Silicon Bakeng sa Metal Casting

Metal casting ke mokhoa oa khale oo esale e le oa bohlokoa tsoelopeleng ea batho ka lilemo tse makholo. Ho tloha ho ho etsa liemahale tse rarahaneng ho isa ho ho etsa likarolo tse rarahaneng tsa indasteri, ho etsa litšepe ho phetha karolo ea bohlokoa liindastering tse fapaneng.Silicone, ntho e atisang ho amahanngoa le theknoloji e tsoetseng pele, ke e 'ngoe ea lintho tse molemo ka ho fetisisa ho batho. Hangata e sebelisoa ho etsa aluminium-lisebelisoa tsa siliconleferrosilicon(iron-silicon) alloys, e boetse e na le tšusumetso e kholo ts'ebetsong ea tšepe ea tšepe. China, Russia, Norway le Brazil ke tsona tse hlahisang liminerale tse kholo ka ho fetisisa tsa silicon. Sehloohong sena, re tla kenella ka botebo ts'ebelisong ea silicon ho lahla tšepe, ho lekola thepa ea eona, lits'ebetso, le mekhoa eo e ntlafatsang ts'ebetso ea ho lahla.

Ho utloisisa Silicon ka Metal Casting

Silicon ke ntho e feto-fetohang e sebelisoang haholo ho lahla tšepe ka lebaka la thepa ea eona e ikhethang. Ha e kopantsoe ka tšepe e kang aluminium, koporo le tšepe, silicon e matlafatsa matla, ho thatafala le ho hanyetsa ho bola ha motsoako o hlahisoang. Lintho tsena tse ntlafalitsoeng tsa mochini li etsa hore li-alloys tsa silicon e be tsa bohlokoa haholo liindastering moo ho tšoarellang le ho sebetsa ho leng bohlokoa.

Hobaneng ha Silicon e Lokela ho Etsa Metal Casting

Sebaka se Phahameng sa Melting: Silicon e na le ntlha e phahameng ea ho qhibiliha, e etsang hore e tšoanelehe bakeng sa lisebelisoa tse phahameng tsa mocheso tse kang ho lahlela tšepe.
Katoloso e Tlaase ea Mocheso: Silicon e na le thepa e tlaase ea ho atolosa mocheso, e thusang ho fokotsa kotsi ea khatello ea mocheso nakong ea ho lahla.
Mokelikeli o motle: Silicon e ntlafatsa mokelikeli oa tšepe e qhibilihisitsoeng, e e lumellang hore e phalle habonolo ka har'a hlobo e rarahaneng le mekoting.
Matla a matlafalitsoeng: Silicon e eketsa matla le ho thatafala ha li-alloys tsa tšepe, e etsa hore e be tse loketseng bakeng sa lits'ebetso tse hlokang thepa e phahameng ea mochini.

Lisebelisoa tsa Silicon ka Metal Casting

1. Aluminium Casting: Silicon e atisa ho sebelisoa ho lahla aluminium ho ntlafatsa thepa ea mochine oa motsoako. Li-alloys tsa aluminium-silicon li bobebe 'me li na le khanyetso e ntle ea kutu, e li etsa tse loketseng bakeng sa lisebelisoa tsa sefofane le likoloi.

2. Tšepe ea ho Lahlela: Ka tšepe e entsoeng ka tšepe, silicon e eketsoa ka tšepe e bohlooho ho khothalletsa ho thehoa ha li-graphite flakes, tse matlafatsang lisebelisoa tsa machina le ho senya thepa. Silicon e boetse e ntlafatsa ho hanyetsa ha li-ferroalloys.

3. Thepa tšepe: Silicon e sebelisoa ka tšepe e entsoeng ka tšepe ho tlosa oxidize tšepe e qhibilihisitsoeng le ho ntlafatsa metsi a eona. Silicon e boetse e thusa ho laola boholo ba lijo-thollo tsa tšepe, e fellang ka li-castings tse matla, tse tenyetsehang haholoanyane.

Karolo ea Silicon ho Ntlafatsa Mokhoa oa ho Lahlela

Mokelikeli o ntlafetseng: Silicon e ntlafatsa mokelikeli oa tšepe e qhibilihisitsoeng, e e lumellang hore e tlatse habonolo likoti tse rarahaneng tsa hlobo. Thepa ena e bohlokoa bakeng sa ho fihlela li-castings tse rarahaneng le tse qaqileng.

Shrinkage e fokotsehileng: Ho eketsa silicon ho li-alloys tsa tšepe ho thusa ho fokotsa mefokolo ea shrinkage ho li-castings, ho netefatsa ho nepahala ha dimensional le ho fokotsa tlhokahalo ea machining e eketsehileng.

Matla a Matlafatsoa: Machinability ke ho bonolo ho sebetsa. Thepa ena e bohlokoa haholo lits'ebetsong tse hlokang mochini oa post-casting.

Mathata le Litlhaloso

Le ha silicon e fana ka melemo e mengata ea ho akhela tšepe, ho boetse ho na le mathata a mang a lokelang ho nahanoa:

1. Brittleness: Ho ba le silicon e phahameng haholo ho ka baka alloy brittleness, e ka senyang thepa ea eona ea mechine. Moralo o nepahetseng oa alloy le taolo ea litaba tsa silicon li bohlokoa ho thibela bothata bona.

2. Porosity: Haeba e sa laoloe hantle, silicon e ka eketsa kotsi ea porosity ho li-castings. Mechine e hlokolosi le mehato e tiileng ea taolo ea boleng e tlameha ho nkuoa ho fokotsa porosity.

3. Litšenyehelo: Silicon ke ntho e batlang e theko e boima e amang litšenyehelo tse akaretsang tsa ho hlahisa li-alloys tse nang le silicon. Tlhahlobo ea litšenyehelo tsa melemo e bohlokoa ho fumana monyetla oa ho sebelisa silicon ts'ebetsong e itseng ea ho lahla.