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5 tips for CH laser cleaning machine works

Date:2019-07-24 08:59 Write:admin Click:

5 tips for CH LASER cleaning machine works

Designed from German company,CH laser cleaning machine has the process of removing contaminants, such as rust, oil, oxides, etc., on steel and other surfaces using laser technology. Laser cleaning is achieved through laser ablation. It allows the selective removal of the contaminants with little impact on the substrate.
Industrial cleaning, such as removing rust from old steel parts, can be a tedious process. Also the removal of paint and oil from metal parts can be annoying as well. These processes often involve chemical solvents specific to each material to be removed. It is sometime wiser to just replace the old part rather than try to give it a new life. However, this may come at a significant cost; laser cleaning has been touted as the eventual solution.

1. All materials have an ablation threshold
Laser ablation occurs when a layer of a material or a material which is deposited on a given surface is removed with the aid of a laser beam. This is actually the process behind laser rust removal on steel and other materials, Molecular bonds in the dust or rust layer are broken and ejected from the substrate. In less technical terms, you can imagine that the layer to be removed is simply vaporized by the laser beam.

2. It is possible to remove a material in a highly selective way

Let's continue with our analogy. Imagine there was a second, higher wall behind the first and that a ball is thrown with just enough energy to make it over the first wall, but the ball does not have enough energy to make it over the second wall. It will then bounce off the second wall and fall in between the two walls. Once again, no matter how many times you throw the ball, you will always get the same result. You will make it past the first wall, but not the second.
For example, the rust ablation threshold is much lower than the threshold for common metals such as aluminum or steel. The same goes for paint and oil thresholds compared to the thresholds for different metals. It is this vast gap between the two values that effectively allows rust to be completely vaporized without any risk of damage to the steel underneath. There's just not enough energy for damage to happen.

3. Strong and short power burst means faster removal

You can think of laser ablation as similar to a stone carver with a hammer and chisel, trying to carve a stone. You can use a small hammer, and do many little hits on your chisel. Or you could just as well use a bigger hammer to leverage more power, hence reducing the required number of hits and increasing the removal speed. The idea is the same for laser cleaning, except that you only want to remove a layer of material: the contaminant.
For a given surface area, putting the same energy in a much shorter pulse increases the power. It’s like using the bigger hammer. The pulsed laser methodology is more efficient and provide a faster removal speed than the continuous beam. While the pulsed laser beam do the cleaning faster, it also ensures that the underlying material (typically a metal) does not heat too much. See the graph above for an illustration of the differences between both processes.

4. It is consumable-free and environmentally friendly

As this method only uses a laser beam to vaporize the layer to be removed, there are literally no consumables with this cleaning technology. This is the beauty of a laser, which only needs a power plug to be set and ready to go.
On top of this, as no solvents or other chemical products are used, laser ablation is one of the safest solutions available when it comes to rust removal. Hence, there's no chemical waste to take care of. Also, there is no danger for employees while working with the laser machine as these machines are designed to meet safety standards.Workers won't need cumbersome personal protective gear and won't have to handle those pesky chemicals. Win-win.

5. Laser cleaning is of interest for various industrial processes

Removing the burnt rubber residue from tire molds; giving a new life to old pipelines; cleaning pipes in nuclear power plants; and even larger projects such as removing paint from a rusty bridge and doing surface preparation prior to welding are all projects that can benefit from laser cleaning technology. Thus, this technology can be used in a lot of different fields of application; the only constraint being the ability to discriminate ablation thresholds between the material to be removed and the one to be protected.
Since this topic is becoming more and more popular with industries today, stay tuned for more blog entries on the subject. Meanwhile, if you have any questions, you can always ask one of our experts. For more tails such as model photos, work videos,please directly mail to david@chlaser.com to get details now.