1. Kusanthula kwamapangidwe
(1) Izivalavu ya butterflyali ndi mawonekedwe ozungulira ngati keke, mkati mwake amalumikizidwa ndikuthandizidwa ndi nthiti 8 zolimbitsa, dzenje lapamwamba la Φ620 limalumikizana ndi khomo lamkati, ndi zina zonse.valavuchatsekedwa, pachimake mchenga n'zovuta kukonza ndi zosavuta deform. Zonse ziwiri zotulutsa utsi ndi kuyeretsa m'kati mwake zimabweretsa zovuta, monga momwe tawonetsera pa Chithunzi 1.
Makulidwe a khoma la ma castings amasiyana kwambiri, makulidwe a khoma amafika 380mm, ndipo makulidwe ocheperako ndi 36mm okha. Pamene kuponyerako kuli kolimba, kusiyana kwa kutentha kumakhala kwakukulu, ndipo shrinkage yosagwirizana imatha kupanga mosavuta zibowo za shrinkage ndi shrinkage porosity defects, zomwe zidzachititsa kuti madzi ayambe kuyesedwa mu hydraulic test.
2. Kapangidwe kake:
(1) Malo olekanitsa akuwonetsedwa mu Chithunzi 1. Ikani mapeto ndi mabowo pabokosi lakumtunda, pangani mchenga wonse pakati pazitsulo zapakati, ndikutalikitsa mutu wapakati moyenerera kuti muzitha kumangirira pachimake cha mchenga ndi kuyenda kwa mchenga pamene bokosilo likutembenuzidwa. Khola, kutalika kwa mutu wa cantilever pachimake cha mabowo awiri akhungu pambaliyi ndi yaitali kuposa kutalika kwa dzenje, kotero kuti pakati pa mphamvu yokoka ya mchenga wa mchenga wonse umakondera kumbali ya mutu wapakati kuonetsetsa kuti mchenga wa mchenga ndi wokhazikika komanso wosasunthika.
Dongosolo lothira lotsekeka limakhazikitsidwa, ∑F mkati: ∑F yopingasa: ∑F yowongoka=1:1.5:1.3, sprue amagwiritsa ntchito chubu chadongo chokhala ndi mainchesi a Φ120, ndi zidutswa ziwiri za 200×100×40mm njerwa zomangira zimayikidwa pansi pa chitsulo chosungunula kuti chiteteze ku chitsulo chosungunula. 150 × 150 × 40 thovu ceramic fyuluta waikidwa pansi pa wothamanga, ndi 12 ceramic machubu ndi m'mimba mwake wa mkati Φ30 ntchito kwa wothamanga wamkati kulumikiza wogawana pansi kuponya mwa thanki zosonkhanitsira madzi pansi pa fyuluta kupanga pansi kuthira chiwembu, monga momwe chithunzi 2 Essence.
(3) Ikani 14 ∮20 mabowo a mpweya mu nkhungu yakumtunda, ikani dzenje la Φ200 la mchenga pakati pa mutu wapakati, ikani chitsulo chozizira muzitsulo zazikulu ndi zazikulu kuti mutsimikizire kulimba kokwanira kwa kuponyera, ndikugwiritsa ntchito mfundo yowonjezera ya graphitization kuti muletse Chokwera chodyera chimagwiritsidwa ntchito kupititsa patsogolo zokolola. Kukula kwa bokosi mchenga ndi 3600 × 3600 × 1000/600mm, ndipo welded ndi 25mm wandiweyani mbale zitsulo kuonetsetsa mphamvu zokwanira ndi okhwima, monga momwe chithunzi 3.
3. Kuwongolera njira
(1) Chitsanzo: Musanayambe chitsanzo, gwiritsani ntchito chitsanzo cha Φ50 × 50mm kuti muyese mphamvu yopondereza ya mchenga wa utomoni ≥ 3.5MPa, ndikumangitsa chitsulo chozizira ndi wothamanga kuti muwonetsetse kuti nkhungu yamchenga imakhala ndi mphamvu zokwanira zothetsera graphite yomwe imapangidwa pamene chitsulo chosungunula chimalimbitsa kukula kwa Chemical, ndikuletsa nthawi yosungunuka kuti iwononge chitsulo chamchenga.
Kupanga koyambira: Pakatikati pa mchenga wagawidwa magawo 8 ofanana ndi nthiti 8 zolimbitsa, zomwe zimalumikizidwa kudzera pakatikati. Palibe mbali zina zothandizira ndi kutulutsa mpweya kupatula mutu wapakati wapakati. Ngati phata la mchenga silingakhazikike ndipo Utsi, kusuntha kwapakati pa mchenga ndi mabowo a mpweya zidzawonekera pambuyo pothira. Chifukwa dera lonse la phata la mchenga ndi lalikulu, limagawidwa m'magawo asanu ndi atatu. Iyenera kukhala ndi mphamvu zokwanira komanso zolimba kuti zitsimikizire kuti pachimake cha mchenga sichidzawonongeka pambuyo pa kumasulidwa kwa nkhungu, ndipo sichidzawonongeka pambuyo pa kuthira. Kupindika kumachitika, kuti atsimikizire makulidwe a khoma la yunifolomu ya kuponyera. Pazifukwa izi, tidapanga fupa lapadera lapadera, ndikulimanga pachimake ndi chingwe chothandizira mpweya wabwino kuti tikoke mpweya wotuluka pamutu wapakatikati kuti titsimikizire kuti nkhungu yamchenga imagwirizana popanga pachimake. Monga momwe chithunzi 4 chikusonyezera.
(4) Bokosi lotsekera: Poganizira kuti ndizovuta kuyeretsa mchenga mkati mwa valavu ya butterfly, mchenga wonsewo umapakidwa utoto ndi zigawo ziwiri za utoto, wosanjikiza woyamba umapukutidwa ndi utoto wa zirconium wopangidwa ndi mowa (Baume digiri 45-55), ndipo wosanjikiza woyamba amapaka utoto ndikuwotchedwa. Mukatha kuyanika, pentani gawo lachiwiri ndi utoto wa magnesium wopangidwa ndi mowa (Baume degree 35-45) kuti muteteze kuponyedwa kuti zisamamatire pamchenga ndi sintering, zomwe sizingatsukidwe. Chigawo chapakati pamutu chimapachikidwa pa chitoliro chachitsulo cha Φ200 cha fupa lalikulu la fupa lapakati ndi zomangira zitatu za M25, zokhazikika ndi zokhoma ndi bokosi la mchenga la nkhungu lapamwamba ndi zipewa ndikuyang'ana ngati makulidwe a khoma la gawo lililonse ndi yunifolomu.
4. Njira yosungunuka ndi kuthira
(1) Gwiritsani ntchito Benxi low-P, S, Ti yapamwamba Q14 / 16 # nkhumba chitsulo, ndi kuwonjezera pa chiŵerengero cha 40% ~ 60%; kufufuza zinthu monga P, S, Ti, Cr, Pb, ndi zina zotero zimayendetsedwa mosamalitsa muzitsulo zowonongeka, ndipo palibe dzimbiri ndi mafuta omwe amaloledwa, chiŵerengero chowonjezera ndi 25% ~ 40%; malipiro obwezeredwa ayenera kutsukidwa ndi kuwomberedwa kuwombera musanagwiritse ntchito kuti zitsimikizire ukhondo wa mlanduwo.
(2) Main chigawo ulamuliro pambuyo ng'anjo: C: 3.5-3.65%, Si: 2.2% -2.45%, Mn: 0.25% -0.35%, P≤0.05%, S: ≤0.01%, Mg (zotsalira): 0.035% ya 0.035% ensuring, m'munsi mwa 0. malire a Mg (otsalira) ayenera kumwedwa momwe angathere.
(3) Chithandizo cha spheroidization inoculation: otsika-magnesium ndi otsika-osowa-earth spheroidizers amagwiritsidwa ntchito, ndipo chiŵerengero chowonjezera ndi 1.0% ~ 1.2%. Ochiritsira flushing njira spheroidization mankhwala, 0,15% ya nthawi imodzi inoculation yokutidwa pa nodulizer pansi pa phukusi, ndi spheroidization anamaliza. The slag ndiye subcontracted kwa yachiwiri inoculation 0,35%, ndi otaya inoculation 0,15% ikuchitika pa kuthira.
(5) Njira yothira kutentha yotsika imatengedwa, kutentha kothira ndi 1320 ° C ~ 1340 ° C, ndipo nthawi yothira ndi 70 ~ 80s. Chitsulo chosungunuka sichikhoza kusokonezedwa panthawi yothira, ndipo chikho cha sprue nthawi zonse chimakhala chodzaza kuti chiteteze gasi ndi inclusions kuti asalowe mu nkhungu kupyolera mwa wothamanga. pakamwa.
5. Kuponya zotsatira za mayeso
(1) Yesani kulimba kwa chipika choyeserera: 485MPa, elongation: 15%, Brinell hardness HB187.
(2) Mlingo wa spheroidization ndi 95%, kukula kwa graphite ndi giredi 6, ndipo pearlite ndi 35%. Mapangidwe a metallographic akuwonetsedwa mu Chithunzi 5.
(3) Palibe zolakwika zojambulidwa zomwe zidapezeka mu UT ndi MT kuzindikira zolakwika za mbali zofunika.
(4) Maonekedwewo ndi athyathyathya komanso osalala (onani Chithunzi 6), popanda kuponyera zolakwika monga mchenga wa mchenga, slag inclusions, kutsekedwa kozizira, etc., makulidwe a khoma ndi yunifolomu, ndipo miyeso imakwaniritsa zofunikira za zojambulazo.
(6) 20kg / cm2 hydraulic pressure pressure test after processing sanawonetse kutayikira kulikonse
6. Mapeto
Malinga ndi makhalidwe structural valavu gulugufe, vuto kusakhazikika ndi zosavuta mapindikidwe pachimake chachikulu mchenga pakati ndi zovuta kuyeretsa mchenga kuthetsedwa ndi kutsindika pa kamangidwe ka ndondomeko ndondomeko, kupanga ndi kukonza pachimake mchenga ndi ntchito zokutira zirconium zochokera. Kuyika kwa mabowo otuluka kumapewa kuthekera kwa pores mu castings. Kuchokera paulamuliro wa ng'anjo ndi makina othamanga, chophimba cha foam ceramic fyuluta ndi ukadaulo wa ceramic ingate amagwiritsidwa ntchito kuwonetsetsa kuyera kwachitsulo chosungunuka. Pambuyo mankhwala kangapo inoculation, kapangidwe metallographic wa castings ndi zosiyanasiyana Ntchito mabuku wafika muyezo zofunika makasitomala.
KuchokeraTianjin Tanggu Water-seal valve Co., Ltd. Valve ya butterfly, valve pachipata, Y-strainer, valavu yowunikira mbale ziwirikupanga.
Nthawi yotumiza: Apr-29-2023
