DMaindasitiri emafuta emuno, makemikari nedzimwe nzvimbo dzesimba anoda simbi dzakawanda dzinopisa zvishoma kuti agadzire nekugadzira michina yakasiyana-siyana yekugadzira nekuchengetedza zvinhu zvakaita segasi remafuta rakanyungudutswa, ammonia yemvura, okisijeni yemvura uye nitrogen yemvura.
Zvichienderana nehurongwa hwemakore mashanu hweChina hwegumi nemaviri, kuvandudzwa kwesimba remafuta negesi kuchagadziriswa uye kuvandudzwa kwezviwanikwa zvemafuta negasi kuchakurumidzirwa mumakore mashanu anotevera. Izvi zvichapa mukana wakakura wemusika nekusimudzira indasitiri yekugadzira nekugadzira michina yekuchengetedza simba pasi pemamiriro ekupisa kwakaderera, uye zvichakurudzirawo kuvandudzwa kweQ355D chubhu re rectangular rinodzivirira tembiricha yakadererazvinhu. Sezvo mapaipi anodziya tembiricha yakaderera achida kuti zvigadzirwa zvive nesimba guru chete asiwo nekusimba kwekupisa kwakanyanya uye kwakaderera, mapaipi anodziya tembiricha yakaderera anoda kuchena kwakanyanya kwesimbi, uye ne ring ratio yekupisa, kuchena kwesimbi kwakakwirawo. Q355Etembiricha yakaderera zvikuruyakagadzirwa uye yakagadzirwa. Simbi yebhillet inogona kushandiswa zvakananga sepombi yesimbi isina musono yekutumira chimiro. Maitiro ekugadzira anosanganisira zvinhu zvitatu zvinotevera:
(1)Kunyungudutsa chitofu chemagetsi: simbi yakapwanyika nesimbi yenguruve zvinoshandiswa sezvinhu zvakagadzirwa, pakati payo simbi dzakasara dzinoita 60-40% uye simbi yenguruve inoita 30-40%. Tichishandisa zvakanakira zve alkalinity yakawanda, tembiricha yakaderera uye iron oxide yakakwira ye ultra-high power grade electric arc furnace, kusanganiswa kwakanyanya kweoxygen decarburization ne bundle oxygen gun pamadziro efurnace, uye kunyungudutsa mvura yekutanga yekugadzira simbi ne high impedance uye ultra-high power grade electric arc furnace, zvinhu zvinokuvadza phosphorus, hydrogen, nitrogen uye non-metallic inclusions musimbi yakanyungudutswa zvinogona kubviswa zvinobudirira. End point carbon yesimbi yakanyungudutswa mu electric arc furnace < 0.02%, phosphorus < 0.002%; Deoxidation yakadzika yesimbi yakanyungudutswa inoitwa panguva ye electric furnace tapping, uye A1 ball ne carbasil zvinowedzerwa kuti zviite pre deoxidation.
Zviri muaruminiyamu musimbi yakanyungudutswa zvinodzorwa pa0.09 ~ 1.4%, kuitira kuti Al203 inclusions dzakaumbwa musimbi yakanyungudutswa yekutanga dzive nenguva yakakwana yekuyangarara, nepo zviri muaruminiyamu musimbi yebhiriji yechubhu mushure mekunatswa kweLF, kurapwa kweVD vacuum uye kukanda kunoramba kuchiitwa zvinosvika 0.020 ~ 0.040%, izvo zvinodzivirira kuwedzerwa kweAl203 inoumbwa nekuoxidation kwearuminiyamu mukuita kwekunatswa kweLF. Nickel plate inoumba 25 ~ 30% yealloy yese inowedzerwa mundiro yekunatswa; Kana zviri mucarbon zviri kupfuura 0.02%, zviri mucarbon zviri musimbi yakanyungudutswa zvakanyanya hazvigone kugutsa kudiwa kwe0.05 ~ 0.08%. Zvisinei, kuti kuderedza oxidation yesimbi yakanyungudutswa, zvinodikanwa kudzora simba remhepo inovhuvhuta yepfuti yeoxygen yefurnace wall cluster kuti idzore zviri mucarbon zviri pasi pe0.02%; Kana huwandu hwephosphorus hwakaenzana ne0.002%, huwandu hwephosphorus hwechigadzirwa huchasvika pamusoro pe0.006%, izvo zvichawedzera huwandu hwephosphorus mune chinhu chinokuvadza uye zvinokanganisa kusimba kwesimbi pakupisa kwakaderera nekuda kwekubvisa phosphorus ine slag kubva pakubata kwechoto chemagetsi uye kuwedzerwa kweferroalloy panguva yekuchenesa kweLF. Kupisa kwekubata kwechoto chemagetsi chearc i1650 ~ 1670 ℃, uye eccentric bottom tapping (EBT) inoshandiswa kudzivirira oxide slag kuti isapinde muchoto chekuchenesa cheLF.
(2)Mushure mekunatswa kweLF, waya inodyisa waya yeCA yakachena ye0.20 ~ 0.25kg/t kuti ibvise tsvina uye kuti zvinhu zviri musimbi yakanyungudutswa zvive denderedzwa. Mushure mekugadziriswa kweCa, simbi yakanyungudutswa inofuridzwa neargon pasi pechirongo kweanopfuura maminetsi gumi nemasere. Simba rekupfurwa kweargon rinogona kuita kuti simbi yakanyungudutswa isaonekwe, kuitira kuti zvinhu zviri musimbi yakanyungudutswa zvive nenguva yakakwana yekuyangarara, kunatsiridza kuchena kwesimbi, uye kuderedza kukanganiswa kwezvinhu zviri musimbi yakanyungudutswa pakusimba kwekupisa kwakaderera. Huwandu hwekudyisa hwewaya yeCA yakachena hushoma pane 0.20kg/t simbi, zvinhu zviri musimbi hazvigone kubviswa zvachose, uye huwandu hwekudyisa hwewaya yeCa hunopfuura 0.25kg/t simbi, izvo zvinowanzowedzera mutengo. Pamusoro pezvo, kana huwandu hwekudyisa hwemutsara weCa hwakakura, simbi yakanyungudutswa inofashaira zvakanyanya, uye kuchinja kwehuwandu hwesimbi yakanyungudutswa kunoita kuti simbi yakanyungudutswa inyudzwe uye oxidation yechipiri inoitika.
(3)Kurapa kweVD vacuum: Tumira simbi yakanyungudutswa yakanatswa kuchiteshi cheVD kuti irapwe vacuum, chengeta vacuum iri pasi pe65pa kweanopfuura maminetsi makumi maviri kusvika slag yamira kupupuma, vhura chifukidziro chevacuum, uye putira argon pasi pechirongo kuti simbi yakanyungudutswa ipure isingachinji.
Nguva yekutumira: Gunyana-02-2022
