Tšusumetso ea Litšila Mehahong ea Ts'epe

Nako ea ho Hatisa: 06 / 27 2021 Mongoli: Mohlophisi oa Setsi Etela: 11835

Ntle le lisebelisoa tsa tšepe, khabone le alloy, litšila tse ling (joalo ka mankanese, silicone, sebabole, phosphorus, litšila tse seng tsa tšepe le likhase tse ling, joalo ka naetrojene, haedrojene, oksijene, jj.) Li tla tlisoa tšepe nakong ea ts'ebetso ea ho qhibilihisa. Litšila tsena li na le tšusumetso e kholo boleng ba tšepe.

Ha manganese e le litšila ka tšepe, hangata e ka tlase ho 0.8%. E tsoa ho tšepe ea kolobe le deoxidizer ferromanganese e le lisebelisoa tse tala bakeng sa ho etsa tšepe. Manganese e na le bokhoni bo botle ba ho qhekella 'me e ka theha MNS ka sebabole ho felisa litlamorao tse mpe tsa sebabole. Boholo ba lihlahisoa tsena tsa karabelo li kenella ka har'a slag ebe lia tlosoa, 'me karolo e nyane e lula ka hara ts'epe ebe e fetoha inclusions e seng ea tšepe. Ho phaella moo, mankanese a ka qhibiliha ka ferrite ka mocheso oa kamore, e nang le phello e itseng ea ho matlafatsa tšepe. Manganese e ka qhibiliha ka cementite ho theha alloy cementite. Leha ho le joalo, ha manganese e le teng ka mokhoa o sa hloekang, phello ea eona ho thepa ea tšepe ha e bohlokoa.
Ha silicon e le litšila ka tšepe, hangata e ka tlase ho 0.4%. E boetse e tsoa ho tšepe ea kolobe le deoxidizer. Mocheso oa kamore, silicone e ka qhibiliha ka ferrite mme e na le phello e itseng e matlafatsang tšepe. Leha ho le joalo, ha silicon e le teng ka mokhoa o sa hloekang, phello ea eona ho litšobotsi tsa tšepe ha e bohlokoa.
Sebabole ke ho se hloeke ho tlisoang ka tšepe ka tšepe ea kolobe le mafura. Boemong bo tiileng, ho qhibiliha ha sebabole ka tšepe ho nyane haholo, empa ho teng ka sebopeho sa FES ka tšepe. Ka lebaka la polasetiki e fokolang ea FES, tšepe e nang le sebabole se ngata e bobebe. Ho feta moo, FES le Fe li ka theha eutectic e nang le ntlha e qhibilihang e tlase (985 ℃) ebe li aba moeling oa lijo-thollo oa austenite. Ha tšepe e futhumetse hoo e ka bang 1200 ℃ bakeng sa khatello e chesang, eutectic moeling oa lijo-thollo e qhibilihile mme tlamahano lipakeng tsa lithollo e senyehile, e leng se etsang hore tšepe e petsohe moeling oa lijo-thollo nakong ea ts'ebetso. Ketsahalo ena e bitsoa brittleness e chesang. Bakeng sa ho felisa litlamorao tse mpe tsa sebabole, manganese ka tšepe e tlameha ho eketsoa. Manganese le sebabole ka mokhoa o ikhethileng li theha manganese sulfide e nang le ntlha e phahameng e qhibilihisang (1620 ℃) ebe e ajoa ka lithollo ka sebopeho sa granular. E na le thepa e itseng ea ho bōpa ka mocheso o phahameng, ka hona e qoba ho phatloha ho futhumetseng. Sulfide ke mofuta oa kenyelletso eo e seng ea tšepe, e ka fokotsang likarolo tsa mochini oa tšepe ebe ea theha sebopeho se chesang sa fiber nakong ea ho qhekella. Ka hona, sebabole hangata ke ho se hloeke ho kotsi. Likahare tsa sebabole ka tšepe li lokela ho fokotsoa ka thata. Empa tšepe e nang le sebabole se ngata e ka theha MNS e ngata. Nakong ea ho itšeha, MNS e ka bapala karolo ea ho roba chip le ho ntlafatsa ts'ebetso ea tšepe, e leng lehlakore le letle la sebabole.
Phosphorus e etsoa ka tšepe ka tšepe ea kolobe. Ka kakaretso, phosphorus eohle ka tšepe e ka qhibiliha ka ferrite. Phosphorus e na le tharollo e matla ea tharollo, e eketsang matla le thatafalo ea tšepe, empa e fokotsa polasetiki le thata haholo. Kamohelo ena e tebile haholo mochesong o tlase, ka hona e bitsoa embrittlement e batang. Ka kakaretso, ho lebelletsoe hore mocheso oa phetoho oa ho kenella ho batang o tlase ho feta mocheso o sebetsang oa sethala sa mosebetsi ho qoba ho kenella ho batang. Nakong ea ts'ebetso ea crystallization ea phosphorus, ho bonolo ho hlahisa khethollo ea intragranular, e etsang hore phosphorus e be libakeng tse ling tse holimo, e leng se fellang ka keketseho ea mocheso o batang oa phetoho o batang, o hlahisang serame. Cold embrittlement e kotsi ho likarolo tsa sebopeho tse sebetsang sebakeng se batang se batang le maemo a mang a tlase a mocheso. Ntle le moo, khethollo ea phosphorus e boetse e etsa hore sebopeho sa tšepe se be le sebopeho kamora ho chesa ho chesang. Ka hona, ka kakaretso, phosphorus le eona ke litšila tse kotsi. Likahare tsa phosphorus ka tšepe le tsona li lokela ho laoloa ka thata. Leha ho le joalo, ha phosphorus e phahame, brittleness ea shell ea tšepe e phahame, ka hona ho molemo ho etsa tšepe ea khetla le ho ntlafatsa ts'ebetso ea tšepe.
Li-inclusions tsa tšepe ha li ntse li etsa tšepe, lihlahisoa tse nyane tsa slag, tse hanyetsang le tse arabelang li ka kena ka tšepe ea mokelikeli ebe li theha li-inclusions tse seng tsa tšepe. Mohlala, li-oxide, li-sulfide, li-silicates, li-nitride, jj. Li tla fokotsa likarolo tsa mochini oa ts'epe, haholo polasetiki, boima le moeli oa mokhathala. Ha e tebile, e tla etsa hore tšepe e petsohe nakong ea kalafo e chesang ea ts'ebetso le mocheso kapa ho robeha hampe ka tšohanyetso. Li-inclusions tseo e seng tsa tšepe li boetse li khothaletsa ho theoa ha sebopeho se chesang sa fiber le sebopeho se tlamiloeng, se etsang hore thepa e be anisotropic. Maemong a boima, polasetiki e parolang ke halofo feela ea longitudinal, 'me boima ba tšusumetso bo fokotsehile haholo. Ka hona, palo, sebopeho, boholo le kabo ea li-inclusions tseo e seng tsa tšepe li lokela ho hlahlojoa bakeng sa tšepe ea bohlokoa (joalo ka tšepe e sarolohang, tšepe ea selemo, jj.). Ntle le moo, nakong eohle ea ho qhibilihisa tšepe, tšepe e hokahana le moea, ka hona likhase tse ling tse kang naetrojene, oksijene le haedrojene li lula li monya tšepe. Li boetse li na le phello e mpe boleng ba tšepe.

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Lahla Liindasteri Liphuputso tsa likarolo tsa likarolo tsa: Likoloi, libaesekele, lifofane, liletsa tsa 'mino, sesepa sa metsi, lisebelisoa tsa Optical, li-sensor, mehlala, lisebelisoa tsa elektroniki, masaka, lioache, mechini, lienjine, thepa ea ka tlung, mabenyane, mabenyane, telecom, mabone, lisebelisoa tsa bongaka, lisebelisoa tsa litšoantšo, Liroboto, Litšoantšo tse betliloeng, Lisebelisoa tsa molumo, Lisebelisoa tsa lipapali, Lithulusi, Lipapali le tse ling.