Likarolo tse ngata tsalisebelisoa tse ncha tse fokotsang matlalelisebelisoa tsa likoloimorero o hloka ho phunya ka mor'a ho sila ka lisebelisoa, e leng ho tla senya boleng ba leino, esita le ho ama ts'ebetso ea NVH ea tsamaiso. Pampiri ena e ithuta ka leino holim'a makukuno a maemo a fapaneng a ho phunya le likarolo tse fapaneng pele le ka mor'a ho phunya. Liphetho li bontša hore ho thunngoa peening tla eketsa leino holim'a kaba, e leng angoa ke litšobotsi tsa likarolo, thunya peening tshebetso meedi le lintlha tse ling; Tlas'a maemo a hona joale a ts'ebetso ea tlhahiso ea li-betch, boholo ba bokhopo ba leino ka mor'a ho phunya ke makhetlo a 3.1 ho feta pele a thunya. Tšusumetso ea leino holim'a leino holim'a ts'ebetso ea NVH e tšohloa, 'me mehato ea ho ntlafatsa ho ba thata ka mor'a ho phunya ho etsoa tlhahiso.

Tlas'a maemo a ka holimo, pampiri ena e tšohla lintlha tse tharo tse latelang:

Tšusumetso ea li-parameter tsa ts'ebetso ea ho phunya holim'a leino holim'a leino;

The amplification degree ea thunngoa peening holim'a leino holim'a makgwakgwa tlas'a maemo a teng a batch tlhahiso tshebetso ya maemo a;

Tšusumetso ea ho eketseha ha leino holim'a leino holim'a ts'ebetso ea NVH le mehato ea ho ntlafatsa ho ba thata ka mor'a ho phunya.

Shot peening e bolela ts'ebetso eo ho eona li-projectile tse ngata tse nang le boima bo phahameng le motsamao o phahameng oa lebelo li otlang bokaholimo ba likarolo. Tlas'a tšusumetso e phahameng ea lebelo la projectile, bokaholimo ba karolo bo tla hlahisa likoti le deformation ea polasetiki e tla etsahala. Mekhatlo e pota-potileng likoting e tla hanana le deformation ena mme e hlahise khatello e setseng ea khatello. Ho phunyeletsa ha likoti tse ngata ho tla etsa lera le ts'oanang la khatello ea khatello holim'a karolo, kahoo ho ntlafatsa matla a mokhathala a karolo. Ho ea ka mokhoa oa ho fumana lebelo le phahameng ka ho thunngoa, ho phunya ho thunngoa hangata ho arotsoe ka peening ea moea e hatelitsoeng le ho pening ea centrifugal, joalo ka ha ho bontšitsoe setšoantšong sa 1.

Moea o hatelitsoeng oa ho thunya o nka moea o hatelitsoeng joalo ka matla a ho fafatsa sethunya; Centrifugal shot blasting e sebelisa enjene ho khanna impeller ho potoloha ka lebelo le phahameng ho akhela thunya. The key process parameters of shot peening include saturation strength, coverage and shot peening medium properties (material, size, shape, hardness). Saturation matla ke paramethara ho tšoaea ho thunngoa peening matla, e leng e bontšoa ke arc bophahamo ba (ke hore, ho kobeha tekanyo ea Almen teko sekotoana ka mor'a ho thunngoa peening); Sekhahla sa tšireletso se bolela karo-karolelano ea sebaka se koahetsoeng ke sekoti ka mor'a hore ho thunngoe ho phunyeletse sebakeng sohle sa sebaka sa ho thunngoa; Ka tloaelo sebelisoa ho thunngoa peening mecha ea litaba kenyeletsa tšepe terata seha thunngoa, lahla tšepe thunngoa, ceramic thunya, khalase thunngoa, joalo-joalo The boholo, sebopeho le ho thatafala ha thunngoa peening mecha ea litaba ke tsa limaraka tse fapaneng. Litlhokahalo tse akaretsang tsa ts'ebetso ea likarolo tsa shaft ea phetisetso li bonts'itsoe ho Lethathamo la 1.

Karolo ea teko ke "shaft gear" ea 1/6 ea projeke e nyalisitsoeng. Sebopeho sa lisebelisoa se bontšoa ho Setšoantšo sa 2. Ka mor'a ho sila, microstructure ea leino ke Kereiti ea 2, boima ba holim'a metsi ke 710HV30, 'me botebo bo sebetsang bo thata ba lera ke 0.65mm, tsohle ka har'a litlhoko tsa tekheniki. Bokhopo ba holim'a leino pele le thunngoa bo bontšoa ho Lethathamo la 3, 'me ho nepahala ha boemo ba leino ho bontšoa ho Lethathamo la 4. Ho ka bonoa hore leino holim'a leino pele le thunngoa le peening le molemo, 'me lekhalo la leino le boreleli.

Leano la teko le litekanyetso tsa teko

Mochini o hatelitsoeng oa ho penta o sebelisoa tlhahlobong. Ka lebaka la maemo a teko, ho ke ke ha khoneha ho netefatsa phello ea thepa ea peening medium (thepa, boholo, boima). Ka hona, thepa ea ho thunngoa peening medium e lula e le tekong. Feela tshusumetso ya matla saturation le kgaso ka leino holim roughness ka mor'a ho thunya peening e netefalitsoeng. Sheba Lethathamo la 2 bakeng sa morero oa teko. Ts'ebetso e ikhethileng ea litekanyetso tsa liteko ke e latelang: taka sekhahla sa "saturation" (setšoantšo sa 3) ka tlhahlobo ea setlankana sa Almen ho fumana hore na sebaka sa ho phalla ha metsi ke sefe, e le ho koala khatello ea moea e hatelletsoeng, ho phalla ha tšepe, lebelo la ho tsamaea ha nozzle, sebaka sa nozzle ho tloha likarolong tse ling. le lisebelisoa tse ling tsa lisebelisoa.

sephetho sa teko

Lintlha tse mabapi le leino ka mor'a ho phunya li bontšoa ho Lethathamo la 3, 'me ho nepahala ha boemo ba leino ho bontšoa ho Lethathamo la 4. Ho ka bonoa hore tlas'a maemo a mane a ho phunya, leino le ka holimo le ntse le eketseha 'me lekhalo la leino le fetoha lekotiko. convex ka mora ho thunngoa. Karo-karolelano ea roughness ka mor'a ho fafatsa ho roughness pele fafatsa e sebediswa ho tšoaea roughness magnification (Letlapa la 3). Hoa hlokomeleha hore ho hōlisa bokhopo ho fapane tlas'a maemo a mane a tshebetso.

Ho latedisa ka Batch ho Hodisa Mathata a Leino ka Ho Hlakola

Liphetho tsa liteko Karolong ea 3 li bonts'a hore bokhopo ba leino bo eketseha ka likhato tse fapaneng ka mor'a ho phunya ka mekhoa e fapaneng. E le hore u utloisise ka botlalo matlafatso ea ho phunya ka holim'a leino holim'a leino le ho eketsa palo ea lisampole, lintho tse 5, mefuta e 5 le likarolo tse 44 ka kakaretso, li ile tsa khethoa ho latela mokhoa o boima pele le ka mor'a ho thunngoa ho peening tlas'a maemo a ho thunngoa ha lihlahisoa tsa batch. mokgoa wa peening. Sheba Lethathamo la 5 bakeng sa lintlha tsa 'mele le tsa lik'hemik'hale le tlhaiso-leseling ea ts'ebetso ea ho phunya ea likarolo tse lateloang kamora ho sila. Setšoantšo sa 4. Setšoantšo sa 4 se bontša hore boholo ba leino le thata pele le phunya ke Rz1.6 μ m-Rz4.3 μ m; Kamora ho phunya, mahoashe a eketseha, 'me mefuta e fapaneng ea kabo ke Rz2.3 μ m-Rz6.7 μ m; Bokhopo bo boholo bo ka holisoa ho fihlela makhetlo a 3.1 pele a thunya.

Lintho tse susumetsang tsa ho ba makukuno ha leino ka mor'a ho phunya

E ka bonoa ho tloha molao-motheo oa ho thunngoa peening hore boima bo phahameng le lebelo le phahameng le tsamaeang ka lebelo le siea likoti tse se nang palo karolong e ka holimo, e leng mohloli oa khatello ea kelello e setseng. Ka nako e ts'oanang, likoti tsena li tlamehile ho eketsa bokaholimo ba bokaholimo. Litšobotsi tsa likarolo pele ho thunngoa peening le ho thunngoa peening tshebetso parameters tla ama roughness ka mor'a ho thunngoa peening, joalokaha ho thathamisitsoe ho Lethathamo la 6. Karolong ea 3 ea pampiri ena, tlas'a maemo a mane tshebetso, leino holim'a roughness ka mor'a thunngoa peening eketseha ho likhato tse fapaneng. Tekong ena, ho na le mefuta e 'meli e fapaneng, e leng, pre shot roughness and process parameters (saturation strength or coverage), e ke keng ea tseba hantle hore na kamano pakeng tsa post shot peening roughness le e mong le e mong le e mong tšusumetso. Hajoale, litsebi tse ngata li entse lipatlisiso mabapi le sena, 'me li fane ka mohlala oa ho bolela esale pele oa ho khopama ka holim'a metsi ka mor'a ho thunngoa ho ipapisitse le papiso e lekanyelitsoeng, e sebelisetsoang ho bolela esale pele boleng ba ho khopama ba mekhoa e fapaneng ea ho phunya.

Ho ipapisitsoe le boiphihlelo ba 'nete le lipatlisiso tsa litsebi tse ling, mekhoa ea tšusumetso ea lintlha tse fapaneng e ka nahanoa joalo ka ha e bonts'itsoe ho Lethathamo la 6. Ho ka bonoa hore ho khohlela ka mor'a ho thunya ho angoa ka botlalo ke lintlha tse ngata, tseo hape e leng lintlha tsa bohlokoa. e amang masala a kgatello ya maikutlo. E le ho fokotsa ho hlaba ka mor'a ho thunngoa ho pota-potiloe sebakeng sa ho netefatsa hore ho na le khatello ea kelello e setseng, ho hlokahala liteko tse ngata tsa ts'ebetso ho tsoela pele ho ntlafatsa motsoako oa parameter.

Tšusumetso ea leino holim'a leino holim'a ts'ebetso ea NVH ea tsamaiso

Likarolo tsa li-gear li tsamaisong ea phetisetso e matla, 'me ho hlaka ha leino ho tla ama ts'ebetso ea bona ea NVH. Liphetho tsa liteko li bontša hore tlas'a mojaro le lebelo le le leng, ho ba le boima bo bongata holim'a metsi, ho na le ho thothomela le lerata le leholo la tsamaiso; Ha mojaro le lebelo li eketseha, ho thothomela le lerata li eketseha ka ho hlaka.

Lilemong tsa morao tjena, merero ea ho fokotsa matla a macha e eketsehile ka potlako, 'me e bontša mokhoa oa tsoelo-pele oa lebelo le leholo le torque e kholo. Hona joale, torque e kholo ea ho fokotsa matla a rona a macha ke 354N · m, 'me lebelo le leholo ke 16000r / min, le tla eketsoa ho feta 20000r / min nakong e tlang. Tlas'a maemo a joalo a ts'ebetso, tšusumetso ea ho eketseha ha leino holim'a leino holim'a ts'ebetso ea NVH ea tsamaiso e tlameha ho nkoa.

Mehato ea ho ntlafatsa boemo ba leino ka mor'a ho phunya

The thunngoa peening tshebetso ka mor'a hore gear sila ka ntlafatsa ho kopana mokhathala matla a leino Gear leino le ho kobeha mokhathala matla a motso leino. Haeba ts'ebetso ena e tlameha ho sebelisoa ka lebaka la mabaka a matla a ts'ebetso ea moralo oa lisebelisoa, e le ho nahana ka ts'ebetso ea NVH ea sistimi, ho thatafala ha leino la leino ka mor'a ho thunya ho ka ntlafatsoa ho tsoa ho lintlha tse latelang:

a. Optimize the shot peening process parameters, and control the amplification of tooth surface roughness ka mor'a ho thunngoa peening ka lebaka la ho etsa bonnete ba masala compressive khatello ea kelello. Sena se hloka liteko tse ngata tsa ts'ebetso, 'me mokhoa oa ho feto-fetoha ha maemo ha o matla.

b. The composite thunngoa peening tshebetso e amohetsweng, ke hore, ka mor'a hore matla a tloaelehileng a thunya peening e phethiloe, thunya e 'ngoe peening e phaella ka ho re. Matla a ntseng a eketseha a ho phunya a atisa ho fokola. Mofuta le boholo ba lisebelisoa tsa ho thunya li ka fetoloa, joalo ka sethunya sa ceramic, sethunya sa khalase kapa terata ea tšepe e sehiloeng ka boholo bo nyane.

c. Ka mor'a ho phunya, mekhoa e kang ho belisoa ha leino le ho roala mahala hoa eketsoa.

A pampiri ena, leino holim roughness tsa maemo a fapaneng thunngoa peening tshebetso le likarolo tse fapaneng pele le ka mor'a ho thunngoa peening e ithutoang, 'me liqeto tse latelang li huleloa thehiloeng lingoliloeng:

◆ Shot peening tla eketsa leino holim roughness, e leng angoa ke litšobotsi tsa likarolo pele ho thunngoa peening, thunngoa peening tshebetso meedi le lintlha tse ling, 'me lintlha tsena e boetse e le lintlha tse ka sehloohong tse amang masala compressive khatello ea kelello;

◆ Tlas'a maemo a teng a tlhahiso ea betch, boholo ba leino holim'a mafika ka mor'a ho thunngoa peening ke makhetlo a 3.1 hore pele ho thunngoa peening;

◆ Ho eketseha ha leino holim'a leino ho tla eketsa ho thothomela le lerata la tsamaiso. Ha torque le lebelo le leholo, ho totobetse ho eketseha ha ho thothomela le lerata;

◆ The leino holim roughness ka mor'a ho thunngoa peening ka ntlafatsoa ke optimizing thunngoa peening tshebetso meedi, motsoako thunngoa peening, phaella ka ho bentsa kapa mahala honing ka mor'a ho thunngoa peening, joalo-joalo The optimization ea sethunya peening tshebetso meedi e lebeletsoe ho laola roughness amplification ho hoo e ka bang 1.5 linako tse ling.