Jasper County Democrat, Volume 18, Number 92, Rensselaer, Jasper County, 16 February 1916 — “Seasoning” Iron Castings. [ARTICLE]

“Seasoning” Iron Castings.

In the manufacture of the higher types of machinery care is taken to lessen the cooling stress of iron castings by annealing or some other means, in order to make the iron homogeneous and less liable to breakage or distortion. This, process is known as “seasoning.” It has been found in the case of ordinary test bars one inch square in section that there was a gain in strength of about 20 per cent, due to the shocks sustained during an hour in a tumbling barrel, as compared with companion bars from the same ladle not s: treated.