iRubric: GMAW 4G joint Assessment Rubric

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GMAW 4G joint Assessment Rubric

SMAW/GMAW/GTAW 1-4G joint Assessment Rubric

Used to evaluate students performance welding beads in all positions. Covers penetration, bead width, bead height, appearance, and instruction and dimensions of plate

Rubric Code: TX85A22

By LSC_WLDG_CRED

Ready to use

Public Rubric

Subject: Vocational

Type: Project

Grade Levels: Undergraduate

GMAW 4G Assessment
	Poor 5 pts	Fair 10 pts	Good 15 pts	Excellent 20 pts
Penetration	Poor weld/filler metal is on top of base metal, or burn through at bottom of base metal. Hole(s) in base metal, or blow out and large iceicles in reinforcment root	Fair shows evidence of no penetration in some of the Root weld.	Good shows evidence of good penetration in most of the root weld.	Excellent Weld bead has sufficient buildup, and no burn trough with consistent weld penetration to standard of 18th inch as well as below the plate on reinforcement, with out much variance.
Width of Bead	Poor Width of weld bead varies 1/2	Fair Width of bead weld over 3/8	Good Width of weld bead varies betweeen 1/4 and more	Excellent Width of weld bead varies 1/4
Height of bead	Poor Not consistent and very uneven. Lots of Highs and lows.	Fair 2 - 3 sections of weld bead too high or too low.	Good 1 section or of weld bead too high or too low.	Excellent weld bead is with in the standard of flush to 1/8th above the plate
Apperance	Poor Ripples uneven and rough. Abundance of porosity, undercut, under fill, cold roll and other.	Fair Most of the weld is rough and has uneven ripples. Most of the weld has one or all of these items present: Valleys porosity, undercut, under fill, cold roll, present.	Good Some of the weld is rough and has uneven ripples. But is consistent and has little to none of the following: Valleys porosity, undercut, under fill, cold roll, present	Excellent Weld is smooth and ripples are evenly spaced. None of the following are present: Valleys porosity, undercut, under fill, cold roll, present
Instructions/Dimention	Poor Name, Date, Fit up, and plate dimensions are None existent or are not with in provided instructions. or used the wrong size plate, or welded in wrong position	Fair Name, Date, Fit up, and plate dimensions are Name and date are in the proper location and with in 1/16th of the parameters Fit up needs work not level and gap not consistant	Good Name, Date, Fit up, and plate dimensions: Fit up is with in an 1/16 of the parameters provided, level but gap is inconsistent. Name and date are not on proper location	Excellent Name, Date, Fit up, and plate dimensions: Are all exact to the instructions and dimensions provided