Weld matakin madaidaiciyar bututun karfe (lsaw/erw):

Sakamakon tasirin walda na halin yanzu da tasirin nauyi, walda na ciki na bututu zai fito, kuma walda ta waje kuma za ta ragu.Idan ana amfani da waɗannan matsalolin a cikin mahalli na ƙasa mara ƙarfi, ba za a shafe su ba.

Idan aka yi amfani da shi a cikin matsanancin zafin jiki, matsa lamba da yanayin ruwa mai sauri, zai haifar da matsalolin amfani.Dole ne a kawar da wannan lahani ta amfani da kayan aikin daidaita walda.

Ka'idar aiki na kayan haɓaka kabu na walda shine: mandrel mai diamita na 0.20mm ƙarami fiye da diamita na ciki na bututu an saita shi a cikin bututun welded, kuma an haɗa mandrel da silinda ta igiya ta waya.Ta hanyar aikin silinda na iska, za'a iya motsa mandrel a cikin ƙayyadaddun yanki.A cikin tsayin mandrel, ana amfani da saitin juzu'i na sama da na ƙasa don mirgina walda a cikin motsi mai jujjuyawa daidai da matsayin walda.A ƙarƙashin matsi na mirgina na mandrel da nadi, an kawar da haɓakawa da baƙin ciki, kuma an canza yanayin walda da kwandon bututu cikin sauƙi.A daidai lokacin da maganin daidaita walda, za a danne ƙwaƙƙarfan tsarin hatsin da ke cikin walda, sannan kuma zai taka rawa wajen haɓaka girman tsarin walda da haɓaka ƙarfi.

Gabatarwar matakin walda:

A lokacin aikin lankwasawa na tsiri na karfe, aiki mai ƙarfi zai faru, wanda ba shi da amfani ga bayan sarrafa bututun, musamman lanƙwasa bututu.
A lokacin aikin walda, za a samar da wani tsari mai tsauri a wurin walda, kuma za a sami damuwa ta walda a cikin walda, musamman ma a alakar walda da karfen gindi..Ana buƙatar kayan aikin maganin zafi don kawar da ƙarfin aiki da kuma tsaftace tsarin hatsi.
A halin yanzu, tsarin kula da zafi da aka saba amfani da shi shine magani mai haske a cikin yanayin kariyar hydrogen, kuma bututun bakin karfe yana mai zafi sama da 1050°.
Bayan wani lokaci na adana zafi, tsarin na ciki ya canza don samar da tsari na austenite daidai, wanda ba ya oxidize a ƙarƙashin kariyar yanayin hydrogen.
Kayan aikin da aka yi amfani da shi shine kayan aiki mai haske na kan layi (annealing).An haɗa kayan aiki tare da naúrar ƙira mai lankwasawa, kuma bututun welded yana ƙarƙashin jiyya mai haske akan layi a lokaci guda.Kayan aikin dumama suna ɗaukar matsakaicin mitar ko babban ƙarfin wutar lantarki don saurin dumama.
Gabatar da tsabtataccen hydrogen ko hydrogen-nitrogen yanayi don kariya.Ana sarrafa taurin bututun da aka yi amfani da shi a 180 ± 20HV, wanda zai iya biyan buƙatun bayan sarrafawa da amfani.