Improvements in the obtaining of great tenacity foundries. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in obtaining high tenacity castings, especially from smelters with a total carbon content between 2.5% and 4.3%, with graphite in laminar form, with a phosphorus content below 0, 08% and, preferably, below 0.04%, of chromium below 0.08% and preferably below 0.04%, of hydrogen below 3 cm3 per 100 grams, and which also contain very small of polluting elements, such as arsenic, boron, antimony, lead, tellurium, selenium, etc., characterized by the formation of a ferrite network that is as pure as possible and not distorted, to which effect the content is acted upon of manganese and sulfur so that they are respectively below 0.3% and preferably below 0.15%, and below 0.06% and preferably below 0.03%, proceeding to the decrease in silicon content so that it is lower than that of a normal cast iron able. (Machine-translation by Google Translate, not legally binding)