Sezvo nzvimbo dzemaindasitiri dzichiwedzera kuva dzakasimba uye tarisiro yekushanda ichiramba ichikwira, mainjiniya ezvinhu uye vatariri vemapurojekiti vanowedzera kutsvaga mhinduro dzetambo dzinogona kupa kugadzikana kwenguva refu uye kudzivirira ngura zvakanyanya. Pakati pemhando dzesimbi dzisina ngura dziripo, tambo yesimbi isina ngura ye904L yave imwe yesarudzo dzakavimbika uye dzepamusoro. Nekuumbwa kwayo kwakasiyana uye hunhu hwesimbi hunoshamisa, tambo yesimbi isina ngura ye904L inopa mwero wekudzivirira ngura unopfuura mhando dzemazuva ano dzakadai se304, 316L, uye kunyange akawanda ma duplex alloys.
Vatengesi vepasi rose vakaita sakysteel vari kuramba vachiwedzera kushandiswa kwetambo dzesimbi dzisina ngura dze904L munzvimbo dzakakosha uko kugara kwenguva refu kwemidziyo, kuchengetedzeka, uye kushanda zvakanaka kuri kukosha. Chinyorwa chino chinotsanangura zvakadzama kuti sei tambo dzesimbi dzisina ngura dze904L dzichidzivirira ngura zvakanyanya uye kuti mashandiro adzo anobatsira sei maindasitiri anoshanda munzvimbo dzakaoma uye dzine makemikari.
Kuumbwa kweAlloy Yakawanda Kwakagadzirirwa Nzvimbo Dzakanyanya
Chimwe chezvikonzero zvikuru zvinoita kuti tambo yesimbi isina ngura ye904L irambe yakasimba mukuumbwa kwayo kwakanyatsorongeka. 904L isimbi isina ngura ine nickel, chromium, molybdenum, uye mhangura. Zvinhu izvi zvinoshanda pamwe chete kugadzira simbi inodzivirira ngura yakawanda.
Chromium inoumba jira rinodzivirira pamusoro petambo, ichidzivirira oxidation. Nickel inowedzera kugadzikana kwechimiro uye inowedzera kuramba kutsemuka uye kuomesa ngura. Molybdenum inovandudza kuramba kutsvuka kwegomba uye kuputika, kunyanya munzvimbo dzine chloride yakawanda, nepo mhangura ichisimbisa kuramba kutsvuka kwesulfuric nephosphoric acids.
Musanganiswa uyu unogadzira tambo yesimbi isingatsvi iyo yakasimba nemakemikari, yakasimba zvikuru, uye inokwanisa kushanda munzvimbo dzinokurumidza kukuvadza zvinhu zvemhando yepamusoro.
Kuramba Kunoshamisa Kunokonzerwa neChloride Kunokonzerwa neKuora
Imwe yenzvimbo dzakaoma zvikuru dzetambo dzesimbi dzisina ngura kusangana nemachloride. Machloride, kunyanya mumvura yegungwa nemhepo iri mumahombekombe, anorwisa zvakasimba simbi dzisina ngura dzechinyakare. Magiredhi akadai se304 ne316L anowanzo tambura nekuora kwegomba, ngura yakatsemuka, uye kuora nekukurumidza.
Zvisinei, tambo yesimbi isingatsvi ye904L inoratidza kuramba kusingakuvadzi ngura inokonzerwa nechloride. Kuwanda kwayo mu nickel ne molybdenum kunoderedza zvakanyanya kukuvadzwa nengura munzvimbo dzayo, zvichiita kuti igare kwenguva refu kunyangwe yakanyudzwa mumvura yegungwa kana kuti yakaiswa pedyo negungwa.
Izvi zvinoita kuti tambo yesimbi isingatsvi ye904L ive sarudzo inofarirwa yeinjiniya yemugungwa, michina yegungwa, mapuratifomu ekunze, uye kuiswa kwezvivakwa zvemahombekombe. Mapurojekiti mazhinji makuru emugungwa anopihwa nesakysteel akashandisa tambo ye904L kunyanya nekuda kwekusadzivirira chloride kwenguva refu uye kusada kugadziriswa zvakanyanya.
Kushanda Kwakanaka Kunopesana Nekuora Kweasidhi
Chimwe chinhu chikuru chine tambo yesimbi isingatsvi ye904L kugona kwayo kutsungirira mamiriro ekunze ane acid yakawanda. Nekuda kwekugadzirwa kwayo kwe alloy ine mhangura, 904L inobudirira mukudzivirira sulfuric acid, phosphoric acid, uye akasiyana-siyana e organic ne inorganic acids.
Kugadzikana kwengura uku kunoita kuti tambo iyi ive yakanaka kumafekitori ekugadzira makemikari, kugadzira fetereza, nzvimbo dzemishonga, uye maindasitiri uko kunowanikwa acid hutsi kana mvura yakawanda. Tambo iyi inochengetedza chimiro chayo kunyangwe ikasangana neacid solutions nguva dzose, ichidzivirira kutadza kusingatarisirwi uye nguva inodhura yekushanda.
Zvichienzaniswa netambo dzesimbi dzisingatsvi, 904L inopa kuvimbika kwakanyanya munzvimbo dzine makemikari akawandisa, zvichideredza kudiwa kwekuongororwa kana kutsiva nguva nenguva.
Kuramba Kwakanyanya Kupidiguka uye Kuora Kwemupata
Kuora kwegomba nekuparara kwematombo ndiwo maviri emhando dzengura dzakanyanya kuomera uye dzinowanzo fungidzirwa, kunyanya mutambo dzakaiswa munzvimbo dzakanyorova, dzisina okisijeni, kana kuti dzine chloride yakawanda. Mhando idzi dzengura dzinogona kukonzera kukuvara kamwe kamwe pasina yambiro inooneka.
Waya yesimbi isingatsvi ye904L inopa dziviriro yepamusoro kubva kunjodzi idzi nekuda kwePREN yayo yakakwira (Pitting Resistance Equivalent Number). Musanganiswa wayo wakapfuma mumolybdenum unowedzera kusimba kwengura munzvimbo dziri pedyo, zvichiita kuti ishande zvakanaka kunyangwe mumvura yegungwa isina kugadzikana, nzvimbo dzakasvibiswa dzegungwa, uye nzvimbo dzemakemikari dzemaindasitiri.
Kuramba uku kwakakosha kune zvishandiso zvakaita se:
Masisitimu ekusimudza zvinhu zvemugungwa
Kuvakwa kwechiteshi chengarava nechiteshi chengarava
Midziyo yemuchina wekubvisa munyu
Masisitimu emvura inotonhorera
Kuisa tambo dzepasi pevhu
Matangi emakemikari nemapaipi
Kune mapurojekiti anoda kushanda zvakanaka nguva dzose, tambo yesimbi isingatsvi ye904L inopa kuvimbika kusingaenzaniswi nemagiredhi akajairwa.
Kugadzikana kweThermal uye Kuramba Kuora Nekumanikidzwa
Pamusoro pekudzivirira ngura yemakemikari, tambo yesimbi isingatsvedzeri ye904L inopa kugadzikana kwakanyanya kana ichisangana nekuchinja-chinja kwekushisa uye kumanikidzwa kwemuchina. Kupwanyika kwengura yestress idambudziko guru rinokanganisa simbi zhinji dzisingatsvedzeri, kunyanya munzvimbo dzine chloride pamwe nekumanikidzwa kwesimba.
904L inodzivirira kukuvara kwesimbi zviri nani kupfuura 304, 316L, uye akawanda magiredhi maviri. Hunhu hwayo hwakawanda hwe nickel hunosimbisa chimiro che austenitic, zvichideredza mukana wekuti microcrack iite brittle kana breakdown kana paine thermal kana mechanical load.
Izvi zvinoita kuti tambo yacho ikwane kumaindasitiri ane tembiricha dzakasiyana-siyana, kushushikana kwakanyanya kwekushanda, kana kufamba-famba kwakadai se:
Oiri negesi
Kugadzira magetsi
Midziyo yekuchera nekuchera
Masisitimu ekugadzirisa kumanikidzwa kwakanyanya
Hupenyu Hurefu hwebasa uye Mari Dzishoma dzekugadzirisa
Kushanda kwenguva refu kwetambo yesimbi isingatsvi ye904L kunobatsira zvakananga mukuderedza kugadziriswa kwayo, kushoma kwedzinotsiviwa, uye kudzikira kwemari yekushandisa. Nekuti tambo inogona kuramba ngura munzvimbo dzinokurumidza kuora zvimwe zvinhu, hupenyu hwayo hwese hunowedzerwa zvakanyanya.
Kunyangwe 904L ichigona kudhura zvakanyanya pakutanga kana tichienzanisa netambo dzesimbi dzisingatsvi, mutengo wayo wese wekuva muridzi wakaderera zvikuru. Maindasitiri anobatsirwa nekuvharwa kushoma, kuongororwa kushoma, uye njodzi shoma dzekukundikana.
Nekugara kwenguva refu uye kushanda kwakasimba, mainjiniya vanogona kusarudza nechivimbo tambo yesimbi isina ngura ye904L yemapurojekiti anoda kuvimbika kwakanyanya.
Mashandisirwo Anoshandiswa Pamhando Dzese Munzvimbo Dzakanyanya Kuora
Waya yesimbi isina ngura ye904L inoshandiswa zvakanyanya mumaindasitiri uko ngura ndiyo inonyanya kukosha:
Mainjiniya emugungwa nekunze kwenyika
Nzvimbo dzekuchengetera nekugadzira makemikari
Nzvimbo dzekuchenesa mvura yakasviba
Kugadzirwa kwechikafu nemishonga
Kuvaka kwepamusoro-soro uye magadzirirwo ezvivakwa
Masisitimu ekubvisa munyu uye ekuchenesa mvura
Simba regungwa nezvivakwa zvechiteshi chengarava
Kugona kwayo kushanda zvakanaka munzvimbo dzakaoma idzi kwakaita kuti 904L ive imwe yemhinduro dzetambo dzesimbi dzisina ngura dzinovimbwa zvikuru pasi rose.
Mhedziso
Waya yesimbi isina ngura ye904L inoonekwa sechinhu chepamusoro-soro chinodzivirira ngura chinopfuura kugona kwesimbi isina ngura yechinyakare. Muumbirwo wayo wepamusoro we alloy, kuramba kwakasimba kwechloride nema acid, uye kushanda kwayo kwepamusoro-soro pakukanganiswa ne stress corrosion zvinoita kuti ive mhinduro inofarirwa munzvimbo dzakaoma dzemaindasitiri.
Nekuwedzera kuri kuita kudiwa kwenyika dzese, vatengesi vakaita sesakysteel vanoramba vachipa tambo dzesimbi dzisina ngura dze904L dzemhando yepamusoro dzinotsigira zvinodiwa zvemazuva ano zveinjiniya uye dzinovimbisa kugadzikana kwekushanda kwenguva refu. Kubva kuinjiniya wemugungwa kusvika pakugadzirisa makemikari uye mashandisirwo ekuvaka, tambo dzesimbi dzisina ngura dze904L dzinopa kudzivirira ngura kusingaenzaniswi uye kushanda kwakavimbika mumamiriro ezvinhu akaomarara.
Nguva yekutumira: Mbudzi-18-2025