EcoRenovator  

Go Back   EcoRenovator > Improvements > Tools
Advanced Search
 


Blog Register 60+ Home Energy Saving Tips Recent Posts Search Today's Posts Mark Forums Read


Reply
 
Thread Tools Display Modes
Old 09-11-19, 01:39 PM   #11
philb
Apprentice EcoRenovator
 
Join Date: Nov 2010
Location: Oklahoma City
Posts: 142
Thanks: 53
Thanked 16 Times in 13 Posts
Default

HF welders also don't have the electronics Lincoln's and Miller's do. It's just a cheap welder that's light enough to climb ladders and scaffolding in hand. I do prefer the old Ideal Arc welders myself.

After getting under the hood, I realized this machine is just a large, old power supply. It has a multi-tapped transformer, diodes, inductors and capacitors to smooth the wave form. It is very inefficient by today's standards. I'm thinking since the inductor is welded on top of the transformer because it is borrowing some magnetic flux to keep the amperage surge down?

The Lincoln Weld Pac 100 I have adds an electronic board and capacitor the HF doesn't have. Since the Lincoln no longer functions, I'll rob the capacitor. It is a DC 59,000 uf cap, so care must be taken to get the connections right.


Last edited by philb; 09-11-19 at 03:40 PM.. Reason: .
philb is offline   Reply With Quote
Old 09-12-19, 12:00 PM   #12
oil pan 4
Land owner
 
Join Date: Nov 2012
Location: NM
Posts: 972
Thanks: 12
Thanked 118 Times in 100 Posts
Default

I found adding capacitance works great if you run Flux core.
oil pan 4 is offline   Reply With Quote
Old 09-12-19, 09:47 PM   #13
philb
Apprentice EcoRenovator
 
Join Date: Nov 2010
Location: Oklahoma City
Posts: 142
Thanks: 53
Thanked 16 Times in 13 Posts
Default

Flux core or stick is all I do. I should get that mod done tomorrow.
philb is offline   Reply With Quote
Old 09-15-19, 07:56 PM   #14
philb
Apprentice EcoRenovator
 
Join Date: Nov 2010
Location: Oklahoma City
Posts: 142
Thanks: 53
Thanked 16 Times in 13 Posts
Default

My test equipment shows this 40 volt 59,000 uf capacitor at 34,000 uf, which is out of range. I'm going to get another capacitor. There's small difference between the before and after sine wave. It was added before the inductor on the positive side and negative goes directly to the negative side of the lead. This is supposed to be a DC signal so its very very rough.
Attached Thumbnails
Click image for larger version

Name:	20190915_183252.jpg
Views:	27
Size:	270.4 KB
ID:	8733   Click image for larger version

Name:	20190915_183358.jpg
Views:	27
Size:	146.3 KB
ID:	8734  
philb is offline   Reply With Quote
Old 09-16-19, 10:20 AM   #15
oil pan 4
Land owner
 
Join Date: Nov 2012
Location: NM
Posts: 972
Thanks: 12
Thanked 118 Times in 100 Posts
Default

Use both.
I found that Flux core likes as much capacitance as you can throw at it.
Welders use the default 50k to 60k uf capacitor as a good trade off between solid wire and Flux core performance. With the trade off favoring solid wire and gas.
With nearly 100k uf I can make Flux core welds that are as good looking as solid wire and gas.
oil pan 4 is offline   Reply With Quote
The Following User Says Thank You to oil pan 4 For This Useful Post:
philb (09-16-19)
Old 10-07-19, 10:53 AM   #16
patrickh99
Lurking Renovator
 
Join Date: Jul 2018
Location: SC
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I know this thread is a little old, here's another option to consider if the heatsinks do not provide enough cooling: https://www.geek.com/geek-cetera/coo...n-oil-1495403/
Take the fans out and submerge in a 5gal bucket of oil....? Just don't kick the bucket!
patrickh99 is offline   Reply With Quote
Old 10-07-19, 11:26 AM   #17
Xringer
Lex Parsimoniae
 
Xringer's Avatar
 
Join Date: Feb 2009
Location: Woburn, MA
Posts: 4,836
Thanks: 105
Thanked 241 Times in 222 Posts
Default

Quote:
Originally Posted by pr0cess0r View Post
is there any water cooled welder?
Maybe it a factory or shipyard, where they need continuous-duty welders.?.
__________________
My hobby is installing & trying to repair mini-splits
EPA 608 Type 1 Technician Certification ~ 5 lbs or less..
Xringer is offline   Reply With Quote
Old 10-08-19, 03:10 PM   #18
philb
Apprentice EcoRenovator
 
Join Date: Nov 2010
Location: Oklahoma City
Posts: 142
Thanks: 53
Thanked 16 Times in 13 Posts
Default

patrickh99, I have considered liquid cooling but the welder has to be kept as light as I can get it. The welder frequently goes up ladders and scaffolding in my hands.

The heat sinks are working very well. They keep the welder about 30 degrees above ambient temp now.

I ordered 4 capacitors several weeks ago on ebay. They came in and I tested them before instillation. I'm glad I did. They tested out at about 10% of the face value. The seller issued a refund and I'm still hunting for suitable capacitors. They're difficult to find without spending $80 each.
philb is offline   Reply With Quote
Old 10-08-19, 04:56 PM   #19
Daox
Administrator
 
Daox's Avatar
 
Join Date: Aug 2008
Location: Germantown, WI
Posts: 5,358
Thanks: 1,000
Thanked 349 Times in 284 Posts
Default

What specs are you looking for on the caps?
__________________
Current project -
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Daox is offline   Reply With Quote
Old 10-08-19, 07:43 PM   #20
philb
Apprentice EcoRenovator
 
Join Date: Nov 2010
Location: Oklahoma City
Posts: 142
Thanks: 53
Thanked 16 Times in 13 Posts
Default

Somewhere around two 47,000- 97,000 uf electrolytic capacitors. Screw tops are preferred as it would simplify installation but not absolutely necessary.


Last edited by philb; 10-08-19 at 07:51 PM.. Reason: .
philb is offline   Reply With Quote
The Following User Says Thank You to philb For This Useful Post:
Daox (10-09-19)
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


All times are GMT -5. The time now is 07:19 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Ad Management by RedTyger
Inactive Reminders By Icora Web Design