Ukugquma nge-vacuum kunokuvumela ukudityaniswa kwezinto kusetyenziswa into yokuzalisa engadingi flux eyahlukileyo ukuze kuthintelwe ii-oxides. Ukugcina i-vacuum kuyo yonke i-braze kwenza uninzi lomsebenzi wokugcina i-oksijini ingangeni kwinkqubo. Oku kubalulekile kubathengi abaneendawo ezithile apho naziphi na iikhemikhali okanye iintsimbi ezinokufakwa kwi-flux zinokubangela ukungcola okungafunekiyo kwi-bond yokugqibela. Oku kubangela ukuba iindawo zicoceke kakhulu.
Ngenxa yokuba izithando zomoya zenziwe ngokulawula ubushushu, iingcali zesinyithi ziyazi ukuba isithando somoya sinokufudumala izinto zokugquma kunye namacandelo ekufuneka adityaniswe ngokuchanekileyo, ngokufanayo, kunye nokuphindaphinda. Amacandelo anobunzima bokwakha afuna ukudityaniswa kwiindawo ezinzima ukufikelela kuzo, okanye iindibano ezininzi ezinamalungu adibeneyo kulula ukuwagquma kwindawo yesithando somoya.
Ukugquma nge-vacuum kukwabalasele xa iindawo ezimbini ezineenxalenye ezibhityileyo okanye ezibhityileyo kufuneka zidityaniswe nolwakhiwo oluthile. Iindawo ezincinci zixhomekeke kulawulo lobushushu oluchanekileyo ukuze zingagobi, ngelixa iindawo ezinkulu ezinobuxhakaxhaka zinokuthembela ekubekweni kweliso kwe-thermocouple ukuqinisekisa ixesha elifanelekileyo lokuntywila, zifudumeze inxalenye ngokulinganayo.
Umoya kunye nolawulo lobushushu olufumaneka kwisithando somoya esingenamthungo luvumela ubushushu obuhambelanayo kwiindawo ezineendawo ezintsonkothileyo. Ngokufudumeza nokucima iindawo ngesantya esiqikelelweyo, isithando somoya esingenamthungo sibonelela ngolawulo olukhethekileyo ekuguquleni i-alloy yebrazing ibe lulwelo kubushushu obungayi kuguqula okanye buphazamise iindawo eziza kuhlanganiswa.
Enye inzuzo ebalulekileyo yokusebenzisa isisombululo se-vacuum brazing kukukwazi ukulawula imveliso yenkqubo. Iinkqubo ze-vacuum furnace zakhiwe ukulawula nokucubungula umsi womoya ngcono kune-salt bath efanayo okanye isisombululo somoya, kwaye azifuni iikhemikhali eziqatha okanye iityuwa ezinyibilikisiweyo eziya kufuneka zigcinwe ngononophelo kwaye zilahlwe. Iiresiphi ze-vacuum brazing ezicocekileyo azidingi ukucoca iindawo ezongezelelweyo emva kokucubungula, nto leyo ekwanciphisa inkunkuma yeekhemikhali.
