Myths about laser metal cutting

24.06.2022

In this article, we will try to sort out common myths about laser cutting of metal. Many manufacturers underestimate the possibilities of laser cutting due to misconceptions floating around the Internet.

Myth #1. The laser deforms the raw material at the cut point.

When laser cutting, there is a large temperature effect on the metal. But due to the fact that the laser beam acts on a very small area, pointwise, the metal does not have time to catch fire or deform at the insertion point, it only melts. The jet of gas, which always passes in the cutting zone, blows out all the metal residues formed and leaves perfect holes.

Therefore, plastic and wooden products are not damaged by burning after laser cutting. But we do not work with these materials, so we will not go into details. But we do everything that is connected with metalworking perfectly!

Myth #2. Laser cutting is not applicable to transparent materials.

The laser does not cut transparent materials – this is a myth. It is difficult for a laser to cope with transparent materials, but it is possible. When cutting glass or transparent plastic, the laser beam does not pass completely, it is reflected, part passes through, and another part affects the material. In order to cut a transparent material on a laser machine, you need to take into account its properties – the amount of light transmitted. To cut such materials, you need a powerful machine so that, taking into account all the losses, it has enough power to cut the material.

Myth #3. The laser machine is suitable for metal of any thickness.

Any machine has its own power limit. When you need laser cutting of metal 20 mm or more, then you should think about it, can it be more profitable to carry out such work on a plasma machine? And if the thickness of the metal is already 40 millimeters, then plasma is definitely the best choice.

The thicker the metal, the more powerful the laser needs to be, which in turn greatly increases energy costs, which affects the cost of cutting.

Myth #4. Laser cutting of metals competes with plasma cutting.

Laser metal cutting just like plasma cutting is suitable for cutting steel of different thicknesses . But it is not always advisable to use both methods.

The laser cuts the metal as accurately and efficiently as possible, there are no deformations on the finished product, and it is immediately ready for further processing. The cost of the laser is optimal when cutting metal up to 20 mm, everything that is more than this thickness will affect the price of cutting.

Plasma also gets more expensive depending on the thickness of the metal, it does an excellent job with metal up to 150 millimeters. But the quality of the manufactured parts at the output is worse than with a laser and requires post-processing.

Myth #5. Metal laser cutting services require a large number of specialists.

When cutting metal on non-CNC machines, the human factor cannot be excluded. On the laser machines of our company, a person only sets the program for cutting and feeds the metal.

Due to the fact that all inserts, cuts for your products are performed exclusively by a robot, any errors and inaccuracies are excluded. Accordingly, laser cutting of metals does not require a large number of qualified personnel. For the smooth operation of the machine, only 2 people are needed: the operator-designer – loads programs into the equipment and controls the process and the person who will lay the sheet metal and get the finished products.

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