How Does Rust Cleaning Laser Machine Work - China

Rust cleaning laser machine is the latest high-tech product.

Revolutionary cleaning technology for industrial cleaning, easy to install, operate, and to be automated, plug in power, turn on and start cleaning-without using chemicals, media, dust and water, auto-focusing function enables precision positioning and 3D cleaning.

Laser rust removal mainly uses a laser beam to work on the workpiece with rust stains.

High-frequency high-energy laser pulses irradiate the surface of the workpiece, and the coating layer can instantly absorb the focused laser energy, so that the oil stains, rust spots or coatings on the surface can be instantly Evaporation or peeling, a cleaning method that effectively removes surface attachments or surface coatings at high speed, and laser pulses with very short action time will not damage the metal substrate under appropriate parameters.

1 - All Materials Have an Ablation Threshold

Laser ablation occurs when a material layer or a coating is removed with a laser beam.

This is the process behind all laser cleaning applications.

Take laser rust removal on steel.

When the beam hits the surface, 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.

A simple way to grasp the importance of the ablation threshold is to compare it to throwing a ball over a wall.

If you don’t throw it high enough, it will never make it over to the other side.

Even if you throw the ball a thousand times, you will always fail.

The same applies to laser derusting.

You can shoot the laser beam a thousand times but as long as the energy is below the ablation threshold of the material you’re working with, nothing will ever be removed.

Now, every material has different properties and thus different molecular bonds.

In other words, each material has a specific ablation threshold.

To successfully remove a layer from a given material, the energy transferred by the laser beam must be above the ablation threshold of that particular material.

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 one and that a ball was thrown with just enough energy to make it over the first wall, but not enough to make it over the second.

The ball would 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 never the second.

Since there is an ablation threshold for each material, rust cleaning laser machine can discriminate between two or more materials when trying to remove an undesired layer from an object.

Given a sufficiently large ablation threshold difference between the materials, it is possible to select a material to be removed (i.e., the one with the lower ablation threshold) while leaving the other material untouched.

For example, the rust ablation threshold is much lower than the threshold for common metals like steel and aluminum.

The same goes for paint and oil.

This vast gap between two values allows contaminants and coatings to be completely vaporized without any risk of damaging the base material underneath.

There’s just not enough energy for damage to happen.

3 - A Strong and Short Power Burst Means Faster Removal

You can think of laser ablation as similar to carving stone with a hammer and a chisel.

You can use a small hammer and do many small 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 with laser cleaning, except that you only want to remove a layer of material: the contaminant.

Company Contact:

• Posted By: igoldencnc2020

• Phone: +86-15688871861

• Address: Private Industrial Park, Yu Huang Miao Town, Shanghe, Ji’nan, Shandong, shandong , China

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• Website: https://www.igolden-cnc.com/

• Business Description: We are a company integrating manufacturing and sales of CNC routers, laser engraving machines, laser cutting machines, plasma cutting machines, cutting plotters, etc.
  
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