A cikin zamani masana'antu ka'idar ductile baƙin ƙarfe manhole murfi, za mu iya ƙirƙira ductile baƙin ƙarfe ta hanyar simintin karfe da ƙirƙira karfe, wanda aka yadu amfani a cikin inji masana'antu masana'antu a yau.A gaskiya ma, ka'idar ductile baƙin ƙarfe shine don samun graphite tare da siffar irin wannan ball ta hanyar tsarin spheroidization, wanda ke inganta aikin ƙarfe na simintin gyare-gyare, musamman ma filastik da taurinsa, wanda ya haifar da inganci fiye da carbon karfe.Koyaya, don rage farashi, ana ƙirƙira murfin magudanar baƙin ƙarfe gabaɗaya ta amfani da simintin ƙarfe da jabun ƙarfe.
Ƙarfin ƙwanƙwasa abu ne mai karye.Da fari dai, simintin ƙarfe yana nufin abun cikin carbon sama da 2.1% (tare da abun cikin carbon na 3.50-3.90% da tsarin ƙarfe na ferrite+pearlite).Idan abun cikin carbon yana da girma, tabbas taurinsa zai yi girma.Na biyu, spheroidizing da ductile iron yana nufin cewa girman barbashi na karfe yana raguwa, wanda kuma zai inganta ƙarfi da taurin kayan.Don haka gabaɗaya magana, taurin ƙarfe na ductile yana da girma sosai (tabbas ya fi na ƙarfe na yau da kullun).
Da fari dai, galibi ana amfani da manyan motoci wajen zirga-zirgar ababen hawa, don haka galibi ana zabar hulunan hulunan ƙarfe na ƙarfe, waɗanda ke da nauyin kusan tan 40;Wasu rufaffiyar rijiyoyin manhole suma suna iya cimma ƙarfin ɗaukar nauyi na kusan ton 25, wanda ya fi arha arha fiye da baƙin ƙarfe.Duk da haka, ductile iron manhole murfin yana da ingantacciyar lafiya.
Abu na biyu, idan aka kwatanta da hadaddiyar murfukan rijiyoyi, rufaffiyar magudanar baƙin ƙarfe sun fi yi wa ɓarayi hari.Tufafin ƙwanƙwasa baƙin ƙarfe ba wai kawai yana da ƙarfin ɗaukar nauyi ba, amma har ma yana mai da hankali kan ƙirar kowane dalla-dalla na murfin manhole baƙin ƙarfe, musamman dangane da aikin hana sata, da gaske tilasta barayi har zuwa inda ba su da hanyar farawa. kuma ba wanda zai iya sata.Wasu mutane na iya damuwa cewa murfin manhole na baƙin ƙarfe na iya yin ƙara mai ƙarfi yayin tuƙi, wanda ba shi da mahimmanci saboda mun riga mun yi la'akari da wannan batu a cikin ƙirarmu.Kowane murfin rami an yi maganin rage hayaniya kafin ya bar masana'anta, tare da keɓe matsalar gurɓacewar hayaniya gaba ɗaya na murfin maƙarƙashiyar ƙarfe.
A ƙarshe, ƙarfin ɗaukar nauyi na rufaffiyar mahaɗar manhole ya yi ƙanƙanta fiye da na murfin manhole baƙin ƙarfe.Don wurare kamar koren bel da titin titin da ba sa buƙatar matsi mai mahimmanci, farashin yin amfani da murfin manhole mai haɗaka ya yi ƙasa da na yin amfani da murfin manhole baƙin ƙarfe.
Lokacin aikawa: Agusta-10-2023
