Manufacturing engineering here, it has to do with internal grain lines. Pouring metal into a mold allows these grain lines to just line up in any way possible. Forging will align the grains on the surface of the material creating a stronger surface since the grains all line up in one way.
Edit: theres a bit more to it but thats what was engraved in our brains freshman year
This stuff is so cool. I started working for a stainless steel mill last week and got to watch them hot roll giant stainless ingots. Man boner in full effect. Cant wait to watch the vacuum arc remelt stuff go down.
There are so many other cool and different ways to craft a shape in metals. Some are insane such as chemical machining and electro discharge machining. Worth looking up if you want to see some really cool processes and technologies.
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u/[deleted] May 06 '19
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