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Join Date: Sep 2007
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Yag Laser parameters

09/19/2007 1:17 PM

Hi !

I have a YAG laser and want to play with the different wave mode available.

Does anybody have guideline about wave mode vs cutting (type of material, speed, thickness, etc...) ?

Thanks

Roby

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Guru

Join Date: Jul 2006
Location: Silicon Valley
Posts: 5356
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#1

Re: Yag Laser parameters

09/22/2007 9:16 AM

Are you talking about the TEM? Like TEM 00 and such? If so, TEM 00 should give you the best bang for your input power. Are you able to adjust this on your system?

Also, what happens to the material is probably more a function of the power you're putting into the work piece. How many Watts is your YAG?

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Participant

Join Date: Sep 2007
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#2
In reply to #1

Re: Yag Laser parameters

09/25/2007 12:03 PM

I have a Trumpf HL1003D laser use for tube cutting with a robot and auxiliary axis.

It's possible to configure de signal to have :

- continuous, repetitive pulse, etc, so i want to know if there is some application guideline for that kind of waveform.

Out of this, i already use the power and oxygen rating to ajust the process.

The biggest problem i have is when a have complex cutting shape. The heat build-up into the part and it's difficult to have clean cutting. The head height is controlled by a independant axis on a Precitec head.

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Guru

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#3
In reply to #2

Re: Yag Laser parameters

09/30/2007 4:48 AM

Sorry it took so long to get back to you.

OK, so what are you cutting and how deep of a cut are you making (what is the thickness of the material)?

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#4
In reply to #3

Re: Yag Laser parameters

09/30/2007 8:11 PM

It's o.k for the delay, i'm very busy too.

I cut some HSS steel and some stainless.

The thinkness is between 1.8 and 3.0 mm.

The tubes are round or square from 15 to 50 mm diameter.

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Guru

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#5
In reply to #4

Re: Yag Laser parameters

10/02/2007 12:04 AM

OK, sorry a few more questions...

  1. What size is your YAG laser? How many Watts (or Joules)?
  2. Can the laser actually be run in CW or does it run in quasi-CW?
  3. If using fiber to transport the beam to the work surface, what diameter fiber and what's its attenuation factor?

It's just that if the laser is powerful enough, I'm trying to get an idea of why the heat buildup. It should punch right through.

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