Uyini Umehluko Phakathi Kwezinsimbi Ezingu-17-4PH Nezinye Izinsimbi Eziqinisa Ukuna kweNkukhu (PH)?

Uyini Umehluko Phakathi Kwezinsimbi Ezingu-17-4PH Nezinye Izinsimbi Eziqinisa Ukuna kweNkukhu (PH)?

Isingeniso

Izinsimbi ezingagqwali eziqinisa imvula (izinsimbi ze-PH) ziyisigaba sama-alloy amelana nokugqwala ahlanganisa amandla ezinsimbi ze-martensitic neze-austenitic nokumelana nokugqwala okuhle kakhulu. Phakathi kwazo,Insimbi engagqwali engu-17-4PHKungashiwo ukuthi yiyona esetshenziswa kakhulu ngenxa yezakhiwo zayo ezihlukile zemishini kanye nokulula kokuyikhiqiza. Kodwa iqhathaniswa kanjani nezinye izinhlobo ze-PH ezifana ne-15-5PH, 13-8Mo, 17-7PH, kanye ne-Custom 465? Lesi sihloko sigxila kakhulu emehluko wokwakheka, ukwelashwa kokushisa, izakhiwo zemishini, ukumelana nokugqwala, kanye nezinhlelo zokusebenza.

Ukubuka Konke Kwezinsimbi Ezingagqwali Eziqinisa Imvula

Izinsimbi eziqinisa imvula zithola amandla azo ngokwakhiwa kwama-precipitate amancane ku-matrix yensimbi ngesikhathi sokwelashwa kokushisa okuguga. Lezi zinsimbi zihlukaniswe ngezigaba ezintathu eziyinhloko:

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

Isigaba ngasinye sinikeza inhlanganisela eyingqayizivele yezakhiwo ezenzelwe izidingo ezithile zezimboni.

17-4PH (UNS S17400): Izinga Lemboni

Ukwakheka:

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

Ukwelashwa Kokushisa: Ilashwe ngesisombululo futhi igugile (ngokuvamile i-H900 kuya ku-H1150-M)

Izakhiwo Zemishini (H900):

• Amandla Okudonsa: 1310 MPa
• Amandla Okukhiqiza: 1170 MPa
• Ukwandiswa: 10%
• Ubulukhuni: ~44 HRC

Izinzuzo:

• Amandla aphezulu
• Ukumelana nokugqwala okumaphakathi
• Ukusebenza kahle kwemishini
• Okuthungelwayo

Izicelo:

• Izingxenye zezindiza
• Ama-reactor enuzi
• Amavalvu, imiphini, izikhonkwane

Ukuqhathaniswa nezinye izinsimbi ze-PH ezingagqwali

15-5PH (UNS S15500)

Ukwakheka:

• Kufana ne-17-4PH, kodwa ngokulawula okuqinile kokungcola
• I-Cr: 14.0–15.5%
• I-Ni: 3.5–5.5%
• I-Cu: 2.5–4.5%

Umehluko Oyinhloko:

• Ukuqina okungcono okuphambeneyo ngenxa yesakhiwo esincane kakhulu
• Izakhiwo ezithuthukisiwe zemishini ezingxenyeni ezijiyile

Amakesi Okusetshenziswa:

• Izinto zokubopha izindiza
• Imishini yokucubungula amakhemikhali

13-8Mo (UNS S13800)

Ukwakheka:

• I-Cr: 12.25–13.25%
• I-Ni: 7.5–8.5%
• Inyanga: 2.0–2.5%

Umehluko Oyinhloko:

• Ukuqina okuphezulu nokumelana nokugqwala
• Amandla aphezulu ezindaweni ezibanzi ezibanzi
• Izilawuli zokwakheka eziqinile zokusetshenziswa kwezindiza

Amakesi Okusetshenziswa:

• Izingxenye zezindiza zesakhiwo
• Iziphethu ezisebenza kahle kakhulu

17-7PH (UNS S17700)

Ukwakheka:

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

Umehluko Oyinhloko:

• Semi-austenitic; kudinga umsebenzi obandayo kanye nokwelashwa kokushisa
• Ukwakheka okungcono kodwa ukumelana nokugqwala okuphansi kune-17-4PH

Amakesi Okusetshenziswa:

• Ama-diaphragm asemoyeni
• I-Bellows
• I-Springs

I-465 eyenziwe ngokwezifiso (UNS S46500)

Ukwakheka:

• I-Cr: 11.0–13.0%
• I-Ni: 10.75–11.25%
• Isilinganiso: 1.5–2.0%
• Inyanga: 0.75–1.25%

Umehluko Oyinhloko:

• Amandla aphezulu kakhulu (kufika ku-200 ksi tensile)
• Ukuqina okuhle kakhulu kokuphuka
• Izindleko eziphezulu

Amakesi Okusetshenziswa:

• Amathuluzi okuhlinza
• Izibambo zezindiza
• Izingxenye zegiya lokufika

Ukuqhathaniswa Kokwelashwa Kokushisa

Ukuqhathaniswa Kokumelana Nokugqwala

• Okuhle kakhulu:13-8Mo kanye ne-Custom 465
• Kuhle:17-4PH kanye no-15-5PH
• Ubuhle:17-7PH

Qaphela: Akukho okulingana nokumelana nokugqwala kwama-austenitic grades aphelele njenge-316L.

Ukukwazi ukusebenza kanye nokushibilika

Ukucatshangelwa Kwezindleko

• Okungabizi kakhulu:17-4PH
• Amabanga E-Premium:13-8Mo kanye ne-Custom 465
• Okulinganiselayo:15-5PH

Ukuqhathaniswa Kwezinhlelo Zokusebenza

Isifinyezo

Isiphetho

Nakuba i-17-4PH isalokhu iyinsimbi engagqwali ye-PH esetshenziswa kakhulu ezinhlelweni eziningi ezijwayelekile, ibanga ngalinye le-PH elihlukile linezinzuzo ezihlukile ezenza lifaneleke kangcono ezidingweni ezithile. Ukuqonda umehluko phakathi kwalezi zingxube kwenza onjiniyela bezinto zokwakha kanye nabathengi bakwazi ukwenza izinqumo ezinolwazi ngokusekelwe emandleni, ukuqina, ukumelana nokugqwala, kanye nezindleko.