Weld question

[New2theArc]

First off I am happy I found this site since I am a bit confused. I have been welding for about 6months now. My company has made me the weld supervisor just because I have more exp. then the second welder had since they put both of us through schooling but a few months apart. Since he has been welding I have started to see at the end of my welds a hole. Not the regular "fish eye" but a hole not big but this concerns me I am afraid it is porosity within the weld.
The next thing I have noticed is that when I am done the bead and it is still red hot I can see what looks to be bubbles in it before I lift my helmet is this porosity in the weld because I don't recall seeing this much at all before.
I work with stuff that goes on trains and I need to be sure of what I am doing and like I said I am only a 6 month welder pushed into a supervisors position.
Any help would be appreciated.

[MAC702]

Help us help you. We need to know as much as you can tell us. Machine, process, polarity, electrode, shielding gas; you get the idea.

[Planet X]

So what are the odds you will work on any trains that bring radioactive waste to my state (NV)?


There is a mgrs. focused book here that might be of use- http://www.weldreality.com/eds_training_materials.htm

[New2theArc]

ok look for a post back tomorrow, I don't have that info available to me right now.

[storts]

First off I am happy I found this site since I am a bit confused. I have been welding for about 6months now. My company has made me the weld supervisor just because I have more exp. then the second welder had since they put both of us through schooling but a few months apart. Since he has been welding I have started to see at the end of my welds a hole. Not the regular "fish eye" but a hole not big but this concerns me I am afraid it is porosity within the weld.
The next thing I have noticed is that when I am done the bead and it is still red hot I can see what looks to be bubbles in it before I lift my helmet is this porosity in the weld because I don't recall seeing this much at all before.
I work with stuff that goes on trains and I need to be sure of what I am doing and like I said I am only a 6 month welder pushed into a supervisors position.
Any help would be appreciated.

Not giving you a hard time because you must be a pretty smart cookie, to go up the ladder that fast,,But sure would like to know where thos trains a runnin,,,,Jack

[New2theArc]

LOL I weld a certin part for trains @ my company that we sell to many railroads so I couldn't give you a definate location LOL.

Ok I am at work and I checked for the following:

- Machine is a Miller Delta-Fab
-Wire feeder is a 24A
- We are running DCEP
-Electrode is ER70S-6 (MIG .035 and last real of .045 [thank god])
-Our gas is blueshield 6 and we have it set at 25LPM
- Welding in spray
- We weld a flat stopper on a round bar bent in a 180 degree. So what we do for our process is we well 2 stringers on the top side of the stopper along the sides and then we flip it over and weld a compleat U we start in the middle and go to the edges. I would say it is a horizontle weld.

I hope that this is enough information if not let me know what else it is you need and I will then give you that info aswell.

I thank you in advance for any and all help you can give me.

If there is any way I can attach a picture I would be willing to do that aswell.

[Bob]

New2theArc,

GOOD FOR YOU!

My praise for you having spotted the differences and caring if it is safe or not. Bad welds can look good .. and then kill people when they are in trains, ships, trailers, and so many things.

DEMAND classes and certification (if not already obtained) for yourself and those who report to you ... to whatever standards apply.

Know what standards apply.

Then demand the same certs for those who report to you. As super, you are responsible.

You'll be protecting yourself and the company and all that stuff on all those trains to get proper training and certs.

There are many experts on these forms about all forms of welding.

Keep posting, keep asking, and post pix if you can. .

Bob

[enlpck]

- We weld a flat stopper on a round bar bent in a 180 degree. So what we do for our process is we well 2 stringers on the top side of the stopper along the sides and then we flip it over and weld a compleat U we start in the middle and go to the edges. I would say it is a horizontle weld..

Clarification please... Which of these positions are you in?

Flat: you have the part positioned so that when you weld, the part is below the weld metal (like laying a bead on top of a table). The limit of this position is a fillet weld between a horiontal and a vertical piece (floor and wall), where gravity begins to significantly pull the weld metal away from where you are working.

horizontal weld: think of a wall (like in your house) and draw a hrizontal line on it, as if marking out where you are coing to put a new window sill. Now imagine the wall is steel, and you are drawing the line with your MIG gun. This is horizontal. Technically, if you lay a piece of pipe on a flat table (on it's side, so it can roll) and weld in the groove between the pipe radius and the table, this is a horizontal weld.


Procedure questions: What prep is done on the metal before welding? Is there mill scale that isn't removed? How is the 'stopper' cut? Has this changed recently (like going from a flame or plasma cut part to a punched or stamped part... maybe an oil film is on the material)? Has the wire brand changed lately? Gas supplier? Have you checked the gas flow at the gun? Have you checked the hoses and gun cable, and the gas connections?

Out of curiosity, can you identify the part? or would that be proprietary info?

[LBHgti]

Sounds remarkably like inadequate shielding, maybe no gas, not enough gas, clogged nozzle, or wrong gas.

[hankj]

Shoot some pics with a digital camera, download them to your computer, and then attach them to your post with the "Manage Attachments" button down near the bottom of the post screen. Scroll down - you'll see it.

Hank