Ka moralo oa boenjiniere,fana ka khatello ea maikutloke e 'ngoe ea thepa ea bohlokoa ka ho fetisisa ea mochini ha ho khethoa lisebelisoa bakeng sa likarolo tsa sebopeho kapa tse jarang moroalo. E hlalosa ntlha eo ntho e qalang ho senyeha ka polasetiki-e bolelang hore e ke ke ea khutlela sebopeho sa eona sa pele ka mor'a hore mojaro o tlosoe. Ha ho tluoa tabeng ea litšepe tsa alloy,4140 tšepeke e 'ngoe ea likhetho tse ratoang ka ho fetisisa le tse ka tšeptjoang ka lebaka la matla a eona a phahameng a lihlahisoa le ts'ebetso e babatsehang ea mochine.
Sengoliloeng sena se tsoang hosakysteele kenella ka botebo khatellong ea tlhahiso ea tšepe ea 4140, hore na e fapana joang le kalafo ea mocheso, le hore na ke hobane'ng ha e le bohlokoa lits'ebetsong tsa indasteri tsa lefats'e. Hape re tla e bapisa le litšepe tse ling tse tloaelehileng tsa boenjiniere ho u thusa ho etsa khetho e nepahetseng ea thepa.
4140 Steel ke eng?
4140 tšepe ketšepe ea motsoako oa chromium-molybdenume arotsoe tlas'a tsamaiso ea AISI-SAE. E kopanya ho tiea, matla a ho khathala ho matla, le ho thatafala ho hoholo, ho etsa hore e be e loketseng likarolo tse phahameng tsa khatello ea maikutlo likoloing, sefofaneng, oli le khase, le tlhahiso ea mechini.
Motsoako o tloaelehileng oa lik'hemik'hale o kenyelletsa:
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Khabone: 0.38% - 0.43%
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Chromium: 0.80% - 1.10%
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Manganese: 0.75% - 1.00%
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Molybdenum: 0.15% - 0.25%
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silicon: 0.15% - 0.35%
Lintho tsena tse kopantsoeng li sebetsa 'moho ho matlafatsa matla a tšepe a ho hanela ho senyeha ha khatello ea maikutlo ha e ntse e boloka matla a maholo.
Ho Hlalosa Khatello ea Tlhahiso
Khatello ea lihlahisoa, kapafana ka matla, ke khatello e phahameng ea khatello eo thepa e ka e mamellang pele deformation e sa feleng e etsahala. E tšoaea phetoho ho tloha boits'oarong ba elastic (ho hlaphoheloa) ho ea ho boits'oaro ba polasetiki (deformation e sa feleng). Bakeng sa likarolo tsa sebopeho le ho potoloha, khatello e phahameng ea chai e bolela ts'ebetso e ntlafetseng tlas'a mojaro.
Khatello ea chai hangata e lekantsoe ka:
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MPa (megapascals)
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ksi (lik'hilograma tse lik'hilograma ka lisenthimithara tse sekwere)
Ho Fana ka Matla a Tšepe ea 4140 ka Maemo a Fapaneng
Matla a tlhahiso ea4140 tšepe ea motsoakoe itšetlehile haholo ka boemo ba eona ba phekolo ea mocheso. Ka tlase ke maemo a tloaelehileng le boleng ba bona bo lumellanang ba lihlahisoa:
1. Annealed Condition
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Matla a ho Hlaha: 415 - 620 MPa (60 - 90 ksi)
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Matla a Tensile: 655 - 850 MPa
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Matla: ~ 197 HB
Boemo bona bo bonolo bo lumella ho sebetsa hantle haholo empa ha se hantle bakeng sa lits'ebetso tsa ho jara thepa ntle le kalafo e eketsehileng ea mocheso.
2. Boemo bo tloaelehileng
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Matla a ho Hlaha: 650 - 800 MPa (94 - 116 ksi)
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Matla a Tensile: 850 - 1000 MPa
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Matla: ~ 220 HB
Normalized 4140 e ntlafalitse thepa ea meralo mme e sebelisoa bakeng sa lits'ebetso tsa matla a itekanetseng.
3. Q&T (Q&T) Boemo ba Quenched and Tempered
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Matla a ho Hlaha: 850 - 1100 MPa (123 - 160 ksi)
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Matla a Tensile: 1050 - 1250 MPa
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Boima: 28 - 36 HRC
Ena ke boemo bo atileng haholo bakeng sa lits'ebetso tse hlokang khatello e phahameng ea chai. Hosakysteel, boholo ba lihlahisoa tsa tšepe tse 4140 li tlisoa maemong a Q&T ho fihlela litlhoko tse hlokahalang tsa mochini.
Ke Hobane'ng ha Ho Le Bohlokoa Khatello ea Kotulo e Phahameng
Khatello ea lihlahisoa tsa thepa e ama ka ho toba tsela eo e itšoarang ka eona tšebeletsong. Bakeng sa tšepe ea 4140, matla a chai a phahameng a bolela:
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Bophelo bo bolelele ba tšebeletsotlas'a ho peta khafetsa
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Ho hanyetsa deformation e sa felengdikarolong tsa sebopeho
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Matla a ntlafetseng a ho jaralikarolong tse potolohang le tse tsamaeang
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Tšireletso ea moelilits'ebetsong tsa bohlokoa joalo ka li-cranes, li-axles, le li-drill shafts
Melemo ena e bohlokoa liindastering moo ho hloleha ha mechine ho ka lebisang ho theoheng ha nako kapa likotsi tsa polokeho.
Likopo Tse Batlang Matla a Kotulo e Phahameng
Ka lebaka la khatello ea eona e phahameng ea lihlahisoa, tšepe ea 4140 e sebelisoa libakeng tse fapaneng tsa mojaro o phahameng:
Tsa makoloi
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Liase
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Li-gear shafts
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Likarolo tsa phetiso
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Likarolo tse emisitsoeng
Oli le Khase
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Kola melala
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Li-cylinders tsa Hydraulic
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Likarolo tsa pompo ea Frac
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Lisebelisoa tsa lisebelisoa
Sepakapaka
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Lintho tsa lisebelisoa tsa ho lulisa
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Lisebelisoa tsa enjine
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Lithupa tsa tšehetso
Mechine le Lisebelisoa
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Die holders
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Li-jigs tse nepahetseng
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Likopano
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Li-crankshafts
E 'ngoe le e' ngoe ea lits'ebetso tsena e beha thepa ho boima bo phahameng kapa bo kobehang, e leng se etsang hore khatello ea lihlahisoa e be paramente e hlalosang moralo.
4140 vs Litšepe Tse Ling: Papiso ea Matla a Hlahisa
Ha re bapise khatello ea lihlahisoa tsa 4140 le litšepe tse ling tse sebelisoang hangata:
1045 Tšepe ea Khabone
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Matla a ho Hlahisa: 450 - 550 MPa
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Melemo: Ho bonolo ho e sebelisa ebile e na le chelete e ngata
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Cons: Matla a tlaase, ha a tšoanelehe bakeng sa maemo a boima bo phahameng
4340 Alloy Steel
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Matla a ho Hlahisa: 930 - 1080 MPa
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Melemo: Matla a phahameng, ho hanyetsa mokhathala ho molemo
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Cons: Ho theko e boima haholo, ho thata ho mochini ho feta 4140
A36 Tšepe e Bonolo
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Matla a ho Hlahisa: ~ 250 MPa
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Melemo: Theko e tlase, e phahameng ea weldability
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Cons: Ha e loketse likarolo tsa moralo tse hlokang matla
Sebetsa 316
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Matla a ho Hlahisa: ~ 290 MPa
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Melemo: E thibela ho bola
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Cons: Khatello e tlase haholo ea lihlahisoa ho feta 4140
Joalokaha ho bontšitsoe,4140 e fana ka motsoako o leka-lekanengmatla, boima, le moruo, e leng se etsang hore e be se loketseng bakeng sa likarolo tsa meralo tse nang le meroalo e itekanetseng ho isa ho e boima.
Ho Ntlafatsa Matla a Pono ka Phekolo ea Mocheso
At sakysteel, re sebelisa mekhoa e nepahetseng ea phekolo ea mocheso ho ntlafatsa thepa ea mochine ea 4140 steel:
Ho khutsisa le ho khutsisa
E kenyelletsa ho futhumatsa tšepe ho ~ 845 ° C ebe ho pholile ka potlako (ho tima), ho lateloa ke ho futhumatsa mocheso o tlase (ho futhumatsa). Ts'ebetso ena e eketsa khatello ea maikutlo, ho tiea le ho hanyetsa mokhathala.
Ho tloaeleha
E futhumatsa tšepe ho ~ 870 ° C e lateloa ke ho pholisa moea, ho hloekisa sebopeho sa lijo-thollo le ho ntlafatsa matla.
Ho thatafala ha Bokahohle (mohlala, Nitriding, Induction Hardening)
Mekhoa ena e eketsa boima ba holim'a metsi ha e ntse e boloka boima ba mantlha, e matlafatsa bokhoni ba thepa ea ho jara mojaro.
Ka taolo e tiileng holim'a lits'ebetso tsena, sakysteel e netefatsa hore thepa ea tšepe e lumellana le litlhoko tsa morero ka mong.
Kamoo re Lekang Kateng Khatello ea Maikutlo ho sakysteel
Ho etsa bonnete ba hore tšepe ea rona ea 4140 e kopana le litekanyetso tsa mochini, re etsa liteko tsa tlhahiso le ho tsitsisa re sebelisa:
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Mechini ea Teko e Akaretsang (Li-UTM)
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Litekanyetso tsa liteko tsa ASTM E8 / ISO 6892
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Setifikeiti sa EN10204 3.1
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Netefatso e Ikemetseng ea mokhatlo oa boraro (boikhethelo)
Sehlopha se seng le se seng se netefalitsoe bakeng sa ho lumellana le ho lumellana le litloaelo tsa machaba.
Thuto ea 'Nete ea Lefatše
Moreki lekaleng la oli le khase o kopile litšepe tse chitja tsa Q&T 4140 bakeng sa lisebelisoa tsa ho thella. Re isitse thepa ka:
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Matla a ho Hlahisa: 1050 MPa
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Mamello ea Diameter: h9
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Surface Finish: E phethiloe ebile e bentšitsoe
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Setifikeiti: EN10204 3.1 + tlhahlobo ea ultrasonic (UT Level II)
Ka mor'a likhoeli tsa 14 tšebeletsong, likaroloana li ne li sa bontše matšoao a ho senyeha ho sa feleng kapa ho hlōleha-bopaki ba horesakysteel4140 tšepe e fana ka tšepiso ea ts'ebetso ea eona.
Qetello
4140 e ka kena tlas'a mojaro e matla hakae?Karabo e itšetlehile ka boemo ba eona—empa ha mocheso o tšoaroa hantle, oa fanae fana ka matla a phahameng joalo ka 1100 MPa, ho e etsa sesebelisoa se matla bakeng sa ts'ebetso ea meralo, ea mochini, le e nepahetseng.
Hore na o rala li-shafts tse sebetsang hantle haholo, li-brackets tse belehang, kapa lisebelisoa tsa hydraulic,sakysteelke mohloli oa hau o tšepahalang oa tšepe ea 4140 e tšepahalang, e lekiloeng le e matla haholo.
Nako ea poso: Jul-29-2025