Lub luag haujlwm ntawm carburant yog txhawm rau nce cov ntsiab lus carbon ntawm castings thiab steel castings. Raws li lub npe qhia, carburant nce cov ntsiab lus carbon hauv molten hlau. Piv txwv li, nws yog feem ntau siv rau smelt npua hlau, seem hlau, cov ntaub ntawv siv dua, thiab hlau nrog cov ntsiab lus siab carbon. Carburizer yog qhov tseem ceeb hauv kev casting, thiab nws cov haujlwm muaj xws li:

1. Kev them nyiaj rau cov ntsiab lus ntawm cov pa roj carbon: ua rau cov pa roj carbon monoxide poob vim kev smelting mus sij hawm ntev kom ntseeg tau tias cov ntsiab lus carbon ntawm cov hlau molten ua tau raws li tus qauv.

2. Txhim kho qhov kev ua tau zoo ntawm cov hlau molten: ua kom cov graphite nucleation core, txo qhov nyiam ntawm cov hlau cam khwb cia hlau, ua kom zoo dua cov nplej, thiab txhim kho cov khoom siv thiab cov khoom siv ntawm cov hlau cam khwb cia.

3. Txhim kho qhov zoo ntawm castings: txo qhov pores thiab shrinkage, txhim kho lub zog thiab toughness, thiab txhim kho nto zoo thiab txhua yam khoom.

4. Txhim kho kev ua haujlwm zoo: txo cov slag ntim, ua kom yooj yim rau kev tshem tawm slag, txhim kho cov txheej txheem casting, thiab txo cov nqi thiab kev siv zog.

5. Lwm yam haujlwm: nce cov khoom seem hlau, txo cov nqi casting; txo cov cua sov phab ntsa yaig thiab ncua kev pab cuam lub neej.

Peb lub tuam txhab tuaj yeem muab cov khoom lag luam ruaj khov thiab cov nqi sib tw roj av coke thiab graphitized petroleum coke (artificial graphite) carburant. Zoo siab txais tos koj los tham.