nanosecond laser pulse welding machine spot laser welder

Nanosecond welding information

01 Precise D/A conversion, effectively suppressing splashes

Precise D/A conversion, digital control of analog, make the temperature of the nugget rise continuously, and at the same time precise current rising slope and time control, will not cause heat jumps and splashes due to uncontrollable current rise time

02 High peak power, high aspect ratio can be obtained, and high reflective materials such as copper and aluminum can be processed

The optional range of fiber core diameter is 20um-50um. According to the power density formula, it can reach 10 times the power density of ordinary fiber, which greatly improves the feasibility of welding highly reflective materials.

03 Up to 30% electro-optical conversion efficiency, economical and environmentally friendly;

QCW lasers also belong to the category of fiber lasers, and the electro-optical conversion efficiency can be as high as 30%, which is much higher than that of traditional YAG fiber-conducted lasers.

04 Flexibility of beam shape

Features:

QCW fiber laser can choose single-mode or multi-mode output mode. For cutting very thin materials or applications requiring a small spot size, single mode would be the appropriate choice. However, most high-power applications will use top-hat or multimode mode (see illustration).

As a nanosecond fiber laser, it adopts MOPA structure, the highest frequency reaches 1000kHz, and the peak energy is extremely high. There are pulse mode and CW mode, various waveforms can be called, and the heat input can be precisely controlled. This model has great advantages in welding thin plate materials (below 0.2mm), highly reflective materials (copper alloy, aluminum alloy, gold), and dissimilar metal welding. The solder joints of the welded products are well formed, the size is uniform, and the tensile strength and shear strength are significantly improved compared with YAG and millisecond fiber lasers.

Nanosecond pulse fiber laser welding machine has the following advantages:

1. The beam quality of nanosecond pulsed fiber lasers is high. The core diameter of the optical fiber is in the order of several microns, which can greatly improve the beam quality of the laser, thereby meeting the high-quality requirements of industrial processing.

2. Good heat dissipation. The fiber laser is small in size, does not require a huge water cooling system, and only needs air cooling during high-power operation.

3. Small size. Optical fiber has good flexibility, which allows the laser to be designed to be quite small, compact, easy to integrate, and can work in relatively harsh environments such as high shock, strong vibration, high temperature, and large dust.

4. Good spectral characteristics. Different wavelengths of laser output can be achieved by changing gain fibers with different doping and matching fiber components.

Therefore, the application of nanosecond pulse fiber laser welding machine in plastic welding, wire welding, soldering utilization, metal welding and connection, dissimilar metal welding, etc. has shown many advantages

The advantages of nanosecond laser welding machine are as follows:

1. It is more suitable for thin plate welding, especially the welding of products with high reflectivity, such as copper foil

2. Can be used for welding of dissimilar materials, such as copper-stainless steel, etc.

3. Since nanoseconds are integrated by multiple tiny points, each tiny point has low energy and almost no spatter in welding.

4. The welding pool of nanoseconds has a zigzag shape and a uniform depth, and the pulling force is larger than that of the fiber pool.

Parameters:

Sample picture

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