Izixhobo Isixhobo samandla
Inkqubo yokunyibilikisa isinyithi yavela ngaphezulu kwe-3000 BC.Indlela yokuqala yokwenza isinyithi yayisisiseko se-metallurgy.
1) kuhlala kukho ii-pores kwimveliso;
2) ukomelela kweemveliso zepowder metallurgy eziqhelekileyo kungaphantsi kokuxolelwa okuhambelanayo okanye ukuphoswa (malunga ne-20% ~ 30% esezantsi);
3) Ngenxa yokuba fluidity yomgubo kwinkqubo yokwakha incinci kakhulu kunesinyithi esingamanzi, ulwakhiwo kunye nokuma kwemveliso kunqunyelwe kwinqanaba elithile;
4) uxinzelelo olufunekayo lokwenza luphezulu, ke iimveliso zinqunyelwe kwisikhundla sokucinezela;
I-5) iindleko eziphezulu zokucinezela ukufa, ngokubanzi kusebenza kuphela kwibhetshi okanye kwimveliso yobunzima.
Umgubo wentsimbi: umgangatho wemveliso yokugqibela kunzima ukuwulawula ngokukhululekileyo; Umgubo wentsimbi uyabiza; Umgubo awuthobeli umthetho we-hydraulics, ukuze ukuma kobume bemveliso kube nomda othile.
1) Umatshini wokucinezela: uhlala ufuna ukusebenzisa umatshini wokushicilela obizayo
2) Ukufa ngokucofa: iyimveliso enokusetyenziswa enexabiso eliphezulu
3) isithando somlilo
I-4) Umgubo kulula ukuwudibanisa, kwaye kuthatha ixesha elide ukudibanisa
5) Ubungakanani kunye nokumila kweemveliso kulinganiselwe.