280 likes | 363 Views
Reproduction of Tractor Components. Senior Design Project Spring ‘07. Charlie Tullis. Part #One: Exhaust Valve Cage. 1914 McCormick 8-16 Mogul Tractor Problem: Customer missing part. Part #One: Exhaust Valve Cage. Original International Harvester Corp. Final Part prints.
E N D
Reproduction of Tractor Components Senior Design Project Spring ‘07 Charlie Tullis
Part #One: Exhaust Valve Cage • 1914 McCormick 8-16 Mogul Tractor • Problem: Customer missing part
Part #One: Exhaust Valve Cage • Original International Harvester Corp. Final Part prints
Part #One: Exhaust Valve Cage • Predicted Porosity
Part #One: Exhaust Valve Cage Metallurgy • Total Carbon =3.57% • Silicon =3.37% • Cu =? • Cr =.02% • Mo =.01% • P =.89% Desired Brinell Hardness HB=170-200 Actual HB= 321
Part #One: Exhaust Valve Cage Grey Iron 80% type A graphite 20% type D&E
Part #One: Exhaust Valve CageCasting Defects • Gas defect only ( Blow)
Part #Two: Intake/Exhaust Manifold • Metallurgy • C =3.66% • Si =1.6% • Ni =0.9% • Cr =0.85% • Mo =0.65% • Cu =0.35%
Original Manifold Manifold Pattern Follow Board Part #Two: Intake/Exhaust Manifold
Part #Two: Intake/Exhaust Manifold • Exhaust Core Boxes ( under construction)
Part #Two: Intake/Exhaust Manifold • Intake Core blank
Part #Two: Intake/Exhaust Manifold • Pin Core Box
Inspection Process • Solid walls • Inclusions • Surface defects (rat tails, buckles, burn on) • Pin holes • Cold laps • Inspection tools • Visual • Pressure test • Ultrasonic imaging