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

27471 Comments

Anonymous

CharlesThymn (not verified)

on

Sat, 04/19/2025 - 11:56

canadian pharmacy store <a href=" http://www.carshowsociety.com/forum.php?action=profile;u=22536 ">canadian mail order pharmacy</a> or <a href=" https://clients1.google.com.sb/url?q=https://usacanadapharm.com ">reliable canadian pharmacy</a>
http://mejtoft.se/research/?page=redirect&link=https://usacanadapharm.com:: canadianpharmacymeds
[url=http://cse.google.pl/url?q=https://usacanadapharm.com]global pharmacy canada[/url] canadian pharmacy oxycodone and [url=https://bbs.hy2001.com/home.php?mod=space&uid=69421]legitimate canadian pharmacy[/url] escrow pharmacy canada

Anonymous

JefferyTok (not verified)

on

Sat, 04/19/2025 - 13:15

Кружева сувениры оптом и интересная сувенирная продукция в Грозном. Вязаные шарфы оптом и купить рубашки с логотипами в Махачкале. Сувениры из Екатеринбурга где купить и изготовление сувенирной продукции в уфе в Суздале. Что подарить для дачи мужчине На день рождения и что подарить мужу На день рождения 45 в Мурманске. Продажа сувениров оптом в спб и сувениры На стол: <a href=http://reveal.ru/gate.html?name=Journal&file=display&jid=38681>худи с принтом на заказ</a>

Anonymous

доставка алкого... (not verified)

on

Sat, 04/19/2025 - 15:43

О, это просто спасение! [url=https://alcodostavkashop88.ru/]алкоголь круглосуточно рядом со мной купить[/url] — набрала в поиске, и первая ссылка была alcodostavkashop88.ru. Привезли быстро, выбор отличный. Не нужно краситься, ехать — просто заказала и ждёшь. Всё по-человечески, очень удобно.

Anonymous

MichaelAmoub (not verified)

on

Sat, 04/19/2025 - 16:35

Транспортировка тела умершего человека — ответственная и деликатная услуга, требующая точности, юридической грамотности и опыта. Мы организуем перевозку тел умерших или праха по России и за рубеж с оформлением всех необходимых документов, предоставлением герметичных контейнеров и соблюдением санитарных норм. Наши сотрудники контролируют весь маршрут и обеспечивают надёжность транспортировки, чтобы вы могли сосредоточиться на прощании. Работаем с транспортной логистикой 24/7: <a href=https://pohoronnoe-agentstvo.ru/perevozka-gruza-200-transportirovka-tela...транспортировка тела умершего человека</a>

Anonymous

Nathanspurn (not verified)

on

Sat, 04/19/2025 - 20:31

pharmacy wholesalers canada <a href=" http://lsdsng.com/user/718212 ">medication canadian pharmacy</a> or <a href=" https://clients1.google.co.id/url?q=https://usacanadapharm.shop ">best rated canadian pharmacy</a>
https://cse.google.co.id/url?sa=t&url=https://usacanadapharm.shop canadian drugs
[url=https://www.google.st/url?q=https://usacanadapharm.shop]canadian drugs online[/url] canadian pharmacy no scripts and [url=http://asresin.cn/home.php?mod=space&uid=84776]safe online pharmacies in canada[/url] canada drugs online

Anonymous

Lewislaumn (not verified)

on

Sat, 04/19/2025 - 21:16

Today, I went to the beachfront with my kids. I found a sea shell and gave it to my 4 year old daughter and said "You can hear the ocean if you put this to your ear." She placed the shell to her ear and screamed. There was a hermit crab inside and it pinched her ear. She never wants to go back! LoL I know this is completely off topic but I had to tell someone!
https://jn.com.ua/fog-light-lens.html

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.