Like ordinary light, laser has biological effects (cooking effect, light effect, pressure effect and electromagnetic field effect). While this biological effect brings benefits to human beings, if there is no protection or poor protection, it will also be harmful to eyes and skin. As well as direct or indirect damage to human tissues such as the nervous system. In order to ensure the safety and protection of laser welding, laser hazards must be strictly controlled, and engineering control, personal protection and safety management must be done well.
1. Engineering control
Engineering control refers to the safety measures taken on the structure of the laser or laser processing system, mainly including: protective cover - to prevent workers from receiving more than the maximum allowable exposure; Automatic device to avoid radiation when the protective cover is removed; safety light path - to close the light path where irradiation may cause combustion or secondary radiation; key switch - generally means that the laser turns when the key is removed; beam termination - for the purpose of Beam terminators or attenuators can be used to keep the laser beam from overrunning the controlled machining area.
2. Personal protection
It mainly refers to wearing fire-resistant and heat-resistant laser protective clothing, wearing laser protective glasses that can selectively attenuate specific laser wavelengths, wearing laser protective masks for ultraviolet laser sources, and wearing protective equipment that can avoid damage caused by direct or scattered laser light. Laser protective gloves.
3. Safety management
Safety management mainly includes setting up specialized agencies or personnel, clarifying responsibilities and rights, including safety training and medical supervision.
Note: The maintenance of laser machine must be carried out by specially trained personnel, otherwise it is easy to cause serious man-made damage.
1) In order to ensure that the laser has been in a normal working state, after two weeks of continuous operation or when it is stopped for a period of time, the components in the optical path such as the YAG rod, the dielectric diaphragm and the lens protection glass should be checked before starting the machine. There are no abnormal phenomena such as dust pollution and mildew in each optical component. If the above phenomenon occurs, it should be dealt with in time to ensure that each optical component will not be damaged under strong laser irradiation.
2) The purity of the cooling water is the key to ensuring the laser output efficiency and the life of the laser concentrating cavity components. During using, the conductivity of the inner circulating water should be checked once a week to ensure that the conductivity is 30.5MW·cm. For circulating deionized water, the conductivity of newly injected pure water must be 32 MW·cm. Pay attention to the color change of the ion exchange column in the cooling system at any time. Once it is found that the color of the resin in the exchange column becomes dark brown or even black, the resin should be replaced immediately.
3) Equipment operators can often use black image paper to check the laser output spot. Once the uneven spot or energy drop is found, the resonator of the laser should be adjusted in time to ensure the beam quality of the laser output. The typical spot image is as follows: Adjustment of the adjusted spot and unadjusted spot laser resonator.
Fiber laser cutting machine is a very important product of modern social civilization. It is widely used in major industries in the construction of the motherland. The question is, what power is the fiber laser cutting machine divided into and how to use these power machines, it is up to us Prato Laser is here to talk to everyone.
2000-4000W Fiber Laser Cutting Machine
This power fiber laser cutting machine is mainly used to cut full-size stainless steel, carbon steel and other materials within 25mm, and the speed of cutting thin plates is very fast when aluminum plates within 4mm and acrylic plates within 60mm, wood material plates, PVC plates.
Main market positioning: 6-25mm medium and heavy plate cutting, mainly for large and medium-sized enterprises and some laser cutting and processing enterprises purely for external processing.
Fiber laser cutting machine below 850W
This power fiber laser cutting machine has low price and good stability, but relatively low energy efficiency. It is mainly used for drilling, spot welding and thin plate cutting.
As long as the market positioning: cutting below 8mm, it is mainly aimed at self-use small and medium-sized enterprises and most users in sheet metal manufacturing, home appliance manufacturing, kitchenware manufacturing, decoration, advertising and other industries, and gradually replace wire cutting, CNC punching, water Cutting, low-power plasma and other traditional industrial equipment.
16000W high power fiber laser cutting machine
Highly reflective materials such as thicker brass and aluminum can be cut.
Main market positioning: cutting below 25mm, especially high-quality cutting of medium and heavy plates, mainly for external processing, or enterprises that process more non-ferrous metals.
Fiber Metal Laser Cutting Machine Above 4000W
High photoelectric conversion rate, low power consumption, can cut stainless steel plates and carbon steel plates within 20-30MM, with small slits and good spot quality, which can be used for fine, stable and efficient cutting. It is mainly aimed at manufacturers who require extremely high machining accuracy and efficiency.
After 2015, with the emergence of Prato 4000W and above lasers, fiber laser cutting machines have replaced most of the cutting machine markets such as CO2 high-power laser cutting machines, YAG laser cutting machines, and disc laser cutting machines. Fiber laser cutting machines are developing towards a more refined, industrialized, and in-depth customization and supporting development. In this regard, our Prato Laser will also move forward with the progress of fiber laser cutting machines.