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iRubric: Pipe Weld Bead Assessment - Arc Welding rubric

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Pipe Weld Bead Assessment - Arc Welding 
Rubric Code: TXXW787
Ready to use
Public Rubric
Subject: Vocational  
Type: Project  
Grade Levels: Undergraduate

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  Unacceptable

1 pts

Needs Improvement

2 pts

Acceptable

3 pts

Very Good

4 pts

Safety Practices

Unacceptable

No welding helmet worn.<BR>
No safety glasses worn.<BR>
Student will not be allowed to continue the assignment.<BR>
No welding gloves worn.
Needs Improvement

Two or less of the following safety practices violated:<BR>
Incorrect shoes worn.<BR>
Incorrect clothing worn.<BR>
Hot metal carried in gloved hand(s).
Acceptable
Very Good

All of the following safety practices were followed:<BR>
Proper welding gloves worn.<BR>
Proper shoes worn.<BR>
Proper clothing worn.<BR>
Pliers, etc. used to carry hot metal.
Pipe Bevel

Unacceptable

Pipe is out of square, bevel is greater than 37.5 degrees
Needs Improvement

Pipe is close to square and 37.5 degree bevel
Acceptable

Pipe is square and has 37.5 degree bevel
Very Good

Pipe is square, has 37.5 degree bevel, cleaned inside and out, filed
Tack Welds

Unacceptable

Welds do not break the inside bevel, rounded, less than 3/8", big mess, edges not feathered
Needs Improvement

Welds pushed through too much, or sucked back, not 3/8", not blended on pipe side
Acceptable

Welds are smooth inside, 3/8", feathered, tapered both ends
Very Good

Welds are wedding ring appearance inside, ends feathered, blended outside, no defects
Root Pass

Unacceptable

Not tied into tacks, too much push through, suck back, weld defects, pipe side weld is not uniform, wide, weld defects
Needs Improvement

Weld is almost uniform, tacks somewhat tied into, a few defects on root and pipe side,
Acceptable

Weld is smooth inside with no suck back, tied into tacks, with no major defects, pipe side is smooth
Very Good

Weld is wedding ring appearance on inside of root, all tacks are smooth and tied in, pipe side is smooth, has the "V" line down the middle, no defects
Hot & Fill, Bead Width

Unacceptable

Beads unsuccessfully made.
Needs Improvement

Bead narrower or wider than width of two electrodes used.
Acceptable

The majority of the bead is equal to the width of two electrodes used.
Very Good

Bead width equals the width of two electrodes used.
Bead Shape

Unacceptable

Bead unsuccessfully made. Bead is higher than 1/4" or flat.
Needs Improvement

Bead does not form the acceptable shape - has one of following problems.<BR>
Too flat<BR>
Too high and does not blend into the base metal at the weld toes.
Acceptable

Proper bead shape is not consistent for the entire length of the bead.
Very Good

Bead has an acceptable shape for the entire weld.
Weld Start & Finish

Unacceptable

Bead unsuccessfully made. Tie-ins do not match.
Needs Improvement

Bead has some undercutting and porosity, but the tie-ins match
Acceptable

Bead ties-in, but is slightly crooked, with no undercutting or porosity.
Very Good

Bead has an acceptable tie-in at the start and finish (Bead looks like one continuous weld from start to finish) with no undercutting or porosity.
Weld Cap Defects

Unacceptable

Weld has defects such as porosity, cracks, slag, arc strikes,
un-uniform appearance,
Needs Improvement

Weld cap is not straight. There are arc strikes outside the weld. Beads not tied in and not uniform.
Acceptable

Weld is uniform, beads are tied into one another. Weld cap is straight without craters. One or two small defects which are acceptable, may be present
Very Good

No weld defects are present. Weld is uniform, straight, re-inforcement 1/8". Clean, no splater balls,




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