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It is common
casting practice to use a "riser" as a reservoir of
molten metal from which the casting "back fills" as it shrinks during solidification.
A riser, being the last section to solidify, acts as a "trap" for the solidification shrinkage. Risers are
commonly positioned to feed into the heaviest sections of a casting which
will be the last sections to solidify, because they have the greatest
thermal mass.
Two approaches were considered for controlling solidification in the
connector:
- Approach A -- A
riser feeding into the main cylinder.
- Approach B -- A
riser feeding into the two plates.
Choose the
riser design
(Approach A or Approach
B)
which will be more effective in reducing solidification shrinkage in the body of the casting. |
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