Waa maxay Farqiga u dhexeeya 17-4PH iyo Biraha- Adkeynta Roobka Kale?

Waa maxay Farqiga u dhexeeya 17-4PH iyo Biraha- Adkeynta Roobka Kale?

Hordhac

Biraha birta ah ee adag ee roobka (PH steels) waa nooc ka mid ah alloysyada u adkaysta daxalka kuwaas oo isku daraa xoogga birta martensitic iyo austenitic oo leh iska caabin aad u wanaagsan. Waxaa ka mid ah.17-4PH birta aan lahaynwaxaa lagu doodi karaa in uu yahay kan ugu isticmaalka badan iyadoo ay ugu wacan tahay sifooyinkiisa makaanikada ee gaarka ah iyo sahlanaanta wax-soo-saarka. Laakin sidee loo barbar dhigaa buundooyinka kale ee PH sida 15-5PH, 13-8Mo, 17-7PH, iyo Custom 465? Maqaalkani wuxuu si qoto dheer u galayaa kala duwanaanshaha halabuurka, daaweynta kulaylka, sifooyinka farsamada, caabbinta daxalka, iyo codsiyada.

Dulmar guud oo ku saabsan Roobab-Adayga Biraha Aan-ahaanka lahayn

Biraha adkeysanaya roobabku waxay xooggooda ka helaan samaynta roobab fiican oo ku jira matrixka birta inta lagu jiro daawaynta kulaylka gabowga. Birahani waxa loo qaybiyaa saddex qaybood oo waaweyn:

1. Biraha PH ee Martensitic(tusaale,17-4PH, 15-5PH)
2. Semi-austenitic birta PH(tusaale, 17-7PH)
3. Biraha Austenitic PH(tusaale, A286)

Qayb kastaa waxay bixisaa isku-dar gaar ah oo guryaha ah oo ku habboon baahiyaha warshadeed ee gaarka ah.

17-4PH (UNS S17400): Heerka Warshadaha

Halabuurka:

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

Daawaynta kulaylkaXalka-la daweeyay oo da'da ah (sida caadiga ah H900 ilaa H1150-M)

Guryaha Makaanikada (H900):

• Awoodda Xoojinta: 1310 MPa
• Awoodda Wax-soo-saarka: 1170 MPa
• Kordhinta: 10%
• Adag: ~ 44 HRC

Faa'iidooyinka:

• Xoog sare
• Iska caabbinta daxalka dhexdhexaadka ah
• Mashiinka wanaagsan
• Weldable

Codsiyada:

• Qaybaha hawada sare
• Nuclear reactors
• Valves, shafts, xirayaasha

Isbarbardhigga Biraha Aan-lahayn ee kale ee PH

15-5PH (UNS S15500)

Halabuurka:

• La mid ah 17-4PH, laakiin leh kontarool adag oo wasakhda ah
• C: 14.0-15.5%
• Ni: 3.5-5.5%
• Cu: 2.5-4.5%

Farqiga Muhiimka ah:

• Qallafsanaan wanaagsan oo ka sii wanaagsan sababtoo ah qaab-dhismeed yar oo wanaagsan
• Guryaha farsamada ee la hagaajiyay ee qaybaha dhumuc weyn

Isticmaal Kiisas:

• Aerospace forgings
• Qalabka farsamaynta kiimikada

13-8Mo (UNS S13800)

Halabuurka:

• C: 12.25-13.25%
• Ni: 7.5-8.5%
• Mo: 2.0-2.5%

Farqiga Muhiimka ah:

• Adkaynta sare iyo iska caabinta daxalka
• Xoog sare oo ka dhumuc weyn qaybaha isgoysyada
• Koontaroolada halabuurka adag ee isticmaalka hawada sare

Isticmaal Kiisas:

• Qaybaha hawada qaab dhismeedka
• ilo waxqabad sare leh

17-7PH (UNS S17700)

Halabuurka:

• C: 16.0-18.0%
• Ni: 6.5-7.75%
• Al: 0.75-1.50%

Farqiga Muhiimka ah:

• Semi-austenitic; waxay u baahan tahay shaqo qabow iyo daaweyn kulayl
• Qaabaynta ka wanaagsan laakiin iska caabbinta daxalka ka hooseeya 17-4PH

Isticmaal Kiisas:

• Diaphragms hawada sare
• Bellows
• Springs

Custom 465 (UNS S46500)

Halabuurka:

• C: 11.0-13.0%
• Ni: 10.75-11.25%
• Ti: 1.5-2.0%
• Mo: 0.75-1.25%

Farqiga Muhiimka ah:

• Xoog aadka u sarreeya (illaa 200 ksi tensile)
• Adag jabka oo heer sare ah
• Qarash sare

Isticmaal Kiisas:

• Qalabka qalliinka
• Xidhiidhiyayaasha diyaaradaha
• Qaybaha gegida

Isbarbardhigga Daaweynta Kulaylka

Isbarbardhigga Iska caabinta Daxalka

• ugu fiican:13-8Mo iyo Custom 465
• Wacan:17-4PH iyo 15-5PH
• Cadaalad:17-7PH

Fiiro gaar ah: Ma jiro mid u dhigma iska caabbinta daxalka ee buundooyinka austenitic oo dhammaystiran sida 316L.

Machinability iyo Weldability

Tixgelinta Qiimaha

• Inta ugu Kharashka badan:17-4PH
• Darajooyinka qiimaha leh:13-8Mo iyo Custom 465
• dheeli tiran:15-5PH

Isbarbardhigga Codsiyada

Soo koobid

Gabagabo

Iyadoo 17-4PH ay weli tahay tegidda birta PH ee codsiyo badan oo ujeedo-guud ah, mid kasta oo ka mid ah darajo PH oo kale ayaa leh faa'iidooyin kala duwan oo ka dhigaya mid ku habboon shuruudaha gaarka ah. Fahamka nuucyada udhaxeeya alloys-yadan waxay awood u siinaysaa injineerada agabka iyo iibsadayaasha inay sameeyaan go'aamo xog ogaal ah oo ku salaysan xoog, adkeyd, iska caabin daxalka, iyo qiimaha.