Karfe mai yankan kyauta zagaye sandar/hex

Karfe masu yankewa kyauta wanda aka fi sani da ƙarfe masu sarrafa kayan aiki kyauta su ne waɗanda ke samar da ƙananan guntu lokacin da aka yi musu injin. Wannan yana ƙara ƙarfin injin kayan ta hanyar raba guntu zuwa ƙananan guntu, don haka guje wa haɗuwarsu a cikin injin. Wannan yana ba da damar gudanar da kayan aiki ta atomatik ba tare da hulɗar ɗan adam ba. Karfe masu yankewa kyauta tare da gubar kuma yana ba da damar haɓaka ƙimar injin. A matsayin ƙa'idar babban yatsa, ƙarfe mai yankewa kyauta yawanci yana kashe kashi 15 zuwa 20% fiye da ƙarfe na yau da kullun. Duk da haka, wannan yana faruwa ne ta hanyar ƙaruwar saurin injin, manyan yankewa, da tsawon rayuwar kayan aiki.

Ana iya ƙara wani adadin sulfur, phosphorus, gubar, calcium, selenium, tellurium da sauran abubuwa don inganta injin. A matsayin ci gaban fasahar injina, buƙatun injinan ƙarfe suna da matuƙar muhimmanci. Yana da babban tasiri a masana'antar.