Osewera zotayidwa-pakachitsulo aloyi rediyeta

Kufotokozera Kwachidule:


Mankhwala Mwatsatanetsatane

Zogulitsa

Kuyamba Kwazinthu

Mkulu-pakachitsulo zotayidwa aloyi ndi aloyi bayinare wopangidwa ndi pakachitsulo ndi zotayidwa, ndipo ndi chitsulo ofotokoza matenthedwe kasamalidwe zakuthupi. Chitsulo chosungunuka kwambiri cha silicon chimatha kukhala ndi zinthu zabwino kwambiri za silicon ndi aluminium, sichimaipitsa chilengedwe, komanso chopanda vuto m'thupi la munthu. Kachulukidwe ka aloyi wa-silicon aluminium wapakati pa 2.4 ~ 2.7 g / cm³, ndipo koyefishienti kakukula kwamatenthedwe (CTE) ili pakati pa 7-20ppm / ℃. Kuchulukitsa zinthu za silicon kumatha kuchepetsa kwambiri kuchuluka kwa zinthu zakuthupi ndi aloyi. Nthawi yomweyo, aloyi ya-silicon aluminiyamu amakhalanso ndi matenthedwe abwino, kuwuma kwakukulu ndi kukhazikika, magwiridwe antchito abwino ndi golide, siliva, mkuwa, ndi faifi tambala, yotheka ndi gawo lapansi, komanso makina osavuta. Ndizolemba zamagetsi zomwe zimakhala ndi chiyembekezo chogwiritsa ntchito.

Njira zopangira zida zapamwamba kwambiri za silicon aloyi zophatikizira zimaphatikizapo izi: 1) kuyungunuka ndi kuponyera; 2) njira yolowera; 3) zitsulo zamafuta; 4) zingalowe otentha kukanikiza njira; 5) njira yozizira / kutsitsi mwachangu.

Njira Yopangira

1) Njira yosungunuka ndi kuponyera

Zipangizo zamakina osungunulira ndi kuponyera ndizosavuta, zotsika mtengo, ndipo zimatha kuzindikira mafakitale akulu, ndipo ndiyo njira yokonzekera kwambiri yazinthu za aloyi.

2) Njira yoperekera

Njira yolembetsera imakhala ndi njira ziwiri: njira yolowerera yolowerera komanso njira yolowera mopanikizika. Njira yolowerera yolowerera imagwiritsa ntchito makina opanikizika kapena kupanikizika kwa gasi kuti chitsulo chosungunuka chisungunuke mumalowo.

3) Mafuta a ufa

Chitsulo cha ufa ndi kufalitsa gawo lina la ufa wa aluminiyamu, ufa wa silicon ndi binder chimodzimodzi, kusakaniza ndi kupanga ufa powakakamiza, jekeseni ndi njira zina, ndipo pomalizira pake sinter mumlengalenga kuti muteteze zinthu zowoneka bwino.

4) Muzikuntha mipando otentha kukanikiza njira

Njira yotsegulira yotentha yotsegulira imatanthawuza njira yojambulira momwe kupsinjika kwamphamvu kumapangidwira nthawi yomweyo. Ubwino wake ndi: TemperatureKutentha kwa sintering ndi nthawi yokometsa sachedwa; Kuchuluka kwake ndikokwera. Njirayi ndi: pansi pazinthu zopanda zingwe, ufa umayikidwa mchikombole, ufa umatenthedwa mukapanikizika, ndipo zinthu zophatikizika ndi yunifolomu zimapangidwa patangopita nthawi yochepa.

5) Kutentha kwachangu / kutsitsi

Kutentha kwakanthawi kofulumira / kutsitsi ndiukadaulo wofulumira. Ili ndi zabwino izi: 1) palibe kusiyanitsa kwakukulu; 2) chabwino ndi yunifolomu equiaxed galasi microstructure; 3) gawo loyamba la mpweya wabwino; 4) mpweya wotsika; 5) ntchito yabwino yothetsera matenthedwe.

Gulu

(1) Hypoeutectic silicon aloyi aloyi imakhala ndi 9% -12% silicon.

(2) Eutectic silicon aloyi aloyi ili ndi 11% mpaka 13% silicon.

(3) Ma silicon a hypereutectic aluminium alloy ali pamwamba pa 12%, makamaka pakati pa 15% mpaka 20%.

(4) Omwe ali ndi silicon ya 22% kapena kupitilira apo amatchedwa ma alloys apamwamba kwambiri a silicon, omwe 25% -70% ndi omwe ali opambana, ndipo zotengera za silicon kwambiri padziko lapansi zimatha kufikira 80%.

Kugwiritsa ntchito

1) Kuphatikizira kwamphamvu kwamphamvu kwamphamvu: ma silicon aloyi a aluminiyamu amapereka kutaya kwamphamvu kwa kutentha;

2) Chonyamulira: Chitha kugwiritsidwa ntchito ngati koziziritsira komweko kuti zinthu zizikonzedwa bwino;

3) Kuwala chimango: mkulu pakachitsulo zotayidwa aloyi amapereka otsika matenthedwe kuwonjezeka koyefishienti, mkulu chinthu chimodzimodzi ndi workability;

4) Kutentha koziziritsira: Mkulu pakachitsulo zotayidwa aloyi amapereka kutenthetsa kothandiza komanso kandalama.

5) Zida zamagalimoto: Zida zazitsulo zotsekemera kwambiri (silicon 20% -35%) ili ndi zida zabwino kwambiri, ndipo itha kugwiritsidwa ntchito ngati chopepuka chopepuka chosagwiritsidwa ntchito pazida zosiyanasiyana zoyendera, makina amagetsi osiyanasiyana, ndi makina zida. , Zomangira zapadera ndi zida zakhala zikugwiritsidwa ntchito kwambiri.

Mkulu-pakachitsulo zotayidwa aloyi ali ndi mndandanda wa zabwino monga yokoka yaing'ono yeniyeni, kulemera kuwala, chabwino matenthedwe madutsidwe, kutsika matenthedwe koyefishienti, bata buku, wabwino avale kukana, ndi kukana wabwino dzimbiri, ndipo chimagwiritsidwa ntchito monga zapamadzi yamphamvu, pisitoni, ndi makina ozungulira magalimoto. , Zimbale mabuleki ndi zipangizo zina.


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