not only completely penetrates the material, but also vaporizes the material to form a large amount of plasma

Due to the large heat, a keyhole phenomenon will appear at the front of the molten pool. Deep penetration welding can completely penetrate the workpiece, and the input energy

Large quantity and fast welding speed, it is the most widely used laser welding mode at present. Benefits of Laser Welding:

① The use of laser welding can obtain high-quality joint strength and large aspect ratio, and the welding speed is relatively fast.

② Since laser welding does not require a vacuum environment, remote control and automatic production can be realized through lenses and optical fibers.

Produce.

③ The laser has a large power density, which has a good welding effect on difficult-to-weld materials such as titanium and quartz, and can

Welding of materials with the same properties.

④ Micro welding is possible. After the laser beam is focused, a small spot can be obtained, and it can be precisely positioned, which can be applied to large

In the assembly welding of micro and small workpieces produced by batch automation

Laser soldering It belongs to the tin welding technology in laser welding, which uses the laser as the heat source to heat the pad, melt the tin wire or

The solder paste is used to complete the laser welding technology of solder. The main feature of laser soldering is to use the high energy of the laser to achieve

The process of rapidly heating local or small areas to complete the soldering process, suitable for camera modules, VCM voice coil motors,

CCM, FPC, connectors, antennas, sensors, inductors, hard disk heads, speakers, speakers, optical communication components

Parts, thermal components, photosensitive components and other products that are difficult to solder by traditional methods!

Jinyan Laser recently repaired workpieces:

Before flange surfacing

After flange surfacing

Turbocharger rotor before sandblasting

Turbocharger rotor after sandblasting