Mokhoa oa ho Futhumatsa Tšepe e sa Khabeng ea 17-4 PH

Tšepe e sa ruseng ea 17-4 PH, e tsejoang hape e leAISI 630, ke e 'ngoe ea litšepe tse sa hloekang tse sebelisoang haholo ho thatafatsa pula. E ananeloa ka lebaka lamatla a phahameng, ho hanyetsa mafome, le ho thatafala, e leng se etsang hore e lokele diindasteri tse hlokang tjhelete e ngata tse kang tsa difofane, oli le kgase, ts'ebetso ya dikhemikhale, tlhahiso ya motlakase le ditshebediso tsa lewatle.

Karolo ea bohlokoa ea ho sebelisa tšepe e sa hloekang ea 17-4 PH kemokhoa oa kalafo ea mocheso, e leng se dumellang baenjiniere ho fetola matla a thepa, ho tiea ha yona le ho hanyetsa mafome bakeng sa ditshebediso tse fapaneng. Sengoloa sena se hlalosa ka botlalomokhoa oa ho futhumatsa tšepe e sa ruseng ea 17-4 PH, maemo a fapaneng a boemo (a kang H900, H1025, H1150), mekhoa ea mohato ka mohato, le lintlha tsa bohlokoa ho netefatsa ts'ebetso e ntle ka ho fetisisa.

Tšepe e sa Khaotseng ea 17-4 PH ke eng?

Tšepe e sa ruseng ea 17-4 PH ketšepe e sa hloekang e thatafatsang pula ea martensitice nang le chromium, nickel le koporo.

Sebopeho sa Lik'hemik'hale (Se Tloaelehileng):

• Chromium (Cr): ~15–17%

• Nikele (Ni): ~3–5%

• Koporo (Cu): ~3–5%

• Niobium (Nb): 0.15–0.45%

• Tšepe (Fe): Tekanyo

Likarolo tsa Bohlokoa:

• Matla a ho tsitlella a phahameng (ho fihlela ho 1310 MPa)

• Khanyetso e ntle ea ts'enyeho e ts'oanang le tšepe e sa hloekang ea 304

• Thepa e ntle haholo ea mechini ho fihlela ho 600°F (316°C)

• E ka phekoloa ka mocheso ho ea maemong a fapaneng a thata

Hobaneng o lokela ho sebelisa tšepe e sa hloekang ea 17-4 PH bakeng sa mocheso o phahameng?

1. Matlotlo a Mekaniki a Loketseng

   • Kalafo ea mocheso e lumella baenjiniere ho fetola ho thatafala, matla a ho hlahisa le ho tiea.

2. Khanyetso e Ntlafetseng ea ho Roala

   • Maemo a thata joalo ka H900 a eketsa ho hanyetsa ho kgohlahala.

3. Khanyetso e Hlophisitsoeng ea Ts'enyeho

   • Maemo a itseng a leka-lekanya matla le ts'ebetso ea ho bola.

4. Botsitso ba Tekanyo

   • Kalafo e nepahetseng ea mocheso e fokotsa ho sotha le khatello ea maikutlo nakong ea ts'ebeletso.

Mokhoa oa ho Phekola Mocheso bakeng sa Tšepe e sa Khabeng ea 17-4 PH

Mohato oa 1: Tharollo ea ho Hloekisa (Boemo ba A)

• Futhumatsa thepa ka ho lekana ho fihlela1900°F (1040°C).

• Tšoara mochesong bakeng saBonyane metsotso e 30.

• E pholisa ka potlako ho fihlela mochesong oa kamore (e pholile moeeng kapa e tima oli ho latela botenya).

Sephetho:E hlahisa sebopeho se bonolo sa martensitic se sebetsang hantle le se loketseng kalafo ea botsofali.

Mohato oa 2: Ho thatafatsa Pula (Botsofali)

Kamora ho annealing ka tharollo, thepa e ea fetakalafo ea botsofalimochesong o laolwang. Mohato ona o baka ho thehwa ha matheba a manyane (haholo-holo mekhahlelo e ruileng ka koporo), e leng se matlafatsang matrix ya martensitic.

Maemo a Tloaelehileng a Botsofali:

1. Boemo ba H900

   • Mocheso ho900°F (482°C)ka hora e le 'ngoe.

   • Moea o pholileng.

   • Matla a phahameng ka ho fetisisa (ho fihlela ho 200 ksi tensile), ho ba thata ho tlase.

2. Boemo ba H1025

   • Mocheso ho1025°F (552°C)ka lihora tse 4.

   • Moea o pholileng.

   • Matla le ho tiea ho leka-lekaneng.

3. Boemo ba H1075

   • Mocheso ho1075°F (580°C)ka lihora tse 4.

   • Moea o pholileng.

   • Matla a tlase ho feta H900, ho ba thata ho ntlafetse.

4. Boemo ba H1150

   • Mocheso ho1150°F (621°C)ka lihora tse 4.

   • Moea o pholileng.

   • Ho tiea ho babatsehang le ho hanyetsa ho bola, ho fokotsa boima.

5. Kalafo e Habeli ea H1150 (H1150D)

   • Futhumatsa ho fihlela ho 1400°F (760°C) ka lihora tse 2 → Pholisa moea.

   • Futhumatsa hape ho 1150°F (621°C) ka lihora tse 4 → Pholisa moea.

   • E ntlafatsa ho hanyetsa ho petsoha ha mafome a khatello.

Thepa ho latela Boemo ba Kalafo ea Mocheso