Kwimibhobho yegesi yendalo yomgama omde, ukusebenzisa insimbi yombhobho womgangatho ophezulu yeyona ndlela iphambili yokugcina iindleko.Inkqubo yoshishino lwemibhobho yaseKhanada ibonise ukuba: xa kuthelekiswa ne-X60, ukwamkelwa kobukhulu bodonga lombhobho we-X70 kunokucuthwa nge-14%;Ukuwelda lelinye lamakhonkco abalulekileyo ekwenziweni kwemibhobho yentsimbi kunye nolwakhiwo lwemibhobho, ngenxa yokungalingani komjikelo we-welding we-thermal, indawo echaphazelekayo yobushushu bokuwelda (HAZ) yinxalenye ebuthathaka yombhobho.Isantya sokupholisa yeyona parameter iphambili ukumisela ukusebenza kombutho we-HAZ, inxulumene negalelo lobushushu be-welding, ubukhulu bomsebenzi kunye nemeko yemitha ejikelezileyo.Ke ngoko, ukwenza inkqubo ye-welding efanelekileyo, ukulawula isantya sokupholisa kwe-welding kunokufumana ukusebenza kombutho ogqwesileyo we-HAZ, kuthintelwe iintanda ze-HAZ, ukuze kuqinisekiswe ukusebenza kokhuseleko lombhobho.

Ngokunyuka kwezinga lokupholisa, i-microstructure ye-X80 yombhobho wentsimbi ye-HAZ inikwe kuqala kunye ne-polygonal ferrite, ukunika kuqala nge-B okanye ingqolowa ye-lath martensite, ukuqina kuya kwanda.Xa igalelo lobushushu be-welding lilikhulu kakhulu okanye ubushushu bokufudumala buphezulu kakhulu kwaye isantya sokupholisa singaphantsi kwe-2℃/ s, X80 umbhobho wentsimbi HAZ umbutho inikwa ngqangi kunye okanye B polygon ferrite iinkozo, kodwa ngenxa yobukho pearlite kunye MA siqithi unikezelo block block, ekhokelela ekusebenzeni crystal erhabaxa impembelelo ihlwempuzekileyo.Xa igalelo lobushushu be-welding lincinci kakhulu okanye ubushushu bokufudumala buphantsi kakhulu kwaye isantya sokupholisa singaphezulu kwama-30.℃/ s, umbutho we-X80 wentsimbi yentsimbi ye-HAZ unikwa kuqala nge-BF okanye i-lamellar martensite, okukhokelela ekunciphiseni kokusebenza kwempembelelo yekristale erhabaxa.Ukwenza inkqubo ye-welding efanelekileyo, ukulawula izinga lokupholisa ngaphakathi kobubanzi be-2 ~ 30℃/ s, i-X80 yombhobho wentsimbi ye-HAZ umbutho unikwa kuqala kwi-B, iqela lesiqithi se-MA lithe saa, indawo yengqolowa erhabaxa inobulukhuni obufanelekileyo kunye nokusebenza okugqwesileyo kwempembelelo.