Stainless Steel Uhlolojikelele
Insimbi engagqwali: Uhlobo lwensimbi eyaziwa ngokumelana nokugqwala kanye nezakhiwo ezingagqwali, eziqukethe okungenani i-chromium engu-10.5% kanye nenani eliphakeme le-carbon engu-1.2%.
Insimbi engagqwali iyinto esetshenziswa kabanzi kuzo zonke izimboni ezahlukahlukene, edume ngokumelana nokugqwala nokuguquguquka. Phakathi kwamabanga amaningi ensimbi engagqwali, 304, 304H, 304L, kanye no-316 yiwona avame kakhulu, njengoba kucaciswe kuzinga le-ASTM A240/A240M le-“Chromium ne-Chromium-Nickel Stainless Steel Plate, Ishidi, kanye ne-Strip for Pressure Vessels and General Izicelo.”
La mabanga amane ayingxenye yensimbi efanayo. Angahlukaniswa njengezinsimbi ezingenasici ze-austenitic ngokusekelwe esakhiweni sazo futhi njengezinsimbi ezingenasici ze-chromium-nickel ezingu-300 ngokusekelwe ekwakhiweni kwazo. Umehluko oyinhloko phakathi kwazo usekuhlanganiseni kwawo amakhemikhali, ukumelana nokugqwala, ukumelana nokushisa, nezinkambu zokufaka isicelo.
I-Austenitic Stainless Steel: Ikakhulukazi yakhiwe ukwakheka kwekristalu eyi-cubic crystal egxile ebusweni (isigaba sika-γ), okungezona uzibuthe, futhi okuqiniswe kakhulu ngokusebenza okubandayo (okungase kubangele uzibuthe). (GB/T 20878)
Ukubunjwa Kwekhemikhali Nokuqhathaniswa Kokusebenza (Kusekelwe Emazingeni e-ASTM)
304 Insimbi Engagqwali:
- Ukwakheka Okuyinhloko: Iqukethe cishe u-17.5-19.5% we-chromium kanye ne-nickel engu-8-10.5%, enenani elincane lekhabhoni (ngaphansi kuka-0.07%).
- Izakhiwo Zemishini: Ibonisa amandla okuhle okuqina (515 MPa) kanye nobude (cishe 40% noma ngaphezulu).
304L Insimbi Engagqwali:
- Ukwakheka Okuyinhloko: Ifana ne-304 kodwa enokuqukethwe kwekhabhoni encishisiwe (ngaphansi kuka-0.03%).
- Izakhiwo Zemishini: Ngenxa yokuqukethwe kwekhabhoni ephansi, amandla okuqina angaphansi kancane kuno-304 (485 MPa), anobude obufanayo. Okuqukethwe kwekhabhoni ephansi kuthuthukisa ukusebenza kwayo kokushisela.
304H Insimbi Engagqwali:
- Ukwakheka Okuyinhloko: Okuqukethwe kwekhabhoni ngokuvamile kusuka ku-0.04% kuya ku-0.1%, ne-manganese encishisiwe (yehle iye ku-0.8%) kanye ne-silicon ekhuphukile (kufika ku-1.0-2.0%). Okuqukethwe kwe-Chromium ne-nickel kufana ne-304.
- Izakhiwo Zemishini: Amandla e-Tensile (515 MPa) kanye nobude kuyafana no-304. Inamandla amahle kanye nokuqina emazingeni okushisa aphezulu, okwenza ifaneleke ezindaweni ezisezingeni eliphezulu.
316 Insimbi Engagqwali:
- Ukwakheka Okuyinhloko: Iqukethe 16-18% chromium, 10-14% nickel, kanye 2-3% molybdenum, okuqukethwe carbon ngaphansi 0.08%.
- Izakhiwo Zemishini: Amandla e-Tensile (515 MPa) nobude (ngaphezulu kuka-40%). Inokumelana nokugqwala okuphakeme.
Kusukela kulesi siqhathaniso esingenhla, kuyabonakala ukuthi amabanga amane anezakhiwo zemishini ezifanayo kakhulu. Umehluko ulele ekubunjweni kwawo, okuholela ekuhlukeni kokumelana nokugqwala nokumelana nokushisa.
I-Stainless Steel Corrosion Resistance kanye Nokuqhathaniswa Kokumelana Nokushisa
Ukumelana Nokugqwala:
- 316 Insimbi Engagqwali: Ngenxa yobukhona be-molybdenum, inokumelana nokugqwala okungcono kunochungechunge lwe-304, ikakhulukazi ngokumelene nokugqwala kwe-chloride.
- 304L Insimbi Engagqwali: Ngokuqukethwe kwayo kwekhabhoni ephansi, futhi inokumelana nokugqwala okuhle, kulungele izindawo ezibolayo. Ukumelana nokugqwala kwayo kungaphansi kuka-316 kodwa kubiza kakhulu.
Ukumelana Nokushisa:
- 316 Insimbi Engagqwali: Ukwakheka kwayo okuphezulu kwe-chromium-nickel-molybdenum kunikeza ukumelana nokushisa okungcono kunensimbi engagqwali engu-304, ikakhulukazi nge-molybdenum ethuthukisa ukumelana kwayo ne-oxidation.
- 304H Insimbi Engagqwali: Ngenxa yekhabhoni ephezulu, i-manganese ephansi, nokwakheka kwe-silicon ephezulu, iphinde ibonise ukumelana nokushisa okuhle emazingeni okushisa aphezulu.
Izinkambu Zokusebenza Zensimbi Engagqwali
304 Insimbi Engagqwali: Ibanga eliyisisekelo elingabizi futhi eliguquguqukayo, elisetshenziswa kakhulu ekwakheni, ekukhiqizeni nasekulungiseni ukudla.
304L Insimbi Engagqwali: Inguqulo yekhabhoni ephansi engu-304, ifanele ubunjiniyela bamakhemikhali nolwandle, enezindlela ezifanayo zokucubungula ukuya ku-304 kodwa ifaneleka kangcono indawo edinga ukumelana nokugqwala okuphezulu kanye nokuzwela izindleko.
304H Insimbi Engagqwali: Isetshenziswa kuma-superheaters nama-reheaters ama-boilers amakhulu, amapayipi esitimu, izishintshi zokushisa embonini ye-petrochemical, nezinye izinhlelo zokusebenza ezidinga ukumelana nokugqwala okuhle nokusebenza kwezinga lokushisa eliphezulu.
316 Insimbi Engagqwali: Okuvame ukusetshenziswa ezigayweni ze-pulp nephepha, imboni esindayo, ukucubungula amakhemikhali kanye nemishini yokugcina, imishini yokuhlanza, imishini yezokwelapha nemithi, uwoyela negesi yasogwini, izindawo zasolwandle, kanye ne-cookware ephezulu.
Isikhathi sokuthumela: Sep-24-2024