Metal can be
engraved with laser engravers since they are incredibly adaptable devices. A
laser engraver for metal is your best choice if you want a device that can
easily handle light and heavy materials.
Softwoods,
acrylic, and other soft materials can all be cut with a laser engraver.
However, using a laser to engrave, brand, or etch metal presents new
difficulties.
A CO2 laser or
fiber laser engraver is typically the best option for swiftly and efficiently
engraving metal. However, and most people are unaware of this, there is a novel
way to use desktop laser engravers to mark metal (more on this further on).
We have had the
good fortune to test various laser engraving devices for all materials. Based
on our own experience and other research, we have compiled our list of the best laser engravers for metal.
As a laser
system producer, we know the requirements for effectively engraving metals.
Here are our top factors to think about before laser-marking metal.
1.
Choose the correct type of
laser
Based on their
gain medium, different lasers emit light at various wavelengths. Unlike CO2
lasers, which use CO2 gas as their gain medium, fiber lasers use optical fiber.
The wavelength influences how the metal absorbs energy; hence, it is
significant.
Metals often
respond well to fiber lasers because most absorb their wavelength efficiently.
Therefore, using a fiber laser to engrave these metals makes sense. Because
their wavelength is poorly absorbed, CO2 lasers are rarely a good option (they
are good at marking organic materials such as plastics and wood, though).
2.
Consider Post-Process
Treatments
Laser engraving
will take longer if the metal surface you are engraving has undergone
post-treatments during production. This is so that engravings on pieces made of
post-treated metal will remain legible.
The laser power
can be increased or a rotary table installed to engrave parts while other parts
are loaded to keep up with your cycle time.
To maintain
traceability during post-treatments, including shot blasting, e-coating, powder
coating, and heat treatments, Laserax has developed laser marking procedures
that make codes more robust.
3.
Minimize the Quantity of
Encoded Information
Data matrix
codes and QR codes are excellent for marking for traceability because barcode
readers can read them more accurately than serial numbers. Additionally, they
can fit more information into a smaller space.
These codes are
constructed from modules, or cells, of black and white that are organized in a
square or rectangular pattern.
An engraver 3D printer is a rare creature.
There are not many manufacturers who aim to become experts in many tool
techniques. Even fewer can combine them into a user-friendly package.
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