Pipe ea tšepe e bobebe ea khabone ke e 'ngoe ea lipeipi tse belisang tse sebelisoang mochining oa motlakase oa boiler.Bongata ba li-tubes tsena li sebetsa tlas'a mocheso o phahameng le khatello, ka hona, ho na le litlhoko tse itseng ho thepa ea mechine ea phala e bonolo ea carbon steel, ts'ebetso ea welding le ts'ebetso ea mokhatlo, ho phaella ho hlokehang ho ba le mocheso o motle oa kamore le thepa e phahameng ea mocheso, li-tubes tsena. e hloka ho sebetsa ka mokhoa o batang haholo, ka hona, litlhoko tsa li-tubes tsena li tlameha ho ba le ductility e phahameng le boima.Lenaneo la ho sebetsa ka serame le bohlokoa bakeng sa ts'ebetso ea ho kenya lipeipi tsa boiler, empa ts'ebetsong e batang ea ho khumama, ho thatafala ha mosebetsi ho tla boela ho be le moko.Cold-bopehileng kakaretso, ho na le litsela tse peli, e 'ngoe ha e batang-bōptjoa pele preheating a batang ithorisa preheating.Preheated hangata lirumula ho baka, preheat mocheso empirically ke opareitara ho tšoara, 'me ka mor'a ho kobeha ka bobeli batang,' me ha ho tshebetso mocheso kalafo.Ka hona, ho phonyoha ha serame ho bata hangata ho tlisa liphetoho tsa thepa ea mochini le liphetoho ts'ebetsong ea mekhatlo, e ileng ea theha phala e ka bang teng ea leseli ts'ebetsong ea inshorense ea ho ba e 'ngoe ea mabaka a ho hloleha.Hoa tsebahala, ho khumama ka mokhoa o batang ka mor'a ho thatafala ho baka matla a tube ea tšepe le ho eketseha ha boima, ductility le toughness e fokotsehile, lebaka ke kristale e robehileng le haufi le sefofane se matla sa torsional SUI sa koporo, se eketsa ho hanyetsa ho thella kahoo tsoela pele ho ho thella ho thata ho phethahatsoa.Ho feta moo, ka ho eketseha ha tekanyo ea deformation, mosebetsi o thatafatsa tshebetso moriri khauta eketseha.

Bakeng sa phala e bonolo ea carbon steel, ts'ebetso e batang (ho kenyeletsoa le serame pele ho futhumala) e tla ba le tšusumetso e kholo mokhatlong oa liphaephe tsa tšepe, e tla lebisa ka ho toba ho hloleha ho hoholo ha fracture.Ka hona, mokhatlo o tlameha ho ba li-countermeasures tse entsoeng ka tšepe tse batang tse entsoeng ka tšepe bakeng sa tse nyane.

Ho hlaolela ho futhumatsa ho loketseng

Ho latela litšepe tse fapaneng karabo le mocheso oa recrystallization, ho sebetsa mocheso o nepahetseng oa preheat le lits'ebetso tsa ts'ebetso, 'me u se ke ua futhumatsa ka bofofu, ho se fete sebaka sa phetoho ea Ac], ho futhumala ho ka thibela ho putlama ha sekhutlo kapa ho theoa ha micro. -mapetsong.Leha ho le joalo, lintlha li bontša hore tšepe e tlaase ea carbon ka 300. C hoo e ka bang ha ho tla ba le "blue brittle" ho e-na le ho thatafala ha polasetiki ho fokotseha.Ka hona, e le hore ho be bonolo haholoanyane ho mohato oa deformation, mocheso oa preheating ho 400 ~ 500. C ea monko o loketse haholoanyane.Ka nako e ts'oanang, ela hloko lieta, thaole, lebelo le batang haholo la ho koba deformation;kapele haholo.Ntlafatsa lebelo la sebopeho sa lehlabula, mocheso o phahameng oa "Blue marrow".

Kalafo ea ho futhumatsa ka mor'a ho koba letlooa

Recrystallization annealing, le ho felisoa ha thepa ea mechine ka lebaka la ho thatafatsa mosebetsi oa liphetoho ho ea ka litlhaloso tse fapaneng le maemo a sebetsang a workpiece a tlameha ho etsoa ka workpiece ka mor'a ho sebetsa ka serame.640 e sebelisoa bakeng sa phala ea tšepe bakeng sa 20 # annealing, e ka ba pholiso e ntle ea khatello ea maikutlo le ho hlaphoheloa ha thepa ea mochini.Empa hoa lokela ho hlokomeloa hore, ts'ebetsong e latelang ea ho pholile, hoa hlokahala ho fokotsa ho pholile, - joalo ka sekhahla sa ho pholile ha se khone ho feta 6 ho isa ho 8. C / pula.

Ka bokhutšoanyane, peipi ea tšepe ea carbon e bonolo ha e ntse e kobeha (ho kenyeletsoa ho futhumala), phello e kholo mosebetsing oa mokhatlo e ka ba phala ea tšepe, e leng sephetho se tobileng sa ho hlōleha ho tebileng ho robeha.Preheat batang thehoa carbon tšepe phala e lokela ho ba ka thata-thata ho ya ka tshebetso ya ho bolaoa, ka mor'a hore batang-ea theoang lokela ho qoba line annealing mocheso kalafo.