Metal

Laser marking & engraving of aluminum, steel, stainless steel and many more

laser engraving control panel

What our customers are saying

"After Trotec Laser spent many hours consulting with us to choose the correct machinery for our needs we made the decision to purchase a SpeedMarker 1300 from Trotec Laser Australia to laser mark a range of our products with custom logos, graphics and customer details. During the testing and consulting phase; all the way up to delivery, the sales staff were extremely professional and knowledgeable in our application. After commissioning the machine, whenever there were questions or alterations to the automated process that needed attention, the support staff were able to handle these queries within hours. These are some of the reasons why we believe we made the correct decision to partner with Trotec Laser for our laser purchase. "
- Bill Sims - Davcor Group -
"The Trotec laser we purchased has proven faultless over years of continuous use. We highly recommend Trotec lasers as they are highly customisable and are definitely worth considering. Our Trotec laser delivers consistent high quality marking and the software is extremely user friendly making setting up jobs fast and easy. Trotec are a leading brand and show great interest in providing a quality product and service."
- Shane Borderick - director of Netec Industries Pty. Ltd. -
"I decided to purchase a Trotec laser because I knew they were the best machine available. Our Trotec allows us to engrave metals such as stainless steel and brass and I would absolutely recommend a Trotec laser because they are the best laser machine on the market with the best technology."
- Ron Adams - owner of Ballarat Trophies -

Lasers have been used for many years to mark and engrave metal to achieve great results. Both soft metals like aluminum and hard metals like steel or hard alloys can be marked accurately, highly legibly and quickly using a laser engraving machine. Consistent, high quality results are guaranteed by using lasers for metal marking needs. Corrosion resistant markings by annealing on steel alloys offer many advantages for applications in business sectors such as medical technology and the automobile industry. Depending on your requirements metals can be engraved or marked.

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Methods of laser marking metal

Polishing

Polishing leaves a white mark on stainless steel and other metals. It is considered a "lighter" way of engraving.

During this process the energy of the laser is reduced, meaning less material will be vaporised. The result is less ablation on a steel-like material and a brighter marking. Regarding the parameters this could mean less power and higher speeds that result in less energy per distance and higher frequencies that result in less pulse energy.

Polishing is possible on all metals.

Engraving

Engraving leaves a tangible mark on stainless steel and other metals. It leads to an ablation of the material on steel parts. The material vaporises and the colour changes.

To achieve ablation, high powers and relatively slow and medium marking speeds are required. The lower the frequency, the higher the possible pulse energy. As a result the lowest possible frequency should be chosen for engraving. The brown colour that is left by the burned metal can be cleaned (see Polishing).

Due to the very high energy of the laser, materials like steel, titanium and other metals can be engraved directly.

Annealing

Annealing leaves no tangible mark on stainless steel and other metals. During the annealing process, no material is taken away, meaning there is no ablation. Instead a colour change occurs through the heating of the metal. (E.g: Stainless steel changes colour when it reaches temperatures between 200 and 300°C). Varying colours can be achieved with different temperatures.

To anneal metal, it is important to only heat it instead of vaporising it. This can be achieved by reducing the energy density of the laser impact on the steel. To do this, un-focus the laser beam to increase the spot size, as the same energy on a much bigger surface will reduce the energy density. Heating up metal takes time; slow marking speeds should be used.

Annealing is also possible on any alloys which contain iron.


Suitable types of metal for laser marking

Suitable types of metal for laser marking and engraving

  • Stainless steel
  • hardened metals
  • alloy steels
  • high-speed steels
  • aluminum
  • anodized aluminum
  • titanium, titanium alloys
  • hard metals
  • brass
  • copper
  • precious metals
  • coated metals
anti friction bearing laser marking

Why should I buy a laser for laser marking metal?

Laser marking metal is an extremely precise and clean way to process metals with non-contact, permanent markings.

  • Labels such as serial numbers, data matrix codes and logos can be applied to products and components with a high-resolution finish.
  • Metal marking or engraving is created by the laser using a non-contact process that requires no pre- or post-processing.
  • Markings produced by annealing serve as durable, acid, chemical and corrosion resistant labels that do not damage the metal surface.

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You want to learn more about Trotec lasers and applications?

Our laser experts are happy to answer your questions about our products and laser processing. They will help you discover all the possibilities of lasers. One solution, thousands of possibilities. Additionally we invite you to see our lasers and applications at one of our demonstration facilities.

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Applications for metal marking

Laser application in marking metals are typicaly used for marking products with traceability features and codes. These applications can be found in the electronics and electrical industry, mechanical engineering and tool manufacturing, in sheet metal processing, medical technology, promotional materials, jewelry and in the automotive industry.

Application examples

  • Product labeling as an anti-counterfeiting measure
  • Functional labels such as size, diameter, etc.
  • Production information, such as date of manufacture, batch number, serial number, etc.
  • Traceability codes
  • Data Matrix codes for quality assurance
  • Customization of promotional and gift items made of metals
  • Dataplates

Trotec Product Recommendations for Laser Marking