How to Choose a Suitable Laser Cleaning Machine?
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We have classified the following points into two main categories based on process and machine parameters. Why is it necessary to consider these factors?? Because these factors determine the overall specification of a laser cleaner machine. A suitable laser cleaner machine will provide the best product solution and expected performance.
Laser Process Parameters
According to control theory, a process parameter is a process component&#;s measured value. Usually, the operator monitors or controls these process parameters based on different circumstances. The following parameters help you choose the best laser-cleaning machine.
Laser Power and Pulse Frequency
Laser machines can have two typical laser frequencies: continuous and pulsed. Continuous laser machines produce a constant flow of energy. It means that an uninterrupted laser frequency provides high-quality and effective laser beams. Continuous laser is famous for laser cutting and welding. This type of laser machine requires high energy consumption.
On the other hand, pulsed laser machines produce interrupted laser frequency at regular intervals. This laser power is famous for cleaning, marking, or etching. Therefore, it is essential to check the laser power type of the machine you are choosing.
Laser Safety
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Safety has always been the primary consideration for every laser cleaning machine. Typically, a laser machine requires a class-1 safety enclosure. It makes the work safe and reliable. Every laser machine manufacturer must meet the requirements of safety regulations worldwide. However, if you see the laser machine is already equipped with a class-1 laser safety enclosure, you won&#;t need any PPEs. In the case of a handheld laser cleaning machine, you should ensure the safety enclosure class. If it is class 4, then you may need additional PPE.
Cleaning Speed and Times
Some people may need clarification on cleaning and scanning speeds. A scanning speed refers to the Galvo scanners&#; working speed, producing a certain laser spot width. In this case, the laser cleaning speed is perpendicular to this laser spot. For example, In Hanten CNC, different laser types offer a cleaning speed between 0.5m2/h and 15m2/h.
Cleaning times are another essential factor that you should consider. Cleaning times refer to the number of operations required for the desired cleaning properties. At different laser cleaning speeds, the surface roughness also changes. You may need consecutive laser cleaning operations to get the desired state.
Fume Extraction
During laser cleaning, the process will produce lots of contaminants. In this case, laser cleaning standards require a vaporization process to convert the pollutants into dust or fumes. It is necessary to extract these contaminants from the working space. However, ensuring this feature protects workers and keeps the functional area clean and tidy.
First, check the fume extraction nozzle position. After that, check the safety measures of PLC automated communications. Lastly, check the filter and extraction units based on the type of dust or fumes produced.
Overlap Ratio and Energy Density
The overlap ratio is another fundamental part of laser cleaning. It is seen that overlap ratio and energy density change cleaning speed, pulse frequency, and power. Therefore, these two parameters change the total value of the surface roughness of the projected metal part.
Why is it necessary to consider this when choosing a suitable laser cleaning machine? Because it will tell you the productivity of the whole machine. You can check these properties from the lab test documents provided with the laser cleaning machine.
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