Nyob rau hauv tus txheej txheem, impurities xws li sulfur, roj (nitrogen, hydrogen, oxygen), tshauv, volatile teeb meem, thiab noo noo tsis tsuas yog txo, tab sis lawv purity yog zoo dua.Nws zoo dua zam qhov tshwm sim ntawm nitrogen pores.Nyob rau tib lub sijhawm, nws kuj ua rau cov pa roj carbon atom hloov pauv los ntawm qhov qub kev tsis sib haum xeeb thiab kev tsis sib haum xeeb mus rau qhov kev txiav txim txheej txheej, kom feem ntau ntawm cov pa roj carbon atoms tuaj yeem ua lub zog tsav zoo rau graphitization.

Cov txheej txheem hu ua graphitization.Qhov saum npoo ntawm lub recarburizer tsis muaj qhov kub thiab txias graphitization yog them nrog ib txheej nyias ntawm cov hmoov tshauv, yog li ntawd qhov tshwm sim ntawm kev sib cais ncaj qha hauv cov hlau molten yeej tsis muaj nyob, thiab carbon tsuas tuaj yeem maj mam diffuse thiab yaj hauv molten hlau nrog lub sijhawm dhau los.Lub sij hawm dissolution ntawm lub recarburizer yog nce, thiab qhov nqus ntawm cov recarburizer yog txo.

Tsuas yog cov graphitized recarburizer tuaj yeem yaj cov pa roj carbon atoms sai sai hauv cov hlau molten, thiab thaum cov hlau molten solidifies, nws yog adsorbed ntawm lub nucleation core uas tsim los ntawm inoculation nyob rau hauv qhov kev txiav txim ntawm ib tug muaj zog nucleation tsav quab yuam, thiab hlob mus rau hauv graphite.Yog hais tias qhov kev xaiv recarburizer tsis tau txais kev kho mob siab graphitization, lub graphitization tsav peev xwm ntawm carbon atoms yuav raug txo kom tsawg, thiab lub peev xwm graphitization yuav tsis muaj zog.

Txawm hais tias tib cov pa roj carbon ntau tuaj yeem ua tiav, qhov zoo ntawm cov khoom sib txawv kiag li.
Muaj ntau ntau hom recarburizers, thiab muaj ntau yam ntaub ntawv uas yuav siv tau raws li cam khwb cia hlau recarburizers.Cov txheej txheem ntau lawm ntawm recarburizers kuj txawv, qhov zoo sib txawv heev, thiab tus nqi sib txawv kuj loj heev.Casting khoom geometry thiab cov kev xav tau zoo, kev xaiv raug ntawm recarburizer.