Yuav daws cov teeb meem li cas thaum Steelmaking

2. Vim li cas deoxidation tsim nyog rau molten hlau?

Yog hais tias cov hlau tsis deoxidized, cov qauv solidification ntawm nruam casting billet yuav tsis ua raws li qhov yuav tsum tau ua. Cov ntsiab lus oxygen siab hauv cov hlau kuj tuaj yeem tsim cov teeb meem xws li cov npuas subcutaneous thiab xoob, thiab ua rau muaj kev phom sij ntau dua ntawm cov sulfur. Cov oxide inclusions generated nyob rau hauv cov hlau, uas yuav txo tau nws mechanical zog xws li plasticity thiab cuam tshuam toughness, yog li ntawd, ntau tshaj oxygen nyob rau hauv cov hlau yuav tsum tau muab tshem tawm.

3. Yuav ua li cas tiv thaiv tawg tawg thaum lub tshuab tshuab?

• Tswj qhov kub ntawm lub pas dej molten zoo.
• Tswj (TFe) los tiv thaiv kev sib sau.
• Thaum splashing tshwm sim thaum lub tshuab tshuab, tsis txhob yooj yim txo cov phom.
• Thaum lub cub tawg kub siab, cov tshauv dawb tuaj yeem muab ntxiv kom tsim nyog kom thicken lub slag thaum nqa rab phom.

4. Dab tsi yog vim li cas rau lub qhov cub hauv ob sab phlu puas?

• Kev cuam tshuam thiab cov neeg kho tshuab hnav ntawm lub qhov cub hauv ob sab phlu tshwm sim los ntawm cov hlau nplaum thiab cov hlau molten.
• Nqus thiab gas flushing ntawm molten steel thiab slag.
• Chemical erosion ntawm lub qhov cub hauv ob sab phlu los ntawm slag.
• Cracking thiab tev ntawm lub qhov cub hauv ob sab phlu vim qhov txias txias, hloov cua sov sai, thiab cov qauv kev hloov pauv.
• Mechanical peeling thaum lub sij hawm pib ntawm lub cub tawg pib.
• Oxidation ntawm carbon nyob rau hauv lub hauv ob sab phlu cib.

5. Piav qhia luv luv txog cov yam ntxwv thiab cov ntxhia muaj pes tsawg leeg ntawm slag nyob rau hauv nruab nrab theem ntawm smelting?

Nyob rau hauv nruab nrab theem ntawm smelting, cov pa roj carbon thiab oxygen cov tshuaj nyob rau hauv lub cub tawg yog khaus, thiab cov slag yog nquag mus "qhuav rov qab". Nws cov yam ntxwv yog siab alkalinity thiab cov ntsiab lus tsawg ntawm ferrous oxide. Cov ntxhia muaj pes tsawg leeg ntawm slag yog dicalcium silicate thiab tricalcium silicate. Thaum cov txiv qaub ntxiv rau ntau, muaj CaO dawb ntau dua. Qhov siab dua qhov alkalinity, qhov ntau dua ntawm tricalcium silicate thiab CaO dawb ntau dua, uas yog qhov tsis zoo rau cov nyhuv smelting.

6. Qhia luv luv txog cov hauv paus ntsiab lus ntawm kev xaiv cov khoom siv raw rau steelmaking?

Ntau qhov kev coj ua ntau lawm ob qho tib si hauv tebchaws thiab thoob ntiaj teb tau ua pov thawj tias kev ua raws li txoj cai tswjfwm cov khoom siv yog ib txoj hauv kev tseem ceeb kom ua tiav automation hauv cov txheej txheem converter steelmaking thiab txhim kho ntau yam kev qhia thiab kev lag luam. Cov ntaub ntawv nyoos feem ntau suav nrog cov hlau molten, cov hlau nplaum, cov khoom siv slag, ferroalloys, thiab oxygen. Kev xaiv tsim nyog ntawm cov khoom siv raw yog ua raws li qib smelting steel, kev ua haujlwm thev naus laus zis, thiab qib khoom siv kom ua tiav lub hauv paus ntsiab lus ntawm cov khoom siv qis thiab cov khoom siv zoo.

7. Dab tsi yog txoj hauv kev tseem ceeb los txo qhov kev puas tsuaj?

• Refined cov ntaub ntawv txoj cai, txo slag ntim.
• Tsim nyog slag ua system.
• Txais qhov tsim nyog oxygen mov system thiab chaw thau khoom kom txo cov neeg kho tshuab txaws.
• Txais siv thev naus laus zis thev naus laus zis, siv cov khoom seem hlau ntau dua, thiab txo cov tshuaj tua hluav taws.
• Txais cov txheej txheem tsim nyog ob npaug.

8. Kev ua haujlwm qis slag yog dab tsi thiab qhov zoo ntawm kev ua haujlwm slag tsawg yog dab tsi?

Thaum cov kua qaub ntxiv rau ib tuj ntawm cov khoom siv hlau tsawg dua 20kg / t, thiab cov slag tsim ib tuj ntawm cov hlau yog tsawg dua 30kg / t, nws yog ib qho kev ua haujlwm qis.

• Cov txiv qaub ntxiv yog me me, txo qis slag nqi thiab siv zog, thiab txo cov pa phem.
• Kev siv siab ntawm cov pa oxygen, cov ntsiab lus tsis tshua muaj cov ntsiab lus oxygen, siab residual manganese, thiab siab alloy yield.
• Txo cov erosion ntawm qhov cub hauv ob sab phlu thiab txo qhov txaws.

9. Dab tsi yog txoj hauv kev los txo cov oxide nyob hauv cov hlau?

• Txhawm rau txo cov oxide nyob hauv cov hlau, cov khoom siv sab nraud yuav tsum raug txo kom tsawg tshaj plaws.
• Txhim kho qhov purity ntawm raw khoom.
• Kev siv cov txheej txheem smelting tsim nyog, deoxidation systems, thiab refining txheej txheem rau molten steel raws li cov kev cai ntawm qib steel. Txhim kho qhov zoo thiab kev ua tau zoo ntawm cov khoom siv refractory siv nyob rau hauv converters thiab pouring systems.
• Txo thiab tiv thaiv cov oxidation theem nrab ntawm cov hlau molten, tswj qhov kub thiab txias, siv kev tiv thaiv tag nrho, thiab xaiv cov slag tiv thaiv kev ua haujlwm siab, xaiv cov hlau tsim nyog.