Menene iskar oxygen na simintin ƙarfe wanda aka narkar da ta tanderun narkewa?

Abun da ke cikin iskar oxygen da ke cikin narkakken ƙarfen da aka narkar da shi a cikin cupola gabaɗaya ya kai 0.004 ~ 0.006% (ƙarashin juzu’i, iri ɗaya ya shafi abubuwan da ke biyowa), kuma abun da ke cikin iskar oxygen ɗin ya narke a cikin injin wutar lantarki is generally about 0.002%, sometimes even lower. Generally speaking, the low oxygen content in molten iron helps to improve the metallurgical quality of castings. However, if the oxygen content in molten iron is too low (0.001% or lower), it is not conducive to the formation of crystal nuclei during inoculation , Resulting in the production of supercooled graphite (Type D), even if the amount of inoculant added is increased, the inoculation effect is not good.