Uyini Umehluko Phakathi kuka-17-4PH kanye Nezinye Izinsimbi Zemvula-Ezinzima (PH)?

Uyini Umehluko Phakathi kuka-17-4PH kanye Nezinye Izinsimbi Zemvula-Ezinzima (PH)?

Isingeniso

Izinsimbi ezingenasici ezenza kube nzima ukumvula (izinsimbi ze-PH) ziyikilasi lama-alloys amelana nokugqwala ahlanganisa amandla ezinsimbi ze-martensitic kanye ne-austenitic ezinokumelana nokugqwala okuhle kakhulu. Phakathi kwazo,17-4PH insimbi engagqwalingokungangabazeki isetshenziswa kabanzi ngenxa yezakhiwo zayo ezihlukile zemishini kanye nokwenza lula kwayo. Kodwa iqhathaniswa kanjani namanye amabanga e-PH afana no-15-5PH, 13-8Mo, 17-7PH, kanye ne-Custom 465? Le ndatshana ingena ijule ekwehlukeni kokwakheka, ukwelashwa kokushisa, izici zokushintshwa, ukumelana nokugqwala, kanye nokusetshenziswa.

Uhlolojikelele Lwezinsimbi Ezingagqwali-Nezinza Ziqine

Izinsimbi eziqinisa imvula zithola amandla azo ekwakhekeni kwezimvula ezinhle ku-matrix yensimbi phakathi nokwelashwa kokushisa okuguga. Lezi zinsimbi zihlukaniswe izigaba ezintathu eziyinhloko:

1. Izinsimbi ze-Martensitic PH(isb,17-4PH, 15-5PH)
2. Izinsimbi ze-semi-austenitic PH(isb, 17-7PH)
3. Izinsimbi ze-Austenitic PH(isb., A286)

Isigaba ngasinye sinikeza inhlanganisela eyingqayizivele yezakhiwo ezifanelana nezidingo ezithile zezimboni.

17-4PH (UNS S17400): Izinga Lemboni

Ukwakheka:

• I-Cr: 15.0–17.5%
• Inani: 3.0–5.0%
• Cu: 3.0–5.0%
• I-Nb (Cb): 0.15–0.45%

Ukwelashwa Kokushisa: Kulashwe isixazululo futhi badala (imvamisa i-H900 kuya ku-H1150-M)

I-Mechanical Properties (H900):

• Amandla we-Tensile: 1310 MPa
• Amandla Okukhiqiza: 1170 MPa
• Ubude: 10%
• Ukuqina: ~ 44 HRC

Izinzuzo:

• Amandla aphezulu
• Ukumelana nokugqwala okumaphakathi
• Ukuhleleka okuhle
• Okushiselayo

Izinhlelo zokusebenza:

• Izingxenye ze-Aerospace
• Ama-reactors enuzi
• Ama-valve, ama-shafts, ama-fasteners

Ukuqhathaniswa Nezinye Izinsimbi Ezingenasici ze-PH

15-5PH (UNS S15500)

Ukwakheka:

• Ifana ne-17-4PH, kodwa ngezilawuli eziqinile ekungcoleni
• I-Cr: 14.0–15.5%
• Inani: 3.5–5.5%
• Cu: 2.5–4.5%

Umehluko Obalulekile:

• Ukuqina okuguquguqukayo okungcono ngenxa yesakhiwo esincane esicolekile
• Izakhiwo ezithuthukisiwe zemishini ezigabeni ezijiyile

Sebenzisa Amacala:

• Aerospace forgings
• Imishini yokucubungula amakhemikhali

13-8Mo (UNS S13800)

Ukwakheka:

• I-Cr: 12.25–13.25%
• Inani: 7.5–8.5%
• Mo: 2.0–2.5%

Umehluko Obalulekile:

• Ukuqina okuphezulu nokumelana nokugqwala
• Amandla aphezulu ezimpambanweni eziminyene
• Izilawuli zokuqamba eziqinile zokusetshenziswa kwe-aerospace

Sebenzisa Amacala:

• Izakhi ze-aerospace yesakhiwo
• Iziphethu ezisebenza kahle kakhulu

17-7PH (UNS S17700)

Ukwakheka:

• Cr: 16.0–18.0%
• Inani: 6.5–7.75%
• I-Al: 0.75–1.50%

Umehluko Obalulekile:

• I-semi-austenitic; kudinga umsebenzi obandayo kanye nokwelashwa kokushisa
• Ukwakheka okungcono kodwa ukumelana nokugqwala okuphansi kuno-17-4PH

Sebenzisa Amacala:

• I-Aerospace diaphragms
• Izifutho
• Iziphethu

I-Custom 465 (UNS S46500)

Ukwakheka:

• Cr: 11.0–13.0%
• Inani: 10.75–11.25%
• Isilinganiso: 1.5–2.0%
• Mo: 0.75–1.25%

Umehluko Obalulekile:

• Amandla aphezulu kakhulu (afinyelela ku-200 ksi tensile)
• Ukuqina okuhle kwe-fracture
• Izindleko eziphakeme

Sebenzisa Amacala:

• Amathuluzi okuhlinza
• Izibophelelo zezindiza
• Izingxenye zegiya lokuhlala

Ukuqhathanisa Ukwelashwa Kokushisa

Ukuqhathaniswa Kokumelana Nokugqwala

• Okuhle kakhulu:13-8Mo kanye Nokwezifiso 465
• Kuhle:17-4PH futhi 15-5PH
• Okuhle:17-7PH

Qaphela: Akukho okufana nokumelana nokugqwala kwamamaki e-austenitic ngokugcwele njengo-316L.

I-Machinability kanye ne-Weldability

Ukucabangela Izindleko

• Ibiza Kakhulu:17-4PH
• Amabanga e-Premium:13-8Mo kanye Nokwezifiso 465
• Kulinganisiwe:15-5PH

Izicelo Ukuqhathanisa

Isifinyezo

Isiphetho

Nakuba i-17-4PH iseyinsimbi engagqwali eya ku-PH yezinhlelo zokusebenza eziningi zenhloso evamile, elinye ibanga le-PH linezinzuzo ezihlukile ezilenza lifanelekele kangcono izidingo ezithile. Ukuqonda ama-nuances phakathi kwalezi zingxubevange kwenza onjiniyela bezinto ezibonakalayo nabathengi benze izinqumo ezinolwazi ngokusekelwe emandleni, ukuqina, ukumelana nokugqwala, kanye nezindleko.