Babu wani bambanci a cikin tsari tsakanin cikakken argon baka waldi da argon baka waldi.Cikakken welding argon ya dace da ƙananan bututun diamita na bakin ciki (yawanci DN60 da ƙasa, kauri na bango 4mm), manufar ita ce tabbatar da ingancin tushen weld da bayyanar.
Lokacin da diamita na bututu ya yi girma kuma kaurin bango ya yi kauri, yakamata a yi amfani da walda na argon a matsayin tushe da walƙiya ta hannu don rufe saman.Manufar walƙiya ta hannu shine don tabbatar da ingancin bayyanar manyan diamita na bututu da walƙiya ta hannu, kuma ingancin aikin ya fi na walƙiya na argon baka.kasa da argon baka waldi.
A argon baka waldi kasa waldi tsari da ake amfani da waldi na tukunyar jirgi ganuwar, superheaters, economizers, da dai sauransu Ingancin gidajen abinci ne m, da weld maki ne sama da Class II bayan radiographic dubawa.
Amfanin argon baka walda
(1) inganci mai kyau
Muddin an zaɓi waya mai dacewa da waldawa, sigogin tsarin walda da ingantaccen kariya na iskar gas, tushen zai iya samun shiga mai kyau, kuma shigar da shi daidai ne, kuma saman yana da santsi da tsabta.Babu wani lahani kamar ƙumburi na walda, shigar da bai cika ba, damuwa, pores da haɗaɗɗun slag waɗanda ke da sauƙin faruwa yayin waldawar baka tare da na'urorin lantarki na gaba ɗaya.
(2) Babban inganci
A cikin Layer na farko na walda na bututun, manual argon arc waldi shine ci gaba da waldawar baka.Lantarki Arc waldi ya karye waldi na baka, don haka waldawar argon baka na hannu na iya ƙara ƙarfin aiki da sau 2 zuwa 4.Tun da argon arc waldi ba ya haifar da waldawa, babu buƙatar tsaftace shinge da gyaran gyare-gyaren walda, kuma gudun zai kara sauri.A cikin na biyu Layer na baka waldi cover surface, da santsi da kuma tsabta argon baka waldi kasa Layer da amfani sosai ga baka waldi cover surface, wanda zai iya tabbatar da kyau Fusion tsakanin yadudduka, musamman a cikin waldi na kananan diamita bututu, da yadda ya dace ne mafi. mahimmanci.
(3) Mai saukin iyawa
Weld ɗin tushen walda na hannun baka dole ne a yi ta ƙwararrun ƙwararrun masu walda.Ana amfani da walda ta hannu ta hannu don goyan baya, kuma ma'aikatan da suka tsunduma cikin aikin walda za su iya ƙware sosai bayan ɗan gajeren lokaci na aiki.
(4) Karamin nakasu
Yankin da ke fama da zafi ya fi ƙanƙanta sosai a lokacin waldawar argon, don haka nakasar haɗin gwiwar welded ƙarami ne kuma ragowar damuwa kuma kaɗan ne.
Gabatarwar tsari
(1) Misalin walda
The economizer, evaporator tube dam, ruwa bango da kuma low-zazzabi superheater aka sanya daga No. 20 karfe, da kuma high-zazzabi superheater tube ne 12Cr1MoV.
(2) Shiri kafin walda
Kafin waldawa, bututu bakin ya kamata a beveled a 30°, kuma ya kamata a goge launin ƙarfe a cikin 15mm ciki da waje da ƙarshen bututu.Rata tsakanin takwarorinsu bututu shine 1 ~ 3mm.Lokacin da ainihin rata ya yi girma sosai, wajibi ne don ƙaddamar da shimfidar wuri a gefen gefen bututun farko.Kafa wuraren mafaka na wucin gadi na iska da kiyaye saurin iska a wurin aikin walda, saboda saurin iskar ya zarce wani yanki, kuma ana samun ramukan iska cikin sauƙi.
(3) Aiki
Yi amfani da injin tungsten argon arc na hannu, injin ɗin da kansa yana sanye da na'urar kunna wuta mai ƙarfi, kuma ana iya amfani da wutar lantarki mai ƙarfi.Arc extinguishing ya bambanta da waldi na baka na lantarki.Idan an kashe baka da sauri, tsagewar tsagewar baka yana da sauƙin faruwa.Don haka yayin aiki, sai a kai tafkin narkakkar zuwa gefe ko kuma karfen tushe mai kauri, sannan a dunkule tafkin da aka narkar da shi a hankali don kashe baka a hankali, sannan a rufe baka.Gas mai kariya.
Domin No. 20 karfe bututu tare da bango kauri na 3 ~ 4mm, da cika abu na iya zama TIGJ50 (na 12Cr1MoV, 08CrMoV za a iya amfani), da diamita na tungsten sanda ne 2mm, waldi halin yanzu ne 75 ~ 100A, da baka. irin ƙarfin lantarki ne 12 ~ 14V, da ya kwarara kudi na garkuwa gas ne 8 ~ 10L / min, irin wutar lantarki ne DC tabbatacce dangane.
Dalilin da yasa za'a iya amfani da waldawar argon arc don yadu shine yafi saboda fa'idodi masu zuwa.
1. Kariyar Argon na iya ware mummunan tasirin iskar oxygen, nitrogen, hydrogen, da dai sauransu a cikin iska a kan baka da narkakken tafki, rage ƙona hasara na abubuwan gami, da samun ɗimbin yawa, ba tare da ɓarna ba, haɓakar welded masu inganci;
2. Arc konewa na argon arc waldi yana da karko, zafi yana mai da hankali, zafin jiki na arc yana da girma, ingancin samar da walda yana da girma, yankin da ke fama da zafi yana kunkuntar, da damuwa, nakasawa da haɓakar haɓakar welded. sassa ƙanana ne;
3. Argon arc waldi shine budewar arc, wanda ya dace don aiki da kallo;
4. Rashin wutar lantarki yana da ƙananan, tsayin arc yana da sauƙi don kiyayewa, kuma babu juzu'i ko Layer Layer a lokacin walda, don haka yana da sauƙi don gane mechanization da aiki da kai;
5. Argon baka walda na iya walda kusan dukkan karafa, musamman ma wasu karafa masu hana ruwa gudu da kuma karafa masu saukin iskar oxygen, kamar su magnesium, titanium, molybdenum, zirconium, aluminum, da dai sauransu da alluran su;
6. Ba'a iyakance shi da matsayi na walda ba, kuma ana iya yin welded a kowane matsayi.
Babban rashin amfani:
1. Saboda da babban zafi-shafi yankin na argon baka waldi, da workpiece sau da yawa haifar da nakasawa, high taurin, blisters, gida annealing, fatattaka, pinholes, lalacewa, scratches, undercuts, ko kasa bonding karfi da ciki danniya bayan gyara.lahani kamar lalacewa.Musamman a cikin aiwatar da gyaran ƙananan lahani na simintin zuba jari, ya shahara a saman.A fagen gyaran lahani na simintin gyaran gyare-gyare, ana iya amfani da injin walda mai sanyi maimakon waldawar argon.Saboda ƙananan zafi da aka saki na injin walda mai sanyi, ƙarancin argon arc waldi yana da kyau a shawo kan matsalar, kuma an gyara matsalolin gyaran gyare-gyare na simintin gyaran gyare-gyare.
2. Argon baka walda ya fi illa ga jikin dan adam fiye da waldawar baka.Yawan waldawar argon arc na yanzu yana da girma, kuma hasken da ke fitowa yana da ƙarfi.Hasken ultraviolet da ke haifar da bakansa yana kusan na walda na baka na yau da kullun.Sau 5 zuwa 30, kuma hasken infrared kusan sau 1 zuwa 1.5 ne na waldawar baka na lantarki.Abun da ke cikin ozone da aka samar yayin walda yana da girma.Sabili da haka, yi ƙoƙarin zaɓar wurin da ke da kyaun yanayin iska don ginawa, in ba haka ba zai haifar da babbar illa ga jiki.
3. Don karafa tare da ƙarancin narkewa da sauƙi mai sauƙi (kamar gubar, tin, zinc), walƙiya ya fi wuya.
Lokacin aikawa: Agusta-16-2023