Sulfur awọn ajohunše fun carburizing òjíṣẹ
Lori boṣewa imi-ọjọ ti carburant, akoonu imi-ọjọ ti carburant ni ori ti o gbooro ni a le pin si imi-ọjọ giga, imi-ọjọ alabọde, imi-ọjọ kekere, imi-ọjọ ultra-kekere.Efin giga ni gbogbogbo tọka si akoonu imi-ọjọ loke 2.0% Sufur alabọde gbogbogbo tọka si akoonu imi-ọjọ ti 1.0% – 2.0% L...