435B Transport Container Fabrication Challenges and Solutions Presented by Kyle Harrison

435B – Transport Container Impact Limiter Transport Container and Inner Container Lodgement

Fabrication Challenge #1 Fabricating Rolled Rings with Flanges Upper Ring Lower Ring

Fabrication Challenge #1 Upper Ring Upper Ring Fixture Upper Ring after Forming Upper Ring

Fabrication Challenge #1 Upper Ring Upper Ring Welding and Forming Fixture

Fabrication Challenge #1 Lower Ring Rolled Ring with Welded on Flat Head Rough Machining with Weld Prep Geometry in the Slot

Fabrication Challenge #1 Lower Ring Finished Ring Geometry Lower Ring Ring in Fabrication

Fabrication Challenge #1 Possible Solutions Be aware of the limitations of flanging rings Have a conversation with potential supplies Thicker materials Longer Flanges

Fabrication Challenge #2 Lodgment –Distortion Prototype Piece Part Tolerances: +/- 0.030” to +/- 0.060” Final Weldment Tolerance: +/- 0.060” Welding Distortion Approximately 0.045” Minimized through process testing (GTAW, GMAW, Parameters)

Fabrication Challenge #2 Diametrical – Expanding Plates (Inner Container) OD of the Flange Tolerances: +/- 0.030” before and after welding Container 1: OOT by 0.090” Container 2: OOT by 0.070”

Fabrication Challenge #2 Diametrical – Expanding Plates (Head to Shell) Head Supplied at Low End of Tolerance Zone Used a 1.25” Machined Plate Produced No OOT Condition

Fabrication Challenge #2 Diametrical – Expanding Plates (Head to Shell) Head and Plate

Fabrication Challenge #2 Possible Solutions Control the Final Weldment more than the Piece Parts Allow for Plate Thickness Increase (Machine allowance and Stack up) Allow for Machined only Components Side Note: Geometric Tolerancing to Distorted Datums

Fabrication Challenge #3 Order of Fabrication Upper Bell Flange Cross Section

Fabrication Challenge #3 Order of Fabrication Rough Machining and Welding Final Machining Final Shell Weld

Fabrication Challenge #3 Possible Solutions Partner with a Fabricator that will give Guidance for Weld Distortion, Manufacturability and Machinability. Allow Creative Solutions that Meet the Design Intent

Questions