A cikin samar da Iron Ductile (wanda kuma aka sani da Ductile Iron), amfani da na'urori masu inganci yana da mahimmanci don cimma abubuwan da ake so na ƙarshen samfurin.Recarburizer da aka saba amfani dashi shinegraphite petroleum coke (GPC), wanda aka yi daga man fetur coke ta hanyar yanayin zafi mai zafi.

Lokacin zabar recarburiser don samar da ƙarfe na ductile, dole ne a yi la'akari da abubuwa da yawa.Mafi mahimmancin waɗannan abubuwan sune ƙayyadaddun abun ciki na carbon, abun cikin sulfur, abun cikin ash, abun cikin al'amari maras tabbas, abun cikin nitrogen da abun cikin hydrogen.

Kafaffen abun ciki na carbon shine adadin carbon ɗin da ya rage a cikin graphite petroleum coke bayan an kona duk abin da ke faruwa da toka.Mafi girman ƙayyadaddun abun ciki na carbon, mafi kyawun mai recarburiser yana haɓaka abun cikin carbon a cikin narkakken ƙarfe.graphite man coke tare da kafaffen abun ciki na carbon aƙalla 98% ana ba da shawarar don samar da baƙin ƙarfe ductile.

Sulfur ƙazanta ce ta gama gari a cikin graphite petroleum coke kuma kasancewar sa na iya yin illa ga abubuwan ƙarshe na baƙin ƙarfe.Sabili da haka, yana da mahimmanci a zaɓi graphite petroleum coke tare da ƙaramin sulfur (yawanci ƙasa da 1%).

Abubuwan da ke cikin ash shine adadin abubuwan da ba za a iya ƙone su ba da ke cikin graphite petroleum coke.Babban abun cikin ash yana haifar da slag a cikin tanderun, wanda ya kara yawan farashi kuma yana rage yawan aiki.Wannan shine dalilin da ya sa ana ba da shawarar yin amfani da graphite petroleum coke tare da abun cikin ash a ƙasa da 0.5%.

Halin da ba a iya jurewa ya haɗa da duk wani iskar gas ko ruwa da aka saki lokacin da graphite petroleum coke ya yi zafi.Mafi girman abun ciki mai canzawa yana nuna cewa graphite petroleum coke na iya sakin iskar gas, wanda zai iya haifar da porosity a cikin samfurin ƙarshe.Don haka, ya kamata a yi amfani da graphite petroleum coke tare da abun ciki mai canzawa wanda bai wuce 1.5% ba.

Abubuwan da ke cikin Nitrogen wani ƙazanta ne a cikin graphite petroleum coke wanda ya kamata a kiyaye ƙasa da shi saboda yana iya shafar ƙayyadaddun kayan aikin ƙarfe na simintin nodular.graphite man coke tare da ƙasa da 1.5% nitrogen abun ciki shi ne manufa domin nodular simintin samar da baƙin ƙarfe.

A ƙarshe, abun ciki na hydrogen wani abu ne wanda dole ne a yi la'akari da shi lokacin zabar mai haɓaka carbon don samar da simintin ƙarfe na nodular.Maɗaukakin matakan hydrogen na iya haifar da ƙarar ɓarna da rage ductility.graphite man coke tare da hydrogen abun ciki na kasa da 0.5% an fi so.

A taƙaice, samar da simintin ƙarfe na nodular yana buƙatar babban mai ɗaga carbon wanda ya dace da takamaiman buƙatu don ƙayyadaddun abun ciki na carbon, abun cikin sulfur, abun cikin ash, al'amarin mara ƙarfi, abun cikin nitrogen, da abun cikin hydrogen.Yin amfani da graphite petroleum coke wanda ya cika waɗannan buƙatun zai tabbatar da samar da simintin simintin gyare-gyaren nodular mai inganci, wanda kuma aka sani da Ductil Iron ko SG iron.