Dab tsi yog Iron Silicon 75 hauv chemistry?

Chemical Identity thiab Composition ntawm FeSi 75

Hauv chemistry, Iron Silicon 75, feem ntau sau FeSi 75, tsis yog ib qho tshuaj sib xyaw nrog cov qauv ruaj khov tab sis cov hlau - silicon alloy muaj kwv yees li 73 mus rau 78 qhov hnyav feem pua ​​silicon thiab txog 22 mus rau 27 qhov hnyav feem pua ​​​​ntawm cov hlau, nrog rau cov kab mob xws li txhuas, calcium thiab carbon uas nws qib nyob ntawm txoj kev tsim khoom. Ob lub ntsiab hlau tsim intermetallic theem sib xyaw nrog silicon- cov cheeb tsam nplua nuj, yog li cov khoom muaj cov qauv hlau crystalline es tsis yog ib qho molecular.

Chemical Behavior hauv Steelmaking

Cov silicon thiab hlau nyob rau hauv FeSi 75 yog metallurgically bonded, tsis chemically ua ke raws li nyob rau hauv ib tug molecule. Thaum cov hlau txuas ntxiv rau cov hlau molten, silicon oxidizes nyiam thiab reacts nrog yaj oxygen los ua silicon dioxide uas qhia rau slag. Qhov no tshem tawm cov pa oxygen los ntawm da dej thiab tiv thaiv cov roj tsis xws luag thiab porosity hauv cov khoom cam khwb cia. Cov ntsiab lus hlau ntawm cov hlau tsis sib haum rau cov reactivity ntawm silicon, uas ua rau tuav ruaj ntseg thiab txo fuming thaum ntxiv. Vim tias silicon kuj muaj kev sib raug zoo rau nitrogen, FeSi 75 txhawb micro-alloying thiab pab tswj qhov kawg chemistry ntawm cov hlau.

Classification thiab Metallurgical Role

FeSi 75 belongs rau tsev neeg ferroalloy, txhais tau tias yog hlau-raws li alloy nqa cov feem ntau ntawm cov khoom tsis yog{2}}ferrous. Nws lub luag haujlwm tseem ceeb hauv metallurgical yog deoxidation thiab micro-alloying nyob rau hauv steel thiab cam khwb cia hlau, leveraging silicon affinity rau oxygen thiab nitrogen. Silicon txhawb zog thiab hardenability, txhim kho fluidity nyob rau hauv casting, thiab ua raws li ib tug graphitizing ntsiab nyob rau hauv cam khwb cia hlau. FeSi 75 kuj yog cov khoom siv hauv paus rau inoculants thiab nodulizers siv nyob rau hauv cov khoom siv hlau, uas nws tau ua ke nrog magnesium lossis lwm yam khoom.

Yam khoom: Ferro Silicon Magnesium thiab Ferro Magnesium

Ferro Silicon Magnesium, abbreviated FeSiMg, yog ib qho alloy ntawm silicon, hlau thiab magnesium, feem ntau muaj 4 mus rau 25 feem pua ​​magnesium, thiab yog tus qauv nodulizer rau cov hlau ductile. Magnesium hloov graphite flakes mus rau hauv cov nodules kheej kheej, uas zoo heev txhim kho ductility thiab tensile lub zog. Nws feem ntau yog ntxiv rau hauv lub hau npog lossis chav kho mob vim tias magnesium vaporizes ntawm steelmaking kub, thiab nws tau muab los ua briquettes, cored hlau los yog granules los tswj cov tshuaj tiv thaiv.

Ferro Magnesium, luv luv FeMg, yog hlau -magnesium alloy muaj kwv yees li 20 mus rau 80 feem pua ​​magnesium, siv rau kev kho magnesium ncaj qha ntawm cov hlau molten thiab hlau. Piv nrog FeSiMg nws muab cov nyhuv magnesium muaj zog nrog cov khoom siv silicon tsawg, uas yog qhov tseem ceeb thaum cov silicon ntxiv yuav tsum tau khaws cia qis. Nws yog feem ntau pub los ntawm cored hlau los tswj cov tshuaj tiv thaiv thiab txo qhov kev poob qis, thiab nws yog siv rau kev kho cov hlau ductile, steel desulfurization thiab suav nrog kev hloov kho.

Kev xav txog kev ua lag luam thiab tus nqi

Tus nqi ntawm ferrosilicon yog tsav los ntawm cov nqi hluav taws xob hauv cov cheeb tsam smelting, tus nqi ntawm quartz thiab txo cov neeg ua haujlwm xws li coke, thiab qhov sib npaug ntawm cov hlau xav tau thiab cov peev txheej tsim tau. Vim tias ferrosilicon yog lub zog- cov khoom siv hnyav, cov nqi hluav taws xob hauv cheeb tsam thiab cov khoom siv hluav taws xob muaj qhov cuam tshuam ncaj qha rau cov zis thiab cov lus hais. Kev thov ua raws li lub voj voog hlau thiab qhov chaw tsim khoom, yog li cov nqi feem ntau ruaj khov thaum lub sij hawm tsim kho thiab kev tsim khoom thiab muag muag thaum cov khoom siv hlau poob qis. Ib qho kev hais tshwj xeeb tsuas yog siv tau rau hnub thiab kev lag luam uas nws tau muab, thiab cov neeg yuav khoom yuav tsum txheeb xyuas cov qib tam sim no tawm tsam cov ntawv luam tawm ua ntej kev npaj yuav khoom.

Cov lus nug nquag

Puas yog FeSi 75 yog ib qho sib xyaw lossis cov hlau?

Nws yog ib qho alloy, tsis yog stoichiometric compound. Cov silicon thiab hlau ua rau nws yog xim hlau crystalline theem thiab intermetallic yam tsis muaj cov qauv molecular ruaj khov.

Vim li cas silicon ntxiv rau molten steel?

Silicon muaj kev sib raug zoo rau oxygen. Nws tshem tawm cov pa oxygen uas ua rau silicon dioxide slag, tiv thaiv cov pa tsis xws luag, thiab nws kuj ntxiv dag zog thiab ua kom cov hlau zoo li micro- alloying.

Lub melting ntau ntawm FeSi 75 yog dab tsi?

Lub melting ntau yog kwv yees li ntawm 1200 txog 1300 degrees Celsius, nyob ntawm seb qhov sib npaug ntawm silicon - hlau thiab cov ntsiab lus me me.

Qhov txawv ntawm FeSiMg thiab FeMg yog dab tsi?

FeSiMg muab ob qho tib si silicon thiab magnesium thiab yog tus qauv ductile hlau nodulizer, thaum FeMg muab cov khoom siv magnesium thiab raug xaiv thaum xav tau cov nyhuv magnesium siab tshaj plaws nrog cov khoom siv silicon tsawg.

Dab tsi ua rau cov nqi ferrosilicon?

Cov tsav tsheb tseem ceeb yog cov nqi hluav taws xob, cov nqi raw khoom rau quartz thiab coke, txoj cai tsim khoom hauv cheeb tsam, thiab lub voj voog xav tau steel. Spot quotations yog lub sij hawm-sensitive thiab yuav tsum tau kuaj xyuas cov indices tam sim no.

Dab tsi yog cov ntsiab lus me me hauv FeSi 75?

Aluminium, calcium thiab carbon yog cov khoom me me ib txwm muaj, txhua tus feem ntau tuav ntawm lossis qis dua li 0.5 feem pua ​​​​hauv cov qib kev lag luam.