Ndeupi Musiyano Uripo Pakati pe17-4PH uye Zvimwe Kunaya-Kuomesa (PH) Masimbi?

Ndeupi Musiyano Uripo Pakati pe17-4PH uye Zvimwe Kunaya-Kuomesa (PH) Masimbi?

Nhanganyaya

Kunaya-kuomesa simbi dzisina tsvina (PH simbi) ikirasi yearoyi asingaore anosanganisa kusimba kwemartensitic uye austenitic simbi zvine kugwinya kusaita ngura. Pakati pavo,17-4PH simbi isina tsvinazvine nharo ndiyo inonyanya kushandiswa nekuda kweiyo yakasarudzika mechanical zvimiro uye nyore kwekugadzira. Asi inofananidzwa sei nemamwe mamakisi ePH akadai se15-5PH, 13-8Mo, 17-7PH, uye Tsika 465? Ichi chinyorwa chinonyura mukati memisiyano yekuumbwa, kurapwa kwekupisa, michina zvivakwa, corrosion resistance, uye mashandisirwo.

Overview of Precipitation-Hardening Stainless Steels

Kunaya-kuomesa simbi dzinowana simba radzo kubva pakuumbwa kwemvura yakanaka musimbi matrix panguva yekuchembera kupisa kwekurapa. Simbi idzi dzakakamurwa muzvikamu zvitatu zvikuru:

1. Martensitic PH masimbi(semuenzaniso,17-4PH, 15-5PH)
2. Semi-austenitic PH masimbi(semuenzaniso, 17-7PH)
3. Austenitic PH simbi(semuenzaniso, A286)

Chikamu chega chega chinopa musanganiswa wakasarudzika wezvivakwa zvinoenderana nezvinodiwa zvemaindasitiri.

17-4PH (UNS S17400): The Industry Standard

Composition:

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

Kupisa Kurapa: Yakagadziriswa uye yakwegura (kazhinji H900 kusvika H1150-M)

Mechanical Properties (H900):

• Tensile Simba: 1310 MPa
• Goho Simba: 1170 MPa
• Kuwedzera: 10%
• Kuoma: ~ 44 HRC

Zvakanakira:

• Simba repamusoro
• Kuramba kuonda kuri pakati nepakati
• Good machinability
• Weldable

Applications:

• Aerospace components
• Nuclear reactors
• Mavharuvhu, shafts, fasteners

Kuenzanisa nemamwe PH Stainless Simbi

15-5PH (UNS S15500)

Composition:

• Zvakafanana ne17-4PH, asi zvine kudzora kwakasimba pane tsvina
• Cr: 14.0–15.5%
• Nhamba: 3.5–5.5%
• Cu: 2.5–4.5%

Misiyano Yakakosha:

• Zvirinani kuchinjika kuomarara nekuda kwekunakisa microstructure
• Kuvandudzwa kwemichina muzvikamu zvakakora

Shandisa Nyaya:

• Aerospace forgings
• Chemical processing equipment

13-8Mo (UNS S13800)

Composition:

• Cr: 12.25–13.25%
• Nhamba: 7.5–8.5%
• Mo: 2.0–2.5%

Misiyano Yakakosha:

• Superior toughness uye corrosion resistance
• Kusimba kwepamusoro pakukora muchinjiko
• Zvidzoreso zvakasimba zvekuumbwa kwekushandisa muchadenga

Shandisa Nyaya:

• Structural aerospace components
• High-performance springs

17-7PH (UNS S17700)

Composition:

• Cr: 16.0–18.0%
• Nhamba: 6.5–7.75%
• Al: 0.75–1.50%

Misiyano Yakakosha:

• Semi-austenitic; inoda basa rinotonhora uye kurapwa kwekupisa
• Zvirinani kuumbwa asi kushomeka kwekushomeka pane 17-4PH

Shandisa Nyaya:

• Aerospace diaphragms
• Bellows
• Springs

Tsika 465 (UNS S46500)

Composition:

• Cr: 11.0–13.0%
• Nhamba: 10.75–11.25%
• Ti: 1.5–2.0%
• Mo: 0.75–1.25%

Misiyano Yakakosha:

• Simba repamusoro-soro (kusvika ku200 ksi tensile)
• Yakanakisa fracture kuoma
• Mutengo wepamusoro

Shandisa Nyaya:

• Zvishandiso zvekuvhiya
• Zvisungo zvendege
• Kudzika giya zvikamu

Kupisa Kurapa Kuenzanisa

Corrosion Resistance Kuenzanisa

• Zvakanakisa:13-8Mo uye Tsika 465
• Kugona:17-4PH uye 15-5PH
• Zvakanaka:17-7PH

Ongorora: Hapana inofananidzwa nekuramba kwecorrosion kweazere austenitic mamakisi se316L.

Machinability uye Weldability

Kufunga Kwemari

• Zvinonyanya Kunyanya Kudhura:17-4PH
• Premium Grades:13-8Mo uye Tsika 465
• Pakati nepakati:15-5PH

Applications Kuenzanisa

Summary

Mhedziso

Nepo 17-4PH ichiramba iri iyo yekuenda-kuPH simbi isina tsvina kune akawanda-chinangwa maapplication, yega yega PH giredhi ine mabhenefiti akasiyana anoita kuti ikwane zvirinani kune zvakati zvinodiwa. Kunzwisisa manuances ari pakati peaya alloys anogonesa mainjiniya emidziyo uye vatengi kuita sarudzo dzine ruzivo zvichibva pasimba, kuoma, kuramba kwecorrosion, uye mutengo.