Litsupa tsa tekheniki ke life carburizing le quenching likarolo?

Carburizing le quenching e etsa lera la martensite le nang le carbon content e ngata holim’a karolo, e nang le boima bo phahameng, lik’habohaedreite tse phahameng le khanyetso e phahameng ea ho apara. Moko oa motheo ke mohaho o tlaase oa carbon martensite, kahoo khatello ea khatello ea holimo e kholo. Kakaretso e thata e phahame. Litšobotsi tsena li etsa hore carburizing le quenching e sebelisoe haholo ka likere le likarolo tse ling tse hlokang khanyetso e phahameng ea ho roala, matla a phahameng a mokhathala, le matla a holimo a ho kopana le mokhathala. Ho thatafala ha induction ho na le litšobotsi tsa ho futhumatsa ka potlako le ho pholisa ka potlako, e leng ho eketsang boholo ba lijo-thollo tsa thepa. Ha e ntse e fumana boima bo phahameng haholo, e fumana index ea toughness e phahameng, ka hona e ntlafatsa ts’ebetso ea likarolo.

1. Ho hanyetsa abrasion

Likarolo tsa carburized le tse tingoeng li na le khanyetso e phahameng ea ho apara ka lebaka la boima bo phahameng le li-carbides holim’a metsi. Ho thatafala ha induction ho ka fumana boima bo phahameng ka tlasa khabone e tlase, mme ho hanyetsa ho roala ho boetse ho amana le sebopeho sa eona sa microstructure.

20CrMnTiH3 carburizing quenching le 45 steel induction quenching e entsoe ka mehlala e tloaelehileng ea moaparo, ka boima ba 62 ~ 62.5HRC, e lekiloeng mochining oa liteko oa ho apara oa M-200, ‘me likarolo tse apereng li tima T10. Kamora makhetlo a limilione tse 1.6 tsa ho roala, sampole ea carburized e ile ea lahleheloa ke 4.0 mg mme sampole e tingoeng ea induction e ile ea lahleheloa ke 2.1 mg. Ke mokhoa ofe o etsang hore mehlala e thata ea induction e be le khanyetso e phahameng ea ho apara? Ke habohlokoa ho ithuta.

2. Matla

Ka kakaretso ho lumeloa hore matla a amana le boima, ‘me boima bo tšoanang bo ka fumana matla a tšoanang. Bakeng sa likarolo tse itseng, ke likarolo life tse ling tse amanang le eona? Re lekile mehlala e tloaelehileng ea sebopeho sa dumbbell e entsoeng ka 20CrMnTiH3 carburizing le quenching le 45 steel, 40CrH, 40MnBH induction quenching. Karolo e sebetsang ea bophara ba mohlala e ne e le 20mm, ‘me matla a matla a lekantsoeng e ne e le 819MPa, 1184MPa, 1364MPa, Ho 1369MPa, matla a lisampole tse ‘maloa tsa tšepe ea carbon steel ka mor’a ho tima li-induction a phahame haholo ho feta a likarolo tse entsoeng ka carburized.

Liphello tsa mekhoa e ‘meli li bapisoa. Bokaholimo ba sampole ea carburized le e tingoeng ke high-carbon martensite, carburized layer ke 1.25mm, boima ke 62-63HRC, ‘me mantlha ke martensite e tlase ea carbon,’ me boima ke 32HRC. Bokaholimo ba sampole e thata ea induction ke medium-carbon martensite, botebo ba lera le thata ke 3.6mm, boima ke 62HRC, ‘me mantlha ke sorbite e futhumetseng, boima ke 26HRC. Ho ka fumanoa hore ho na le phapang e kholo botebong ba lera le thatafalitsoeng ka holim’a metsi le fumanoang ke mekhoa e ‘meli ea phekolo,’ me ho thatafala ha induction ho ka fumana lera le thata le tebileng, ka hona ho fumana matla a mangata. Ka hona, ha re buisana ka hore na ke mokhoa ofe oa ho matlafatsa o leng molemo, ha rea ​​​​lokela ho o hlahloba feela ho tloha ho micro perspective, empa hape re o nahane ka mokhoa oa macro.

3. Matla a mokhathala

Kamora ho thatafala ha carburizing le induction, bokaholimo ba likarolo bo matlafatsoa ka mokhoa o atlehileng, ‘me khatello e kholo ea masala e thehoa,’ me ka bobeli ba na le matla a phahameng a mokhathala.

Likarolo tsa lisebelisoa tse nang le modulus ea 2.5 li ile tsa khethoa bakeng sa lipatlisiso, ‘me li ile tsa chesoa le ho tima ka 20CrMnTiH3 ka botebo ba carburizing ea 1.2mm; Litšepe tse 45 le 42CrMo li ne li thatafalitsoe ka botebo ba ho tima motso oa leino la 2.0mm. Ho thatafala ha 61 ~ 63HRC, ‘me meno a fatše ka mor’a ho phekoloa mocheso. Teko ka mochine oa ho hlahloba mokhathala ho latela mokhoa oa ho jarisa o bontšitsoeng ho Setšoantšo sa 1. Mokhathala oa bohareng o kobehang meroalo ea khatello ea ho qetela ea lisebelisoa tse tharo tse fapaneng le meno a nang le mocheso a nang le mocheso ke 18.50kN, 20.30kN le 28.88kN, ka ho latellana. Matla a mokhathala a 42CrMo induction hardened gears a phahame ka 56% ho feta a 20CrMnTiH3 carburizing le quenching, e nang le melemo e mengata. Ho hlahloba mochine oa eona, hoa hlokahala ho qala ka mohaho o thata oa lera, boemo ba khatello ea kelello ea holim’a metsi, sebopeho sa pelo le boima.

4. Ikopanye le matla a mokhathala

Bakeng sa likarolo tsa gear, ho hloleha ha mokhathala ho kopana le holim’a leino hape ke mokhoa o ka sehloohong oa ho hlōleha. Li-gear tse sebetsang ka thata li na le litlhoko tse tlase haholo bakeng sa mokhathala oa ho kopana, le hore na ho thatafalloa ha induction ho ka nka sebaka sa carburizing le ho thatafala ka likere tse itseng tse boima, index ena ke litaba tse lokelang ho hlahlojoa. Lipatlisiso tsa rona sebakeng sena ha lia teba ka ho lekaneng.

5. Ho tima deformation

Ts’ebetso ea carburizing e na le mocheso o phahameng, nako e telele le deformation e kholo ea ho tima. Mokhoa o latelang oa ho sila o tla tšesaane ka holim’a metsi ka matla a phahameng ka ho fetisisa le khatello e phahameng ka ho fetisisa ea khatello, e leng se fellang ka ho fokotseha ha matla a karolo. Carburizing le ho tima likere ho ntse ho sebelisoa theknoloji ea ho tima mochine oa khatiso, sepheo ke ho fokotsa deformation ea ho tima. The deformation ea induction harding e batla e le nyane, ‘me ka lebaka la botenya ba lera le tingoeng, phello ea ho sila ka botebo bo thata e batla e le nyane.