Behavior Scale Full 5 points Wearing proper safety attire Helping group members Self-driven Best effort

Behavior Scale 3/5 points Wearing safety glasses Not working with assigned group Asked to work 1x Less than best effort

Behavior Scale 1/5 points Not wearing safety glasses Not in assigned group Asked to work more than 1x Less than best effort

Make sure that the hoses are as straight as possible to prevent electrode problems

Weld Quality

Ideal Weld Uniform ripples, width, height Straight Adequate Penetration Clean start/stop

Undercutting Edges of metal are recessed into the metal Causes – Angle of gun too low – Voltage set too high – Weld speed is too slow

Excessive Spatter Molten metal sprayed over surrounding metal Causes – Angle of gun too low – Wire speed is too high – Gas set too low

Holes in Weld Weld is burnt through the weld seam Causes – Angle of gun is too high – Voltage is set too high – Wire speed is too high/low

Wire Stubs in Weld Small pieces or whiskers are sticking to the weld – Wire speed is too fast – Welding speed is too fast

Poor Penetration Weld has not fully penetrated base metal Causes – Stick out length too high – Wire speed is too low – Voltage is set too low

Porosity Small holes have formed in the weld Causes – Voltage is set too high – Gas flow is set too high

Things to Consider Welding Gun Angle Voltage Wire Speed Gas Welding Speed Wire Stick out Arc Length