0102030405
Valofo ea khase, mehato ea ho hloekisa silinda ka kakaretso valve ea carbon steel e theha maemo a tekheniki
2022-11-17
Belofo ea khase, mehato ea ho hloekisa lisilinda valve e akaretsang khabone tšepe ea forging maemo a botekgeniki Ho hloekisoa ha belofo ea khase le selindara sa tšepe ke ntho e 'ngoe e lokelang ho etsoa pele ho kopanngoa likarolo le likarolo tsa belofo. Ts'ebetso ena e ka phethoa ka mehato e mengata e thata. Haeba ho na le bohlasoa mehatong ena, ho ka etsahala hore ho ka baka likotsi tse patiloeng nakong e tlang. Ho hloekisoa ha valve ea khase le valve ea cylinder ea tšepe ke ntho e le 'ngoe e lokelang ho etsoa pele ho kopano ea likarolo le likarolo tsa valve. Ts'ebetso ena e ka phethoa ka mehato e mengata e thata. Haeba ho na le bohlasoa mehatong ena, ho ka etsahala hore ho ka baka likotsi tse patiloeng nakong e tlang. Mekhoa ea ho hloekisa bakeng sa li-valve tsa khase le li-cylinders Mehato e tobileng: 1. Ho ea ka litlhoko tsa ts'ebetso, likarolo tse ling li hloka ho belisoa ntle le ho sebetsana le li-burrs holim'a metsi Likarolo tsohle li tlosoa 3. Pickling passivation e etsoa ka mor'a ho theoha, 'me moemeli oa ho hloekisa ha a etse joalo. li na le phosphorus 4 Kamora pickling passivation, rinse ka metsi a hloekileng, ha ho na masala a lithethefatsi, likarolo tsa carbon steel li siea mohato ona 5 Omisa likarolo ka bonngoe ka lesela le sa lohiloeng. U se ke ua siea bokaholimo ba likarolo ka boea ba terata kapa ua omisa ka nitrogen e hloekileng Bala mehato e ka holimo, ke lumela hore u utloisisitse, boleng, litekanyetso tsa polokeho ea valve ea botlolo, ho sehokelo se seng le se seng ho etsa ka hloko, hobane ke ka tsela ena feela ts'ireletso ea mosebelisi le khoebo ea bareki e ikarabellang! Maemo a Tekheniki bakeng sa li-valve tse akaretsang tsa carbon steel, li-flanges, li-fittings tsa liphaephe le litlhoko tse ling tsa compression steel forgings, mekhoa ea liteko, melao ea tlhahlobo, litlhoko tsa ho odara, matšoao le litifikeiti tsa boleng. Ingot e tla ba le lipheletso tse lekaneng tsa ho itšeha ho thibela mefokolo e kotsi (ho kenyeletsoa shrinkage, karohano, ho mena, joalo-joalo). Forging e tla netefatsa deformation e felletseng ea forgings ho fihlela litlhoko tsa moralo le tekheniki. Nakong ea forging, forgings e lokela ho netefatsoa hore e pholile butle ha e feta har'a mokhahlelo oa phetoho ea mocheso. Kamora hore forging e qetelle e thehilwe, e tlameha ho pholile ho isa tlase ho 500 ℃ pele kalafo e boletsoeng ea mocheso e ka etsoa. Bophahamo ba Tekanyetso ena bo totobatsa litlhoko, mekhoa ea liteko, melao ea tlhahlobo, litlhoko tsa ho odara, matšoao le litifikeiti tsa boleng bakeng sa mehaho e akaretsang ea tšepe ea k'habone joalo ka li-valve, li-flanges le lisebelisoa tsa lipeipi. Tekanyetso ena e sebetsa ho likhoele tsa tšepe tse hatelletsoeng ka kakaretso joalo ka li-valve, li-flange le li-fittings tsa lipeipi (tseo mona li tla bitsoa forgings). Li-non-compress forgings li ka etsoa ka litšupiso. Tokomane ea litšupiso e tloaelehileng Litokomane tse latelang li theha lipehelo tsa maemo ana ho latela Tekanyetso ea lehong. Liphetoho tsohle tse latelang (ntle le errata) kapa liphetoho litokomaneng tse boletsoeng ka nako ea tlhaloso ha li sebetse boemong bona. Leha ho le joalo, batho ba nang le tumellano tlas'a Tekanyetso ea Woods ba khothalletsoa ho batlisisa tšebeliso ea liphetolelo tsena tsa litokomane. Bakeng sa litšupiso tse se nang nako, liphetolelo tsa bona li sebetsa ho latela maemo ana. GB 150 tšepe ea khatello ea tšepe ea GB/T 228 Lisebelisoa tsa tšepe -- Mokhoa oa ho etsa liteko ka mocheso oa kamore (GB/T 228-2000,eqv ISO 6892:1998) GB/T 229 Metal Charpy notch tshusumetso mokhoa oa teko Metallic Brinell liteko tsa boima -- Karolo 1: Mekhoa ea teko (GB/ T231.1-2002,eqv ISO 6506-1,1999) GB/T669 boima ba carbon structural steel Boemo ba sampole le ho lokisetsa sampole bakeng sa teko ea thepa ea mochini ea GB/T2975 Steel and Steel Products (GB/T 2975) -1998,eqv ISO 377:1997) GB/T 13927 General valve pressure test (GB/T 13927-1992.neq ISO 5208:1982) JB 4725 sekepe sa khatello se nang le carbon le low alloy steel forgings JB 4730 phuputso ea khatello ea sekepe ASTM A105 tlhahlobo ea khatello ea ASTM A105 / A1055:2003 Carbon Steel forgings bakeng sa Litlhoko tsa Likarolo tsa Liphaephe Litlhoko tse Kakaretso Khetho ea thepa ea forging ho latela lipehelo tsa Letlapa la 1, ho ka sebelisoa lisebelisoa tse ling tse nang le thepa e tšoanang. Letlapa la 1 Mokhahlelo oa lintho tse entsoeng ka tšepe. Ingot e tla ba le lipheletso tse lekaneng tsa ho itšeha ho thibela mefokolo e kotsi (ho kenyeletsoa shrinkage, karohano, ho mena, joalo-joalo). Forging e tla netefatsa deformation e felletseng ea forgings ho fihlela litlhoko tsa moralo le tekheniki. Nakong ea forging, forgings e lokela ho netefatsoa hore e pholile butle ha e feta har'a mokhahlelo oa phetoho ea mocheso. Kamora hore forging e qetelle e thehilwe, e tlameha ho pholile ho isa tlase ho 500 ℃ pele kalafo e boletsoeng ea mocheso e ka etsoa. Phekolo ea mocheso Li-Forging tse nang le khatello ea lebitso le fetang PN20 le li-flange ntle le sehlopha sa khatello li tlameha ho phekoloa mocheso. Mekhoa ea ho phekola mocheso ke annealing, normalizing, or normalizing and tempering. 25. Mocheso oa mocheso oa mocheso oa tšepe oa A105 o ka bua ka litekanyetso ho Lethathamo la 2. Lisebelisoa tse ling li tla bua ka litekanyetso tse amehang. Letlapa la 2 Phekolo ea mocheso Mocheso oa mocheso Sebopeho sa lik'hemik'hale Sebopeho sa lik'hemik'hale se tla finyella litlhoko tsa Lethathamo la 3. Lik'hemik'hale tsa lisebelisoa tse ling ho latela melao ea GB/T 699. Letlapa la 3 Sebopeho sa lik'hemik'hale Ha khabone e boletsoeng e le ka tlase ho 0.35%, bakeng sa phokotso e 'ngoe le e 'ngoe ea khabone ea 0.01I, 0.06% ea manganese e lumelloa ho eketsoa ho 1.05% ea manganese e boletsoeng ho fihlela e feta 1.35%. Kakaretso ea litaba tsa Cu,Ni,Cr le Mo.v ha ea lokela ho feta 1.0% Cr mme kakaretso ea litaba tsa Mo ha ea lokela ho feta 0.32%