Re: [CAD_CAM_EDM_DRO] Re: sourcing motion control parts - steel vs aluminum

----- Original Message -----
From: "R Rogers"
> Stress relieving is an annealing process that normalizes a weldment. When
materials are welded, heated to high temperatures unevenly they distort and
contain stresses in different areas. This includes stamped and cold formed parts
as well. Annealing involves placing the weldment in an oven and taking it up to
temperature to allow the molecules to flow evenly then the part is cooled slowly
allowing the molecules in the steel to properly align themselves evenly
throughout the weldment therby alleviating all stresses produced by welding.
It's the opposite of heat treating which carbon steels are taken to a specific
temperatures depending on the rockwell desired and as the molecules flow the
part is quenched in oil or water thereby abrubtly halting the flow of the
molecules. Not allowing the molecules to re-align themselves and making the part
brittle/hard. A note on stress relieving for general purpose welments: Don't
waste your money.