Ho phatloha ha weld ke eng?Ke bothata bo boholo bo atileng haholo ho li-welds.Tlas'a ketso e kopanetsoeng ea khatello ea kelello ea tjheseletsa le lintlha tse ling tsa brittleness, matla a tlamahano a liathomo tsa tšepe sebakeng sa sebaka sa marang-rang a marang-rang a senyeha 'me ho thehoa sebopeho se secha.Theknoloji ea welding, re lokela ho qoba mapetsong a tjheseletsa.
Mapheo a chesang a mapetsong a tjheseletsa:
Lithako tse chesang li hlahisoa tlas'a mocheso o phahameng, ho tloha mocheso oa ho tiisa ho ea mocheso o ka holimo ho A3, kahoo li bitsoa mapheo a chesang, ao hape a bitsoang likhahla tse phahameng tsa mocheso.Joang ho thibela mapetsong a chesang?Kaha moloko oa mapetsong a chesang o amana le lintlha tsa khatello ea kelello, mekhoa ea thibelo e boetse e lokela ho qala ho tloha likarolong tse peli tsa khetho ea thepa le ts'ebetso ea welding.
Mapetsong a batang a mapetsong a tjheseletsa:
Mapetsong a batang a hlahisoa nakong kapa ka mor'a ho tjheseletsa, ka mocheso o tlase, ho potoloha mocheso oa phetoho ea martensite (ke hore Ms point) ea tšepe, kapa ka mocheso o ka tlase ho 300 ~ 200 ℃ (kapa T ＜ 0.5Tm, Tm ke mocheso oa ntlha ea ho qhibiliha e hlahisoa ka mocheso o phethahetseng), kahoo ba bitsoa mapetsong a batang.
Khutlisa mapetsong a mapetsong a tjheseletsa:
Reheat cracks e bua ka manonyeletso a cheselitsoeng a litšepe tse matla a phahameng a alloy a tlase le litšepe tse thibelang mocheso tse nang le vanadium, chromium, molybdenum, boron le likarolo tse ling tsa alloy.Nakong ea ts'ebetso ea ho futhumatsa (joalo ka ho fokotsa khatello ea maikutlo, ho tjheseletsa ha li-multi-layer le multipass welding, le mosebetsi oa mocheso o phahameng), mapetsong a hlahang sebakeng se mahoashe sa lijo-thollo tsa sebaka se anngoeng ke mocheso 'me a peperana moeling oa lijo-thollo oa austenite a boetse a bitsoa khatello ea maikutlo. liphallelo annealing cracks (SR cracks).
Ho na le mabaka a mangata a ho cheselletsa mapetsong, empa ho sa tsotellehe hore na lebaka ke lefe, hafeela mekhoa ea thibelo e ntse e sebetsa hantle, likotsi tsa mapetsong nakong ea welding li ka fokotseha haholo.
Nako ea poso: Sep-20-2022