High-carbon steel e bua ka carbon steel e nang le w(C) e phahameng ho feta 0.6%, e nang le tšekamelo e kholo ea ho thatafala ho feta tšepe ea carbon-medium, mme e etsa martensite e phahameng ea carbon, e nang le kutloelo-bohloko ho thehoa ha mapetsong a batang.Ka nako e ts'oanang, mohaho oa martensite o entsoeng sebakeng se amehileng ke mocheso oa welding o thata ebile o brittle, e leng se lebisang ho fokotseha ho hoholo ha polasetiki le ho tiea ha motsoako.Ka hona, ho cheseha ha tšepe ea carbon e phahameng ho fokola haholo, 'me ho tlameha ho amoheloe mokhoa o khethehileng oa ho cheselletsa ho netefatsa ts'ebetso ea lenonyeletso..Ka hona, hangata ha e sebelisoe ka sewelo meahong e tjheseditsweng.High carbon steel e sebelisoa haholo-holo bakeng sa likarolo tsa mochine tse hlokang boima bo phahameng le ho hanyetsa ho roala, tse kang li-shafts, likere tse kholo le li-couplings.E le ho boloka tšepe le ho nolofatsa theknoloji ea ho sebetsa, likarolo tsena tsa mochine hangata li kopantsoe le mehaho e cheselitsoeng.Welding ea likarolo tse phahameng tsa carbon steel e boetse e kopana le mohaho o boima oa mochine.Ha ho etsoa ts'ebetso ea ho tjheseletsa ha tšepe e phahameng ea carbon steel weldment, mefuta eohle ea liphoso tse ka hlahang li lokela ho hlahlobisisoa ka botlalo, 'me ho nkoe mehato e tsamaellanang ea tjheseletsa.
1. Weldability ea tšepe e phahameng ea carbon
1.1 Mokhoa oa ho cheselletsa
Tšepe e phahameng ea carbon e sebelisoa haholo-holo meahong e nang le boima bo phahameng le khanyetso e phahameng ea ho apara, kahoo mekhoa e meholo ea ho tjheseletsa ke electrode arc welding, brazing le submerged arc welding.
1.2 Lisebelisoa tsa ho cheselletsa
Welding ea tšepe e phahameng ea carbon hangata ha e hloke matla a tšoanang pakeng tsa lenonyeletso le tšepe ea motheo.Li-electrode tse tlase tsa haedrojene tse nang le bokhoni bo matla ba desulfurization, litekanyo tse tlase tsa haedrojene tse sarolohang tsa tšepe e kentsoeng, le ho tiea ho hotle hangata li khethoa bakeng sa welding ea li-electrode arc.Ha ho hlokahala matla a tšepe ea weld le tšepe ea motheo, electrode e tlaase ea hydrogen ea boemo bo lekanang e lokela ho khethoa;ha matla a tšepe ea weld le tšepe ea motheo e sa hlokehe, electrode e tlaase ea hydrogen e nang le matla a tlaase ho feta ea tšepe ea motheo e lokela ho khethoa.Electrode e nang le matla a phahameng ho feta tšepe ea motheo e ke ke ea khethoa.Haeba tšepe ea motheo e sa lumelloe ho chesoa pele nakong ea ho tjheseletsa, e le ho thibela mapetsong a batang sebakeng se amehileng ke mocheso, li-electrode tsa tšepe tse sa hloekang tsa austenitic li ka sebelisoa ho fumana mohaho oa austenite o nang le polasetiki e ntle le ho hanyetsa ka matla.
1.3 Ho lokisetsa groove
E le ho fokotsa karolo e kholo ea khabone tšepeng ea weld, karolelano ea fusion e lokela ho fokotsoa, kahoo li-grooves tse bōpehileng joaloka U kapa V li sebelisoa ka kakaretso nakong ea ho cheselletsa, 'me ho lokela ho hlokomeloa ho hloekisa groove le matheba a oli. mafome ka hare ho 20mm mahlakoreng ka bobeli a groove.
1.4 Ho futhumatsa pele
Ha tjheseletsa ka li-electrode tsa tšepe tsa sebopeho, e tlameha ho futhumatsoa pele ho tjheseletsa, 'me mocheso oa preheating o lokela ho laoloa ho 250 ° C ho isa ho 350 ° C.
1.5 Ts'ebetso ea Interlayer
Bakeng sa li-welding tse ngata tse nang le mekhahlelo e mengata, phallo ea pele e sebelisa li-electrode tse nyenyane tsa bophara le li-welding tse tlaase.Ka kakaretso, workpiece e behoa ka seka-paa tjheseletsa kapa tjheseletsa molamu o sebelisoa ho sokela ka thōko, e le hore sebaka sohle se amehang mocheso oa tšepe ea motheo e futhumetse ka nako e khutšoanyane ho fumana liphello tsa ho futhumatsa le ho boloka mocheso.
1.6 Kalafo ea mocheso ka mor'a weld
Hang ka mor'a ho cheselletsa, workpiece e kenngoa ka sebōping sa ho futhumatsa, 'me ho boloka mocheso ho etsoa ho 650 ° C bakeng sa ho fokotsa khatello ea kelello.
2. Litšitiso tsa welding tsa tšepe e phahameng ea carbon le mehato ea thibelo
Ka lebaka la tšekamelo e phahameng ea ho thatafala ha tšepe e phahameng ea carbon, mapetsong a chesang le mapetsong a batang a atisa ho etsahala nakong ea ho cheselletsa.
2.1 Mehato e thibelang mapetsong a mocheso
1) Laola sebopeho sa lik'hemik'hale tsa weld, laola ka tieo litaba tsa sebabole le phosphorus, 'me ka nepo u eketse litaba tsa manganese ho ntlafatsa sebopeho sa weld le ho fokotsa karohano.
2) Laola sebopeho sa cross-sectional sa weld, 'me karo-karolelano ea bophara ho isa botebo e lokela ho ba kholoanyane ho qoba ho arohana bohareng ba weld.
3) Bakeng sa li-welds tse nang le boima bo phahameng, li-parameter tse loketseng tsa welding, tatellano e nepahetseng ea welding le tataiso li lokela ho khethoa.
4) Haeba ho hlokahala, nka mehato ea ho futhumatsa pele le ho lieha ho pholile ho thibela ho hlaha ha mapetsong a mocheso.
5) Eketsa alkalinity ea electrode kapa flux ho fokotsa ho se hloeke litaba tse ka hare ho weld le ho ntlafatsa tekanyo ea khethollo.
2.2 Mehato e thibelang mapetsong a batang.
1) Ho futhumatsa pele ho tjheseletsa le ho pholile butle ka mor'a ho cheselletsa ho ke ke ha fokotsa feela ho thatafala le brittleness ea sebaka se amehileng ke mocheso, empa hape ho potlakisa ho ata ha haedrojene ka ntle ho weld.
2) Khetha mehato e loketseng ea ho tjheseletsa.
3) Amohela tatellano e nepahetseng ea kopano le welding ho fokotsa khatello ea khatello ea manonyeletso le ho ntlafatsa boemo ba khatello ea maikutlo.
3 .Qetello
Ka lebaka la lik'habone tse phahameng, ho thatafala haholo le ho fokola ha tšepe ea tšepe e phahameng ea carbon, ho bonolo ho hlahisa sebopeho se phahameng sa carbon martensitic nakong ea ho tjheseletsa, 'me ho bonolo ho hlahisa mapetsong a ho cheselletsa.Ka hona, ha ho tjheseletsa tšepe e phahameng ea carbon, mokhoa oa ho tjheseletsa o lokela ho khethoa ka mokhoa o utloahalang.Le ho nka mehato e tsamaisanang ka nako ho fokotsa ho hlaha ha mapetsong a tjheseletsa le ho ntlafatsa ts'ebetso ea manonyeletso a cheselitsoeng.
Nako ea poso: Jul-18-2023