Momwe mungasankhire zida zowotcherera za mavavu?

Kuwotcherera kumagwiritsidwa ntchito kwambiri pakuwotcherera kwa ma valve osindikiza pamwamba, kukonza kuwotcherera kwa zolakwika zoponyera ndi kuwotcherera komwe kumafunikira malinga ndi kapangidwe kazinthu. Kusankhidwa kwa zipangizo zowotcherera kumagwirizana ndi njira zake. Zida zomwe zimagwiritsidwa ntchito powotcherera arc electrode, kuwotcherera kwa plasma arc, kuwotcherera arc pansi pamadzi ndi mpweya wotetezedwa wa carbon dioxide ndizosiyana. Njira yowotcherera yomwe imagwiritsidwa ntchito kwambiri komanso yomwe imagwiritsidwa ntchito kwambiri ndi zida zosiyanasiyana zomwe zimagwiritsidwa ntchito powotcherera arc electrode. 01 Zofunikira pa zowotcherera valavu Vavu ndi chinthu chapaipi chokakamiza. Mlingo wa luso ndi kuwotcherera kwa wowotcherera kumakhudza mwachindunji mawonekedwe azinthu ndi kupanga chitetezo, chifukwa chake ndikofunikira kwambiri kuti wowotchererayo azifunikira. Kuwotcherera ndi njira yapadera mu bizinesi yopanga valavu, ndipo payenera kukhala njira yapadera ya ndondomeko yapadera, kuphatikizapo kasamalidwe ndi kulamulira kwa ogwira ntchito, zipangizo, ndondomeko ndi zipangizo. Wowotchererayo adzapereka chidziwitso choyambira ndikuwunika kwenikweni kwa mayeso olondola a zowotcherera zowotcherera ndi zowotcherera, kukhala ndi satifiketi (satifiketi), ndipo amatha kuchita nawo ntchito zowotcherera mkati mwa nthawi yovomerezeka. 02 Zofunikira posungira ma electrode a valve 1) Samalani ndi chinyezi chozungulira kuti muteteze ndodo yowotcherera kuti isakhale yonyowa. Chinyezi chomwe chili mumlengalenga chiyenera kukhala chosakwana 60% ndi mtunda wina kuchokera pansi kapena khoma. 2) Kusiyanitsa chitsanzo cha kuwotcherera ndodo ndipo mfundo sizidzasokonezedwa. 3) Pa zoyendera ndi stacking, tcherani khutu kuwononga ❖ kuyanika, makamaka zosapanga dzimbiri maelekitirodi, electrode pamwamba ndi chitsulo choponyedwa electrode. 03 Kukonza kuwotcherera kwa ma valve 1) Kukonza kuwotcherera kumaloledwa kuponyedwa kwa ma valve ndi kuphatikizika kwa mchenga, ming'alu, dzenje la mpweya, dzenje la mchenga, kutayirira ndi zolakwika zina, koma banga la mafuta, dzimbiri, chinyezi ndi zolakwika ziyenera kuchotsedwa musanayambe kukonza. Mukachotsa zolakwikazo, pukutani zitsulo zonyezimira ndi sandpaper. Maonekedwe ake ayenera kukhala osalala, okhala ndi malo otsetsereka komanso opanda m'mbali zakuthwa. Ngati ndi kotheka, kulamulira kosawononga kudzachitika ndi ufa kapena kulowa kwamadzimadzi, ndipo kukonza kuwotcherera kungathe kuchitika pokhapokha ngati palibe cholakwika. 2) Kukonza kuwotcherera sikuloledwa ngati pali ming'alu yolowera kwambiri, zotsekera ozizira, pores zisa, madera akuluakulu a porosity pazitsulo zonyamula zitsulo, ndipo palibe zolakwika zomwe ziyenera kuchotsedwa kapena zigawo zomwe sizingakonzedwe ndikupukutidwa pambuyo pokonza. kuwotcherera. 3) Chiwerengero cha mobwerezabwereza kuwotcherera kukonza pambuyo kutayikira chiyeso cha kuthamanga kubala zitsulo kuponyera chipolopolo si upambana kawiri. 4) Kuponyera kuyenera kupukutidwa kosalala komanso kosalala pambuyo pokonza kuwotcherera, ndipo palibe njira yodziwikiratu yokonza kuwotcherera yomwe idzasiyidwe. 5) Zofunikira za NDT za castings pambuyo pa kukonza zowotcherera zidzakhazikitsidwa molingana ndi miyezo yoyenera. 04 Chithandizo cha kupsinjika kwa ma valve mutatha kuwotcherera 1) Zopangira zowotcherera zofunika, monga kuwotcherera kwa jekete yotenthetsera yotenthetsera, chowotcherera cha mpando wa valavu wophatikizidwa pathupi la valavu, malo osindikizira omwe amafunikira chithandizo chowotcherera positi, komanso kukonza kuwotcherera kwa kukakamiza castings opitilira muyeso wotchulidwa, kupsinjika kwa kuwotcherera kudzathetsedwa pambuyo pakuwotcherera. Ngati n'zosatheka kulowa m'ng'anjo, njira yothetsera mavuto a m'deralo ingatengedwenso. Njira yochotsera kupsinjika kwa kuwotcherera imatha kutanthauza buku la ndodo yowotcherera. 2) The kuwotcherera maganizo adzathetsedwa pambuyo kuwotcherera ngati kuwotcherera kukonza kuya kuposa 20% ya makulidwe khoma kapena 25mm kapena dera lalikulu kuposa 65C ㎡ ndi kutayikira chipolopolo mayeso. 05 Kuyenerera kwa ndondomeko yowotcherera ma valve Kusankhidwa koyenera kwa ndodo yowotcherera ndi chinthu chofunika kwambiri pakupanga njira yapadera yowotcherera. Ndi kusankha kolondola kwa ndodo yowotcherera. Popanda chitsimikizo cha nkhani zam'mbuyomu, ndizosatheka kupeza mtundu wabwino wa kuwotcherera. Popeza kuwotcherera khalidwe la elekitirodi arc kuwotcherera ndi wosiyana ndi magawo ofunika otchulidwa khalidwe elekitirodi palokha, m'mimba mwake elekitirodi, m'munsi zitsulo, makulidwe a zitsulo m'munsi, weld udindo, preheating kutentha ndi anatengera panopa, tcherani khutu kusintha kwa izi. zofunika magawo. Pazinthu za mavavu, kuyenerera kwa njira yowotcherera kumaphatikizapo kutchingira pamwamba, kuwotcherera kwa mpando wa valve ndi thupi la valve ndi kukonza kuwotcherera kwa magawo opanikizika. Panjira zinazake zoyenereza, chonde onani gawo la ASME IX kuwotcherera ndi kuyenerera kwa brazing ndi muyezo wamakampani aku China JB / T 6963 kuyenerera kwa magawo azitsulo.