4140 tšepe ke tšepe e tsebahalang ea alloy e tsebahalang ka matla a eona, ho tiea le ho feto-fetoha ha maemo. Ke ea lelapa la litšepe tsa chromium-molybdenum, tse fanang ka motsoako o ikhethang oa thepa ea mochini e etsang hore e be khetho e ratoang bakeng sa lits'ebetso tsa indasteri. Baenjineri, baetsi ba thepa le bahlahisi ba sebelisa tšepe ena haholo bakeng sa ntho e 'ngoe le e 'ngoe ho tloha ho likarolo tsa likoloi ho isa ho tsa mochini.
Sehloohong sena sa SEO, sakysteel e fana ka tlhaloso e akaretsang ea4140 tšepe, ho kenyelletsa lik'hemik'hale tsa eona, thepa ea mochine, mekhoa ea phekolo ea mocheso, le tšebeliso e tloaelehileng.
Sehlopha sa 4140 Steel
4140 ke tšepe e tlaase ea alloy e oelang tlas'a tsamaiso ea SAE-AISI. E boetse e tsejoa e leAISI 4140, EN19 (Europe), leSCM440 (ea Japane). Lebitso "4140" le bolela litaba tse itseng tsa alloy:
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"41" e bontša tšepe ea chromium-molybdenum
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"40" e emela khabone e ka bang teng (0.40%).
4140 tšepe ha se tšepe e sa hloekang, kaha ha e na chromium e lekaneng ho fana ka khanyetso ea kutu. Ho e-na le hoo, e nkoa e le ea bohlokoa ka lebaka la matla a eona a mochine le ho thatafala ka mor'a phekolo ea mocheso.
Sebopeho sa Lik'hemik'hale sa 4140 Steel
Motsoako oa lik'hemik'hale oa 4140 ke oona o e fang thepa ea eona e ntlafalitsoeng ea mochini. Mefuta e tloaelehileng e kenyelletsa:
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Khabone (C):0.38% - 0.43%
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Chromium (Cr):0.80% - 1.10%
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Manganese (Mn):0.75% - 1.00%
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Molybdenum (Mo):0.15% - 0.25%
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Silicon (Si):0.15% - 0.35%
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Phosphorus (P):≤ 0.035%
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Sebabole (S):≤ 0.040%
Lintho tsena li sebetsa 'moho ho matlafatsa ho thatafala, ho hanyetsa ho apara, le ho tšoarella ka kakaretso, ho etsa hore 4140 e be thepa ea ho ea bakeng sa likarolo tse hlokahalang tsa mochine.
Thepa ea Mechini ea 4140 Steel
4140 e fana ka mefuta e mengata e khahlang ea thepa ea mochini, haholo kamora kalafo e nepahetseng ea mocheso. Tsena li kenyelletsa:
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Matla a tšepe:Ho fihla ho 1100 MPa (160 ksi)
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Kotulo e Matla:E ka ba 850 MPa (123 ksi)
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Elongation at Break:Hoo e ka bang 20%
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Ho thatafala:Ka tloaelo 197 ho isa ho 235 HB maemong a anneal, ho fihla ho 50 HRC kamora ho tima le ho halefa.
Litekanyetso tsena li ka fapana ho itšetlehile ka mofuta oa tšepe (bar, poleiti, forged) le boemo ba phekolo ea mocheso.
Phekolo ea Mocheso ea 4140 Steel
Phekolo ea mocheso ke ts'ebetso ea bohlokoa e ntlafatsang ts'ebetso ea4140 tšepe. Steel e ka etsoa ka mekhoa e latelang:
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Anealing
E pholile butle ho tloha ho 850 ° C ho ntlafatsa machina le ho fokotsa khatello ea kelello ka hare. Sena se fella ka sebopeho se bonolo se nang le ductility e ntlafetseng. -
Ho tloaeleha
E futhumetse ho fihlela ho 870 ° C ho ntlafatsa sebopeho sa lijo-thollo. E fana ka tekanyo ea matla le ho tiea. -
Ho khutsisa le ho khutsisa
E thatafalitsoe ke ho futhumatsa hoo e ka bang 845°C le ho pholile ka potlako ka har'a oli kapa metsing, ebe e lateloa ke ho halefa ho ea maemong a thata a lakatsehang. Sena se eketsa haholo matla le ho hanyetsa ho apara. -
Ho Fokotsa Khatello
E etsoa hoo e ka bang ka 650°C ho fokotsa khatello ea kelello e setseng e tsoang ho machining kapa welding.
Ho sakysteel, re fana ka4140 tšepemaemong a fapaneng a phekoloang ka mocheso ho latela litlhoko tsa bareki, ho netefatsa ts'ebetso e phahameng ka ho fetisisa kopong ea hau.
Melemo ea 4140 Steel
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Karolelano e Phahameng ea Matla-ho-Boima:E loketse bakeng sa lisebelisoa tse nang le boima ba 'mele.
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Ho hanyetsa Mokhathala o Molemo:E mamella cyclic loading, e loketseng li-gear le shafts.
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Hardenability e Hlollang:E fihlella boima bo phahameng ka mor'a ho tima.
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Boikemisetso:Habonolo machable ka annealed kapa maemo a tloaelehileng.
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Weldability:E ka ts'oaroa ka mokhoa o nepahetseng oa ho futhumatsa pele le kalafo ea post-weld.
Melemo ena e etsa hore tšepe ea 4140 e be khetho ea moruo bakeng sa lits'ebetso tse ngata tsa khatello ea maikutlo.
Lisebelisoa tsa 4140 Steel
Ka lebaka la matla a eona a mochini le ho feto-fetoha ha maemo, tšepe ea 4140 e sebelisoa liindastering tse fapaneng:
Indasteri ea Likoloi
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Liase
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Li-crankshafts
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Li-gears
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Liknuckle tsa ho tsamaisa
Oli le Khase
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Kola melala
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Lisebelisoa tsa lisebelisoa
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Melamu ea ho kopanya
Sepakapaka
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Likarolo tsa lisebelisoa tsa ho lulisa
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Mekotlo
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Likarolo tsa sebopeho sa khatello e phahameng
Mechini ea Liindasteri
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Likopano
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Likarolo tse entsoeng
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Die holders
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Li-spindle
At sakysteel, re fane ka eona4140 tšepelihlahisoa bakeng sa bareki ho pholletsa le makala ana, tse fanang ka boleng bo tšepahalang le mokhoa o nepahetseng.
Kamoo 4140 e Bapisang le Litšepe Tse Ling
4140 vs. 1045 Carbon Steel:
4140 e fana ka khanyetso e ntle ea ho roala le matla a phahameng a ho tiea ka lebaka la likarolo tsa alloying. 1045 e theko e tlase empa ha e tšoarelle nako e telele.
4140 vs. 4340 Tšepe:
4340 e na le litaba tsa nickel tse phahameng, tse fanang ka boima bo betere le ho hanyetsa mokhathala. 4140 e na le litšenyehelo tse ngata bakeng sa tšebeliso e akaretsang.
4140 vs. Stainless Steel (mohlala, 304 kapa 316):
Litšepe tse sa hloekang li fana ka khanyetso ea kutu empa matla a tlase. 4140 e ea rateha lits'ebetsong tse nang le meroalo e mengata ntle le ho pepesehela libaka tse senyang.
Liforomo li fumaneha ho sakysteel
sakysteel e fana ka tšepe ea 4140 ka mefuta e latelang ea sehlahisoa:
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Li-Round Bars (tse Chesang, Tse Batsoang Tse Batang, Tse Peeled)
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Libaka tse Sephara le Lipoleiti
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Li-blocks le mehele e entsoeng
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Hollow Bars le Tubes (ka kopo)
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Likheo tse nepahetseng tsa ho khaola ka boholo
Lihlahisoa tsohle li fumaneha kaSetifikeiti sa EN10204 3.1, hape re fana ka lits'ebeletso tsa mochini oa CNC le kalafo ea mocheso.
Qetello
4140 ke tšepe ea alloy e feto-fetohang, e sebetsang hantle haholo e fihlelang litlhoko tsa lits'ebetso tse fapaneng tse hlokang. Motsoako oa eona oa matla, ho tiea le ho sebetsa hantle ka litšenyehelo ho etsa hore e be thepa e ratoang ke baenjiniere ba mechini le bahlahisi lefatšeng ka bophara.
Hore na o hloka lisebelisoa tse tala kapa lisebelisoa tse felileng,sakysteelke molekane oa hau eo u mo tšepang bakeng sa tšepe ea 4140 alloy. Ikopanye le sehlopha sa rona sa tekheniki kajeno ho buisana ka litlhoko tsa hau le ho fumana quote e lokiselitsoeng.
Nako ea poso: Jul-29-2025