Nɛgɛ min be nɛgɛ bugurinjɛ la, o lɔyɔrɔ .

1. Mangani ni kibiri .
Generally speaking, sulfur is a harmful element. But for gray cast iron, a small amount of sulfur plays a very important role in the refinement of graphite core and cocrystal groups. Therefore, the sulfur content in gray cast iron should not be less than 0.06%, and it is best to keep between 0.06% and 0.08%. If the sulfur content is too high (>0{{1}18%), kɔlɔlɔ sifa bɛɛ bena bɔ ani ka fɛnw ka ɲumanya tiɲɛ.
Sulfur ye fɛɛn ye min ka kemikali baara barikaman lo ni kemikali baara barikaman ye. Ni manganzi min be nɛgɛ la, o ka dɔgɔ kosɔbɛ, kibiri ni nɛgɛ be FeS (sɛli yɔrɔ 1193 degere ) ani fana a be kokirisitaliw dilan ni nɛgɛ ni karbɔni ye (karibɔni 0.17%, kibiri 31,7%, a tɔɔ be yɛlɛma 975 la ).
FeS be se ka yɛlɛma pewu nɛgɛ furakisɛ kɔnɔ. Ni nɛgɛ be yɛlɛma, kibiri walima FeS min be sɔrɔ austenite kɔnɔ ani kabɔnizasiyɔn barikaman kɔnɔ, o ka dɔgɔ kosɔbɛ, a be bonya dɔɔni dɔɔni jii fazi tɔw la, ani a laban na, a be yɛlɛma ka kɛ sulfide cogoya ye, n’a kibiri min be nɛgɛ la, o ye 0.02% ye, a be se ka bɔ a yɛrɛ la.
Nɛgɛ bugurinjɛ la, kibiri ni mangani ka afinite ka bon kosɛbɛ ka tɛmɛ nɛgɛ ta kan, ani MnS dilanni ka ca yɛlɛmani min ɲɛfɔra nin ɛkuwasiyɔn kɔnɔ. kɔnɔ.
Mn+FeS MnS + Fe
MnS ka yɛlɛmani yɔrɔ ye degere 1620 ye . Nɛgɛ bugurinjɛ kɔnɔ, MnS ye fɛn ye min be se ka don nɛgɛ kɔnɔ, min be jɛnsɛn nɛgɛ matirikisi kɔnɔ, ani a be dɛmɛ don ka nɛgɛ filicogo fisaya ani ka minan ka ɲɛnamaya fisaya. .
Nɛgɛ bugurilaman kɔnɔ, MnS ni FeS be se ka ɲɔgɔn minɛ, o la, mangani ni kibiri hakɛ min be sɔrɔ sulfide (MnFe) kɔnɔ, o be yɛlɛma yɛlɛma{{0} kibiri ni nɔgɔ be se ka ɲɔgɔn sɔrɔ, o la, nɛgɛ bugurinjɛ la, sulfide kɔnɔ, sulfide cogoya ka gwɛlɛ kosɔbɛ, o fɛn minw be sɔrɔ, u be se ka yira ni FexMnySvOw ka hakɛw ye . ka bɔ nɛgɛ.
Saan tɛmɛninw na, sɛgɛsɛgɛli min kɛra ni nɛgɛ hakɛ sɛgɛsɛgɛli ye, o y’a yira ko MnS ni (MnFe) S be don nɛgɛ 1cm3 kɔnɔ, ani a be don 2~23 micro{{5} .
Ni kibiri be FeS wala verary co-cristal kɔnɔ, a be danfara kɛ jii fazi la kokɛsitali yɔrɔ la, a be koɲɛw yɛlɛma, a be ko-kirisitali kulu ka yiriwali bali, ani a be dɔ fara ko-kirisitali ka fanga bonya kan, o la, a be dɔ fara nɛgɛ nɛgɛman ka da kɔnɔ, FeS walima kɔrisitali min be dan na . kokirisitali kulu bena nɛgɛ min be bɔ, o ka mekaniki cogoyaw ye min ka bon ni brittleness ye . O ye kibiri. ka nɔɔ jugu ye.
Ni magani hakɛ caaman farala nɛgɛ kan ka FeS bɔli bali ani k’a dilan ka ɲɛ ani k’a jɛnsɛn, kibiri bena lɔyɔrɔ ɲuman sɔrɔ ani ka nafa sɔrɔ grafiti ni yiriwali la, grafiti fitinin, grafiti ye A, graphite ye A ye, a ka dɔgɔ ni grafiti sɛbɛ ye, kibiri min be sɔrɔ . nɛgɛ bugurinjɛ ka kan ka kɛ 0{{3}06%. Kilifɛn min be sɔrɔ, o ka dɔgɔ ni nin hakɛ nin ye, ani grafiti sɛbɛ tilanni nɛgɛ kɔnɔ, o ka jugu, ani a ka nɔgɔ ka daa gwɛman bɔ.
Mangani ka baaraba min be kɛ nɛgɛ bugurinjɛ kɔnɔ, o ye ka kibiri bali ka FeS labɛnni bali. Sabu magani atomiki girinya hakɛ ye 1.71. MnS ka ɲɔgɔndan hakɛ min be kɛ nɛgɛ la, o ye 1.71. Mangn min ka bon ni equilibrium ye, min be weele .