Femotxheej txheem--cov txheej txheem los daws cov txheej txheem smelting txawv txav
Cov xwm txheej txawv txav, ua rau, qhov tshwm sim thiab kev kho mob hauv cov txheej txheem smelting yog:
(1) Lwm qhov tshwm sim yog qhov qub, tab sis muaj ntau qhov txaws. Qhov no yog tshwm sim los ntawm cov dej noo nyob rau hauv lub cub tawg nqi, ntau ntau chav tsev calorific nqi, los yog noo noo nyob rau hauv cov xuab zeb zes. Qhov tshwm sim no tuaj yeem yooj yim ua rau lub qhov cub tawg lossis qhov cub hluav taws xob ua rau cov neeg raug mob, ua rau cov ntsiab lus ntawm silicon ntawm cov alloy siab dhau. Yog tias tus nqi calorific siab, nws yog ib qho tsim nyog yuav tsum tau txo cov khoom txhuas thiab ua kom cov ferrosilicon hmoov ntau ntxiv; Yog hais tias lub cub tawg los yog xuab zeb zes yog moist, qhov teeb meem ziab ntawm lub cub tawg thiab xuab zeb zes yuav tsum tau daws.
(2) Cov tshuaj tiv thaiv yog khaus heev, nrog ntau cov txaws, lub sij hawm cov tshuaj tiv thaiv luv luv, thiab nws xaus sai; Tom qab qhov kawg, cov pa luam yeeb yog ci, slag yog nplaum, thiab xim yog xiav-ntsuab. Cov qauv me me hlau molybdenum coj tawm yog yooj yim tawg tom qab txias, thiab muaj cov hnub qub ci ntsa iab ntawm ntu ntu. nyiaj dawb. Qhov no yog cov tsos mob ntawm kev txo tus neeg sawv cev ntau dhau, uas feem ntau ua rau siab molybdenum bottoming hauv silicon alloy. Lub sijhawm no, tus nqi txo tus neeg sawv cev yuav tsum raug txo, feem ntau yog 0.3-0.7kg ib batch.
(3) Cov tshuaj tiv thaiv yog du, cov tshuaj tiv thaiv tsis tu ncua, cov pa luam yeeb yog xim av tsaus thiab maj mam nce. Lub sijhawm tshuaj tiv thaiv ntev, qhov kawg tsis meej thiab kos tawm. Tom qab lub cub tawg tau rub tawm, npuas tshwm nyob rau saum npoo ntawm slag nto ntawm ferromolybdenum ingot thiab muaj hluav taws. Tshem tawm ib qho me me ntawm cov qauv ferromolybdenum los ntawm qhov tsis muaj ferromolybdenum ingot thiab txias nws, thiab tom qab ntawd yuav muaj cov xim av tsaus nti dai rau saum npoo. Cov qauv me me ntawm ferromolybdenum yog qhov nyuaj heev, ntu ntu tsis sib xws, thiab nws yog grey-dub. Qhov no yog ib qho kev qhia ntawm kev txo tus neeg sawv cev tsis txaus. Qhov no yuav ua rau cov alloys uas muaj cov ntsiab lus siab molybdenum thiab cov ntsiab lus silicon tsawg (tsawg dua 0). slag, thiab ntau hlau hais. Lub sijhawm no, yuav tsum tau ntxiv cov khoom hlau ntau ntxiv. Tus neeg sawv cev txo qis feem ntau ntxiv 0.2-0.5kg rau txhua pob khoom.
(4) Cov tshuaj tiv thaiv maj mam, tsis muaj pa luam yeeb pom tseeb, thiab lub sijhawm tshuaj tiv thaiv ntev. Qhov no yog tshwm sim los ntawm tsis txaus calorific nqi ntawm tus nqi. Qhov no feem ntau ua rau cov alloys nrog cov ntsiab lus molybdenum siab thiab cov ntsiab lus silicon siab. 30 feeb tom qab qhov kawg ntawm cov hlau ingot stratification los yog cais cov tshuaj tiv thaiv yog lub sedation thiab teem sij hawm ntawm cov hlau hais kom paub meej tias cov ntsiab lus molybdenum nyob rau hauv lub slag yog qis dua 0.35%. Qhib qhov chaw nres nkoj slag, cov slag ntws mus rau hauv lub tank slag, thiab coj mus kuaj los soj ntsuam cov ntsiab lus molybdenum. Cov nplua nuj slag saum toj no 0.35% rov qab mus rau smelting. Depleted residue tuaj yeem muab pov tseg lossis siv dav dav. Tom qab tso lub slag, rub lub cub tawg chim thiab siv ib rab diav hlau coj cov qauv hlau los ntawm cov hlau ingot rau ntawm cov xuab zeb. Qhov saum npoo ntawm cov hlau yog du, nrog micro-ntsuab slag, qhov tawg yog ntom thiab silver-grey, cov muaju zoo, thiab tsis muaj hnub qub ci, qhia tias qhov zoo ntawm ferromolybdenum yog qhov zoo. Qhov qub alloy thiab slag muaj pes tsawg leeg yog raws li nram no. , nyob rau lub sijhawm no, qhov loj me me, muaj pes tsawg leeg thiab cov ntsiab lus oxygen ntawm tus nqi yuav tsum raug kuaj xyuas, thiab tom qab ntawd qhov sib piv yuav tsum tau hloov kho raws li qhov xwm txheej tshwj xeeb.
30 feeb tom qab ua tiav cov tshuaj tiv thaiv yog lub sedation thiab kho lub sij hawm ntawm cov hlau hais los xyuas kom meej tias molybdenum cov ntsiab lus nyob rau hauv lub slag yog tsawg dua 0.35%. Qhib qhov chaw nres nkoj slag, cov slag ntws mus rau hauv lub tank slag, thiab coj mus kuaj los soj ntsuam cov ntsiab lus molybdenum. Cov nplua nuj slag saum toj no 0.35% rov qab mus rau smelting. Depleted residue tuaj yeem muab pov tseg lossis siv dav dav. Tom qab tso lub slag, rub lub cub tawg chim thiab siv ib rab diav hlau coj cov qauv hlau los ntawm cov hlau ingot rau ntawm cov xuab zeb. Qhov saum npoo ntawm cov hlau yog du, nrog micro-ntsuab slag, cov pob txha tawg yog ntom thiab nyiaj-grey, cov muaju me me, thiab tsis muaj hnub qub ci, qhia tias qhov zoo ntawm ferromolybdenum yog qhov zoo. Qhov qub alloy thiab slag muaj pes tsawg leeg yog raws li nram no.
