Flash butt welding ke mokhoa o sebelisoang haholo indastering ea tlhahiso le ea kaho bakeng sa ho kopanya litšepe. E kenyelletsa tšebeliso ea matla a holimo le khatello ho theha maqhama a matla, a tšoarellang pakeng tsa likotoana tse peli tsa tšepe. Karolo e 'ngoe ea bohlokoa ea ts'ebetso ea ho cheselletsa flash butt ke preheating, e bapalang karolo ea bohlokoa ho fihlelleng li-welds tse atlehileng. Sehloohong sena, re tla hlahloba bohlokoa ba preheating le liphello tsa eona ho boleng le botšepehi ba flash butt welds.
Preheating ke mokhoa oa ho phahamisa mocheso oa lisebelisoa tse lokelang ho chesetsoa pele ho ts'ebetso ea sebele ea welding. Hangata e etsoa ka ho futhumatsa ka induction, malakabe a khase, kapa mekhoa ea ho futhumatsa e hanyetsang. Sepheo sa mantlha sa ho futhumatsa ha flash butt welding ke ho fokotsa khatello ea mocheso le phapang ea mocheso e ka bang teng nakong ea ts'ebetso ea welding.
- Phokotso ea Khatello ea Khatello: Preheating e thusa ho fokotsa khatello ea ka hare ea thepa e cheselitsoeng. Ha litšepe li futhumatsoa ka potlako nakong ea ho cheselletsa, lia atoloha, ’me ha li pholile, lia honyela. Katoloso ena e potlakileng le ho honyela ho ka fella ka khatello e setseng ka har'a lenonyeletso le cheselitsoeng. Preheating e lumella ho fetoha ha mocheso butle-butle, ho fokotsa kotsi ea ho senya le ho sotha likotoana tse cheselitsoeng.
- Phallo e Ntlafetseng ea Boitsebiso: Nakong ea ho tjheseletsa ha flash butt, lisebelisoa li tlas'a khatello e matla le ea morao-rao, e leng se etsang hore li fetohe habonolo. Preheating e nolofatsa thepa, e etsa hore e be ductile le ho khothalletsa phallo e ntle ea thepa. Phallo ena e ntlafetseng ea thepa e tiisa hore litšepe li kopana hantle, ho theha maqhama a matla le a ka tšeptjoang.
- Ho Fokotsa ho thatafala le ho Brittleness: Ho pholisa ka potlako ka mor'a ho cheselletsa ho ka lebisa ho thehoeng ha li-microstructures tse thata le tse brittle ka har'a motsoako o entsoeng ka marang-rang. Preheating e liehisa ts'ebetso ea ho pholisa, e lumellang hore ho thehoe li-microstructures tse bonolo le tse ngata tsa ductile. Sena, ka lehlakoreng le leng, se ntlafatsa ho tiea ka kakaretso le ductility ea weld, ho fokotsa kotsi ea ho phatloha le ho hlōleha.
- Corrosion Resistance: Preheating le eona e ka ba le phello e ntle ho khanyeng ea kutu ea lenonyeletso le cheselitsoeng. Ka ho khothaletsa sebopeho sa weld e ts'oanang le e fokolang haholo, ho futhumatsa ho thusa ho fokotsa ts'oaetso ea lenonyeletso ho kutu le mefuta e meng ea ho senyeha ha thepa.
Qetellong, preheating ke mohato oa bohlokoa oa ho cheselletsa flash butt, kaha o kenya letsoho ho boleng ba kakaretso le bots'epehi ba weld. Ka ho fokotsa khatello ea maikutlo ka hare, ho ntlafatsa phallo ea thepa, ho fokotsa ho thatafala le brittleness, le ho matlafatsa ho hanyetsa ha kutu, ho futhumatsa pele ho tiisa hore motsoako o entsoeng ka welded o finyella litekanyetso tse hlokahalang tsa ts'ebetso le ho tšoarella. Li-welders le bahlahisi ba lokela ho nahana ka hloko ka li-preheating parameters ho finyella katleho ea flash butt welds lits'ebetsong tse fapaneng.
Nako ea poso: Oct-27-2023
