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Izinto zokusetshenziswa ze-valve ezifana nepuleti lesekhethi kawoyela, i-valve yokugeleza eyodwa kanye ne-piston valve yethulwa ngokuningiliziwe
2023-02-21
Izinto zokusetshenziswa ze-Valve ezifana nepuleti yesifunda samafutha, i-valve yokugeleza eyodwa kanye ne-piston valve yethulwa ngokuningiliziwe Ipuleti lesifunda samafutha, i-valve yokugeleza eyodwa kanye ne-valve yesango (i-piston valve) ingenye yezingxenye ezibalulekile ze-valve, ngokushesha thatha ingcindezi yokusebenza ephakathi, izinto zokusetshenziswa ezivame ukusetshenziswa kufanele zihlangabezane nezinhlinzeko ezifanele "zengcindezi ye-valve nezinga lokushisa". Insimbi ye-Carbon: Ifanele ukucindezela okuzisholo okungu-PN≤32.0MPa, izinga lokushisa -30 ~ 425℃ amanzi, umusi, igesi, i-hydrogen, i-ammonia, i-nitrogen nemikhiqizo ye-petroleum neminye imidiya. Amamaki avamile yi-WC1, WCB, ZG25 kanye nekhwalithi yensimbi engu-20, 25, 30 kanye nensimbi ye-alloy ephansi engu-16Mn. Insimbi engagqwali engamelana ne-asidi, ilungele ukucindezela okuzisholo okungu-PN≤6.4Mpa, izinga lokushisa ≤200℃ i-sodium cyanide, i-glacial acetic acid neminye imidiya... Izinto eziningi zokusetshenziswa zokukhiqiza nokukhiqizwa kwezingxenye zamavalvu, okuhlanganisa izinhlobo ezihlukahlukene zemikhiqizo yokukhanya. izinsimbi nezinsimbi eziyigugu kanye ne-aluminium alloy, izinto ezihlukahlukene ezingezona ezensimbi. Izinto ezisetshenziswayo zokukhiqiza izingxenye ze-valve kufanele zikhethwe ngokuya ngalezi zinto ezilandelayo: 1, ingcindezi ephakathi yokusebenza, izinga lokushisa kanye nezici. 2, umthamo wokuthwala wezingxenye futhi ngokuvamile udlala indima esakhiweni se-valve. 3. Ukusebenza kahle kwenqubo. 4. Ngaphansi kwesisekelo sokuhlangabezana nemibandela engenhla, izindleko eziphansi ziyadingeka. Izinto zokusetshenziswa zepuleti lesekhethi kawoyela, i-valve yokugeleza eyodwa kanye nepuleti le-valve (i-piston valve) Ipuleti lesekhethi yamafutha, i-valve yokugeleza eyodwa kanye ne-valve yesango (i-piston valve) ingenye yezingxenye ezibalulekile ze-valve, ngokushesha ithathe ingcindezi yokusebenza ephakathi, evame ukusetshenziswa. izinto zokusetshenziswa kufanele zihlangabezane nezinhlinzeko ezifanele "zengcindezi ye-valve nezinga lokushisa". Izinto ezivamile ziwela ezigabeni ezilandelayo: 1, insimbi empunga: insimbi empunga ifanele ukucindezela okuzisholo PN≤1.0MPa, izinga lokushisa -10℃ ~ 200℃ amanzi, umusi, igesi, igesi eliwuketshezi namafutha acwengisisiwe kanye neminye imidiya. Insimbi empunga ibanga elivamile: HT200, HT250, HT300, HT350. Okubili, insimbi ethambileyo: ifanele ingcindezi okuzisholo yona PN≤2.5MPa, izinga lokushisa -30 ~ 300℃ amanzi, umusi, igesi kanye nendawo kawoyela, izinhlobo ezivamile yilezi: KTH300-06, KTH330-08, KTH350-10. Okuthathu, ukukhishwa kwe-ductile: kulungele i-PN≤4.0MPa, izinga lokushisa -30 ~ 350℃ amanzi, umusi, igesi namafutha kanye neminye imidiya. Izinhlobo ezijwayelekile yilezi: QT400 -- 15, QT450 -- 10, QT500 -- 7. Ngenxa yezinga lamanje lobuchwepheshe bezwe lethu, izimboni zinhle kanti ezinye zimbi futhi amakhasimende akulula ukuwabona. Ngokusho kokuhlangenwe nakho, kuphakanyiswa ukuthi i-PN≤2.5MPa, i-valve noma i-valve yensimbi ikhethelwe ukuphepha. Okwesine, ukumelana ne-asidi ephezulu ye-silicon ductile casting: ifanele ingcindezi yegama elithi PN≤0.25MPa, izinga lokushisa elingaphansi kuka-120℃ medium corrosive medium. Ezinhlanu, i-carbon steel: ifanele ingcindezi yegama elithi PN≤32.0MPa, izinga lokushisa -30 ~ 425℃ amanzi, umusi, igesi, i-hydrogen, i-ammonia, i-nitrogen nemikhiqizo ye-petroleum neminye imidiya. Amamaki ajwayelekile yi-WC1, WCB, ZG25 kanye nekhwalithi yensimbi engu-20, 25, 30 kanye nensimbi ye-alloy ephansi engu-16Mn. Vi. Ingxubevange impahla: Ifanele PN≤2.5MPa amanzi, ulwandle, O2, igesi, uwoyela kanye nezinye imidiya, futhi izinga lokushisa -40 ~ 50℃ umhwamuko medium, brand ezivamile ZGnSn10Zn2(tin ithusi), H62, HPB59-1 (bomvu ithusi), Qaz19-2, Qa19-4 (ithusi le-aluminium). Okuyisikhombisa, izinga lokushisa eliphezulu eliqhubekayo lethusi: lilungele ukucindezela okuzisholo PN≤17.0MPA, izinga lokushisa ≤570℃ ukushisisa kwesitimu kanye nemikhiqizo kaphethiloli. Uhlobo olujwayelekile lune-ZGCr5Mo, 1 cr5m0. I-ZG20CrMoV, ZG15Gr1Mo1V, 12 crmov WC6, WC9, njll. Ukusetshenziswa kwangempela kufanele kuhambisane nokucindezela kwe-valve nezimfuneko zokumisa izinga lokushisa. Insimbi eyisishiyagalombili, izinga lokushisa eliphansi, elifanele ukucindezela okuzisholo PN≤6.4Mpa, izinga lokushisa ≥ -196 ℃ butadiene, pe, igesi yemvelo ewuketshezi, i-nitrogen ewuketshezi kanye neminye imidiya, izinhlobo ezivamile) yi-ZG1Cr18Ni9, 0Cr18Ni9, 1Cr18Ni9Ti, ZG0Cr18Nix Resistant, ZG0Cr18 insimbi, ifanele ukucindezela okuzisholo PN≤6.4Mpa, izinga lokushisa ≤200℃ sodium cyanide, i-acetic acid nezinye imidiya, izinhlobo ezivamile ZG0Cr18Ni9Ti, ZG0Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, ukumelana ne-asidi nesixazululo se-urea Ububanzi bokugcina bephutha le-disc le-traging alikwazi ukuba yi-disc free traging. kulawulwa ngenxa yobubanzi nokwakheka konqenqema kwethusi ne-alloy castings yensimbi ye-valve, ngakho-ke akukho ukubekezelelana kwe-dimensional okudingekayo. Umphakeli ohlongozwayo kanye ne-oda lokufaka ngaphambi kokuthenga izinto zokusebenza, noma inani lalowo mkhiqizo oshumekiwe oyinsalela yomshini. Imibhobho edalwe amaphethelo amaholo, izingxenye zokubhoboza, umshini wokubhoboza, noma ukudlula umhlahlandlela wokufa wefa lokubumba ivunyelwe inqobo nje uma isusiwe ngesikhathi somshini noma ingenabungozi ukuhlala kumkhiqizo oqediwe (G1,G2,G3, kanye ne-G4 ku-FIG 9). Umdwebo kufanele ukhombise ukuthi amaphethelo anjalo akumele adlule ku-1.5 mm Ukuxhuma: Ukubunjwa kwensimbi yethusi kanye nengxubevange yezinto zokusetshenziswa kwamavalvu (II) Amaphutha e-Dimensional ngaphakathi nakwenqamula imigqa yokuhlukanisa - imigqa yokuhlukanisa Iqembu lempahla eluhlaza I, imininingwane, kanye t kufanele kuhambisane ububanzi bokuchezuka obunikezwe kuThebula 14, kuyilapho iqembu lempahla eluhlaza Ⅱ kufanele livumelane neThebula 15, iqembu lezinto ezingavuthiwe Ⅲ Ukucaciswa okukhulu kwe-engeli yokubala, i-tmax, ubukhulu obuyisisekelo bokubekezelela kobukhulu obutholakalayo kuwo wonke u-t wokucaciswa komugqa wokuhlukanisa. Iphutha le-tmax lisendaweni yokuthuthukiswa A ye-Engeli yesiteleka esiqinile sengxenye. Endabeni yezingxenye ze-annular, indawo ephelele A ilingana nendawo yendilinga A; esimweni sezingxenye ezingavamile, indawo ephelele A ilingana nendawo yonxande osikiwe wangaphandle (bheka Umfanekiso 4). Zonke izicaciso ezincane zinephutha elifanayo ne-tmax.