Photos of
the Coupler Casting
As-Cast and Machined
After casting and trimming the coupler is
checked for dimensional tolerances and prepared for three finishing operations --
- Non-Destructive Evaluation - X-ray radiography and
dye penetration of selected lot pieces.
- Machining -- drill and ream the four holes, machine
the inside faces of the tabs, and machine the outside diameter for balance.
- Coating -- Protect the coupler with a phosphate
coating for corrosion resistance.
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