Zida zopangira ma valavu monga mbale yamafuta ozungulira, valavu yoyenda imodzi ndi valavu ya pistoni zimayambitsidwa mwatsatanetsatane

Valve zopangira monga mbale yamafuta ozungulira, valavu yoyenda limodzi ndi valavu ya pistoni zimayambitsidwa mwatsatanetsatane mbale yozungulira yamafuta, valavu imodzi yoyenda ndi valavu yachipata (pistoni valavu) ndi imodzi mwamagawo ofunikira a valavu, nthawi yomweyo lingalirani kupanikizika kwapakati, Zomwe zimagwiritsidwa ntchito nthawi zambiri ziyenera kukwaniritsa zofunikira za "valve pressure ndi kutentha kwa msinkhu". Mpweya wa carbon zitsulo: Oyenera kukakamiza mwadzina PN≤32.0MPa, kutentha -30 ~ 425 ℃ madzi, nthunzi, mpweya, haidrojeni, ammonia, nayitrogeni ndi mafuta a petroleum ndi media zina. kalasi Common ndi WC1, WCB, ZG25 ndi khalidwe zitsulo 20, 25, 30 ndi otsika aloyi zitsulo 16Mn. Asidi zosapanga dzimbiri zosagwira chitsulo, oyenera kuthamanga mwadzina PN≤6.4Mpa, kutentha ≤200℃ sodium cyanide, glacial acetic acid ndi TV zina... Zambiri zopangira kupanga ndi kupanga valavu mbali, kuphatikizapo mitundu yosiyanasiyana ya kuwala. zitsulo ndi zitsulo zamtengo wapatali ndi aloyi ya aluminiyamu, zinthu zosiyanasiyana zopanda zitsulo. Zida zopangira zida za valve ziyenera kusankhidwa molingana ndi izi: 1, kuthamanga kwapakati, kutentha ndi mawonekedwe. 2, mphamvu yonyamulira zigawozo ndipo nthawi zambiri zimagwira ntchito pamapangidwe a valve. 3. Kuchita bwino kwa ndondomeko. 4. Pansi pa zomwe zili pamwambazi, mtengo wotsika umafunika. Zida zopangira mafuta ozungulira mbale, valavu imodzi yothamanga ndi mbale ya valve (pistoni valve) mbale yozungulira ya mafuta, valve yothamanga imodzi ndi valve valve (pistoni valve) ndi imodzi mwa zigawo zofunika kwambiri za valve, nthawi yomweyo ganizirani kuthamanga kwapakati, komwe kumagwiritsidwa ntchito zopangira ziyenera kukwaniritsa zofunikira za "valve pressure ndi kutentha kwa msinkhu". Zida wamba kugwa m'magulu awa: 1, imvi kuponyedwa chitsulo: imvi kuponyedwa chitsulo ndi oyenera kuthamanga mwadzina PN≤1.0MPa, kutentha -10 ℃ ~ 200 ℃ madzi, nthunzi, mpweya, liquefied mpweya ndi woyengedwa mafuta ndi TV zina. Gray cast iron iron common grade: HT200, HT250, HT300, HT350. Awiri, malleable chitsulo: oyenera kuthamanga mwadzina PN≤2.5MPa, kutentha -30 ~ 300 ℃ madzi, nthunzi, mpweya ndi sing'anga mafuta, zopangidwa wamba ndi: KTH300-06, KTH330-08, KTH350-10. Atatu, ductile kuponyera: oyenera PN≤4.0MPa, kutentha -30 ~ 350 ℃ madzi, nthunzi, gasi ndi mafuta ndi TV zina. Mitundu yodziwika bwino ndi: QT400 -- 15, QT450 -- 10, QT500 -- 7. Chifukwa cha luso lamakono lamakono la dziko lathu, mafakitale ndi abwino ndipo ena ndi oipa ndipo makasitomala ndi ovuta kuwazindikira. Malinga ndi zomwe zachitika, akuti PN≤2.5MPa, valavu kapena valavu yachitsulo imasankhidwa kuti ikhale yotetezeka. Zinayi, kukana asidi mkulu pakachitsulo ductile kuponyera: oyenera kuthamanga mwadzina PN≤0.25MPa, kutentha zosakwana 120 ℃ sing'anga zikuwononga. Zisanu, mpweya zitsulo: oyenera kuthamanga mwadzina PN≤32.0MPa, kutentha -30 ~ 425 ℃ madzi, nthunzi, mpweya, haidrojeni, ammonia, nayitrogeni ndi mafuta mafuta ndi TV zina. kalasi Common ndi WC1, WCB, ZG25 ndi khalidwe zitsulo 20, 25, 30 ndi otsika aloyi zitsulo 16Mn. Vi. Aloyi zakuthupi: Oyenera PN≤2.5MPa madzi, nyanja, O2, gasi, mafuta ndi TV zina, ndi kutentha kwa -40 ~ 50 ℃ nthunzi sing'anga, zopangidwa wamba ndi ZGnSn10Zn2 (malata mkuwa), H62, HPB59-1 (wofiira mkuwa), Qaz19-2, Qa19-4 (aluminiyamu bronze). Zisanu ndi ziwiri, kutentha kosalekeza mkuwa: oyenera kuthamanga mwadzina PN≤17.0MPA, kutentha ≤570 ℃ nthunzi Kutentha ndi mafuta mafuta. Mtundu wamba uli ndi ZGCr5Mo, 1 cr5m0. ZG20CrMoV, ZG15Gr1Mo1V, 12 crmov WC6, WC9, etc. Kugwiritsa ntchito kwenikweni kuyenera kukhala molingana ndi kuthamanga kwa valve ndi kutentha kwa kutentha. Eyiti, otsika kutentha zitsulo, oyenera kuthamanga mwadzina PN≤6.4Mpa, kutentha ≥ -196 ℃ butadiene, pe, madzi gasi, madzi asafe ndi TV zina, zopangidwa wamba) ndi ZG1Cr18Ni9, 0Cr18Ni9, 1Cr18Ni9Ti, ZG0Cr18 Ni9 Tilibe asidi Nineant, stain zitsulo, oyenera kuthamanga mwadzina PN≤6.4Mpa, kutentha ≤200 ℃ sodium cyanide, acetic acid ndi TV zina, zopangidwa wamba ndi ZG0Cr18Ni9Ti, ZG0Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, asidi kukana ndi urea njira The awiri chomaliza m'mimba mwake cholakwa chimbale ndi traging kulamulidwa chifukwa cha m'lifupi ndi m'mphepete mapindikidwe a mkuwa ndi aloyi zitsulo castings valavu zopangira, kotero palibe kulolerana dimensional chofunika. Wopereka ndi kuyitanitsa kuyika zinthu zisanagulidwe, kapena kuchuluka kwa zinthu zotere zomwe zimaphatikizidwa ndi makina otsala. Ziboliboli zomwe zimayambitsidwa ndi m'mphepete mwake, kubowola, makina okhomerera, kapena kudutsa cholozera chakufa kumaloledwa bola zitachotsedwa pakupanga makina kapena sizikuvulaza kukhalabe zomwe zamalizidwa (G1,G2,G3, ndi G4 mu FIG 9). Chojambulacho chiyenera kusonyeza kuti m'mphepete mwake sayenera kupitirira 1.5 mm Kulumikiza: Kuponyedwa kwazitsulo zamkuwa ndi aloyi pazitsulo zopangira valavu (II) Zolakwika zazikulu mkati ndi kudutsa kufa - mizere yolekanitsa Gulu loyamba lazinthu, ndondomeko, ndi t ziyenera kugwirizana ndi mitundu yopatuka yoperekedwa mu Gulu 14, pomwe gulu lazinthu zopangira Ⅱ liyenera kugwirizana ndi Table 15, gulu lazinthu zopangira Ⅲ Mafotokozedwe okulirapo a calcination Angle, tmax, ndiye gawo loyambira la kulolerana komwe kulipo kudutsa mulingo wolekanitsa. Cholakwika cha tmax chagona m'dera lachitukuko A la Angle yolimba ya gawolo. Pankhani ya zigawo za annular, malo onse A ndi ofanana ndi dera la A; pazigawo zosagwirizana, malo onse A ndi ofanana ndi malo a rectangle odulidwa kunja (onani Chithunzi 4). Mafotokozedwe ang'onoang'ono onse ali ndi cholakwika chofanana ndi tmax.