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Edward Vojcak P.E. was a colleague in the Technical Services Department at Bliss and Laughlin Steel, a cold finisher on Chicago’s South Side.
Ed Vojcak
Today he is a Metallurgist and Professional Engineer with A. Finkl and Sons Co.  in Chicago, as well as  a leading contributor to LinkedIn’s Metallurgy and Material Science Group.
finkl
I was impressed with  his response to a  recent request on LinkedIn asking “Why are forged bars better than other bars for a piping application?”
Here is Ed’s reply:

“”Better” is relative.  Best practice is to optimize cost, time and quality of performance.  Forgings are typically more expensive than bar stock or castings because machined dies and furnaces are required – they are generally tougher because the deformation re-aligns the ever present non-metallic inclusions in metals parallel to applied stress – hence the improved quality.  Bar stock can be machined into almost any configuration quickly and has most of the directional strength along its length.”
There are a lot of takeaways from this succinct paragraph, but the one I thought the greatest takeaway was this:
“Better” is relative.  Best practice is to optimize cost, time and quality of performance.
Best practice is

  • Not to optimize only cost.
  • Not to optimize only on quality of performance.
  • Not to optimize only for time.

Ed’s statement gets to the crucial issue in selecting materials for manufacturing- selecting to optimize for several key issues.
Not just raw materials cost.
Thanks  Ed Vojcak for the share.

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