INVESTMENT CASTING (LOST WAX CASTING) PROCESS
Iyo yekudyara yekukanda maitiro inzira ine hupfumi yekugadzira simbi dzesimbi ine yakanakisa dimensional kurongeka uye kupedzisa kwepamusoro, kudzikisa kana kutobvisa mamwe machining mashandiro.Ndiyo imwe yekare kare inozivikanwa foundry process.Uchapupu hwekuchera matongo munzvimbo dzakasiyana dzepasi hunoratidza kuti hurongwa hwekukanda mari hwakatanga muBronze Age, makore angangoita 4,000 BC.Iyo inzira yeindasitiri ine yakanatswa uye yakasimba kudzora masisitimu kune yega yega masere anotevera nhanho yekugadzira.
Danho rekutanga iri rine mukugadzirwa kwepateni inorasa kupisa yakagadzirwa nekubayiwa kwewakisi muforoma (metal die.)
Mapatani ewakisi anowanzo kuve nechimiro chakafanana chejeometrical seyakagadzirirwa chikamu chakakandwa.Majekiseni ewakisi anoita mamwe mabhura patani uye zvakakosha kuti abvise nemazvo.Kunyange zvimedu zvidiki zvinenge zvisingaoneki zvisiri zvechikamu chekupedzisira zvinobviswa mukuita uku.
Mushure mekubvisa, mapatani ewakisi ari, kuburikidza nekupisa, anounganidzwa pamumhanyi (alsowax-yakaiswa jekiseni yakagadzirwa) kuti igadzire muti wekukanda.
Zvikamu zvakatevedzana zveakakosha slurry ceramic refractory zvinhu zvinoshandiswa pamuti nekutonga kwakasimba kwekushisa uye humidity.
Kana chigadziko checeramic chagadzirwa uye chaomeswa, muti wose unoiswa mu autoclave system kuti ubvise wakisi yakawanda kuburikidza nemhepo inotsikirira kuitira kuti irambe ichingova magoko e ceramic.Nzvimbo dzese dzakambozadzwa newakisi, hadzina chinhu
Kuti uwane simba repamusoro remuchina uye kupisa kwekuvhunduka, goko rinoumba miti isina chinhu inoiswa muchoto mukupisa kwakanyanya kunosvika 1,100 C. (2,000 F).
Mushure mekuita calcination, iyo ceramic shell molds yakanyatsozadzwa nesimbi yemvura, iyo negiravhiti inoyerera ichipinda mukati memukati mold, ichigadzira rough workpieces, zvese zvakabatanidzwa kune sprue.
Iwo rough workpieces anobva agurwa kubva kune tiresi, anogamuchira chaiyo kupedzisa (kukuya, kutwasanudza, kupisa kurapwa, machining, engraving, nezvimwewo), uye, mushure meizvozvo, enda kune yakasimba yekupedzisira kuongororwa kwemhando usati warongedza uye kutumira kune costumer.
