Umgangatho wezinyo lebhakethi kunye nokuthengwa kwezinyo lebhakethi xa sithenga izinyo lebhakethi kunye namanye amalungu omatshini, ahlala ecinezeleka into, yindlela yokuthenga nokuthenga oko, thenga ukuba yintoni uphawu. yeyakho!
Imingxuma yomoya yafunyanwa ijikeleze indawo eshushu yesixhobo sezinyo esisikiweyo sebhakethi, kwaye imingxuma yomoya nayo yafunyanwa eludongeni kufutshane nomngxuma ongundoqo. inkqubo yokwenza i-shrinkage cavity kunye ne-porosity of casting, uninzi lwazo luhamba kunye nokuhlukana kwegesi.Ukuba isixa segesi kwi-alloy siphezulu kakhulu, okanye igesi eninzi ihlaselwe kwinkqubo yokuzaliswa kwesinyithi, ukubunjwa kwe-shrinkage ngasentla okanye Ngokusebenzisa uhlalutyo lokusika amazinyo ebhakethi, sinokubona ukuba ukusasazwa kwe-stomatal akunakwenzeka, kwaye umngxuma mkhulu, ubukhulu becala ungqukuva kunye nebhola engqukuva, unokugqiba ukuba esi sisu sise-invasive stomatal.
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Ixesha lokuposa: Sep-20-2019