thermal contraction of carbon steel rings

[olat]

Hello !

I am working with thermal contraction of carbon steel rings at temperatures from 1200 K and down to room temperature.

I know the theoretical linear thermal expansion factor of the steels but according to measurements it seems that rings with bigger diameter has a higher "shrinking factor".

Does anybody know what influence the geometric shape and size of the ring has on the thermal contraction?

Thanks in advance,

Ola

 

[metengr]

How did you measure the increase/decrease in OD? Typically, volumetric expansion of steel is based on the equation below;

delta V = 3* linear COE

Larger diameter, or increased thickness or increased length means greater increase/decrease in change of dimensions.

 

[olat]

Thanks: metengr

I have measured the decrease with a special kind of ruler. I'll keep in mind the volumetric expansion. Maybe also the colling down time has some effect.

I'll look into that.

/Ola