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iRubric: Semester Final: Welding Rubric

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Semester Final: Welding Rubric Semester Final: Welding Rubric Students will use multiple techniques to produce welds to match example. Rubric Code: DX49899 By tkovacs Ready to use Public Rubric Subject: Vocational Type: Project Grade Levels: 9-12

Welding Joints GMAW
	Unacceptable 4 pts	Needs Improvement 6 pts	Acceptable 8 pts	Very Good 10 pts
Weld width and height: Uniform width and thickness throughout the entire length of each weld.	Unacceptable Weld is cut off in places, not uniform along the weld. Shows bare spots	Needs Improvement Not a uniform thickness through out the weld. Thickness goes to extremes	Acceptable Bead maintains width and length. Shows some small blemishes along the weld	Very Good Bead is uniform width all along the length of each weld. Has a smooth appearance
Appearance Smooth with uniform dense ripples, doesn’t show the bead traveling to fast or slow	Unacceptable Weld has been done too fast or to slow. Weld is not complete	Needs Improvement Weld shows definite areas of speeding up and slowing down. Ripples tend to be coarse	Acceptable Weld shows a constant speed with some blemishes that are minimal	Very Good Weld shows a constant speed and uniformity the entire length
Face of bead/Edge of bead Convex, free of voids and high spots, shows uniformity throughout the bead. Good fusion, no overlapping or undercutting	Unacceptable Weld does not blend into one single bead.Metal is burned through. Weld has no connection to metal,	Needs Improvement Bead shows many high and low area's. Total lack of uniformity throughout the weld. Float and undercut are very apparent. Weld lacks strength and flow	Acceptable Bead is well rounded, mostly uniform over the length of the weld. Shows some high spots and low spots. Moderately smooth blending. Undercutting and float are present. Strength of the weld is still strong	Very Good Has a nice rounded look. Is not overly high, or low. Bead covers a wide area of each weld.Sides and edges are smooth blending into each weld. Undercutting is kept to a minimum, Weld does not float on surface
Surrounding Plate Welding surface free of arc strikes	Unacceptable Excessive arc strikes take away from the integrity of the weld.	Needs Improvement Less than three arc strikes are present.	Acceptable One arc strike is present.	Very Good Welds are free of arc strikes.
Penetration Complete without burn through	Unacceptable Weld floats on top of the metal. Has no strength	Needs Improvement Weld is uneven in depth, lacks uniformity along weld length.	Acceptable Weld penetrates deep but does not re surface through the bottom of a jointed welds	Very Good Weld penetrates deep into the metal and adds strength and fusion to the edges and depth.