I work in a steel factory where we stamp out internal parts for motors and generators and the material is anywhere from .018-.028 of an inch thick. And then we run it through a furnace for 4 hours at around 1400 degrees.
Afterwards I test he material through a magnetic tester and we record the core loss and the permeability. What does all this mean?
In: 6
Steel is a combination of iron, carbon, and a few other odds and ends. The exact balance between iron and carbon likes to stick to a few ratios.
So if you have an overall 4:1 ratio (made up numbers), it will form a mix of crystals that are 2:1 and 8:1 so the average is 4:1.
The space between these crystals will have a more chaotic mix. The more time the crystals have to form, the larger they get and the more the chaotic mix sorts itself out into crystals. Heating steel allows the crystals to move freely and reform.
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