Kufa uchikanda simbi zvigadzirwa kugadzirisa

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Tsananguro Pfupi:

Kufa kukanda inzira yekukanda simbi, inozivikanwa nekushandisa iyo yemukati mhango yefa kuti ishandise kumanikidza kwesimbi yakanyungudutswa. Ma Molds anowanzo gadzirwa neakakwira alloys esimbi, ayo akafanana neakaumbwa jekiseni. Vazhinji vanofa vanokandirwa havana simbi, senge zinc, mhangura, aluminium, magnesium, lead, tin uye lead tin alloys uye alloys avo. Zvichienderana mhando achifa Kudzingwa, zvinokosha kushandisa chando mukamuri kufa vachikanda muchina kana inopisa mukamuri kufa vachikanda muchina. T ...

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Chigadzirwa Chigadzirwa

Chigadzirwa Mateki

Chii chinonzi Kufa?

Mutengo wekukanda michina uye kuumbwa kwakakwirira, saka iyo yekufa-kukanda maitiro inowanzo shandiswa chete kugadzirwa kwemazhinji nhamba yezvigadzirwa. Izvo zviri nyore kugadzira zvikamu zvekufa-zvekukanda, izvo zvinongoda matanho mana chete akakosha, uye iyo imwechete yemutengo yekuwedzera yakaderera kwazvo. Kufa kukanda kunonyanya kukodzera kugadzira huwandu hwakawanda hwevadiki uye vepakati-saizi castings, saka kufa kurasa ndiyo inonyanya kushandiswa mune dzakasiyana kurasa maitiro. Zvichienzaniswa nezvimwe Kudzingwa ruzivo, pemvura kufa vachikanda iri anotsvedzerera uye ane yepamusoro ndeiya yakaita kusachinja-chinja.

Kubva pane yechinyakare kufa vachikanda maitiro, akati wandei akavandudzwa maitiro akazvarwa, kusanganisira asiri porous kufa vachikanda maitiro ekuderedza kukanda kuremara uye kubvisa pores. Iyo yakananga jekiseni maitiro anonyanya kushandiswa kugadzirisa zinc, ayo anogona kudzikisira marara uye kuwedzera goho.

Zvinhu Of Die vachikanda:

Iyo simbi inoshandiswa kufa ichikanda kunyanya inosanganisira zinc, mhangura, aluminium, magnesium, lead, tin uye lead tin alloys. Kunyangwe yakadzvanywa simbi isingawanzoitika, zvinoita zvakare. Special kufa kukanda simbi kunosanganisira Zamak, aluminium zinc chiwanikwa uye American Aluminium Association zviyero: aa380, aa384, aa386, aa390 uye AZ91D magnesium. Hunhu hwekufa kwekukanda simbi dzakasiyana siyana zvinotevera:

Zinc: simbi iri nyore kufa-ichikanda. Zviri mari chaizvo kugadzira zvidimbu zvidiki, nyore kupfeka, yakakwira compressive simba uye mapurasitiki, uye hupenyu hwakareba kukanda.

Aluminium: kurema kurema, kwakaoma kugadzira uye matete-ane masvingo castings ane epamusorosoro kudzikama, akasimba ngura kuramba, zvakanaka zvemuchina zvivakwa, yakanyanya kupisa kupisa uye conductivity, uye yakakwira simba pakakwirira tembiricha.

Magnesium: iri nyore kumuchina, yakasimba simba kuhuremu reshiyo, yakareruka pane inowanzo shandiswa kufa-kukanda simbi.

Mhangura: ine yakasimba kuomarara uye yakasimba ngura kuramba. Pakati pezvinhu zvinowanzo shandiswa kufa-kukanda simbi, ine yakanakisa michina zvivakwa, pfeka kuramba uye simba padhuze neiyo yesimbi.

Lead uye gaba: mukuru arambe achirema, mukuru ndeiya yakaita kunyatsoita, inogona kushandiswa seanokosha anti-ngura zvikamu. Nezvikonzero zvehutano zveveruzhinji, iyi alloy haigone kushandiswa sekugadzira chikafu uye michina yekuchengetedza. Iyo alloy yemutobvu, tini uye antimoni (dzimwe nguva ine kabhuru kadiki) inogona kushandiswa kugadzira chinyorwa mhando uye bronzing mutsamba yekudhinda.