Removing bubbles from laser tube

kirill's picture
Submitted by kirill on Tue, 03/11/2014 - 10:53

Laser tubes should not be operated with air trapped within cooling piping as this can cause temperature hotspots and compromise integrity of the tube.

In ideal world, stream of water would remove all the bubbles but in our reci tube there are some welding spots where water becomes turbulent and traps pretty large air bubbles. This trapped air is very hard to remove.

To remove those you can:

Wait

If you wait long enough they will disolve themselves, but it can take hours!

Tilt

You can turn off chiller and tilt entire cutter, all you need to do is get bubbles moving couple of inches away from blocking spot. Obviously this method is only feasable if you have small cutter or someone really strong  (like Vladimir Putin) in your workshop.

Pump cycle

Turn pump on and off, quite often bubbles will move slightly from the deadlock place if you turn off the pump, catch this moment and turn pump again to remove the bubbles. This is quite tricky and does not work all the time.

Turbulences in water flow

Best way we found is to cause turbulences in water flow, all what needs to be done is to pinch and release incoming [from laser tube perspective] water hose once or twice, pinch will cause pump to build up pressure and when you release that pressure is going into the tube causing strong turbulences and removing bubbles. Our CW-5200 chiller pump is connected to coolant pipes using soft silicone joints, those can be easily pinched by hand.

Be careful when pinching, start gently, turbulences and overpressure caused by this are quite strong, if we pinch ours all the way we can almost feel cutter to vibrate on release. It can damage laser tube.

Rear of chiller
Rear of chiller

 

Tags: 
workshop
laser
water

27468 Comments

Anonymous

ThomasInots (not verified)

on

Sun, 03/09/2025 - 12:30

They bridge global healthcare gaps seamlessly.
[url=https://lisinoprilpharm24.top/#]buy lisinopril without insurance[/url]|[url=https://clomidpharm24.top/#]can i buy generic clomid prices[/url]|[url=https://cytotecpharm24.top/#]cytotec over the counter walgreens[/url]|[url=https://gabapentinpharm24.top/#]gabapentin extemporaneous preparation[/url]|[url=https://cipropharm24.top/#]can i buy cheap cipro without rx[/url]
What side effects can this medication cause?

Anonymous

ThomasInots (not verified)

on

Sun, 03/09/2025 - 21:00

They're reshaping international pharmaceutical care.
[url=https://lisinoprilpharm24.top/#]where can i buy cheap lisinopril for sale[/url]|[url=https://clomidpharm24.top/#]how can i get generic clomid online[/url]|[url=https://cytotecpharm24.top/#]get cheap cytotec online[/url]|[url=https://gabapentinpharm24.top/#]gabapentin ne icin kullanilir[/url]|[url=https://cipropharm24.top/#]cost of cheap cipro without prescription[/url]
Impressed with their wide range of international medications.

Anonymous

Crazimediz (not verified)

on

Sun, 03/09/2025 - 23:12

Подписчики часто спрашивают про залоговые займы. В своем Телеграм-канале подробно разбираю [url=https://zaim-lines.ru/]займ под залог ПТС Москва[/url]. Нашел несколько компаний с честными условиями и минимальными требованиями к авто. Особое внимание уделил скрытым комиссиям - читайте обзор!

Pages

Add your comment

More information about text formats

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.