MTTC Welding Trade Test case studies
MTTC Welding Trade Test · Put your knowledge to work in context.
The MTTC Welding Trade Test is a Michigan teacher-certification assessment for individuals who want to teach welding in a secondary or postsecondary career and technical education setting. It is aimed at candidates who already hold trade-level welding skill and now need to demonstrate that they can teach it: the exam blends hands-on trade knowledge with pedagogy, safety, and shop-management judgment. The MTTC Welding Trade Test case studies are 5 cases and about 1,976 words.
1Fume Control on a Galvanized Repair Job
A maintenance crew must repair a galvanized handrail inside a partially enclosed pump room. The room measures 6 m by 4 m with one 1 m by 1 m louvered opening and a door that stays propped.
447 words, about 2 min2Porosity on a Gas-Shielded Stainless Job
A shop is welding 6 mm Type 304 stainless plate in the flat position using GTAW with argon and 2.4 mm ER308L filler. The first articles passed, but a batch of ten parts now shows scattered porosity and a gray-black surface oxide along the bead.
399 words, about 2 min3Interpreting a Fillet Weld Symbol on a Skid Frame
A fabricator receives a drawing for a skid frame. One detail shows a fillet weld symbol with the arrow pointing to a vertical member, the triangle on the side of the reference line away from the arrow, a 6 mm size to the left of the triangle, a length of 150 with a dash and a second number of 75, and a tail containing 'WPS-14.' The welder reads it as a continuous 6 mm fillet on the arrow side and begins laying a full-length bead.
381 words, about 2 min4Cracking After Welding a Repaired Casting
A repair shop is welding a cracked cast iron pump housing. The casting is thick and irregular, and the shop plans to use a nickel-based electrode with preheat.
388 words, about 2 min5Qualifying a Procedure for a New Thickness Range
A shop has a qualified GMAW procedure tested on 10 mm plate in the flat position with 1.2 mm solid wire and a 75% argon/25% CO2 blend. A new contract requires 4 mm fillet welds in the horizontal position on the same material group, plus some 20 mm groove welds in the vertical-up position.
361 words, about 2 min