Shop Floor Talk  

Go Back   Shop Floor Talk > Welding and Metalworking Forums > Welding

SFT Search:   
Reply
 
Thread Tools Display Modes
  #1  
Old 10-27-2020, 05:47 AM
Cavalry's Avatar
Cavalry Cavalry is offline
Below Wholesale
 
Join Date: Jul 2005
Location: Evil Empire State
Posts: 9,036
Default Why woud someone not use onboard gas valve on a TIG machine?

My new to me 250DX came with two torches, both with manual flow valves on the torch. The original gas port on the machine still has the factory shipping plug so I don't think it was a matter of the valve not working and they didn't want to fix it.
This makes no sense to me, why would someone want to go manual while there is a perfectly good postflow setup on the machine?


Along with that logic why would someone have two identical torch setups complete with regulators on one machine? Its not like it takes any amount of time to swap cups, tungsten etc.
__________________
Director of Cryptography-Upstate NY Division
Reply With Quote
  #2  
Old 10-27-2020, 11:23 AM
Shade Tree Welder's Avatar
Shade Tree Welder Shade Tree Welder is offline
Grumpy Bastard
 
Join Date: Jun 2004
Location: Kankakee County, IL
Posts: 20,576
Default

Quote:
Originally Posted by Cavalry View Post
My new to me 250DX came with two torches, both with manual flow valves on the torch. The original gas port on the machine still has the factory shipping plug so I don't think it was a matter of the valve not working and they didn't want to fix it.
This makes no sense to me, why would someone want to go manual while there is a perfectly good postflow setup on the machine?


Along with that logic why would someone have two identical torch setups complete with regulators on one machine? Its not like it takes any amount of time to swap cups, tungsten etc.
Who knows...

Albert Einstein — 'Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.'
__________________
Shade

"Prepare to defend yourselves."
-- Sergeant Major Basil L. Plumley, Ia Drang Valley
Reply With Quote
  #3  
Old 10-27-2020, 02:21 PM
toprecycler's Avatar
toprecycler toprecycler is offline
Administrator
 
Join Date: Jan 2009
Location: Petoskey, Michigan
Posts: 5,029
Default

Was both torches hooked up and ready to operate?

If they worked in a production environment, and always had to switch from alum to stainless on same job several times, it would be handy to only have to switch machine settings, and grab the right torch and go. Especially if they like pure tungsten which runs better balled up on aluminum.

You just need to make sure the torch not being used is touching any metal. Been there, done that. Had left the tig torch and stick rod holder powered up at old job. And one of the ends shorted out one time because it was left on a bench instead of hung up in proper storage place.

5 minutes to switch leads can be a big time eater in some shops.


Sent from my iPhone using ShopFloorTalk
__________________
Brian

You don't know what you don't know.

"It's what you learn after you know it all that counts." John Wooden
Reply With Quote
  #4  
Old 10-27-2020, 02:55 PM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 8,618
Default

Back when I could see when working for the fitters welding stainless pipe all we had was a tank of gas and a tig torch hooked up to a upright torpedo welder. Maybe they didn't need or want the post flow option.
__________________
Drawing by Smartdraw
Reply With Quote
  #5  
Old 10-28-2020, 08:02 AM
o7oBaseMetal o7oBaseMetal is offline
Senior Member
 
Join Date: Nov 2012
Location: Hannibal, WI is my home away from the road.
Posts: 457
Default

Quote:
Originally Posted by digr View Post
Back when I could see when working for the fitters welding stainless pipe all we had was a tank of gas and a tig torch hooked up to a upright torpedo welder. Maybe they didn't need or want the post flow option.
Still the way it is for the most part. I notice a lot of stainless welders don't touch the tungsten long enough to do the preflow and they think the equipment is the problem rather than their technique. It is a lot easier to just give them something they can understand rather than police their bad habits and build discipline. Also, I have seen the solenoids fail on automatic. A valve torch can also fail but it is easy for anyone to fix in a hurry.

Sent from my KYOCERA-E6560 using ShopFloorTalk mobile app
Reply With Quote
  #6  
Old 10-28-2020, 10:23 AM
digr's Avatar
digr digr is offline
The Real Deal
 
Join Date: Apr 2005
Location: Duluth MN
Posts: 8,618
Default

Maybe in a production environment one torch for a core bead and one for a fill. Just change the heat setting and go and with the gas valves on both torches the gas would only come from one torch.
__________________
Drawing by Smartdraw
Reply With Quote
  #7  
Old 10-28-2020, 01:24 PM
digger doug's Avatar
digger doug digger doug is offline
Not to be used as a Flotation Device
 
Join Date: Jan 2008
Location: NW Pa
Posts: 12,840
Default

Ask this guy....and he's from your state ….
https://buffalo.craigslist.org/tls/d...214960185.html
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Web Search:

All times are GMT -5. The time now is 05:37 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.