Kupenya kwechubhu yesimbi isina ngura mushure mekunamirwa kwesimbi kunosarudza kunaka kwepombi yesimbi. Pane zvinhu zvakawanda zvinokanganisa chiedza, asi zvikuru muzvinhu zvishanu zvinotevera,

1. Kana tembiricha inodiwa yasvika, tembiricha yekudziya. Kurapa nekupisa kwesimbi isina ngura kunowanzoitwa nekupisa, uye vanhu vanowanzo kudana kuti "annealing", tembiricha yacho inosvika 1050 ~ 1100 DEG C. Unogona kuona kuburikidza neburi rekuona rechoto chekudziya, nzvimbo yekudziya yechubhu yesimbi isina ngura inofanira kunge iri incandescent, asi hapana nzvimbo dzekunyorovesa.

2. Mhepo inonyungudutsa. Kazhinji inoshandisa hydrogen yakachena semhepo inonyungudutsa, mhepo ine kuchena kwakanyanya inodarika 99.99%, kana mhepo iri chimwe chikamu chegasi risina kunyungudutsa, kuchena kwayo kunogonawo kuderera zvishoma, asi haigone kuva neokisijeni yakawandisa, mhute yemvura.

3. Kuvhara muviri wefurnace. Furnace inopenya inofanira kuvharwa, yakaparadzaniswa nemhepo yekunze; uchishandisa hydrogen segasi rinodzivirira, nzira imwe chete yekubuda nayo yakabatana (inoshandiswa kubatidza hydrogen inobuda). Nzira yekuongorora inogona kushandiswa sipo yekupukuta mvura mufurnace inodziya yejoini rega rega, kuti uone kana gasi riri kumhanya; imwe yenzvimbo dziri nyore kushandisa gasi ndiyo chubhu inodziya uye chubhu inobuda ichipinda munzvimbo yemuno, rin'i inovhara nzvimbo iyi iri nyore kupfeka, inofanira kugara ichitarisa shanduko dzinowanzoitika.

4. Kudzivirirwa kwemhepo inoyerera negasi. Kuti pasabude kubuda kwemvura shoma, kudzivirirwa kwegasi kunofanira kuchengetedza kumanikidzwa kwakanaka, kana kudzivirirwa kwegasi rehydrogen, kunowanzo da kupfuura 20kBar.

5. Utsi hwemvura hwechoto. Kune rumwe rutivi, kutarisa kana muviri wechoto unoomesa, choto chekutanga chakaiswa, muviri wechoto unofanira kunge wakaoma; zviviri ndezvekuti mvura yakawandisa yasara muchoto chechubhu yesimbi isina ngura, kana paine maburi, kana kuti isina kudonhedza mvura, kana kuti mhepo yechoto yaparara zvachose.