1. Lub tshuab ua kom cov pa roj carbon ntau ntxiv hauv cov hlau molten, tshwj xeeb tshaj yog nyob rau hauv hluav taws xob rauv melting, tuaj yeem ua rau graphite crystal nuclei. Qhov sib ntxiv ntawm silicon carbide hauv cupola melting kuj tuaj yeem ua rau lub sijhawm ntev graphite nucleation thiab kev faib tawm ntawm graphite hauv molten hlau, thaum txo cov oxidation ntawm cov hlau molten;
2. Carbonization yog ib qho kev ntsuas zoo los tiv thaiv lossis txo qis kev xav. Vim lub graphitization expansion tshwm sim thaum lub sij hawm solidification txheej txheem ntawm molten hlau, ib tug zoo graphitization yuav txo tau tus nyiam ntawm molten hlau kom ntsws;
3. Nyob rau hauv cov ntsiab lus siab carbon cov ntsiab lus, thiaj li yuav tau txais high-strength grey cam khwb cia hlau castings, cov txheej txheem melting adopts txheej txheem ntawm ntxiv tag nrho cov seem steel thiab graphitized carburetor, ua lub molten hlau nqus tsev vacuum. Melting yuav tsum siv cov ntaub ntawv huv si yam tsis muaj roj stains kom tsis txhob tshwm sim ntawm hluav taws xob los yog cov khoom siv ntau dhau.
