I-arsenal ye-welding arsenals ekhoyo ukulwa nomsebenzi wokulungisa isinyithi iye yanda ngokukhawuleza kwiminyaka, kubandakanywa noluhlu lwe-alfabhethi ye-welder.
Ukuba ungaphezulu kwe-50, mhlawumbi ufunde indlela yokuwelda nge-SMAW (iShielded Metal Arc okanye i-Electrode) umatshini wokuwelda.
Iminyaka yee-1990 yasizisela i-MIG (i-metal inert gas) okanye i-FCAW (i-flux-cored arc welding) i-welding, eyabangela ukuba i-buzzers ezininzi zithathe umhlalaphantsi.Ngoku kutshanje, iteknoloji ye-TIG (i-tungsten inert gas) iye yangena kwiivenkile zezolimo njengendlela efanelekileyo yokudibanisa i-sheet metal, i-aluminium kunye nensimbi engenasici.
Ukuthandwa okukhulayo kwee-welders ezisetyenziselwa iinjongo ezininzi ngoku kuthetha ukuba zonke iinkqubo ezine zingasetyenziswa kwiphakheji enye.
Ngezantsi kukho iikhosi ezimfutshane ze-welding eziya kuphucula izakhono zakho kwiziphumo ezithembekileyo, kungakhathaliseki ukuba yeyiphi inkqubo ye-welding oyisebenzisayo.
UJody Collier uye wanikela umsebenzi wakhe kwi-welding kunye noqeqesho lwe-welder.Iiwebhusayithi zakhe i-Weldingtipsandtricks.com kunye ne-Welding-TV.com zizaliswe ngeengcebiso ezisebenzayo kunye namaqhinga azo zonke iintlobo ze-welding.
Irhasi ekhethiweyo ye-MIG welding yi-carbon dioxide (CO2).Nangona i-CO2 inoqoqosho kwaye ifanelekile ekudaleni i-welds yokungena enzulu kwiintsimbi ezityebileyo, le gesi ekhuselayo inokutshisa kakhulu xa udibanisa iintsimbi ezibhityileyo.Yingakho u-Jody Collier encoma ukutshintshela kumxube we-75% ye-argon kunye ne-25% ye-carbon dioxide.
"Owu, ungasebenzisa i-argon ecocekileyo kwi-MIG weld aluminiyam okanye intsimbi, kodwa kuphela izinto ezincinci," watsho."Yonke enye into idityaniswe ngokugqithisileyo nge-argon ecocekileyo."
I-Collier iphawula ukuba kukho imixube yegesi emininzi kwimarike, njenge-helium-argon-CO2, kodwa ngamanye amaxesha kunzima ukuyifumana kwaye kuyabiza.
Ukuba ulungisa insimbi engenasici kwifama, kuya kufuneka udibanise imixube emibini ye-argon ye-100% okanye i-argon kunye ne-helium ye-aluminium ye-welding kunye nomxube we-90% ye-argon, i-7.5% ye-helium kunye ne-2.5% ye-carbon dioxide.
I-permeability ye-MIG weld ixhomekeke kwigesi yokukhusela.Ikhabhon dayoksayidi (phezulu ekunene) ibonelela ngewelding yokungena enzulu xa kuthelekiswa neargon-CO2 (phezulu ekhohlo).
Ngaphambi kokuba u-arcing xa ulungisa i-aluminium, qiniseka ukuba ucoce ngokucokisekileyo i-weld ukuphepha ukutshabalalisa i-weld.
Ukucoca i-weld kubalulekile kuba i-alumina inyibilika kwi-3700 ° F kwaye isiseko sesinyithi sinyibilika kwi-1200 ° F.Ngoko ke, nayiphi na i-oxide (i-oxidation okanye i-corrosion emhlophe) okanye ioli kwindawo elungisiweyo iya kuthintela ukungena kwentsimbi yokuzalisa.
Ukususwa kwamafutha kuza kuqala.Emva koko, kwaye kuphela emva koko, kufuneka kususwe ungcoliseko lwe-oxidative.Musa ukutshintsha iodolo, ilumkisa Joel Otter of Miller Electric.
Ngokunyuka kokuthandwa koomatshini bokuwelda ngocingo kwiminyaka yoo-1990, abashicileli beehive baphoqeleka ukuba baqokelele uthuli kwiikona zeevenkile.
Ngokungafaniyo nezo buzzers ezindala ezazisetyenziselwa kuphela ukutshintshiselana kwangoku (AC) imisebenzi, i-welders yanamhlanje isebenza kuzo zombini i-current and direct current (DC), itshintsha i-welding polarity amaxesha angama-120 ngomzuzwana.
Izibonelelo ezibonelelwa ngolu tshintsho lukhawulezayo lwepolarity zikhulu, kubandakanywa ukuqala okulula, ukuncamathela kancinci, ukutshiza okuncinci, iiweld ezinomtsalane ngakumbi, kunye nokuwelda okuthe nkqo nokungaphezulu.
Idityaniswe nenyaniso yokuba ukuwelda ngentonga kuvelisa i-welds enzulu, ilungile kumsebenzi wangaphandle (igesi ye-MIG yokukhusela ibethwa ngumoya), isebenza ngokufanelekileyo ngezinto ezishinyeneyo, kwaye itshisa ngomhlwa, ukungcola, kunye nepeyinti.Oomatshini be-welding nabo bayaphatheka kwaye kulula ukuyisebenzisa, ngoko unokubona ukuba kutheni i-electrode entsha okanye i-multi-processor welding machine ixabisa utyalo-mali.
UJoel Orth weMiller Electric unikezela ngezikhombisi ezilandelayo ze-electrode.Ukuze ufumane inkcazelo engakumbi, tyelela: millerwelds.com/resources/welding-guides/stick-welding-guide/stick-welding-tips.
Irhasi yeHydrojeni yingozi enkulu ye-welding, ebangela ukulibaziseka kwe-welding, ukuqhekeka kwe-HAZ okwenzeka iiyure okanye iintsuku emva kokugqitywa kwe-welding, okanye zombini.
Nangona kunjalo, isoyikiso se-hydrogen sihlala sipheliswa ngokulula ngokucoca ngokucokisekileyo isinyithi.Isusa ioyile, umhlwa, ipeyinti kunye naluphi na ukufuma njengoko zingumthombo wehydrogen.
Nangona kunjalo, i-hydrogen ihlala isisoyikiso xa iwelding intsimbi yokuqina okuphezulu (isetyenziswa kakhulu kwizixhobo zezolimo zanamhlanje), iiprofayili zetsimbi ezishinyeneyo, nakwiindawo ezithintelweyo kakhulu zokuwelda.Xa ulungisa ezi zixhobo, qiniseka ukusebenzisa i-electrode ephantsi ye-hydrogen kwaye uqalise ukufudumala indawo ye-weld.
U-Jody Collier ubonisa ukuba imingxunya ene-spongy okanye amaqamza amancinci avela kumphezulu we-weld luphawu oluqinisekileyo lokuba i-weld yakho ine-porosity, ethi ithathelwe ingqalelo eyona ngxaki yokuwelda.
I-Weld porosity inokuthatha iindlela ezininzi, kubandakanywa i-surface pores, i-wormholes, i-craters, kunye ne-cavities, ebonakalayo (phezulu) kwaye ingabonakali (enzulu kwi-weld).
UCollier ukwacebisa ngelithi, “Umgxobhozo mawuhlale unyibilikile ixesha elide, nto leyo evumela igesi ukuba ibile iphuma kwi weld ngaphambi kokuba ibe ngumkhenkce.”
Ngelixa i-diameter yecingo eqhelekileyo iyi-0.035 kunye ne-0.045 intshi, i-diameter encinci yocingo yenza kube lula ukwenza i-weld efanelekileyo.UCarl Huss waseLincoln Electric ucebisa ukuba kusetyenziswe i-0.025 ″ yocingo, ngakumbi xa welding imathiriyeli ebhityileyo 1/8″ okanye ngaphantsi.
Wachaza ukuba i-welders ezininzi zivame ukwenza i-welds ezinkulu kakhulu, ezinokuthi zikhokelela ekutshiseni.Icingo elidayamitha elincinane libonelela ngeweld ezinzileyo kumhlaba osezantsi isenza ukuba kube lula ukutshisa.
Lumka xa usebenzisa le ndlela kwizinto ezityebileyo (3⁄16″ nangqindilili), njengoko 0.025″ ucingo oludayamitha lunokubangela ukunyibilika okunganelanga.
Nje ukuba iphupha libe yinyaniso kumafama akhangela indlela engcono yokuwelda iintsimbi ezicekethekileyo, i-aluminiyam kunye nentsimbi engatyiwa, iintsimbi ze-TIG ziya zixhaphake kakhulu kwiivenkile zasefama ngenxa yokukhula kokuthandwa kweentsimbi ezininzi.
Nangona kunjalo, ngokusekwe kumava obuqu, ukufunda ukuwelda kwe-TIG akulula njengokufunda ukuwelda kwe-MIG.
I-TIG idinga izandla zombini (enye ukubamba umthombo wokushisa kwi-electrode ye-tungsten yelanga, enye ukondla intonga yokuzalisa kwi-arc) kunye nonyawo olunye (ukusebenzisa i-pedal yeenyawo okanye umlawuli wangoku ofakwe kwitotshi) Ulungelelwaniso lweendlela ezintathu lusetyenziselwa ukuqala, ukulungelelanisa nokumisa ukuhamba kwangoku).
Ukuze ugweme iziphumo ezifana nezam, abaqalayo kunye nabajonge ukukhulisa izakhono zabo banokusebenzisa ezi ngcebiso ze-TIG ze-welding, ngamazwi kaMiller Electric umcebisi uRon Covell, Iingcebiso ze-Welding: Imfihlelo ye-TIG ye-Welding Success.
Ixesha elizayo: Libazise ubuncinane imizuzu eyi-10.Ulwazi lunikezelwe "njengoko lunjalo" ngeenjongo zolwazi kuphela kwaye kungekhona ngeenjongo zorhwebo okanye iingcebiso.Ukujonga lonke ulibaziseko lotshintshiselwano kunye nemigaqo yokusetyenziswa, bona https://www.barchart.com/solutions/terms.