Nyob rau hauv cov txheej txheem ntawm steelmaking thiab casting, desulfurization yog qhov txuas tseem ceeb:
Tiv thaiv kub brithleness kub:
Sulfur muaj feem ntau nyob rau hauv daim ntawv ntawm hlau sulfide (fes) hauv cov hlau thiab nrum hlau. Qhov tsawg-melting eutectic (melting taw tes ntawm txog 985 degree) tsim los ntawm fes thiab hlau tau muab faib rau hauv thaj tsam nplej. Thaum steel lossis kab tsuag tau raug rau kev ua kom sov (xws li forging thiab dov), cov khoom siv los ua cov khoom kub siab, ua rau nws lub neej zoo thiab ua rau nws lub neej zoo thiab kev pabcuam.
Zam kev txias brittleness:
Sulphur yuav tseem muaj kev cuam tshuam nrog lwm cov ntsiab lus hauv cov hlau (xws li manganese) los ua cov tawv thiab khov kho sulfide. Cov kev suav nrog no yuav txo cov plaw yas thiab tawv ntawm cov khoom txias ntawm cov hlau lossis cov kab mob khaub thuas, ua kom muaj kev pheej hmoo ntawm cov khoom lag luam ntawm cov khoom ntawm cov khoom kub tsawg.
Txhim kho kev ua lag luam:
Cov hlau thiab cov khoom siv los nrog cov ntsiab lus tseem ceeb Desulfurization tuaj yeem txhim kho cov kev txiav kev txiav ntawm cov ntaub ntawv, txhim kho machining qhov tseeb thiab yog li txo cov nqi machining.
Ntsib cov kev xav tau tshwj xeeb:
Rau qee hom phiaj tshwj xeeb ntawm cov hlau thiab cov khoom siv, xws li hlau rau aerospace thiab nuclear zog, muaj qhov nruj heev tsis muaj zog ntawm cov lus faj sulfur. Txhawm rau kom tau raws li cov cai kev kawm tshwj xeeb, kev kho tsis tau zoo yuav tsum ua kom paub tseeb tias cov khoom ua ntej cov qauv thiab cov lus qhia tshwj xeeb.
Txhim kho cov khoom lag luam purity:
Desulfurization tuaj yeem txo cov ntsiab lus tsis huv hauv cov hlau thiab cam khwb cia hlau, txhim kho cov ntaub ntawv ua haujlwm, xws li corrosion tsis kam thiab oxidation tsis kam.
Hauv steelmaking thiab cam khwb cia, hauv qab no alloy desulfurizers muaj feem ntau siv
calcium silicon alloy
Nws yog ib feem siv alloy desulfurizer. Lub caij nyoog calcium hauv Silicon Calcium alloy muaj kev muaj zog muaj zog rau cov txiv leej txiv lossis cov neeg ua haujlwm tau), yog li ua tiav Desulfurization. Thaum lub sij hawm cov txheej txheem kev tshuaj tiv thaiv,calcium silicon alloyKuj tseem tuaj yeem ua ib lub luag haujlwm deoxidation, purify tus molten hlau, thiab txhim kho cov nyhuv desulfurocurization. Tsis tas li ntawd, cov khoom lag luam tsim tau muaj qhov yooj yim thiab yog qhov yooj yim kom ntab mus rau saum npoo ntawm cov hlau molten thiab nkag mus rau hauv cov nplais, uas yooj yim tshem tawm.
Ferro manganese alloy
Manganese thiab leej faj tuaj yeem tsim manganese sulfide (MNS) nrog lub siab melting point (li 1600 degree). Thaum lub sij hawm steelmaking thiab cov txheej txheem casting, tom qab ntxivferro manganese alloy, Manganese yuav hnov mob nrog cov leej faj ua ntej thiab txhim kho leej faj rau mns. MNS tau muab faib rau hauv cov hlau matrix hauv cov khoom zoo. Piv nrog fes, nws muaj tsawg dua kev phom sij rau cov hlau hluavtab thiab tseem tuaj yeem txhim kho kev txiav cov hlau rau ib qho.
calcium magnesium alloy
Magnesium muaj qhov muaj zog desulfurization muaj peev xwm thiab reacts nrog cov leej faj los ua cov ntawv magnesium (mgs). Calcium magnesium alloy sib xyaw ua ke ntawm denulfurization zoo ntawm magnesium thiab calcium. Nws tsis tsuas yog muaj qhov siab desulfolurization efficiency thiab ceev ceev ceev ceev ceev, tab sis kuj muaj qhov muaj kev ruaj khov ntawm MGS thiab CAS, uas yooj yim cais los ntawm cov hlau molten. Nyob rau tib lub sijhawm, magnesium calcium alloy kuj tseem tuaj yeem cuam tshuam rau morphology thiab faib cov kev suav nrog thiab txhim kho cov khoom ntawm cov hlau.
Tsis tshua muaj ntiaj teb alloy
Tsis tshua muaj lub ntiaj teb (xws li cerium, lanthhanum, thiab lwm yam) muaj ib qho siab rau cov leej txiv leej thiab tuaj yeem ruaj khov lub ntiaj teb sulfur. Thaum siv raws li desulfurizer,Tsis tshua muaj ntiaj teb alloysTsis tuaj yeem tshem tawm cov leeg ntawm Molten Steel lossis cov hlau ua kom zoo nkauj, txhim kho cov morphology, tab sis kuj txhim kho lub zog, kev ua kom muaj zog thiab qaug zog tsis kam ntawm cov hlau.
