Izikhali zezikhali zokushisela ezitholakalayo zokulwa nomsebenzi wokulungisa izinsimbi ziye zakhula ngokuphawulekayo phakathi neminyaka edlule, kuhlanganise nohlu lwabashiseli bezinhlamvu.
Uma ungaphezu kweminyaka engama-50, kungenzeka ukuthi ufunde ukushisela ngomshini wokushisela we-SMAW (Shielded Metal Arc noma Electrode).
Iminyaka yawo-1990 yasilethela ukushisela kwe-MIG (metal inert gas) noma i-FCAW (flux-cored arc welding) yokushisela, okwabangela ukuthi ama-buzzer amaningi ayeke.Muva nje, ubuchwepheshe be-TIG (i-tungsten inert gas) sebungene ezitolo zezolimo njengendlela ekahle yokuhlanganisa insimbi, i-aluminium nensimbi engagqwali.
Ukuthandwa okukhulayo kwama-welder anezinjongo eziningi manje kusho ukuthi zonke izinqubo ezine zingasetshenziswa ephaketheni elilodwa.
Ngezansi kunezifundo ezimfushane zokushisela ezizothuthukisa amakhono akho ukuze uthole imiphumela ethembekile, kungakhathaliseki ukuthi usebenzisa yiphi inqubo yokushisela.
UJody Collier unikele umsebenzi wakhe ekuqeqesheni ukushisela nokushisela.Amawebhusayithi akhe Weldingtipsandtricks.com kanye Welding-TV.com agcwele amathiphu asebenzayo namasu azo zonke izinhlobo zokushisela.
Igesi ekhethwayo ye-MIG yokushisela i-carbon dioxide (CO2).Nakuba i-CO2 iyonga futhi ilungele ukudala amashisela okungena ajulile ezinsimbi eziwugqinsi, le gesi evikelayo ingashisa kakhulu uma kushiselwa izinsimbi ezizacile.Kungakho uJody Collier encoma ukushintshela kwingxube ka-75% ye-argon no-25% we-carbon dioxide.
"O, ungasebenzisa i-argon ehlanzekile ku-MIG weld aluminium noma insimbi, kodwa kuphela izinto ezincane kakhulu," esho."Yonke enye into iboshwe kabi nge-argon emsulwa."
U-Collier uphawula ukuthi kunezingxube eziningi zegesi emakethe, njenge-helium-argon-CO2, kodwa ngezinye izikhathi kunzima ukuzithola futhi kuyabiza.
Uma ulungisa insimbi engagqwali epulazini, uzodinga ukungeza izingxube ezimbili ze-argon engu-100% noma i-argon ne-helium yokushisela i-aluminium kanye nengxube ye-argon engu-90%, i-7.5% ye-helium no-2.5% we-carbon dioxide.
I-permeability ye-MIG weld incike kwigesi evikelayo.I-Carbon dioxide (phezulu kwesokudla) ihlinzeka nge-welding yokungena ejulile uma iqhathaniswa ne-argon-CO2 (phezulu kwesokunxele).
Ngaphambi kokufaka i-arcing lapho ulungisa i-aluminium, qiniseka ukuthi uhlanza kahle i-weld ukugwema ukucekela phansi i-weld.
Ukuhlanza i-weld kubalulekile ngoba i-alumina incibilika ku-3700°F futhi izinsimbi eziyisisekelo zincibilika ku-1200°F.Ngakho-ke, noma iyiphi i-oxide (i-oxidation noma i-corrosion emhlophe) noma amafutha endaweni elungisiwe izovimbela ukungena kwensimbi yokugcwalisa.
Ukususwa kwamafutha kuza kuqala.Khona-ke, futhi ngemva kwalokho, kufanele kususwe ukungcoliswa kwe-oxidative.Ungalishintshi i-oda, kuxwayisa u-Joel Otter we-Miller Electric.
Ngokukhula kokuthandwa kwemishini yokushisela izintambo ngeminyaka yawo-1990, abashiseli bezidleke ezizamekile futhi beqiniso baphoqeleka ukuthi baqoqe uthuli emakhoneni ezitolo.
Ngokungafani nalawo ma-buzzer amadala ayesetshenziswa kuphela ukushintshanisa ukusebenza kwamanje (AC), abashiseli besimanje basebenza kukho kokubili ukushintshana kwamanje kanye namanje okuqondile (DC), beshintsha i-polarity yokushisela izikhathi ezingu-120 ngomzuzwana.
Izinzuzo ezilethwa yilolu shintsho olusheshayo lwe-polarity zinkulu, okuhlanganisa ukuqala okulula, ukunamathela kancane, isipatshi esincane, amashisela akhanga kakhudlwana, kanye nokushisela okulula okuma mpo nangaphezulu.
Kuhlanganiswe neqiniso lokuthi i-stick welding ikhiqiza ama-weld ajulile, ilungele umsebenzi wangaphandle (i-MIG shielding gas ishaywa umoya), isebenza ngokuphumelelayo ngezinto eziwugqinsi, futhi iyasha ngokugqwala, ukungcola, nopende.Imishini yokushisela nayo iyaphatheka futhi kulula ukuyisebenzisa, ukuze ukwazi ukubona ukuthi kungani i-electrode entsha noma umshini wokushisela we-multi-processor ufanele ukutshalwa kwezimali.
UJoel Orth weMiller Electric unikeza izikhombisi ezilandelayo ze-electrode.Ukuze uthole ulwazi olwengeziwe vakashela: millerwelds.com/resources/welding-guides/stick-welding-guide/stick-welding-tips.
Igesi yeHydrojeni iyingozi enkulu yokushisela, edala ukubambezeleka kokushisela, ukuqhekeka kwe-HAZ okwenzeka amahora noma izinsuku ngemuva kokuqedwa kokushisela, noma kokubili.
Nokho, usongo lwe-hydrogen ngokuvamile luqedwa kalula ngokuhlanza insimbi kahle.Isusa uwoyela, ukugqwala, upende nanoma yimuphi umswakama njengoba iwumthombo we-hydrogen.
Nokho, i-hydrogen isalokhu iwusongo lapho ishisela insimbi enamandla amakhulu (esetshenziswa ngokwandayo emishinini yesimanje yezolimo), amaphrofayili ensimbi aminyene, nasezindaweni zokushisela ezinemingcele kakhulu.Lapho ulungisa lezi zinto, qiniseka ukuthi usebenzisa i-electrode ephansi ye-hydrogen futhi ushise kuqala indawo yokushisela.
U-Jody Collier uveza ukuthi izimbobo eziyisiponji noma amabhamuza omoya amancane avela endaweni yokushisela kuwuphawu oluqinisekile lokuthi i-weld yakho inokuvuvukala, okubheka njengenkinga yokuqala yokushisela.
I-weld porosity ingathatha izinhlobo eziningi, okuhlanganisa izimbotshana ezingaphezulu, ama-wormholes, ama-crater, nama-cavities, abonakalayo (phezulu) futhi angabonakali (ekujuleni kwe-weld).
UCollier uyeluleka futhi, “Vumela idamu lihlale lincibilikile isikhathi eside, livumele igesi ukuthi ibile iphume endaweni yokushisela ngaphambi kokuba iqhwa.”
Nakuba amadayamitha ocingo ajwayeleke kakhulu angama-intshi angu-0.035 no-0.045, intambo encane yobubanzi yenza kube lula ukwakha i-weld enhle.U-Carl Huss we-Lincoln Electric uncoma ukusebenzisa intambo engu-0.025″, ikakhulukazi uma ushisela izinto ezizacile ezingu-1/8″ noma ngaphansi.
Wachaza ukuthi abashiseli abaningi bavame ukwenza ama-welds amakhulu kakhulu, okungaholela ekushiseni.Intambo yobubanzi obuncane ihlinzeka ngokushisela okuzinzile endaweni yamanje ephansi okwenza kungabi lula ukuvutha.
Qaphela uma usebenzisa le ndlela ezintweni eziwugqinsi (3⁄16″ futhi ugqinsi), njengoba 0.025″ intambo yobubanzi ingase ibangele ukuncibilika okwanele.
Uma nje iphupho lifezekile kubalimi abafuna indlela engcono yokushisela izinsimbi ezincane, i-aluminium nensimbi engagqwali, amashisela e-TIG avame kakhulu ezitolo zasemapulazini ngenxa yokuthandwa okukhulayo kwama-multi-processor welder.
Nokho, ngokusekelwe kokuhlangenwe nakho komuntu siqu, ukufunda ukushisela i-TIG akulula njengokufunda ukushisela i-MIG.
I-TIG idinga izandla zombili (eyodwa ukubamba umthombo wokushisa ku-electrode ye-tungsten eshisayo elangeni, enye ukondla induku yokugcwalisa ku-arc) nonyawo olulodwa (ukusebenzisa i-pedal yonyawo noma isilawuli samanje esifakwe kuthoshi) Ukusebenzisana kwezindlela ezintathu kusetshenziselwa ukuqala, ukulungisa nokumisa ukugeleza kwamanje).
Ukuze ugweme imiphumela efana neyami, abaqalayo kanye nalabo abafuna ukucija amakhono abo bangasebenzisa lezi zeluleko zokushisela ze-TIG, ngamazwi ka-Miller Electric consultant Ron Covell, Amathiphu Welding: Imfihlo Yempumelelo Ye-TIG Welding.
Ikusasa: Libazisa okungenani imizuzu eyi-10.Ulwazi lunikezwa “njengoba lunjalo” ngezinjongo zokwaziswa kuphela hhayi ngezinjongo zokuhweba noma izincomo.Ukuze ubuke konke ukubambezeleka kokushintshanisa nemibandela yokusebenzisa, bona okuthi https://www.barchart.com/solutions/terms.