How much do you know about the carbon dioxide laser cutting machine and its speed and cutting effect? Let Xiaobian take you to understand it!
The carbon dioxide laser tube is frozen in winter. If the water in the laser tube is not drained clean, it will cause the cooling layer of the laser tube to freeze and expand, which will cause the laser cooling layer to crack. As a result, the laser tube cannot work properly. Freezing crack of laser tube cooling layer is not within the scope of replacement. In order to avoid unnecessary losses, please do the following antifreeze measures:
1. Cut off all power to the device
2. Unplug the water pipe of the laser machine outlet, and drain the water inside the machine and the laser pipe.
3. Use air (air pressure less than 0.4MP) connected to the water inlet of the laser machine to completely clean the water inside the laser machine's pipes and laser tubes.
4. Remove the chiller or water pump and place it in a high temperature room to prevent the water circulation equipment from freezing, which will cause unnecessary trouble for the chiller water pump parts damage; or completely drain the water in the chiller or water pump clean.
5. But if you want to ensure that the equipment is not damaged, please also ensure that the ambient temperature reaches the standard (15 ° C to 35 ° C) specified in the equipment manual.
Note: It is best not to add antifreeze in the carbon dioxide laser tube. Antifreeze will affect the light quality, heat dissipation, poor heat dissipation, and power and service life may be affected.
Laser cutting machine cutting speed and cutting effect
Laser cutting has no burrs, wrinkles and high precision. For many electromechanical manufacturing industries, modern computer-controlled laser cutting systems controlled by computer programs can easily cut workpieces of different shapes and sizes, which is often preferred over punching and molding processes; although the processing speed of laser cutting machines is still slow For die punching, but it has no mold consumption, no need to repair the mold, and saves mold replacement time, which saves processing costs and reduces production costs, so it is more cost-effective as a whole.
In the metal processing industry where industrial manufacturing systems take a large part, many metal materials, regardless of their hardness, can be cut without distortion by optical fiber cutting machines. However, for highly reflective materials, such as gold, silver, copper, and aluminum alloys, laser cutting is difficult or even impossible because they are also good heat transfer conductors.
During the laser cutting process, an auxiliary vapor suitable for the material to be cut is added. When steel is used for cutting, oxygen is used as an auxiliary vapor to generate an exothermic chemical reaction with molten metal. It also helps to blow away the slag in the cutting slot. Compressed air is used to cut plastics such as polypropylene, and inert vapor is used to cut flammable materials such as cotton and paper. The auxiliary vapor entering the nozzle can also cool the focusing lens, preventing smoke and dust from entering the lens holder to contaminate the lens and cause the lens to overheat. The selection of the cutting speed of the laser cutting machine is also very important. The optimal cutting speed range can be selected according to the equipment description or determined by experiments. Due to the thickness of the material, different materials, high and low melting points, thermal conductivity and melting After factors such as surface tension, the cutting speed also changes accordingly.
Laser cutting machine a. A moderate increase in cutting speed can improve the quality of the incision, that is, the incision is slightly narrowed, the surface of the incision is more flat, and deformation can be reduced.
b. The cutting speed is too fast so that the linear energy of the cutting is lower than the required value. The jet in the slit cannot quickly blow away the molten cutting melt immediately to form a large back drag. Surface quality is degraded.
c. When the cutting speed is too low, because the cutting place is the anode of the plasma arc, in order to maintain the stability of the arc itself, the anode spot or the anode area must find a place of conducting current near the slit closest to the arc, and at the same time it will flow to the jet. More heat is transmitted in the radial direction, so the incision is widened. The molten material on both sides of the incision gathers and solidifies at the bottom edge, forming slag that is not easy to clean, and the upper edge of the incision is rounded due to excessive heating and melting.
d. When the speed is extremely low, the arc may even extinguish because the cut is too wide. It can be seen that good cutting quality and cutting speed are inseparable.
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