Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior> Strength of a flux core weld?
User Name
Password
lost password?   |   register now

Thread: Strength of a flux core weld? Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
02-09-2005 01:09 PM
oldred Ok-my two cents,I would strongly recommend NOT using flux core! I have been a certified welder for well over 30 years and I have used flux core wire in the mining industry since 1968 in sizes from .030 to .120 and on metal ranging from thin sheet to over 14" thick. In my opinion flux core is not nearly as strong as MIG wire and the only reasons we used it in the first place was because it would weld OK outside in the wind where a true MIG was not practical and it made for faster repairs when strength wasn't a major factor. I would NEVER consider flux core for a critical weld such as a frame or ANYWHERE else a weld failure could cause an accident or injury. If you look at the material data sheet you will see a small amount of aluminum is used as one of the deoxidizers--need I say more? Have you considered Oxy/Acetylene welding? Works great on tubing,quite often homebuilt aircraft are welded using this method. If you have access to a true MIG welder or a stick using low hydrogen rods(e7018 or similar)you can do a simple test by tacking a small plate to a metal table top or another plate and then bending them untill they break. If both types of welds are done correctly the flux core will fail with a LOT less effort.
02-09-2005 12:15 PM
Bee4Me I've had no problems with the weld's themselves,just butt ugly joint's. The gussets would be good insurance.
You know kid's. "OK, I'll hold the rope and you go and..........
02-09-2005 09:08 AM
Dejavu Thanks, I just needed some reassuring from a more experienced builder. I still might add gussets to some of the joints, just as insurance and so my wife can sleep nights.
Thanks again,
Fred
02-09-2005 07:13 AM
Centerline This is a good question and I'm sure you're going to get differing opinions on this.

It's my understanding that the flux core welder uses the flux to purify the weld just as the gas is used to purify the weld when using a conventional mig welder.

The argument and where people have a difference of opinion as to how well the flux core wire actually purifies the weld. Some will say not well at all and others will say it does the job just fine. All I can do is relate my experience. I use a Lincoln weld pack 100 flux core welder exclusively and I've done everything from light sheet metal to 3/16" steel including frame work. From what I've seen the welds, although certainly not as pretty, are just as strong as a gas weld. I get good penetration and other than the spattering caused by the flux I can see no difference. I generally grind my welds to dress them up so the spatter doesn't bother me much.

That's my experience so if it was me, I wouldn't worry about it. Now I'm sure there are going to be some descending opinions coming.....

Centerline
02-09-2005 05:53 AM
Dejavu
Strength of a flux core weld?

My budget lead me to purchase a flux core welder, and it has worked for the patching and light fab work I have done so far. My boys want to build a mini chopper and I need some feedback on the strength of the welds using flux core. The welds appear dirty; does the flux create inclusions that would weaken the weld? Or is this just an appearance thing? I can live with a patch falling out, but not a fall from a broken weld.
Thanks,
Fred

Posting Rules
You may post new threads
You may 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


All times are GMT -6. The time now is 02:50 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.