I-Cast Aluminium-Silicon Alloy Radiator/Exchanger ye-Natural Gas Bured Boiler
Isingeniso Esibalulekile
I-high-silicon aluminium alloy iyingxubevange kanambambili eyakhiwe nge-silicon ne-aluminium, futhi iyimpahla yokuphatha okushisayo esekwe ensimbi. I-high-silicon aluminium alloy material ingagcina izakhiwo ezinhle kakhulu ze-silicon ne-aluminium, ayingcolisi imvelo, futhi ayinangozi emzimbeni womuntu. Ukuminyana kwe-high-silicon aluminium alloy kuphakathi kuka-2.4~2.7 g/cm³, futhi i-coefficient of thermal expansion (CTE) iphakathi kuka-7-20ppm/℃. Ukwandisa okuqukethwe kwe-silicon kunganciphisa kakhulu ukuminyana kanye ne-thermal coefficient yokunwetshwa kwento yealloy. Ngasikhathi sinye, ingxubevange ye-aluminium ephezulu ye-silicon nayo inokuguquguquka okuhle kokushisayo, ukuqina okuqondile okukhethekile kanye nokuqina, ukusebenza kahle kokucwenga ngegolide, isiliva, ithusi, ne-nickel, okushiselwa nge-substrate, kanye nokwenza lula ukunemba kwemishini. Kuyimpahla yokupakishwa ye-elekthronikhi enamathemba okusebenza abanzi.
Izindlela zokukhiqiza ze-high-silicon aluminium alloy composite materials ikakhulukazi zihlanganisa lokhu okulandelayo: 1) ukuncibilikisa nokuphonsa; 2) indlela yokungena; 3) i-powder metallurgy; 4) vacuum hot ngokucindezela indlela; 5) indlela yokupholisa ngokushesha/yokufafaza.
Inqubo Yokukhiqiza
1) Indlela yokuncibilika nokuphonsa
Imishini yokuncibilikisa kanye nendlela yokuphonsa ilula, ibiza kancane, futhi ingakwazi ukubona ukukhiqizwa kwezimboni ezinkulu, futhi iyindlela ebanzi kakhulu yokulungiselela izinto ze-alloy.
2) Indlela ye-impregnation
Indlela yokufakelwa ihlanganisa izindlela ezimbili: indlela yokungena ngomfutho kanye nendlela yokungena engenasici. Indlela yokungenisa ingcindezi isebenzisa ukucindezela komshini noma ukucindezela kwegesi okucindezelwe ukwenza isisekelo sensimbi sincibilike singene esikhaleni sokuqinisa.
3) I-powder metallurgy
I-powder metallurgy iwukuhlakaza ingxenye ethile yempushana ye-aluminium, impushana ye-silicon ne-binder ngokufana, uhlanganise futhi ulolonge izimpushana ngokucindezela okomile, umjovo nezinye izindlela, futhi ekugcineni usike endaweni evikelayo ukuze kwakheke into ecinene.
4) Vacuum indlela yokucindezela okushisayo
Indlela yokucindezela i-vacuum hot ibhekisela kwinqubo ye-sintering lapho ukwakhiwa kwengcindezi kanye nokucindezela i-pressing kwenziwa ngesikhathi esisodwa. Izinzuzo zayo yilezi: ①Impushana igeleza kalula ngokwepulasitiki futhi iminyene; ②Izinga lokushisa le-sintering nesikhathi se-sintering sifushane; ③Ukuminyana kuphezulu. Inqubo evamile yilezi: ngaphansi kwezimo ze-vacuum, i-powder ifakwe emgodini wesikhunta, i-powder iyashiswa ngenkathi icindezelwa, futhi i-compact kanye ne-uniform material yenziwa ngemva kwesikhashana sokucindezela.
5) Ukupholisa ngokushesha/ukufafaza ukubeka
Ukupholisa okusheshayo/ubuchwepheshe bokufaka isifutho ubuchwepheshe bokuqiniswa okusheshayo. Inezinzuzo ezilandelayo: 1) akukho ukuhlukaniswa okukhulu; 2) inhle futhi iyunifomu equiaxed crystal microstructure; 3) isigaba sokuqala semvula esihle; 4) okuqukethwe okuphansi kwe-oxygen; 5) ngcono ukusebenza kokucubungula okushisayo.
Ukwahlukanisa
(1) Ingxubevange ye-silicon ye-Hypoeutectic iqukethe i-silicon engu-9% -12%.
(2) I-Eutectic silicon aluminium alloy iqukethe i-silicon engu-11% kuya ku-13%.
(3) Okuqukethwe kwe-silicon ye-hypereutectic aluminium alloy kungaphezu kuka-12%, ikakhulukazi ku-15% kuya ku-20%.
(4) Labo abanokuqukethwe kwe-silicon okungama-22% noma ngaphezulu babizwa ngokuthi ama-alloys e-silicon ephezulu, lapho i-25% -70% iyinhloko, futhi okuqukethwe kwe-silicon ephakeme kakhulu emhlabeni kungafinyelela ku-80%.
Isicelo
I-1) Ukupakishwa kwesifunda okuhlanganisiwe kwamandla aphezulu: i-alloy aluminium alloy ephezulu ihlinzeka ngokukhipha ukushisa okuphumelelayo;
I-2) Isithwali: Ingasetshenziswa njengesizinda sokushisa sendawo ukwenza izingxenye zihlelwe ngokuseduze;
I-3) Uhlaka lwe-Optical: i-silicon ephezulu ye-aluminium alloy inikeza i-coefficient ephansi yokwandisa okushisayo, ukuqina okuphezulu nokusebenza;
4) I-Heat sink: I-silicon aluminium alloy ephezulu inikeza ukuchithwa okusebenzayo kokushisa nokusekelwa kwesakhiwo.
5) Izingxenye ze-Auto: I-high-silicon aluminium alloy material (okuqukethwe kwe-silicon 20% -35%) inezici ezinhle kakhulu ze-tribological, futhi ingasetshenziswa njengento ethuthukisiwe engagqoki engagqoki ukuze isetshenziswe kumathuluzi ahlukahlukene okuthutha, imishini ehlukahlukene yamandla, nomshini. amathuluzi. , Izinsimbi ezikhethekile namathuluzi asetshenziswe kabanzi.
I-high-silicon aluminium alloy inochungechunge lwezinzuzo ezifana namandla adonsela phansi amancane, isisindo esilula, ukuhamba kahle kwe-thermal, i-coefficient ephansi yokwanda kwe-thermal, ukuqina kwevolumu, ukumelana nokugqokwa okuhle, ukumelana nokugqwala okuhle, futhi isetshenziswa kabanzi njengama-cylinder liners, ama-piston, kanye nama-rotor wezinjini zezimoto. , Ama-Brake discs nezinye izinto.
