Tšepe ea alloy e phahamengho nepahala phala e nyenyane ea tšepe e se nang moelihoo e ka bang ha e sebelise mokhoa o tobileng oa ho tima;Ha palo ea austenite e bolokiloeng e hlokoa ka thata, tšepe e tlaase ea alloy e ke ke ea tima ka ho toba.Bothata bo tloaelehileng ke ponahalo ea maqhubu holim'a aho nepahala phala e nyenyane ea tšepe e se nang moeli(joalo ka likere tsa spiral kapa hypoid) tlasa mojaro o sebetsang.
Bakeng sa ho fokotsa palo ea li-austenite tse bolokiloeng le deformation nakong ea ho tima ka kotloloho, ho pholile pele ho ka sebelisoa ho atamela mocheso oa Ar1 ka mor'a carburizing ebe o tima.Peipi ea tšepe e sa sebetseng hantle e nyane ea bophara e ka tingoa pele ha e fetisetsoa seboping se phahameng hanyane ho feta mocheso oa Ar1.Kamora ho kolobisoa le ho tima, phala e nyane ea tšepe e sa sebetseng hantle e ka futhumatsoa ka mocheso o kaholimo ho Ac1, ea tsoela pele ho hloekisa lijo-thollo le ho fokotsa bongata ba masala a austenite.
The ho nepahala tse nyenyane bopharaphala e batang e kentsoeng seamless tšepee tingoa ka ho toba ho fumana matla le boima bo phahameng ka ho fetisisa, empa boima ha bo phahame.Boima ba lera la carburized bo ka lekanyetsoa ka faele.The thatafatsa ka fokotswa ka lebaka la ho ba teng ha masala austenite ka ho nepahala e nyenyane seamless phala ea phahameng alloy tšepe.Mokhoa ona o ka boela oa fokotsa samente moeling oa lijo-thollo.Ha machining e holim'a carburized ea ho nepahala nyenyane caliberphala ea tšepe e se nang moroaloha ho hlokahala, ho pholile butle kapa ho khannoa ho tla amoheloa.
Haeba tšepe e nang le thata e phahameng e khethoa kapa e angoa ke lisebelisoa, le haeba pholiso e lieha, bokaholimo ba phala e nyane ea bophara bo khanyang bo ntse bo e-na le boima bo phahameng.Tabeng ena, ho nolofatsa kalafo ho lokela ho amoheloa.Ho qoba pula ea carbide ea marang-rang, sekhahla sa ho pholisa se mahareng se tlameha ho amoheloa.Nka mehato e meng ea ho itšireletsa ho thibela decarburization nakong ea ho pholile butle.Ka mor'a moo, ho tla sebelisoa tšepe e phehiloeng ka metsi.Ka mor'a carburizing, ho pholile butle kapa mokhoa oa ho tima oli o ka sebelisoa ho hloekisa lithollo bohareng ba phala e nyenyane ea tšepe e se nang seam ntle le ho senyeha ho tebileng kapa ho phunyeha.
Ts'ebetsong ea kalafo ea mocheso oa ho tima hangata ho futhumatsang, carburizing le pholileng e lateloang ke ho tima ho futhumatsa hape, ho tima holim'a metsi ho ka bonoa ka ho tima holim'a metsi, 'me mekhoa ena e ka sebelisoa hape.Bakeng sa ho nepahala ha liphaephe tse nyane tse seamless tse nang le alloy e phahameng, ho molemo ho sebelisa mokhoa o haufi le ho tima ka kotloloho, ke hore, ho futhumatsa ho 15 ~ 25 ℃ (25 ℃ ~ 50 ℃) ka holim'a mocheso o bohareng oa phetoho (ehlile, ka nqane ho sebaka sa phetolo ya bokahodimo).
Ts'ebetso ea kalafo ea mocheso e eketsa matla a mantlha a phala e nyane ea bophara bo nepahetseng, 'me e na le boima bo botle.Hoo e ka bang li-carbide tsohle tse setseng holim'a metsi lia qhibiliha.Leha litaba tse setseng tsa austenite tsa ts'ebetso e joalo ka nepo e nyane ka bophara bo batang, phala ea tšepe e sa koaeloang e le ka tlase ho ea ho tima ka kotloloho, e tla bolokoa ka mokhoa o itseng.The deformation e kholo ho feta ea ho tima ka ho toba, empa ka har'a sebaka se amohelehang.Joalo ka ho tima ka kotloloho, mokhoa ona ha o sebelisoe hangata bakeng sa tšepe e tloaelehileng ea carbon.
Ka mor'a ho pholile butle kapa ho tima, tšepe ea metsi e ka tsosolosoa ho mocheso oa phetoho ea mohato o phahameng hanyenyane ho feta oa lera la carburized.Ka mohlala, e nyenyane bophara motsoako motsoako precision seamless phala e ka reheated ka mor'a carburizing le butle tsidifatso, hobane e ke ke ho hloekisa lijo-thollo le quenching, e le hore boima ba eona ke tlaase, deformation ke nyenyane, 'me toughness e itekanetseng;Lera le ka holimo le na le li-carbides tse sa tsitsang, kahoo li na le boima bo phahameng le bo brittleness;Ka mohlala, peipi e nepahetseng e nyenyane ea tšepe e se nang seam e futhumatsa hape ka mor'a ho chesa le ho tima, 'me lijo-thollo li hloekisoa ka ho feletseng.Setsi se na le boima bo phahameng, boima bo tlaase, 'me bokaholimo ha bo na cementite ea marang-rang, kahoo ho thatafala ho phahame le ho thatafala ho molemo, empa bothata ke hore deformation e kholo.
Nako ea poso: Dec-06-2022