Does the laser cutting machine harm the human body? Generally speaking, there is no harm to the body, but it is impossible to say that there is absolutely no harm. Now there is a danger of being irradiated with a mobile phone, so there is a possibility of harm in doing any work, isn't it? Laser cutting machines are much more environmentally friendly than plasma cutting and flame cutting. Plasma cutting machines have a large amount of dust, smoke and strong light when cutting. This requires a matching dust removal device. The laser cutting machine produces less dust when it is cut, the light is not very strong, the noise is small, and it is environmentally friendly. Of course, the operator or customer who usually touches the laser cutting machine likes to stare at the cutting head. If you look at the spark generated by cutting for a long time, it is harmful to the eyes and has a tingling sensation. Generally, some laser cutting machine manufacturers will be equipped with corresponding eye protection glasses.
The laser cutting machine is highly intelligent and can be operated unmanned without having to stare at the cutting head, but reminds everyone to pay attention to the points: the laser is invisible, the laser beam is invisible to the naked eye, if the hood is opened during maintenance When you must pay attention. Don't accidentally touch the light path. It’s not fun to meet. The harmful elements (ZnSe) in the focusing mirror of the laser cutting machine should not be in contact with the lens frequently. The discarded lenses should be specially treated and not thrown away. I don't know what materials are processed by everyone. If it is carbon steel or stainless steel, it is not a big problem. If a large amount of aluminum alloy is processed, the cut dust will be suspended in the air and harmful to the human body after inhalation. There is also a strong reflection when cutting the aluminum plate, the cutting head needs a protection device, otherwise it is easy to malfunction. In short, the laser cutting machine can not say no harm to the human body, but it is much better than the flame cutting machine and the plasma cutting machine. As long as you pay attention to the defense, you can basically ignore it.
Quality and safety should not be neglected. Any negligence of work may cause potential safety hazards. It is necessary to abide by the necessary safety operating matters and ensure the safety of personal and company property. During laser processing, other radiation and poisonous and harmful gases may be produced due to the different processing objects; some lasers emit invisible infrared and ultraviolet light when working. Do not think that the laser has a breakdown and use eye inspection. When checking the laser, we must ensure that the laser is power off; when using the laser, we strongly recommend that you wear a good look. Laser protective glasses should be of wavelength to protect your eyes from laser threat; even if you wear laser protective glasses, you should not look directly at the laser emitter; when you work with laser, please remove all kinds of reflective things to avoid the damage caused by the light emitted into the eyes; when the device is on-line, it must have a dedicated guard, forbidding unauthorized departure. Personnel must cut off all power supply before leaving; it is strictly forbidden to place any irrelevant total reflection or diffuse reflection objects in the equipment in order to prevent laser from being emitted to human body or inflammable articles; the equipment should be far away from the electrical equipment sensitive to electromagnetic interference, which may cause electromagnetic interference to it.
Laser is widely used in medical and biotechnology industries. Optical tweezers, cell sorting, DNA sequencing. All these applications require laser beam shaping and adjustment. The beam analyzer directly detects the shape of the beam and detects whether the beam can reach the expected value. If not, it needs real-time adjustment. Calibrable beam analyzers are essential for maintaining and calibrating these medical laser systems. Laser applications in biotechnology are mainly scanned by genome and proteome detectors. The system uses laser beams to identify amino acids in proteins of DNA and RNA sequences. The better the spot quality, the smaller the sample size. Beam analyzer can help to fine-tune this kind of scanner.
High-power lasers have been widely used in cutting, welding, surface cladding and alloying, surface heat treatment, and new material preparation. The beam characteristics are one of the most important factors affecting laser processing quality. Because of the ability of lasers to emit precise power densities on workpieces, most high-power soldering and cutting lasers take advantage of this precision of lasers. In order to ensure the continuity of accuracy during use, it is very important to monitor the performance of the laser.
In practical applications of laser material processing, in order to achieve high energy density, the laser beam is focused. The better the beam quality, the smaller the focused focal spot is. When the focal spot of the same size is needed, the better the beam quality, the longer the focal length of the focusing mirror that can be used. The size and shape of the focal spot affects the width of the weld of the laser weld, and the depth of focus primarily affects the thickness of the material to be selected for the weld. When performing laser processing, it has an optimum focal length fopt and a best focus diameter dopt for a certain machining depth. How to match the optimal beam focusing system is important for determining the quality of the processing and whether the laser is in the best working condition. factor. The mode characteristics of the beam include beam quality, beam mode, and cross-sectional energy distribution of the beam. The beam mode determines the energy distribution of the focus focus and has an important impact on laser processing. The higher the order of the beam mode, the more the energy distribution of the laser beam is diverging and the worse the welding quality.
Laser beam quality is an important technical index of laser. It is the characteristic of the whole beam propagating in space. This parameter can be measured by several measuring techniques at several points of the propagation beam. The standard defines several measurement techniques, all of which are based on the use of CCD, knife edge and slit equipment for beam profile measurement. There are two main requirements for measurement: one is the measurement of focused beam, the other is the measurement of collimated laser. For the latter, the basic principle is to focus the incident laser beam through a lens, forming a waist position and a divergent beam on the opposite sides. Accurate measurements can be determined by multiple scanning and calculating the far-field divergence of beam waist and Rayleigh length at 0 focal point.