Colored annealing keyring with MOPA-Laser

Learn in this tutorial how you can create colored annealing on stainless steel with a MOPA laser.

Colored annealing keyring with MOPA-Laser

Learn in this tutorial how you can create colored annealing on stainless steel with a MOPA laser.

In this tutorial we show you how to create coloured laser markings on stainless steel using a MOPA laser source.

Preparation

Material required

Stainless steel key ring

Laser machine used

SpeedMarker 700
20 watt MOPA
f254 lens

For this tutorial you can use any SpeedMarker series, Speedy fiber or Speedy flexx laser machine. Please note that MOPA laser sources are only available for SpeedMarker laser machine.

Important information

Depending on the alloy, the laser marking results on your chosen stainless steel may differ from those shown in this tutorial.
To achieve different colours, the pulse width has to be changed. This means that you can only achieve black laser marking results using a standard fiber laser source.

graphic-files-keyring.zip

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Step by step

Step 1

Step 1: Design

You can create your own design or import our template. Start by importing the PDF with layers into the SpeedMark laser software and assign parameters and fillings to the object.

Tip:

Define the parameters in advance.

Filling for	Fill style	Line distance [mm]	Additional
Text	cross lines (bidirectional)	0.003	-
Letters	Bidirectional	0.03	-
Lines	Bidirectional	0.001	-
Dots	Bidirectional	0.001	Optimise filling
Wind rose	Bidirectional	0.001	Optimise filling
Border	None	-	-

Step 2

Step 2: Laser process

The next ste[ is to enter the parameter settings. These will differ depending in the laser machine you use and its available laser power.

Position the work piece with the help of border marking.

Laser parameter	Process	Power [%]	Frequency [kHz]
Text	Marking	50	150
Letters	Marking	60	60
Lines	Marking	60	189
Dots	Marking	84	261
Wind rose	Marking	54	260
Border	Positioning	-	-

Speed [mm/s]	Pulse width [ns]	Passes
1000	200	1
2000	200	2
2000	8	1
2000	100	1
2000	100	1
-	-	-

Step 3

Step 3: Post processing

As the annealing method of laser marking leaves the material surface unchanged there is no post processing required in this tutorial.

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Questions about applications or settings?
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