Mawu Oyamba
TheASTM A312 UNS S30815 253MA Chitoliro Chachitsulo chosapanga dzimbirindi aloyi wachitsulo chosapanga dzimbiri cha austenitic chomwe chimadziwika chifukwa chokana kwambiri kutentha kwa okosijeni, dzimbiri, komanso makina abwino kwambiri pamatenthedwe okwera.Mtengo wa 253MAidapangidwa makamaka kuti igwiritsidwe ntchito pamapulogalamu omwe amafunikira kukhazikika kwa kutentha kwambiri, makamaka m'mafakitale opangira ng'anjo ndi kutentha. Kukana kwake kwakukulu pakukulitsa, carburization, ndi makutidwe ndi okosijeni wamba kumapangitsa kukhala chinthu chodalirika kumadera owopsa.
Gulu lazitsulo zosapanga dzimbiri limagwiritsidwa ntchito kwambiri m'mafakitale otentha kwambiri ndipo ndi abwino kwa mapulogalamu omwe mphamvu zonse ndi kukana kwa okosijeni ndizofunikira kwambiri.
Miyezo ndi Mafotokozedwe
TheASTM A312 UNS S30815 253MA Chitoliro Chachitsulo chosapanga dzimbiriamapangidwa motsatira mfundo izi:
- Chithunzi cha ASTM A312: Mafotokozedwe Okhazikika a Mapaipi Opanda Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
- UNS S30815: The Unified Numbering System for Materials imazindikiritsa izi ngati kalasi yazitsulo zosapanga dzimbiri zosapanga dzimbiri.
- EN 10088-2: European Standard for Stainless Steel, yophimba zofunikira pakupangidwa kwazinthuzi, makina amakina, ndi kuyesa.
Chemical Composition(% ndi Kulemera kwake)
The mankhwala zikuchokera253MA (UNS S30815)idapangidwa kuti ipereke kukana kwabwino kwa okosijeni komanso mphamvu ya kutentha kwambiri. Kapangidwe kake ndi motere:
| Chinthu | Kupanga (%) |
| Chromium (Cr) | 20.00 - 23.00% |
| Nickel (Ndi) | 24.00 - 26.00% |
| Silicon (Si) | 1.50 - 2.50% |
| Manganese (Mn) | 1.00 - 2.00% |
| Mpweya (C) | ≤ 0.08% |
| Phosphorous (P) | ≤ 0.045% |
| Sulfure (S) | ≤ 0.030% |
| Nayitrogeni (N) | 0.10 - 0.30% |
| Chitsulo (Fe) | Kusamala |
Zakuthupi: Makhalidwe Ofunikira
Mtengo wa 253MA(UNS S30815) imaphatikiza mphamvu zotentha kwambiri komanso kukana kwa okosijeni. Izi zimapangitsa kuti ikhale yabwino kwa ntchito m'malo ovuta kwambiri, monga ng'anjo ndi zosinthira kutentha. Zomwe zili ndi chromium ndi faifi wochuluka, zomwe zimapereka kukana kwa okosijeni pa kutentha mpaka 1150 ° C (2100 ° F).
Zakuthupi
- Kuchulukanakukula: 7.8g/cm³
- Melting PointKutentha: 1390°C (2540°F)
- Thermal Conductivity: 15.5 W/m·K pa 100°C
- Kutentha Kwapadera: 0.50 J/g·K pa 100°C
- Kukaniza Magetsi: 0.73 μΩ·m pa 20°C
- Kulimba kwamakokedwe: 570 MPa (zochepa)
- Zokolola Mphamvu: 240 MPa (ochepera)
- Elongation: 40% (osachepera)
- Kulimba (Rockwell B): HRB 90 (pazipita)
- Modulus of ElasticityKuchuluka: 200 GPA
- Chiwerengero cha Poisson: 0.30
- Kukaniza kwambiri kutentha kwa okosijeni, makulitsidwe, ndi carburization.
- Imasunga mphamvu ndi kukhazikika kwa mawonekedwe pa kutentha kopitilira 1000°C (1832°F).
- Kukana kwapamwamba kwa malo acidic ndi alkaline.
- Kulimbana ndi sulfure ndi chloride-induced stress corrosion cracking.
- Imatha kupirira malo aukali, ndikupangitsa kuti ikhale yoyenera kugwiritsidwa ntchito pokonza mankhwala komanso njira zama mafakitale otentha kwambiri.
Mechanical Properties
Kukana kwa Oxidation
Kukaniza kwa Corrosion
Njira Yopangira: Luso la Kulondola
Kupanga kwa253MA mapaipi achitsulo osapanga dzimbiriamatsatira njira zaposachedwa zopangira kuti zitsimikizire kuti zili bwino komanso zolimba:
- Kupanga Mapaipi Opanda Msoko: Amapangidwa kudzera mu extrusion, kuboola mozungulira, ndi njira zotalikirapo kuti apange mapaipi opanda msoko okhala ndi makulidwe a khoma lofanana.
- Njira Yozizira Yogwira Ntchito: Zojambula zozizira kapena njira zozembera zimagwiritsidwa ntchito kuti zikwaniritse miyeso yolondola komanso malo osalala.
- Kutentha Chithandizo: Mapaipi amapatsidwa chithandizo cha kutentha pa kutentha kwina kuti apititse patsogolo makina awo ndi ntchito yotentha kwambiri.
- Pickling & Passivation: Mipope amazifutsa kuchotsa sikelo ndi oxide mafilimu ndi passivated kuonetsetsa kukana dzimbiri zina.
Kuyesa ndi Kuyang'anira: Chitsimikizo cha Ubwino
Womic Steel imatsata ndondomeko yoyesera yotsimikizika kuti iwonetsetse kuti ili yabwino kwambiri253MA mapaipi achitsulo osapanga dzimbiri:
- Chemical Composition Analysis: Kutsimikiziridwa pogwiritsa ntchito njira za spectroscopic kutsimikizira kuti alloy amakumana ndi nyimbo zomwe zatchulidwa.
- Kuyesa Kwamakina: Kukhazikika, kuuma, ndi kuyesa kwamphamvu kuti muwonetsetse momwe zinthu zikuyendera pamatenthedwe osiyanasiyana.
- Kuyeza kwa Hydrostatic: Mipope imayesedwa kuti ikhale yolimba kuti iwonetsetse kuti ikuyenda bwino.
- Kuyesa Kopanda Kuwononga (NDT): Zimaphatikizapo kuyesa kwa ultrasonic, eddy current, ndi dye penetrant kuyesa kuti muwone vuto lililonse lamkati kapena pamwamba.
- Kuyang'ana Zowoneka ndi Zowoneka: Chitoliro chilichonse chimawunikiridwa kuti chimalizike, ndipo kulondola kwake kumawunikiridwa motsutsana ndi zomwe zidanenedwa.
Kuti mumve zambiri kapena mawu anu, lemberani Womic Steel lero!
Imelo: sales@womicsteel.com
MP/WhatsApp/WeChat:Victor: + 86-15575100681 Jack: +86-18390957568
Nthawi yotumiza: Jan-08-2025