Ramming Mass: Tus phab ej tsis tau txais kev qhuas rau cov kev xav tau kev lag luam kub siab

Hauv ntiaj teb ntawm kev lag luam kub siab, kev nrhiav cov ntaub ntawv txhim khu kev qha uas tuaj yeem tiv taus qhov kub siab heev, xeb, thiab hnav yog qhov tseem ceeb heev. Qhov ntawd yog qhovkev sib tsoo loj(tseem hu ua ramming mix) los txog. Cov khoom siv refractory tsis muaj duab no, ua los ntawm cov khoom siv refractory zoo, hmoov, thiab cov binders, tau dhau los ua ib feem tseem ceeb ntawm ntau cov txheej txheem kev lag luam. Cia peb tshawb nrhiav nws cov kev siv tseem ceeb thiab vim li cas nws thiaj li yog qhov kev xaiv zoo tshaj plaws rau cov lag luam thoob ntiaj teb.​

1. Kev Ua Hlau: Lub hauv paus ntawm kev tsim hlau thiab hlau

Kev lag luam metallurgy vam khom ntau rau kev sib tsoo ntawm cov khoom siv los ua kom cov haujlwm ua haujlwm tau zoo. Ib qho ntawm nws cov kev siv tseem ceeb yog nyob rau hauv cov ntaub thaiv hluav taws xob. Cov cib magnesium ib txwm muaj ib zaug, tab sis cov khoom siv sib tsoo ntawm cov khoom siv magnesium tau los ua tus thawj coj. Nws tuaj yeem sib tsoo nruj rau hauv phab ntsa sab hauv ntawm lub cub tawg, tsim ib txheej tsis muaj qhov tsis sib xws, ntom ntom. Cov txheej no tiv taus qhov kub heev (txog li 1,800 ° C) thiab kev xeb ntawm cov hlau yaj.

Cov hlau uas raug tsoo kuj ua haujlwm ua tus "saib xyuas" rau cov kav hlau (cov kav dej uas nqa cov hlau uas yaj). Cov hlau uas raug tsoo muaj zog heev thiab xeb, tab sis cov kav hlau uas raug tsoo, nrog rau nws cov alumina ntau, tseem ruaj khov. Nws tiv thaiv kev xau thiab tawg, ua kom cov hlau ntws tas li. Yog tsis muaj nws, kev kho cov kav hlau ntau zaus yuav ua rau kev tsim khoom nres thiab ua rau cov nuj nqis ntau ntxiv.

2. Kev Lag Luam Tshuaj: Kev Ua Kom Ruaj Khov Hauv Cov Kev Tshwm Sim Loj Hlob

Hauv kev lag luam tshuaj lom neeg, qhov twg cov cub tawg siv rau cov txheej txheem xws li kev tsim tshuaj lom neeg thiab cov khoom siv cua sov, cov khoom siv ramming yog tus khub txhim khu kev qha. Nws yog cov khoom siv tseem ceeb hauv kev tsim cov cub tawg. Thaum tsim cov cub tawg tshuaj, cov khoom siv ramming yog siv los ua kab sab hauv. Nws cov khoom rwb thaiv cua sov zoo heev ua rau lub cub tawg sab hauv kub ruaj khov, thaum nws tiv taus kev yaig tshuaj lom neeg tiv thaiv cov qauv ntawm lub cub tawg.
Tsis tas li ntawd xwb, kev siv cov khoom siv los ua kom cov khoom sib xyaw ua ke (ramming mass) yog ib qho zoo heev rau kev kho cov khoom siv crucibles thiab ladles. Cov khoom siv Crucibles (siv los yaj cov hlau) thiab ladles (siv los thauj cov khoom uas yaj) feem ntau yuav tawg tom qab siv ntau zaus. Tsis txhob hloov lawv (uas kim heev), kev siv cov khoom siv los ua kom cov khoom sib xyaw ua ke (ramming mass) tuaj yeem siv los sau cov kab nrib pleb. Ib txoj kev tshawb fawb qhia tau tias kev kho cov hlau ladle uas muaj cov khoom sib xyaw ua ke (ramming mass) txo cov nqi hloov pauv los ntawm 70% thiab ua kom lub ladle siv tau ntev li 40%.