Hey everyone im taking a structural welding class in school and wanted to know your input on my welds ive been practicing. im using a Lincoln mig welder, not sure of the model.

these are both overhead
butt with backing plate and plug





comments welcome on how to improve

 

Looks ok, why dont you lay a longer bead and then try to get some input. Would make more since.

 

Because he's doing I-CAR weld test plates. Pretty good. I'm asuming your using Lincoln SP-135 Plus at school. Now check with the level gauge that was handed to you for the length, width, height, and diameter; and do the destructive test to see if it's aplicable.

PS: You cant use GMAW for structural. Only SMAW or Flux-core for Structural welding.

 

I passed that crappy test. Now go weld some paper thin import sheet metal together using the same techniques, and see what happens. Welds look decent, you got a little impatient at the end of your butt with backing, probably good enough to pass though

 

yeah i passed the I-CAR test also, these were taken at the begining on the semester, sept of 05

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sc4dr &raquo;</TD></TR><TR><TD CLASS="quote">I passed that crappy test. Now go weld some paper thin import sheet metal together using the same techniques, and see what happens. Welds look decent, you got a little impatient at the end of your butt with backing, probably good enough to pass though </TD></TR></TABLE>

how did he get impatient?

 

The last of the weld isnt as wide as the rest of the bead, meaning he didnt sit there and fill in the last second or two, but stopped a little early. They look great and would pass for anything most likely. Only suggestion I could give you would be turn the wire speed down just a LITTLE BIT...could be the pictures too, but it looks like they may be SLIGHTLY too much filler wire in there. Lookin great though!
Kyle

 

that is the beginning of the weld i believe.

the end is the top in the first pic posted. the puddle follows you...

-derek

 

Looks good just keep practicing

 

shitty welds....j/k, ease up on the filler.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by supercreed2002 &raquo;</TD></TR><TR><TD CLASS="quote">shitty welds....j/k, ease up on the filler.</TD></TR></TABLE>

Its a mig... You dont add filler will mig.

He could slow his wire speed BTW your welds are very good for overhead!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HamiltonRex &raquo;</TD></TR><TR><TD CLASS="quote">

Its a mig... You dont add filler will mig.

He could slow his wire speed BTW your welds are very good for overhead!</TD></TR></TABLE>

Actually you do, just not manually.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HamiltonRex &raquo;</TD></TR><TR><TD CLASS="quote">Its a mig... You dont add filler will mig.

He could slow his wire speed BTW your welds are very good for overhead!</TD></TR></TABLE>

::scratches head:: huh?

 

motorsports welding and structural are diff ****. for race car looking welds try a C motion with a little whip hesitation. or do the dot-dot-dot thing. which is just welding spots on at a t ime. this gives you the stacked dime appearence, and lets things cool between dots so you dont blow through thin metal.