1 Bayani
Manyan jiragen ruwa na kwantena suna da halaye irin su babban tsayi, ƙarfin kwantena, babban gudu, da manyan buɗewa, wanda ke haifar da babban matakin damuwa a tsakiyar yanki na tsarin hull. Sabili da haka, ana amfani da kayan ƙarfe mai girma mai girma mai girma a cikin ƙira.
A matsayin hanyar walƙiya mai inganci, ana amfani da walda mai iskar gas a tsaye (EGW). Duk da haka, gabaɗaya matsakaicin matsakaicin kauri farantin zai iya kaiwa 32 ~ 33mm, kuma ba za a iya amfani da shi akan manyan faranti masu kauri da aka ambata a sama ba;
Matsakaicin kauri mai kauri na hanyar EGW mai waya biyu gabaɗaya ya kai kusan 70mm. Duk da haka, saboda shigarwar zafin walda yana da girma sosai, don tabbatar da cewa aikin haɗin gwiwar da aka haɗa ya dace da ƙayyadaddun buƙatun, dole ne a yi amfani da farantin karfe wanda ya dace da babban ƙarfin shigar da wutar lantarki.
Sabili da haka, ba tare da amfani da faranti na welded waɗanda za su iya daidaitawa zuwa babban shigarwar zafi ba, walƙiya na tsaye na manyan faranti masu kauri za su iya amfani da walda mai yawa na FCAW Multi-Layer Multi-pass, kuma ingancin walda yana da ƙasa.
Wannan hanyar ita ce hanyar FCAW + EGW haɗe ta hanyar walda wanda aka haɓaka bisa ga halaye na sama waɗanda ba za su iya amfani da EGW kawai zuwa walda na manyan faranti masu kauri ba, ba da cikakkiyar wasa ga fa'idodin ingancinsa, amma kuma daidaitawa da halayen ainihin faranti na ƙarfe. . Wato ingantacciyar hanyar walda wacce ke amfani da walda mai gefe ɗaya ta FCAW akan farfajiyar tsarin don cimma ƙirar baya, sannan kuma tana yin walda ta EGW akan farfajiyar da ba ta tsari ba.
Kayan aikin walda na Xinfa yana da halaye masu inganci da ƙarancin farashi. Don cikakkun bayanai, da fatan za a ziyarci:Welding & Yanke Manufacturers - China Welding & Yanke masana'anta & Suppliers (xinfatools.com)
2 Maɓalli na FCAW+EGW haɗewar hanyar walda
(1) Kaurin farantin da ake buƙata
34 ~ 80mm: Wato, ƙananan iyaka shine babban iyaka na kauri mai kauri don monofilament EGW; Amma ga babba, a halin yanzu babban jirgin ruwa yana amfani da faranti na ƙarfe masu kauri don gefen ciki da manyan faranti na harsashi. Idan aka yi la'akari da cewa kauri na farantin karfe na samfurori daban-daban ya bambanta, an ƙaddara ya zama 80mm.
(2) Rabon kauri
Ka'idar rarraba kauri na walda shine don ba da cikakkiyar wasa ga babban fa'idar walda na EGW; a lokaci guda, dole ne mu yi la'akari da cewa adadin walda da aka ajiye tsakanin hanyoyin biyu dole ne ya bambanta da yawa, in ba haka ba zai yi wahala a sarrafa nakasar walda.
(3) Haɗaɗɗen hanyar walda ta hanyar haɗin gwiwa
① Tsagi kusurwa: Domin kauce wa tsagi nisa zama ma girma a kan FCAW gefe, da tsagi ne daidai karami fiye da na al'ada FCAW guda-gefe waldi tsagi, wanda yake daban-daban farantin kauri bukatar daban-daban bevel kwana. Lokacin da farantin kauri ne 30 ~ 50mm, shi ne Y± 5 °, da kuma lokacin da farantin kauri ne 51 ~ 80mm, shi ne Z± 5 °.
② Tushen tazara: Yana buƙatar daidaitawa da buƙatun aiwatar da hanyoyin walda biyu a lokaci guda, wato G± 2mm.
③Shafin gasket ɗin da za a iya amfani da shi: Gaskets triangular na al'ada ba za su iya biyan buƙatun sigar haɗin gwiwa na sama ba saboda matsalolin kusurwa. Wannan hadadden hanyar walda yana buƙatar yin amfani da gaskets na zagaye. Ana buƙatar zaɓar girman diamita bisa ainihin ƙimar tazarar taro (duba Hoto 1).
(4) Basic wuraren gina walda
① Horon walda. Masu aiki suna buƙatar yin ɗan lokaci na horo. Ko da ma'aikata da gwaninta a EGW (SG-2 hanya) waldi na talakawa kauri karfe faranti dole ne sha horo, saboda aiki ƙungiyoyi na waldi waya a cikin narkakkar pool ne daban-daban a lokacin da walda bakin ciki faranti da kuma manyan lokacin farin ciki faranti.
② Ƙarshen ganowa. Gwajin mara lalacewa (RT ko UT) dole ne a yi amfani da shi a ƙarshen walda da sashin tsayawar baka don bincika lahani da tabbatar da girman lahani. Ana amfani da gouging don cire lahani, kuma ana amfani da hanyoyin walda FCAW ko SMAW don sake yin walda.
③Arc farantin karfe. Tsawon faranti mai ɗaukar baka dole ne ya zama aƙalla 50mm. Farantin mai ɗaukar baka da kayan tushe suna da kauri iri ɗaya kuma suna da tsagi iri ɗaya. ④ A lokacin walda, iska za ta haifar da rashin tsaro na iskar gas, haifar da lahani a cikin walda, kuma kutsen nitrogen a cikin iska zai haifar da rashin aikin haɗin gwiwa, don haka dole ne a dauki matakan kariya na iska.
3 Tsarin gwaji da yarda
(1) Kayan gwaji
Ana nuna faranti na gwaji da kayan walda a cikin Table 1
(2) Alamar walda
Matsayin walda shine 3G, kuma ana nuna takamaiman sigogin walda a cikin Table 2.
(3) Sakamakon gwaji
An gudanar da gwajin bisa ga ka'idojin jirgin ruwa na LR da CCS da kuma ƙarƙashin kulawar wurin da mai binciken. Sakamakon kamar haka.
NDT da sakamako: Sakamakon PT shine cewa gefuna na gaba da baya waldi suna da kyau, saman yana da santsi, kuma babu lahani na sama; Sakamakon UT shine cewa duk welds sun cancanta bayan gwajin ultrasonic (gamuwa da ISO 5817 matakin B); Sakamakon MT shine cewa gaba da baya welds gano aibi na maganadisu ne Bayan dubawa, babu lahani na walda.
(4) Yarda da ƙarshe
Bayan an gudanar da gwajin NDT da kaddarorin inji akan gwajin welded gidajen abinci, sakamakon ya cika buƙatun ƙayyadaddun ƙayyadaddun jama'a kuma sun wuce amincewar tsarin.
(5) Kwatancen inganci
Ɗaukar weld mai tsayin mita 1 na wani faranti a matsayin misali, lokacin walda da ake buƙata don waldawar FCAW mai fuska biyu shine mintuna 250; Lokacin amfani da hanyar walda, lokacin walda da ake buƙata don EGW shine mintuna 18, lokacin waldawar da ake buƙata don FCAW shine mintuna 125, kuma jimlar lokacin walda shine mintuna 143. Haɗin hanyar walda yana adana kusan kashi 43% na lokacin walda idan aka kwatanta da ainihin walƙiyar FCAW mai fuska biyu.
4 Kammalawa
Hanyar haɗin walda ta FCAW+EGW da aka haɓaka ta gwaji ba kawai tana ɗaukar cikakkiyar fa'ida daga ingantaccen walƙiya na EGW ba, har ma ya dace da halayen faranti na ƙarfe na yanzu. Yana da wani sabon waldi tsari fasaha tare da high waldi yadda ya dace da high yiwuwa.
A matsayin sabuwar fasahar tsarin walda, samar da tsagi, daidaiton taro, zaɓin kayan abu, sigogin walda, da sauransu suna da mahimmanci kuma dole ne a sarrafa su sosai yayin aiwatarwa.
Lokacin aikawa: Fabrairu-22-2024
