What are the prospects for high-power laser cleaning applications?

Where does China’s fiber laser market go in the Sino-US trade war? What is the current strength of domestic fiber laser manufacturers? Can import substitution be achieved?

Taking the current prospect of laser application as laser cleaning as an example, until 2015, domestic and foreign laser cleaning applications were mainly solid-state lasers. In 2016, imported laser manufacturers introduced high-frequency fiber lasers that can be used for laser cleaning. Widespread concern. Ruike Laser, a domestic fiber laser manufacturer, has launched 500W pulsed fiber lasers this year since the launch of 100W, 200W and 300W pulsed fiber lasers in the previous two years. Through its cleaning cases, let’s take a look at how the “domestic products” perform.

First, the principle of laser cleaning

Due to different laser cleaning materials, process characteristics, and the laser wavelength, energy density, and cleaning method used, the laser cleaning mechanism is also different. The laser has the characteristics of high intensity, high energy density, strong focusing, and good directivity. The lens combination can focus the light beam and focus the light beam into a small area.



500W high-power pulsed fiber laser launched by Ruike Laser, product features

① Laser integrated design, electro-optical conversion efficiency up to 30%;

② Enclosed overall structure guarantees excellent pulse power and energy stability, while optimizing beam quality;

③ The laser function parameters are adjusted to digital display design, easy to operate, universal control interface and strong compatibility;

④ High uniformity of beam, good processing effect on bottom surface, easy to use and maintain.

Laser cleaning spot pattern homogenization effect changes

Different laser spot output modes determine:

1.Surface damage


2. Cleaning efficiency

Equipment optical parameters


Research on laser cleaning process

500W high-power pulsed laser from Ruike in cleaning of composite board

Test parameters: The 500W high-power pulsed fiber laser is equipped with a special laser cleaning head. At different frequencies and scanning speeds, by controlling the travel speed of the laser cleaning head, the layout of the light spot is as shown below to complete accurate and efficient cleaning.


Cleaning coating thickness is 111.5 μm

Section effect diagram after cleaning, no heat effect, flat section, no damage to the substrate

Comparison of micro topography and element distribution

Roughness comparison


Conclusion analysis:

1. The content of most elements reaches stainless steel standards;

2. The proportion of iron is increasing, indicating that the oxide layer has been removed significantly;

3. The hardness index rises to meet the requirements; HR = 35HRC;

4. Roughness consistency is good;

Application in other industries

Wheelset cleaning (Figure 1), mold degreasing (Figure 2), rotor blade derusting (Figure 3), high-speed rail derusting (Figure 4), gear descaling (Figure 5 and Figure 6). (Picture from the network)


Laser cleaning has a wide range of applications. As a manufacturing country, laser cleaning / rust removal has great development potential in industrial applications. The occurrence of the Sino-U.S. Trade war has made domestic fiber laser manufacturers shoulder greater responsibilities, and made more and more domestic fiber laser manufacturers realize that only by insisting on innovation and leading products can they strengthen their core competitiveness and Only by owning the core technology can the opportunities of China-US trade war outweigh the challenges. Since the establishment of Ruike Laser, it has determined the development direction of strong technology and independent controllability, and has begun to implement vertical integration of the entire industrial chain. Core components such as chips and optical fibers have mastered key technologies through independent research and development and industrial mergers and acquisitions. Large-scale production. Under the general trend of domestic substitution, more and more companies have chosen domestic laser equipment that is self-produced and self-developed and cost-controllable.