Mokhoa oa ho Khetholla o Potlakileng oa Boleng ba Nodular Cast Iron Spheroidizing

Nako ea ho Hatisa: 06 / 28 2021 Mongoli: Mohlophisi oa Setsi Etela: 11420

Tlhahlobo pele ho sebopi

Tlhahlobo pele ho sebōpi sa tšepe ea ductile ke karolo ea bohlokoa ea ts'ebetso ea tlhahiso, 'me e amana ka kotloloho le boleng ba likarolo tsa tšepe tsa ductile. Spheroidization ea tšepe e qhibilihisitsoeng e ka ahloloa ka nako e nepahetseng le ka nepo, mme mehato e ka nkuoa kapele ho laola boleng ba tšepe ea nodular cast. Qeto e fosahetseng e ka pela sebopi e tla etsa hore palo e kholo ea batho ba lahloang e hlakoloe ebe e senya nako ea motho. Ka hona, kahlolo e nakong le e nepahetseng ea spheroidization ka pela sebopi e bohlokoa haholo ho feta tlhahlobo ka mora sebopi. Ho na le mekhoa e 'maloa e atisang ho sebelisoa tlhahisong ea' nete ho lekola spheroidization ea tšepe e qhibilihisitsoeng pele ho sebopi.

1 Mokokotlo o kaholimo le mokhoa oa kahlolo oa lelakabe

Sesebelisoa sa lefatše sa magnesium nodular cast se na le lintlha tse tlase tsa magnesium le likarolo tse sa tloaelehang tsa lefats'e. Bokaholimo ba tšepe e entsoeng ka ho qhibilihisoa bo fapane le tšepe e hloekileng ea magnesium nodular. Ha ho na sekalo sa oxide e ngata hakalo, mme lelakabe ha le matla haholo ebile ha le matla. Leha ho le joalo, ha 1/3 ea tšepe e entsoeng ka ho qhibilihisoa e eketsoa, khanya ea magnesium le lelakabe le lesoeu li tla baleha bokaholimo ba metsi, bo ts'oanang le kerese. Ho latela palo le bophahamo ba lelakabe, ho ahloloa boemo ba spheroidization le palo e setseng ea magnesium. Ha lelakabe le phahama le ho ba matla ho feta, le supa hore spheroidization e ntle. Haholo-holo ha e tšeloa, tšepe e chesang e ka bonoa phallong ea tšepe e qhibilihisitsoeng, haeba bophahamo bo fihla ho 25 ~ ffice: smarttags "/> 50mm, spheroidization e ntle; haeba lelakabe le ka tlase ho 15mm, spheroidization e fosahetse. Holim'a tšepe e qhibilihisitsoeng e entsoeng ka tšepe e qhibilihisitsoeng, ho thehoa filimi ea oxide 'me ho na le matheba a bosoeu bo bosoeu bo bosoasoi, ho bolelang hore spheroidization e ntle. tshepe e tlase.

2 Tsela ea thibelo ea likhutlo li tharo

Hajoale, ke mokhoa o sebelisoang haholo ho ahlola spheroidization ka ho sheba block block. Liboloko tsa liteko tse sebelisoang ke lifeme tse fapaneng li na le libopeho tse fapaneng le boholo bo fapaneng, mme lifeme tse ngata li sebelisa li-block tse tharo tsa liteko. Ho latela litšobotsi tsa tlhahiso ea fektheri ea rona, boholo le botenya ba li-castings, boholo ba sebaka sa sefapano sa teko ea likhutlo li tharo ke 12.5mm (tlase) × 50mm ((bophahamo). Lifeme tse ling li sebelisa li-block test, joalo ka Iron15mm, Ф25mm, Ф30mm Tšepe. Kamora 'kalafo ea mokelikeli e phethetsoe, sebelisa khaba ea mohlala ho tšolla mokelikeli ka holim'a tšepe e entsoeng ka ho qhibilihisoa ka 200mm kaholimo ho metsi ebe o a tšela ka har'a teko ebe oa a pholisa hore a be mafubelu a lefifi pele metsi a tima. Selikalikoe sa kantle sa bolo e ntle haholo ho feta tšepe e bosoeu.Ponahalo e hloekile, e khanyang ebile e lehlabathe haholo. Kamora ho phola le ho kokota, spheroidization e ntle, 'me e entsoe ka letsopa le lesoeu-tšoeu kapa le boputsoa. Ntlha e hlakile' me molomo o mosoeu o bulehile bohareng. moemeli wil k hlahisa carbides ho feta. Ka nako ena, ha "block" ea "test" e kentsoe, e tla etsa molumo oa "ho phaphatha". Sekhechana sa liteko se tla robeha ha se kengoe habobebe 'me khalbide ea khalsiamo e sa tsoa khuoa e tla ba le molomo o motenya haholo. Ka hona, monko o molemo ho phaphamala ka silicon nakong ea tšollo. Haeba molomo o na le boputsoa bo boputsoa 'me ho na le matheba a manyane a masoeu, e na le kristale e' mala haeba e robehile.

Hlokomela:

1) Sekhahla sa liteko tse tharo tse tharo se tla ba le monko oa calcium carbide hang kamora ho sitisoa ke ho tima.
2) Botebo ba molomo o mosoeu bo amana le mofuta le mofuta oa tšepe ea ductile le sebopeho sa tšepe e qhibilihisitsoeng. Ka hona, ha ho na data e fanoang tafoleng. Botebo ba molomo o mosoeu oa iron e sa tloaelehang ea magnesium ductile ha e totobetse haholo.

3 Kahlolo ea ts'ebetso ea ho tšolla

(1) Ka mor'a hore tšepe e qhibilihisitsoeng ea ductile e tšeloe ka hlobo, haeba senoelo sa sprue se koaletsoe tlase mme bokaholimo bo boreleli haholo, ho bonts'a hore spheroidization e ntle; haeba karolo e kaholimo ea senoelo sa sprue e na le khetla e thata, le eona e tla phomoloa. Mocheso oa tšepe o qhibilihisitsoeng o tlase.
(2) Nakong ea tšollo, ho na le likoti (likoting) lenaneng tse chitja tse fafalitsoeng ka holim'a hlobo ea lehlabathe, ho bonts'a hore botle ba spheroidization bo nepahetse.

4 Mokhoa o khethollang oa bohale

Kamora hore bolo e sebetswe, sebelisa khaba ea sampole ho tšela leqhubu la liteko ka botenya ba hoo e ka bang 10mm, ebe oe pholile hore e be khubelu e lefifi. Kamora ho tima le ho robeha, haeba bohale bo botšo bo fumanoa holim 'a teko, ho bolela hore spheroidization ha e ntle,' me motenya o motenya o motšo, bolo Ho mpefala le ho feta ke ho putlama hoa moruo. Nakong ena, haeba mocheso oa tšepe e qhibilihisitsoeng o phahame, motsoako o ka eketsoa. Ho ka bonoa hape ho tsoa lekaleng la liteko hore haeba pherekano ea "block block" e entsoe ka arc e nang le khatello ea maikutlo bohareng, 'me ho na le makhopho a mang, e bonts'a hape hore spheroidization e ntle; haeba ho na le matheba a letlalo a kang koro ka holim'a bokaholimo ba teko, e bonts'a tšepe e qhibilihisitsoeng e nang le oxidized mme e bonolo ho bola. Tabeng ena, sebōpi se lokela ho fetoloa.

5 Shebella boemo ba ho tiea ha tšepe e qhibilihisitsoeng

Kamora hore spheroidization e phetheloe, ntša tšepe e nyane e nyane ebe o e tšela ka mold30mm ea tšepe ea cylindrical. Sheba ponahalo ea tšepe e qhibilihisitsoeng holimo ha u tiisa, 'me u ahlole spheroidization ea tšepe e qhibilihisitsoeng ho latela palo ea tšepe e qhibilihisitsoeng. Tšepe e ntle e entsoeng ka tšepe e qhibilihisitsoeng e bonts'a lebotho le leholo la katoloso ea graphite nakong ea ho tiea. Bokaholimo ba tšepe e qhibilihisitsoeng bo theoha hanyane qalong ea ho tiea, mme palo e nyane ea tšepe e qhibilihisitsoeng e tsoa kantle ho nyeoe kamora hore bokahare bo koaheloe; ha ts'epe e qhibilihisitsoeng e sa sebetseng hantle ea palo e phatloha holimo e nyane.

6 Tebello e potlakileng ea tšepe ea tšepe ka pel'a sebōpi

Mekhoa e boletsoeng kaholimo kaofela e sebelisa litšobotsi tse itseng tsa tšepe ea ductile ho ahlola ka mokhoa o sa tobang spheroidization, empa maemo a fapaneng tlhahisong a fapana haholo, 'me mekhoa e hlalositsoeng e na le meeli, mme ho shebella ka lebelo la tšepe ka pela sebopi ho ka qoba lintlha tse ngata. Ho itšunya-tšunya, shebisisa ka kotloloho boemo ba spheroidization.

Tlhahlobo ea Metallographic kamora sebopi

(1) Tlhahlobo ea post-metallographic haholo-holo e shebile sebopeho sa microstructure se kang graphite morphology le li-inclusions tse entsoeng ka tšepe ea tšepe. Ka tlhahlobo ea metallographic, palo ea likarolo tse robehileng e ka sebelisoa e le motheo oa ho ntlafatsa boleng ba ho betsa.
(2) Ts'ebetso ea lik'hemik'hale ea lefatše le sa tloaelehang la magnesium spheroidal graphite cast iron le eona e ka boleloa e le mokhoa oa ho tseba. Haeba bothata bo fumanoa, basebetsi ba batching ba ka etsa liphetoho tse loketseng ho qoba mathata a maholo a boleng. Ntle le moo, ho na le liteko tsa thepa ea mochini le liteko tse sa senyeheng tsa likarolo tsa tšepe tsa ductile.

fihlela qeto e

Bakeng sa tlhahlobo ea tšepe ea ductile, mokhoa oa setso oa tlhahlobo ea "tlhahlobo ea kamora sebopi" o lokela ho fetoloa hore e be "tlhahlobo ea inthanete ea nako ea nnete." E le khoebo e kholo le e mahareng, ts'ebeliso ea mekhoa e tsoetseng pele ea tlhahlobo lapeng le kantle ho naha ho netefatsa boemo ba spheroidization ke tiiso e tšepahalang ea ntlafatso ea boleng ba ho lahla. Leha ho le joalo, bakeng sa likhoebo tse nyane, haholoholo likhoebo tsa literopo tse hlahang ka potlako, ho ntse ho le bohlokoa ho sebelisa tšobotsi e itseng ea tšepe ea ductile ho ahlola ka mokhoa o sa tobang spheroidization.

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