Stainless Steel Corrosion Resistance: Zvaunoda Kuziva

Simbi isina tsvina inozivikanwa zvakanyanya nekuda kwekugara kwayo, simba, uye, zvakanyanya kukosha, yayocorrosion resistance. Ichi chivakwa chinoita kuti ive chinhu chesarudzo kumaindasitiri asingaverengeki, kubva pakuvaka uye kugadzira chikafu kusvika mumakungwa nekugadzira makemikari. Asi chii chaizvo chinopa simbi isina tsvina kuramba kwayo ngura uye kuparara? Uye ungaite sei kuti simbi yako isina tsvina iite sezvinotarisirwa munzvimbo dzakasiyana?

Muchinyorwa chino, tinotsanangura sainzi kuseri kwesimbi isina corrosion kuramba, mhando dzakasiyana dziripo, uye maitiro ekusarudza giredhi rakakodzera rekushandisa kwako chaiko.

Chii Chinoita Kuti Stainless Steel Corrosion Irambe?

Kiyi yekudzivirirwa nesimbi isina ngura iri mairichromium content. Masimbi ese asina tsvina ane kanenge 10.5% chromium, inopindirana neokisijeni mumhepo kuitapassive layeryechromium oxide pamusoro. Iyi isingaonekwi, inozvigadzirisa inodzivirira simbi iri pasi kubva pakusvibiswa uye kuora.

Iyo yakakwira iyo chromium zvirimo, zviri nani kupikisa kwekuora. Mazhinji simbi isina simbi mamakisi anosanganisirawo zvimwe alloying zvinhu sengenickel, molybdenum,uyenitrogenkuwedzera ichi chipingamupinyi chinodzivirira, kunyanya munzvimbo dzine hutsinye.

Mhando Dzakajairika dzeCorrosion uye Stainless Steel Behavior

Kunyange simbi isina simbi haina kudzivirirwa zvachose kumarudzi ose ekuora. Kunzwisisa marudzi akajairika kunobatsira pakusarudza giredhi rakakodzera.

1. General Corrosion

Uku ndiko kukoromoka kwakafanana kunoitika pamusoro penzvimbo kana kuine acidic kana caustic nharaunda. Magiredhi akaita se304 ne316 anopikisa mhando iyi zvakanaka.

2. Pitting Corrosion

Inowanikwa munzvimbo dzine chloride-rich semvura yegungwa kana nzvimbo dzemadziva. Molybdenum-ine mamakisi akadai316 or 904Lkupa kupikisa kwepamusoro.

3. Crevice Corrosion

Inoitika munzvimbo dzakamanikana umo okisijeni isingasviki pamusoro kuti ichengetedze iyo passive layer. Kusarudza yakaderera-kabhoni kana akakwira-alloy mamakisi anogona kubatsira kudzivirira izvi.

4. Stress Corrosion Cracking

Uku kusanganiswa kwe mechanical stress uye nharaunda inoora. Duplex Stainless steels kana high-nickel alloys inowanzoshandiswa kudzivisa chiitiko ichi.

Kuenzanisa Akakurumbira Stainless Simbi Magiredhi

• 304 Stainless Simbi: Yakanakisa general corrosion resistance, yakanakira mukati memukati kana zvinyoro corrosion nharaunda.

• 316 Stainless Simbi: Iine molybdenum, ichiita kuti ive yakakodzera kune zvemugungwa, zvemishonga, uye zvekugadzira chikafu.

• 430 Stainless Simbi: Isingadhure asi ine yakaderera corrosion resistance, inonyanya kushandiswa mukushandiswa kwemukati.

• 904L Stainless Simbi: A high-alloy austenitic Stainless simbi ine kupesana kwakasiyana kune yakasimba acids uye chlorides.

• Duplex 2205: Inopa simba repamusoro uye kuramba kushushikana nekupwanya ngura.

At sakysteel, tinopa huwandu hwakasiyana-siyana hwesimbi isina tsvina mamakisi ane akavimbiswa kuumbwa kwemakemikari uye akaedzwa kusaita ngura, tichibatsira vatengi pasi rese kuwana anonyatsoenderana nemapurojekiti avo.

Zvinhu Zvinopesvedzera Stainless Steel Corrosion Resistance

Zvakati wandei zvekunze zvinokanganisa mabatiro anoita simbi isina tsvina mubasa:

• Tembiricha: Tembiricha yepamusoro inogona kukurumidza kuita ngura, kunyanya munzvimbo dzine acidic kana chloride-rich.

• Kuratidzira kune Chlorides: Chloride ions ine hukasha uye inogona kuputsa passive layer.

• Acidity uye alkalinity: Yakanyanyisa pH mazinga anogona kukanganisa kunyange yakakwirira-giredhi simbi isina tsvina.

• Surface Finish: Kupera kwakatsetseka (kufanana neNo. 4 kana 2B) kunowanzoramba kuonda zviri nani pane rougher or scratched surfaces.

• Maintenance: Kuchenesa nguva dzose kunodzivirira kusvibiswa kubva pakuputsa firimu rinodzivirira.

Sarudzo yakakodzera, kuisirwa, uye kugadzirisa kunogona kuwedzera zvakanyanya hupenyu hwesimbi isina tsvina munzvimbo dzinoparadza.

Zvishandiso Zvinotsamira paStainless Steel Corrosion Resistance

Simbi isina tsvina yakakosha mumaindasitiri umo ngura yaizotungamira kune njodzi dzekuchengetedza, kuderera, kana kusvibiswa. Mienzaniso yakajairika inosanganisira:

• Marine engineering: Yezvikepe zvekugadzirisa, shafts, uye mapuratifomu ekumahombekombe

• Chemical processing: Zvemareactor, matangi, uye mapaipi

• Chikafu nechinwiwa: Muhutsanana pombi uye kicheni midziyo

• Kuvaka: Kunyanya kune ekunze mafacade uye zvivakwa zvemahombekombe

• Pharmaceutical uye mishonga: Apo hutsanana uye kuramba kumakemikari kwakakosha

sakysteelinopa zvakasimbiswa simbi isina tsvina zvinosangana nezviyero zvepasirese, zvichiita kuti tive shamwari yakavimbika yekuda maapplication anoita corrosion-sensitive application.

Maitiro eKuvandudza Stainless Simbi Corrosion Resistance

Kunyangwe iwo magiredhi asingadzivirike zvakanyanya anogona kubatsirwa kubva kune mamwe matanho ekudzivirira:

• Shandisa giredhi chairokune yako chaiyo nharaunda

• Ita shuwa welding yakakodzerakuti udzivise sensitization uye intergranular corrosion

• Shandisa passivation mishongakuwedzera chidziviriro chekudzivirira mushure mekugadzira kana kugadzira

• Dzivisa kusangana nekabhoni simbipanguva yekubata kana kuchengetedza kudzivirira kusvibiswa

• Kuchenesa nguva dzoseine non-chloride cleaners kuchengetedza passive layer

Kushanda nevane ruzivo vatengesi sesakysteelinova nechokwadi chekuti zvinhu zvako hazvisi zvemhando yepamusoro chete asiwo zvakanyatsogadziriswa uye kuchengetedzwa.

Mhedziso

Kunzwisisa kushorwa kwekupokana kwesimbi isina tsvina ndicho chinhu chakakosha pakusarudza zvinhu zvakafanira purojekiti yako. Kubva pane passive layer yakaumbwa nechromium kusvika kune yakawedzera simba remolybdenum uye nickel, simbi isina tsvina inogadzirwa kuti iite munzvimbo dzakanyanya kunetsa.

Kunyangwe iwe uri kuvaka chikafu-giredhi yekugadzira tambo kana kupfekedza chikuva chekuchera chekunze, kusarudza iyo chaiyo Stainless simbi giredhi inovimbisa kuvimbika kwenguva refu, kuchengetedzeka, uye kushanda nesimba.

Zvemhando yepamusoro-soro zvigadzirwa zveStainless simbi zvinotsigirwa nehunyanzvi hwehunyanzvi uye sevhisi yepasi rose, kuvimbasakysteel-mupi wako anodzivirira corrosion solution.