Dibikomoka kuri peteroli, imiti n’inganda zingufu zikenera umubare munini wibyuma byo hasi kugirango ushushanye kandi utange ibikoresho bitandukanye byo gukora no kubika nka gaze ya peteroli yamazi, amoniya yuzuye, ogisijeni yamazi na azote yuzuye.
Dukurikije gahunda y’imyaka 12 y’Ubushinwa, iterambere ry’ingufu za peteroli rizashyirwa mu bikorwa kandi iterambere ry’umutungo wa peteroli na gaze ryihuta mu myaka itanu iri imbere. Ibi bizatanga isoko ryagutse niterambere ryiterambere ryinganda zinganda nogukora ibikoresho byo kubika ibicuruzwa bitangwa nubushyuhe buke, kandi bizanateza imbere iterambereQ355D ubushyuhe buke bwihanganira urukiramendeibikoresho. Nkuko imiyoboro yubushyuhe buke isaba ibicuruzwa kutagira imbaraga nyinshi gusa ahubwo no gukomera kwinshi nubushyuhe buke, imiyoboro yubushyuhe buke isaba ubuziranenge bwibyuma, kandi hamwe nimpuzandengo yubushyuhe, ubwiza bwibyuma nabwo buri hejuru. Q355Eultra-low ubushyuhe kare kareyatejwe imbere kandi yarateguwe. Icyuma cya bilet kirashobora gukoreshwa muburyo butaziguye nkumuyoboro wibyuma bidafite icyerekezo cyo gutanga imiterere. Ibikorwa byo gukora birimo ingingo eshatu zikurikira:
(1)Amashanyarazi ya arc itanura: ibyuma bishaje hamwe nicyuma cyingurube bikoreshwa nkaibikoresho fatizo, muri byo ibyuma bishaje bingana na 60-40% naho ibyuma byingurube bingana na 30-40%. Kwifashisha ibyiza bya alkaline nyinshi, ubushyuhe buke hamwe na okiside ya fer yo hejuru ya ultra-high power power arc arc itanura, gukurura cyane okisijeni ya decarburisation hamwe nimbunda ya ogisijeni ya bundle kurukuta rwitanura, no gushonga amazi yambere akora ibyuma hamwe nimbogamizi nyinshi hamwe na ultra-high power power power arc itanura, ibintu byangiza fosifore, hydrogène, azote hamwe nubutare butari ibyuma mubyuma byashongeshejwe birashobora gukurwaho neza. Iherezo rya karubone yicyuma gishongeshejwe mu itanura ryamashanyarazi arc <0.02%, fosifore <0.002%; Kwangiza cyane ibyuma bishongeshejwe bikorwa mugikorwa cyo gukata itanura ryamashanyarazi, hanyuma umupira wa A1 na karbasi ukongerwaho kugirango ukore pre deoxidation.
Ibirimo bya aluminiyumu mu byuma bishongeshejwe bigenzurwa kuri 0.09 ~ 1,4%, ku buryo ibyinjira bya Al203 byakozwe mu cyuma cya mbere cyashongeshejwe bifite igihe gihagije cyo kureremba, mu gihe ibirimo aluminiyumu yo mu cyuma cya billet nyuma yo gutunganya LF, kuvura VD no kuvura bikomeje. igera kuri 0.020 ~ 0.040%, irinda kongeramo Al203 ikozwe na okiside ya aluminium mugikorwa cyo gutunganya LF. Isahani ya nikel ihwanye na 25 ~ 30% yumusemburo wose wongewe kumurongo wo kuvanga; Mugihe ibirimo karubone birenze 0.02%, ibyuka bya karubone byicyuma gike cyane ntigishobora guhaza 0.05 ~ 0.08%. Ariko rero, kugirango ugabanye okiside yicyuma gishongeshejwe, birakenewe kugenzura umwuka wa ogisijeni uhuha w’imbunda ya ogisijeni y’urukuta kugira ngo ugenzure karuboni y’ibyuma bishongeshejwe munsi ya 0.02%; Iyo ibirimo fosifore bingana na 0.002%, ibirimo fosifore yibicuruzwa bizagera kuri hejuru ya 0.006%, ibyo bikaba byongera ibintu byangiza fosifore kandi bikagira ingaruka ku bushyuhe buke bw’icyuma bitewe na dephosifora ya fosifore irimo slag. kuva ku itanura ry'amashanyarazi gukanda no kongeramo ferroalloy mugihe cyo gutunganya LF. Ubushyuhe bwo gukanda bw itanura ryamashanyarazi arc ni 1650 ~ 1670 and, naho gukanda hasi ya eccentric (EBT) bikoreshwa mukurinda icyuma cya oxyde kwinjira mu itanura ritunganya LF.
(2)Nyuma yo gutunganya LF, ibiryo bigaburira insinga zigaburira 0,20 ~ 0.25kg / t CA ya cyuma ya CA yicyuma kugirango yamagane umwanda kandi itume ibyinjizwa mubyuma byashongeshejwe biba serefegitura. Nyuma yo kuvura Ca, ibyuma bishongeshejwe bihuha hamwe na argon hepfo yumutwe muminota irenga 18. Imbaraga zo guhuha kwa argon zirashobora gutuma ibyuma bishongeshejwe bitagaragara, kugirango ibyerekezo bya serefegitire mucyuma gishongeshejwe bigire igihe gihagije cyo kureremba, bitezimbere ubuziranenge bwibyuma, kandi bigabanye ingaruka ziterwa na serefike kubushyuhe bukabije bwubushyuhe. Ingano yo kugaburira insinga ya CA isukuye ntiri munsi ya 0,20kg / t ibyuma, ibiyishyizwemo ntibishobora gutandukanywa rwose, kandi ingano yo kugaburira insinga ya Ca irenga 0.25kg / t ibyuma, muri rusange byongera igiciro. Byongeye kandi, iyo ingano yo kugaburira umurongo wa Ca ari nini, ibyuma bishongeshejwe bitetse cyane, kandi ihindagurika ryurwego rwicyuma gishongeshejwe bituma ibyuma bishongeshejwe byonsa hanyuma okiside ya kabiri ikabaho.
(3)VD ivura vacuum: ohereza lf itunganijwe neza yashongeshejwe kuri sitasiyo ya VD kugirango ivurwe na vacuum, komeza icyuho kiri munsi ya 65pa muminota irenga 20 kugeza igihe igiceri gihagaritse kubira ifuro, fungura igifuniko cya vacuum, hanyuma utere argon hepfo yigitereko kugirango uhindurwe neza. icyuma gishongeshejwe.
Igihe cyo kohereza: Nzeri-02-2022
