1. Uhlalutyo lwesakhiwo
(1) Okuivelufa butterflyinokwakheka kwecake ejikelezayo, umngxuma ongaphakathi udityaniswe kwaye uxhaswa ziimbambo ezi-8 eziqinisayo, umngxuma ongaphezulu we-Φ620 unxibelelana nomngxuma ongaphakathi, kunye nezinye iindawo.ivalveivaliwe, undoqo wesanti kunzima ukuwulungisa kwaye kulula ukuwukhubaza. Zombini ukukhupha kunye nokucocwa komngxuma ongaphakathi kuzisa ubunzima obukhulu, njengoko kubonisiwe kuMfanekiso 1.
Ubunzima bodonga lwee-castings buyahluka kakhulu, ubukhulu bodonga oluphezulu bufikelela kwi-380mm, kwaye ubuncinci bodonga buyi-36mm kuphela. Xa i-casting iqinisiwe, umehluko weqondo lokushisa mkhulu, kwaye i-shrinkage engalinganiyo inokuvelisa kalula i-shrinkage cavities kunye ne-shrinkage porosity defects, eya kubangela ukukhupha kwamanzi kuvavanyo lwe-hydraulic.
2. Uyilo lwenkqubo:
(1) Umphezulu wokwahlula uboniswe kuMzobo 1. Beka isiphelo kunye nemingxuma kwibhokisi ephezulu, yenza umbindi wesanti kumqolo ophakathi, kwaye wandise intloko engundoqo ngokufanelekileyo ukuququzelela ukuqiniswa kombindi wesanti kunye nokuhamba kwesanti. undoqo wesanti xa ibhokisi ijikwa. Izinzile, ubude bentloko engundoqo ye-cantilever yemingxuma emibini eyimfama esecaleni inde kunobude bomngxuma, ukuze umbindi womxhuzulane wawo wonke umbindi wesanti uthambekele kwicala lentloko engundoqo ukuqinisekisa ukuba Undoqo wesanti uzinzile kwaye uzinzile.
Kwamkelwa inkqubo yokugalela evalekileyo, ∑F ngaphakathi: ∑F othe tye: ∑F ngokuthe tye=1:1.5:1.3, ispreyi sisebenzisa ityhubhu yeceramic enedayamitha engaphakathi ye-Φ120, kunye neziqwenga ezibini ze-200×100×40mm refractory. izitena zibekwe emazantsi ukuthintela intsimbi enyibilikisiweyo ukusuka ngokuthe ngqo Kuba ifuthe isanti ngundo, a 150×150×40 ugwebu ulwelo lwe ceramic efakwe ezantsi kwimbaleki, kunye 12 iityhubhu zeramic kunye nobubanzi bangaphakathi Φ30 zisetyenziselwa Umgijimi ongaphakathi ukudibanisa ngokulinganayo ukuya ezantsi kokuphosa ngetanki yokuqokelela amanzi ezantsi kwesihluzi ukwenza inkqubo yokugalela ezantsi, njengoko kubonisiwe kuMfanekiso 2 Inqaku.
(3) Beka i-14 ∮ imingxuma yomoya engama-20 kumngxuma ophezulu, beka i-Φ200 yomngxuma wesanti embindini wombindi wentloko, beka intsimbi ebandayo kwindawo engqindilili kunye nenkulu ukuqinisekisa ukuqina okulinganayo kokusalwa, kwaye usebenzise Umgaqo wokwandiswa kwegraphitization ukurhoxisa I-riser yokutya isetyenziselwa ukuphucula isivuno senkqubo. Ubungakanani bebhokisi yesanti yi-3600 × 3600 × 1000/600mm, kwaye idityaniswe ngepleyiti yentsimbi eyi-25mm engqingqwa ukuze kuqinisekiswe ukomelela okwaneleyo kunye nobungqongqo, njengoko kubonisiwe kuMfanekiso 3.
3. Ulawulo lwenkqubo
(1) Ukulinganisa: Ngaphambi kokulinganisa, sebenzisa isampuli eqhelekileyo ye-Φ50 × 50mm ukuvavanya amandla oxinzelelo lwesanti ye-resin ≥ 3.5MPa, kwaye uqinise intsimbi ebandayo kunye nomgijimi ukuqinisekisa ukuba isikhunta sesanti sinamandla okwaneleyo ukucima igraphite eveliswayo. xa intsimbi etyhidiweyo iqina Ukwandiswa kwemichiza, kunye nokuthintela intsimbi etyhidiweyo ukuba ichaphazele indawo yembaleki ixesha elide ukubangela ukuhlamba isanti.
Ukwenziwa kondoqo: Isiseko sesanti sahlulwe saziindawo ezisi-8 ezilinganayo ngeembambo ezisi-8 eziqinisayo, ezidityaniswe ngomngxuma ophakathi. Ayikho enye inkxaso kunye neendawo zokukhupha ngaphandle kwentloko engundoqo ephakathi. Ukuba isiseko sesanti asikwazi ukulungiswa kunye ne-Exhaust, i-sand core displacement kunye nemingxuma yomoya iya kuvela emva kokugalelwa. Ngenxa yokuba indawo yonke yombindi wesanti inkulu, yahlulahlulwe yangamacandelo asibhozo. Kufuneka ibe namandla okwaneleyo kunye nokuqina ukuqinisekisa ukuba isiseko sesanti asiyi konakala emva kokukhululwa kwesikhunta, kwaye ayiyi konakala emva kokuthululwa. Ukuguqulwa kwenzeka, ukwenzela ukuba kuqinisekiswe ubukhulu bodonga obufanayo bokuphosa. Ngesi sizathu, senza ngokukodwa ithambo elingundoqo elikhethekileyo, kwaye silibophe kwithambo elingundoqo ngentambo yokukhupha umoya ukutsala igesi ephumayo kwintloko engundoqo ukuqinisekisa ukubumbana kobumba lwesanti xa usenza undoqo. Njengoko kubonisiwe kuMfanekiso 4.
(4) Ibhokisi yokuvala: Ukuqwalasela ukuba kunzima ukucoca isanti kwindawo yangaphakathi yevalve yebhabhathane, yonke isiseko sesanti sipeyintwe ngamacandelo amabini epeyinti, umaleko wokuqala uxutywe ngepeyinti ye-zirconium esekelwe kutywala (iBaume degree). 45-55), kwaye umaleko wokuqala upeyintwe kwaye utshiswe. Emva kokumisa, peyinta uluhlu lwesibini kunye nepeyinti ye-magnesium esekelwe etywaleni (i-Baume degree 35-45) ukukhusela ukuphosa ekunamatheleni kwisanti kunye ne-sintering, engenakucocwa. Inxalenye yentloko engundoqo ixhonywe kumbhobho wentsimbi we-Φ200 wesakhiwo esiphambili sethambo elingundoqo elinezikrufu ezintathu ze-M25, ezigxininisiweyo kwaye zitshixiwe kunye nebhokisi yesanti yokubumba ephezulu kunye ne-screw caps kwaye ihlolwe ukuba ubukhulu bodonga lwenxalenye nganye bufanayo.
4. Inkqubo yokunyibilika kunye nokugalela
(1) Sebenzisa i-Benxi ephantsi-P, S, Ti ekumgangatho ophezulu we-Q14/16# yentsimbi yehagu, kwaye uyifake kumlinganiselo we-40% ~ 60%; ukulandelela izinto ezifana ne-P, S, Ti, Cr, Pb, njl. zilawulwa ngokungqongqo kwintsimbi ye-scrap, kwaye akukho rust kunye neoli zivunyelwe, umlinganiselo wokongezwa ngu-25% ~ 40%; umrhumo obuyiselweyo kufuneka ucocwe ngokuqhunyiswa kokudubula ngaphambi kokusetyenziswa ukuqinisekisa ukucoceka kwentlawulo.
(2) Ulawulo lwecandelo eliphambili emva kwesithando somlilo: C: 3.5-3.65%, Si: 2.2% -2.45%, Mn: 0.25% -0.35%, P≤0.05%, S: ≤0.01%, Mg (intsalela): 0.035% ~ 0.05%, phantsi kwesiseko sokuqinisekisa i-spheroidization, umda ophantsi we-Mg (oseleyo) kufuneka uthathwe kangangoko kunokwenzeka.
(3) Unyango lwe-Spheroidization inoculation: i-magnesium ephantsi kunye ne-low-rare-earth spheroidizers isetyenzisiweyo, kwaye umlinganiselo wokongezwa ngu-1.0% ~ 1.2%. Indlela yokugungxulwa okuqhelekileyo unyango lwe-spheroidization, i-0.15% ye-inoculation yexesha elilodwa ihlanganiswe kwi-nodulizer ephantsi kwephakheji, kwaye i-spheroidization igqityiwe. I-slag ke i-subcontracted kwi-inoculation yesibini ye-0.35%, kunye ne-flow inoculation ye-0.15% iqhutyelwa ngexesha lokuthulula.
(5) Ukushisa okuphantsi kwenkqubo yokugalela ngokukhawuleza kuyamkelwa, ukushisa okuthululwayo ngu-1320 ° C ~ 1340 ° C, kwaye ixesha lokuthulula li-70 ~ 80s. Intsimbi etyhidiweyo ayinakuphazanyiswa ngexesha lokuthulula, kwaye indebe ye-sprue isoloko igcwele ukukhusela igesi kunye nokufakwa ekubandakanyekeni kwi-mold ngokusebenzisa umgijimi. umgodi.
5. Ukuphonononga iziphumo zovavanyo
(1) Vavanya amandla okuqina kwebhloko yovavanyo lokuphoswa: 485MPa, ubude: 15%, ubulukhuni beBrinell HB187.
(2) Isantya se-spheroidization yi-95%, ubukhulu begraphite yibanga lesi-6, kwaye i-pearlite yi-35%. Ubume bemetallographic buboniswe kuMfanekiso 5.
(3) Akukho ziphene ezirekhodiweyo ezifunyenwe kwi-UT kunye ne-MT yokukhangela impazamo yesibini yeendawo ezibalulekileyo.
(4) Ukubonakala kucaba kwaye kugudileyo (jonga uMzobo 6), ngaphandle kokuphosa iziphene ezifana nokufakwa kwesanti, i-slag inclusions, i-cold shuts, njl., Ubukhulu bodonga bufana, kwaye imilinganiselo ihlangabezana neemfuno zemizobo.
(6) I-20kg / cm2 uvavanyo loxinzelelo lwe-hydraulic emva kokucubungula aluzange lubonise ukuvuza
6. Isiphelo
Ngokweempawu zesakhiwo sale valve yebhabhathane, ingxaki yokungazinzi kwaye kulula ukuguqulwa kwesiseko esikhulu sesanti phakathi kunye nokucoca isanti enzima isonjululwe ngokugxininisa kuyilo lwesicwangciso senkqubo, ukuveliswa kunye nokulungiswa kwesiseko sesanti kunye ukusetyenziswa kweengubo ezisekelwe kwi-zirconium. Ukumiselwa kwemingxunya ye-vent kuthintela ukubakho kwee-pores kwi-castings. Ukusuka kulawulo lwentlawulo yesithando somlilo kunye nenkqubo yembaleki, isikrini sokucoca i-foam ceramic kunye netekhnoloji ye-ceramic ingate isetyenziselwa ukuqinisekisa ukucoceka kwentsimbi etyhidiweyo. Emva kokunyangwa kwe-inoculation ezininzi, isakhiwo se-metallographic of castings kunye neentlobo ezahlukeneyo Ukusebenza okubanzi kuye kwafikelela kwiimfuno eziqhelekileyo zabathengi.
UkusukaTianjin Tanggu Water-seal valve Co., Ltd. Ivalve yebhabhathane, ivalve yesango, Y-isihluzi, Ivalve yokujonga ipleyiti ephindwe kabiniukuvelisa.
Ixesha lokuposa: Apr-29-2023
