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Laser Marking

Author:editor Time:2024-04-16 Hits:

Laser  marking is one of the most diverse of laser processes, and it is hard  to imagine the production of consumer and industrial products without  it.


Functions of marking

Parts  and products need to be marked for many reasons, and the type of  information that is marked on the part varies. Here are some common  examples:

  • Functional signs and symbols, such as lines and numbers on a speedometer or wash cycles on a washing machine

  •  Manufacturer and product information, such as trademarks and names/models of parts or products 

  •  Markings required by law, such as expiration dates or material specifications 

  •  Personal tracking codes, such as serial numbers or customer data 

  •  Individual codes for logistics and logistics control within production plants 

  •  Center marks and marking lines for downstream manufacturing processes such as welding 

 Comparison of various marking processes 

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Laser marking process classification 

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 Laser engraving of QR codes on the curved surface of the tool 

 Annealed marking: Titanium surfaces remain perfectly smooth and colorful 

 Coloring and foaming: bitmap and Braille laser marking 

 Bubbling: the white bumps on the cover of this induction coil are formed by tiny air bubbles 


Laser Marking Systems 

1 Scanning Optical System 

The  scanning optics are equipped with 1-2 movable mirrors to deflect the  laser beam in the X- and Y-axis directions, which rapidly guide the beam  onto the workpiece at speeds of several meters per second.

2 Photomask Optical System 

 In photomask laser marking, the unfolded laser beam is directed through a stencil or photomask. 

3 Integrated marking systems 

In  automated processes that use laser marking to produce large quantities  of items, OEM lasers are integrated into the production system.

4 Marking Machines 

 Independently  operated marking machines are ideally suited for small to medium sized  production and processing of a wide range of parts. 

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 Sweeping optics: two movable mirrors to deflect the laser beam 

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 Photomask optics: projects a small photomask plate image 

 Integrated marking system 

 marking machine 


Future mark 

The  popularity of laser marking will continue to grow rapidly over the next  few years. Let's take a look at a few of the factors driving this  trend.

1 Marking of a large number of items 

 A large number of items need to be individually labeled. 

2 Control process 

In manufacturing, marking as a presumed control function will continue to make progress in process automation and optimization.

3 Traceability 

Tracking  requires marking each part with unique identifying information. Process  experts believe the use of lasers to mark individual parts will grow in  the future.

4 Combination process 

Laser marking is very fast and flexible and can be executed in compact workstations suitable for any combination of processes.

5 Challenge 

The  laser has one limitation: in many metal and plastic materials it is not  capable of producing the full range of colors. Another challenge: the  laser marking process, the parameters and the material must be perfectly  coordinated to achieve optimal results.

6 Summary 

Laser  marking is being used to perform a wide variety of tasks. Both lasers  and marking machines are becoming faster, more powerful and more  economical. At the same time, the demand for personal marking such as  machine-readable codes is growing, and with it the number of  applications. Flexibility, versatility, precision and speed - all the  advantages and characteristics of using lasers to process industrial  materials can be seen in laser marking applications.




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