Ndi wamba kuti mipope zitsulo mpweya welded ndi thovu mpweya mu kuwotcherera, makamaka lalikulu m'mimba mwake mpweya osasunthika zitsulo chitoliro kuwotcherera pores osati kumakhudza zothina wa payipi kuwotcherera ndi chifukwa kutayikira payipi, komanso kukhala malo opangira dzimbiri, amene amachepetsa kwambiri mphamvu ndi kulimba kwa weld..Zinthu zomwe zimayambitsa porosity mu weld ndi: chinyezi, dothi, oxide sikelo ndi chitsulo filings mu flux, kuwotcherera zigawo zikuluzikulu ndi makulidwe chophimba, pamwamba khalidwe la mbale zitsulo ndi mankhwala a zitsulo mbale mbali mbale, kuwotcherera ndondomeko ndi zitsulo chitoliro. kupanga ndondomeko, etc. Flux kapangidwe.Pamene kuwotcherera kuli ndi kuchuluka koyenera kwa CaF2 ndi SiO2, kumachita ndi kuyamwa kuchuluka kwa H2, ndikupanga HF yokhala ndi bata lalikulu komanso yosasungunuka muzitsulo zamadzimadzi, zomwe zingalepheretse kupanga ma pores a haidrojeni.

Mavuvu nthawi zambiri amapezeka pakatikati pa mkanda wowotcherera.Chifukwa chachikulu ndi chakuti haidrojeni ikadali yobisika mkati mwa chitsulo chowotcherera mu mawonekedwe a thovu.Choncho, muyeso wothetsera vutoli ndikuchotsa dzimbiri, mafuta, chinyezi ndi chinyezi kuchokera ku waya wowotcherera ndi weld.ndi zinthu zina, kutsatiridwa ndi flux ayenera bwino zouma kuchotsa chinyezi.Kuonjezera apo, ndizothandizanso kuonjezera zamakono, kuchepetsa liwiro la kuwotcherera, ndi kuchepetsa kulimba kwachitsulo chosungunuka.

Kuchuluka kwa makulidwe a flux nthawi zambiri ndi 25-45mm.Kuchuluka kwa tinthu ting'onoting'ono kwa kusinthasintha ndi kachulukidwe kakang'ono kumatengedwa ngati mtengo wapamwamba, mwinamwake mtengo wochepa umagwiritsidwa ntchito;Kuthamanga kwakukulu kwamakono ndi kutsika kwa kuwotcherera kumagwiritsidwa ntchito pa makulidwe a kudzikundikira, ndipo mtengo wocheperako umagwiritsidwa ntchito mosiyana.Chinyezi chikakhala chambiri, madzi otuluka ayenera kuumitsidwa musanagwiritse ntchito.Kuphulika kwa sulfure (ming'alu ya sulfure).Ming'alu chifukwa sulfides mu gulu sulfure tsankho kulowa zitsulo weld pamene kuwotcherera mbale ndi magulu amphamvu sulfure tsankho (makamaka zitsulo zofewa otentha).Chifukwa cha ichi ndi kukhalapo kwa haidrojeni mu chitsulo sulfide ndi chitsulo chokhala ndi malo otsika osungunuka m'dera la sulfure.Choncho, pofuna kuti izi zisachitike, ndizothandizanso kugwiritsa ntchito zitsulo zophatikizika kapena zitsulo zophedwa ndi magulu olekanitsa ochepa a sulfure.