1. Ukuhlaziywa kwesakhiwo
(1) Lokhuuvemvane valveinesakhiwo esimise okwekhekhe eliyindilinga, ingaphakathi langaphakathi lixhumeke futhi lisekelwa izimbambo eziyi-8 eziqinisayo, imbobo engu-Φ620 ephezulu ixhumana nengaphakathi, kanti enye ingxenye.i-valveivaliwe, umgogodla wesihlabathi kunzima ukuwulungisa futhi kulula ukuwukhubaza. Kokubili i-exhaust kanye nokuhlanzwa kwesikhala sangaphakathi kuletha ubunzima obukhulu, njengoba kuboniswe kuMfanekiso 1.
Ubukhulu bodonga lwama-castings buyahlukahluka kakhulu, ubukhulu bodonga obukhulu bufinyelela ku-380mm, futhi ubukhulu bodonga obuncane bungama-36mm kuphela. Uma ukubunjwa kuqinisiwe, umehluko wezinga lokushisa mkhulu, futhi ukuncipha kokungalingani kungakhiqiza kalula imigodi enciphayo kanye nokukhubazeka kwe-porosity, okuzobangela ukuphuma kwamanzi ekuhlolweni kwe-hydraulic.
2. Idizayini yenqubo:
(1) Indawo ehlukanisayo ibonisiwe kuMfanekiso 1. Beka isiphetho esinezimbobo ebhokisini elingaphezulu, wenze inkaba yesihlabathi esiphakathi nendawo, futhi welule ikhanda eliwumgogodla ngendlela efanele ukuze kube lula ukuqiniswa komgogodla wesihlabathi kanye nokunyakaza kwesihlabathi. umgogodla wesihlabathi lapho ibhokisi liphendulwa. Izinzile, ubude benhloko ye-cantilever core yezimbobo ezimbili eziyimpumputhe ohlangothini bude kunobude bembobo, ukuze isikhungo samandla adonsela phansi kuwo wonke umgogodla wesihlabathi sicheme ohlangothini lwekhanda eliyinhloko ukuze kuqinisekiswe ukuthi umgogodla wesihlabathi ugxilile futhi uzinzile.
Kusetshenziswa isistimu yokuthela evaleke kancane, ∑F ngaphakathi: ∑F evundlile: ∑F iqonde=1:1.5:1.3, i-sprue isebenzisa ishubhu leceramic elinobubanzi obungaphakathi obungu-Φ120, nezingcezu ezimbili ze-200×100×40mm refractory. izitini zibekwe phansi ukuze kuvinjwe insimbi encibilikisiwe ukuthi ingangeni ngqo Ukuze isikhunta sesihlabathi esinomthelela, isihlungi se-ceramic esingu-150×150×40 sifakwe ngaphansi komgijimi, kanye namashubhu e-ceramic angu-12 anobubanzi obungaphakathi buka-Φ30 asetshenziselwa umgijimi ongaphakathi ukuze axhume ngokulinganayo phansi kokuphonswa ngethangi lokuqoqa amanzi ngaphansi kwesihlungi ukuze enze isikimu sokuthulula esiphansi, njengoba kuboniswe kuMfanekiso 2 Ingqikithi
(3) Beka izimbobo zomoya eziyi-14 ∮20 esibunjeni esingaphezulu, beka imbobo yesihlabathi engu-Φ200 phakathi nenhloko emaphakathi, ubeke insimbi ebandayo ezingxenyeni eziwugqinsi nezinkulu ukuze uqinisekise ukuqina okulinganayo kokubunjwa, futhi usebenzise Umgomo wokwandisa i-graphitization ukukhansela Isikhuphukeli sokuphakela sisetshenziselwa ukuthuthukisa isivuno senqubo. Ubukhulu bebhokisi lesihlabathi buyi-3600 × 3600 × 1000/600mm, futhi bushiselwe ngepuleti lensimbi eliwugqinsi elingu-25mm ukuze kuqinisekiswe amandla anele nokuqina, njengoba kuboniswe kuMfanekiso 3.
3. Ukulawula inqubo
(1) Ukumodela: Ngaphambi kokumodela, sebenzisa isampula evamile ye-Φ50×50mm ukuhlola amandla okucindezela esihlabathi se-resin ≥ 3.5MPa, futhi uqinise insimbi ebandayo kanye nomgijimi ukuze uqinisekise ukuthi isikhunta sesihlabathi sinamandla anele okunciphisa i-graphite ekhiqizwayo. lapho insimbi encibilikisiwe iqinisa ukunwetshwa kweKhemikhali, futhi ivimbele insimbi encibilikisiwe ukuthi ingabambi ingxenye yomgijimi isikhathi eside ukuze ibangele ukugezwa kwesihlabathi.
Ukwakhiwa kwe-core: I-sand core ihlukaniswe izingxenye ezingu-8 ezilinganayo ngezimbambo ezi-8 eziqinisayo, ezixhunywe emgodini ophakathi. Azikho ezinye izingxenye zokusekela kanye ne-exhaust ngaphandle kwekhanda eliphakathi nendawo. Uma i-sand core ingakwazi ukulungiswa kanye ne-Exhaust, ukukhishwa kwe-sand core kanye nezimbobo zomoya kuzovela ngemva kokuthululwa. Ngenxa yokuthi indawo yonke yomgogodla wesihlabathi inkulu, ihlukaniswe izingxenye eziyisishiyagalombili. Kumele ibe namandla anele kanye nokuqina ukuze kuqinisekiswe ukuthi umgogodla wesihlabathi ngeke wonakaliswe ngemuva kokukhululwa kwesikhunta, futhi ngeke wonakaliswe ngemva kokuthululwa. I-deformation iyenzeka, ukuze kuqinisekiswe ukushuba kwezindonga ezifanayo. Ngenxa yalesi sizathu, senza ngokukhethekile ithambo eliwumgogodla elikhethekile, futhi silibophela ethanjeni eliwumgogodla ngentambo yokungenisa umoya ukuze sidonse igesi yokukhipha ephuma ekhanda eliwumgogodla ukuze siqinisekise ukubumbana kwesikhunta sesihlabathi lapho senza umongo. Njengoba kuboniswe kuMfanekiso 4.
(4) Ibhokisi lokuvala: Uma kucatshangelwa ukuthi kunzima ukuhlanza isihlabathi emgodini wangaphakathi we-valve uvemvane, wonke umgogodla wesihlabathi upende ngezingqimba ezimbili zopende, ungqimba lokuqala luxutshwe ngopende we-zirconium osekelwe utshwala (i-Baume degree 45-55), futhi ungqimba lokuqala luyapendwa futhi lushiswe. Ngemuva kokumisa, penda ungqimba lwesibili ngopende lwe-magnesium olusekelwe etshwaleni (i-Baume degree 35-45) ukuvimbela ukubunjwa ukuthi kunamathele esihlabathini nasekushiseni, okungenakuhlanzwa. Ingxenye yekhanda eliwumgogodla ilengiswe epayipini lensimbi elingu-Φ200 lesakhiwo esiyinhloko sethambo eliwumgogodla elinezikulufu ezintathu ze-M25, ezigxilile futhi zikhiywe ngebhokisi lesihlabathi lesikhunta elingaphezulu elinama-screw caps futhi kuhlolwe ukuthi ukushuba kodonga lwengxenye ngayinye akufani yini.
4. Inqubo yokuncibilika nokuthulula
(1) Sebenzisa i-Benxi low-P, S, Ti yekhwalithi ephezulu ye-Q14/16# yensimbi yengulube, bese uyengeza ngesilinganiso esingu-40%~60%; ukulandelela izakhi ezifana ne-P, S, Ti, Cr, Pb, njll. zilawulwa ngokuqinile ensimbi yensimbi, futhi akukho ukugqwala namafutha avunyelwe, isilinganiso sokwengeza singama-25% ~ 40%; inkokhiso ebuyisiwe kufanele ihlanzwe ngokuqhunyiswa kwesibhamu ngaphambi kokusetshenziswa ukuze kuqinisekiswe ukuhlanzeka kwenkokhiso.
(2) Ukulawulwa kwengxenye eyinhloko ngemva kwesithando somlilo: C: 3.5-3.65%, Si: 2.2% -2.45%, Mn: 0.25% -0.35%, P≤0.05%, S: ≤0.01%, Mg (insalela): 0.035% ~0.05%, ngaphansi kwesisekelo sokuqinisekisa i-spheroidization, umkhawulo ophansi we-Mg (osele) kufanele uthathwe ngangokunokwenzeka.
(3) Ukwelashwa kwe-spheroidization inoculation: i-magnesium ephansi kanye ne-low-rare-earth spheroidizers isetshenziswa, futhi isilinganiso sokwengeza singu-1.0% ~ 1.2%. Indlela evamile yokwelapha i-spheroidization, i-0.15% ye-inoculation yesikhathi esisodwa imbozwa ku-nodulizer engaphansi kwephakheji, futhi i-spheroidization iyaqedwa. I-slag ibe i-subcontracted for inoculation yesibili ka-0.35%, futhi ukugeleza kwe-inoculation ka-0.15% kwenziwa ngesikhathi sokuthululwa.
(5) Inqubo yokuthulula esheshayo yokushisa ephansi iyamukelwa, izinga lokushisa lokuthulula liyi-1320 ° C ~ 1340 ° C, futhi isikhathi sokuthulula singama-70 ~ 80s. Insimbi encibilikisiwe ayikwazi ukuphazanyiswa ngesikhathi sokuthululwa, futhi indebe ye-sprue ihlale igcwele ukuvimbela igesi kanye nokufakwa ekubandakanyekeni ekubumbeni ngokusebenzisa umgijimi. umgodi.
5. Ukusakaza imiphumela yokuhlolwa
(1) Hlola ukuqina kwebhulokhi yokuhlola yabalingisi: 485MPa, ubude: 15%, ubulukhuni beBrinell HB187.
(2) Izinga le-spheroidization lingama-95%, ubukhulu begraphite buyibanga lesi-6, kanti i-pearlite ingu-35%. Isakhiwo se-metallographic sikhonjiswe kuMfanekiso 5.
(3) Awekho amaphutha angarekhodwa atholakele ku-UT kanye ne-MT yokutholwa kwamaphutha ezingxenyeni ezibalulekile.
(4) Ukubukeka kuyisicaba futhi kubushelelezi (bheka Umfanekiso 6), ngaphandle kokulimala okufana nokufaka isihlabathi, ukufakwa kwe-slag, ukuvala okubandayo, njll., ubukhulu bodonga bufana, futhi ubukhulu buhlangabezana nezidingo zemidwebo.
(6) 20kg/cm2 ukuhlolwa kwengcindezi ye-hydraulic ngemva kokucubungula akuzange kubonise ukuvuza
6. Isiphetho
Ngokusho kwezici zesakhiwo sale valve ye-butterfly, inkinga yokuguquguquka okungazinzile nokulula komgogodla omkhulu wesihlabathi ophakathi nendawo enzima yokuhlanza isihlabathi ixazululwa ngokugcizelela ukuklanywa kohlelo lwenqubo, ukukhiqizwa nokulungiswa komgogodla wesihlabathi kanye ukusetshenziswa kwezingubo ezisekelwe ku-zirconium. Ukumiswa kwezimbobo zokuphuma kugwema ukuthi kube khona izimbotshana ekubunjweni. Kusukela kulawulo lokushaja kwesithando somlilo kanye nohlelo lomgijimi, isikrini sesihlungi se-ceramic esiyigwebu kanye nobuchwepheshe be-ceramic ingate kusetshenziswa ukuqinisekisa ubumsulwa bensimbi encibilikisiwe. Ngemuva kokwelashwa okuningana kwe-inoculation, isakhiwo se-metallographic sokusakazwa kanye nokuhlukahluka Ukusebenza okuphelele kufinyelele izidingo ezijwayelekile zamakhasimende.
KusukaI-Tianjin Tanggu Water-seal valve Co., Ltd. Butterfly valve, i-valve yesango, I-Y-strainer, i-valve yokuhlola ipuleti elicwecwe kabiliukukhiqiza.
Isikhathi sokuthumela: Apr-29-2023
