Three characteristics of 15000W ultra-high power fiber laser cutting machine laser
1. The signal transmission adopts the form of electricity-optical-electricity, the light-emitting part and the light-receiving part are not in contact, which can avoid the feedback and interference that the output end may produce to the input end;
2. Strong ability to suppress noise interference;
3. It has the advantages of durability, high reliability and fast speed. The response time is generally within a few, and the response time of high-speed optocouplers is even less than 10ns.
Therefore, when designing the system circuit of the ultra-high power fiber laser cutting machine, attention should be paid to the isolation of the input signal circuit and the single-chip microcomputer. Here, optoelectronic coupling is the most commonly used method.
In the metalworking industry, where industrial manufacturing systems play a significant role, many metal materials, regardless of their hardness, can be cut without distortion. Of course, for highly reflective materials such as gold, silver, copper and aluminum alloys, they are also good conductors of heat transfer, so laser cutters are difficult or even impossible to cut. Although the ultra-high-power fiber laser cutting machine technology has obvious and huge advantages, as a high-tech equipment, to use the ultra-high-power fiber laser cutting machine to achieve the ideal cutting effect, it is also necessary to master its processing technical parameters and operating procedures. Especially in the cutting process of metal laser cutting machine, it is necessary to choose the appropriate cutting speed, otherwise it may cause several bad cutting results, mainly as follows:
1. When the laser cutting speed is too fast, it will cause the following undesirable results:
Unable to cut, sparks spray;
Causes the cutting surface to present an oblique stripe, and the lower half is molten;
The whole section is thicker, but no melting stains are produced;
2. On the contrary, when the laser cutting speed is too slow, it will cause:
Causes over-melting, and the cutting surface is rough.
The slit becomes wider and the whole melts at the sharp corners.
affect cutting efficiency.
Therefore, in order to make the ultra-high-power fiber laser cutting machine equipment better perform its cutting function, it is possible to judge whether the feed speed is appropriate from the cutting spark of the laser equipment:
1. If the spark spreads from top to bottom, it means that the cutting speed is appropriate;
2. If the spark is inclined backward, it means that the feed speed is too fast;
3. If the sparks are non-diffused and few, but condensed together, it indicates that the speed is too slow.
Compared with other traditional cutting methods, laser cutting technology has incomparable obvious advantages. The laser cutting machine not only has the main characteristics of narrow slit and small deformation of the workpiece, but also has the characteristics of fast speed, high efficiency, low cost, safe operation and stable performance.
In recent years, with the rapid improvement and development of ultra-high-power lasers, its application in industry has developed from initially only used for the processing of small or fine structures to widely used for the processing of large structural parts, which has attracted more and more people's attention. It is concerned and recognized and widely used in machinery manufacturing, aerospace, automobile industry, powder metallurgy, biomedical microelectronics industry and other industrial fields. Among them, the laser welding of thin plates is mainly used in the aerospace industry and the automobile manufacturing industry.
