Ukusebenzisa igesi eyisivikelo engalungile noma ukugeleza kwegesi kungathinta ikhwalithi yokushisela, izindleko, nokukhiqiza kakhulu. Ukuvikela igesi kuvikela ichibi lokushisela elincibilikisiwe ekungcoleni kwangaphandle, ngakho-ke kubalulekile ukukhetha igesi efanelekile yomsebenzi.
Ukuze uthole imiphumela engcono kakhulu, kubalulekile ukwazi ukuthi yimaphi ama-gas nama-gas mixes afaneleka kakhulu ezintweni ezithile. Kufanele futhi uqaphele amathiphu ambalwa angakusiza ukuba uthuthukise ukusebenza kwegesi ekusebenzeni kwakho kokushisela, okungakongela imali.
Izinketho eziningi zegesi yokuvikela i-gas metal arc welding (GMAW) zingenza umsebenzi wenziwe. Ukukhetha igesi elungele kangcono into eyisisekelo, imodi yokudlulisa, namapharamitha wokushisela kungakusiza ukuthi uthole okuningi ekutshalweni.
Ukukhetha igesi elungele kangcono into eyisisekelo, imodi yokudlulisa, namapharamitha wokushisela kungakusiza ukuthi uthole okuningi kutshalomali lwakho.
Ukusebenza Kahle Kwegesi Yokuvikela
Ukugeleza kwegesi okufanele kanye nokumbozwa kubalulekile kusukela ngesikhathi i-arc yokushisela ishaywa. Ngokuvamile, izinkinga zokugeleza kwegesi zibonakala ngokushesha. Ungase ube nenkinga yokusungula noma ukugcina i-arc noma ukuthole kunzima ukukhiqiza amashisela ekhwalithi.
Ngaphandle kwezinkinga zekhwalithi, ukusebenza kabi kwegesi yokuvikela kungakhuphula izindleko ekusebenzeni. Izinga lokugeleza eliphakeme kakhulu, isibonelo, lisho ukuthi umosha igesi futhi uchitha imali eningi ekuvikeleni igesi kunaleyo oyidingayo.
Amazinga okugeleza aphezulu kakhulu noma aphansi kakhulu angabangela i-porosity, okudinga isikhathi sokuxazulula izinkinga nokusebenza kabusha. Amazinga okugeleza aphansi kakhulu angabangela izinkinga zokushisela ngoba i-weld pool ayivikelekile ngokwanele.
Inani le-spatter elikhiqizwa ngesikhathi sokushisela lihlobene negesi yokuvikela esetshenziswayo. I-spatter eyengeziwe isho isikhathi esiningi nemali echithwa ekugayweni kwe-postweld.
Indlela Yokukhetha I-Shielding Gas
Izinto ezimbalwa zinquma igesi elivikelayo elilungile lenqubo ye-GMAW, okuhlanganisa uhlobo lwempahla, insimbi yokugcwalisa, kanye nemodi yokudlulisa i-weld.
Uhlobo Lwezinto.Lokhu kungase kube isici esikhulu okufanele sicatshangelwe kuhlelo lokusebenza. Isibonelo, i-carbon steel ne-aluminium inezici ezihluke kakhulu ngakho-ke zidinga amagesi ahlukene okuvikela ukuze kuzuzwe imiphumela engcono kakhulu. Kufanele futhi ucabangele ukushuba kwezinto lapho ukhetha igesi evikelayo.
Uhlobo Lwensimbi Yokugcwalisa.I-filler metal ifana nesisekelo sezinto, ngakho-ke ukuqonda impahla kufanele kukunikeze umbono omuhle mayelana negesi engcono kakhulu yensimbi yokugcwalisa. Imininingwane eminingi yenqubo yokushisela ifaka imininingwane yokuthi yiziphi izingxube zegesi ezingasetshenziswa nezinsimbi ezithile zokugcwalisa.
Ukuvikela ukugeleza kwegesi okuvikelekile nokumbozwa kubalulekile kusukela ngesikhathi kushaywa i-arc yokushisela. Lo mdwebo ubonisa ukugeleza okushelelayo kwesokunxele, okuzovala i-weld pool, nokugeleza kwesiyaluyalu kwesokudla.
Imodi yokudlulisa i-Welding.Kungaba i-short-circuit, spray-arc, pulsed-arc, noma ukudluliswa kwe-globular. Imodi ngayinye ihambisana kangcono namagesi athile avikelayo. Isibonelo, akufanele neze usebenzise i-argon engu-100% ngemodi yokudlulisa isifutho. Esikhundleni salokho, sebenzisa ingxube efana ne-90% ye-argon namaphesenti angu-10 we-carbon dioxide. Izinga le-CO2 kungxube yegesi akufanele lidlule amaphesenti angama-25.
Izici ezengeziwe okufanele zicatshangelwe zifaka isivinini sohambo, uhlobo lokungena oludingekayo kujoyinti, kanye nokulinganisa ingxenye. Ingabe i-weld ayikho esimweni? Uma kunjalo, lokho kuzophinde kuthinte ukuthi iyiphi igesi yokuvikela oyikhethayo.
Izinketho Zokuvikela Igesi Ye-GMAW
I-Argon, i-helium, i-CO2, ne-oksijini amagesi avikelayo asetshenziswa kakhulu ku-GMAW. Igesi ngayinye inezinzuzo kanye nezithiyo kunoma yisiphi isicelo. Amanye amagesi afaneleka kangcono kunamanye ezintweni eziyisisekelo ezisetshenziswa kakhulu, noma ngabe i-aluminium, insimbi ethambile, insimbi ye-carbon, insimbi ye-alloy ephansi, noma insimbi engagqwali.
I-CO2 nomoya-mpilo amagesi asebenzayo, okusho ukuthi athinta okwenzeka endaweni yokushisela. Ama-electron alawa magesi asabela ne-weld pool ukuze akhiqize izici ezihlukene. I-Argon ne-helium amagesi angasebenzi, ngakho awasabeli ngezinto eziyisisekelo noma i-weld pool.
Isibonelo, i-CO2 ehlanzekile inikeza ukungena kwe-weld ejulile, okuwusizo ekushiseleni impahla ewugqinsi. Kodwa esimweni sayo esihlanzekile ikhiqiza i-arc engaqinile kanye ne-spatter eyengeziwe uma iqhathaniswa nalapho ihlanganiswe namanye amagesi. Uma izinga lokushisela nokubukeka kubalulekile, ingxube ye-argon/CO2 inganikeza ukuzinza kwe-arc, ukulawula i-weld pool, kanye ne-spatter encishisiwe.
Ngakho-ke, yimaphi amagesi ahambisana kangcono nezinto eziyisisekelo ezahlukahlukene?
I-Aluminium.Kufanele usebenzise i-argon engu-100% ye-aluminium. Ingxube ye-argon/helium isebenza kahle uma udinga ukungena okujulile noma isivinini sokuhamba esisheshayo. Gwema ukusebenzisa igesi evikela umoya-mpilo nge-aluminium ngoba umoya-mpilo ujwayele ukushisa futhi wengeze ungqimba lwe-oxidation.
Insimbi emnene.Ungakwazi ukubhanqa le nto nezinketho zegesi zokuvikela ezihlukahlukene, okuhlanganisa amaphesenti angu-100 we-CO2 noma ingxube ye-CO2/argon. Njengoba i-material iba mkhulu, ukwengeza umoya-mpilo egesini ye-argon kungasiza ekungeneni.
Insimbi ye-carbon.Le nto ihambisana kahle ne-CO2 engamaphesenti angu-100 noma ingxube ye-CO2/argon. Insimbi ene-alloy ephansi. Ingxube yegesi ye-oxygen engamaphesenti angu-98/2 ifaneleka kahle kule nto.
Ukusebenzisa igesi eyisivikelo engalungile noma ukugeleza kwegesi kungaba nomthelela omkhulu kukhwalithi yokushisela, izindleko, nokukhiqiza ezinhlelweni zakho ze-GMAW.
Insimbi engagqwali.I-Argon exutshwe namaphesenti angu-2 kuya kwangu-5 CO2 iyinto evamile. Uma udinga okuqukethwe kwekhabhoni ephansi kakhulu ku-weld, sebenzisa i-argon ene-oxygen engamaphesenti angu-1 ukuya kwangu-2.
Amathiphu Okuthuthukisa Kanjani Ukusebenza Kwegesi Yokuvikela
Ukukhetha igesi yokuvikela efanele kuyisinyathelo sokuqala esiya empumelelweni. Ukuthuthukisa ukusebenza kahle—ukonga isikhathi nemali—kudinga ukuthi uqaphele ezinye izinqubo ezingcono kakhulu ezingasiza ukonga igesi evikelayo futhi ikhuthaze ukumbozwa okufanele kwechibi lokushisela.
Isilinganiso sokugeleza. Izinga lokugeleza elifanele lincike ezintweni eziningi, okuhlanganisa isivinini sohambo kanye nenani lesikali sokugaya kusisekelo. Ukugeleza kwegesi okuneziyaluyalu ngesikhathi sokushisela ngokuvamile kusho ukuthi izinga lokugeleza, elilinganiswa ngama-cubic feet ngehora (CFH), liphezulu kakhulu, futhi lokhu kungabangela izinkinga ezinjengokuqina. Uma noma yimiphi imingcele yokushisela ishintsha, lokhu kungase kuthinte izinga lokugeleza kwegesi.
Isibonelo, ukukhulisa isivinini sokuphakela kwezintambo kuphinde kwenyuse noma usayizi wephrofayili yokushisela noma isivinini sokuhamba, okusho ukuthi ungase udinge izinga eliphezulu lokugeleza kwegesi ukuze uqinisekise ukumbozwa okufanele.
Izinto ezisetshenziswayo.Izinto ezisetshenziswayo zesibhamu ze-GMAW, ezihlanganisa i-diffuser, ithiphu yokuxhumana, kanye nombhobho, zidlala indima ebalulekile ekuqinisekiseni ukuthi i-weld pool ivikelwe ngendlela efanele emkhathini. Uma umlomo wombhobho umncane kakhulu ukuthi ungafakwa isicelo noma uma i-diffuser ivaleka nge-spatter, igesi encane kakhulu evikelayo ingase ifike endaweni yokushisela. Khetha izinto ezisebenzisekayo ezimelana nokwakheka kwesipatha futhi unikeze indawo ebanzi eyanele yokubhoboza umlomo ukuze uqinisekise ukumbozwa kwegesi okwanele. Futhi, qiniseka ukuthi ikhefu lethiphu yokuxhumana lilungile.
I-Gas Preflow.Ukusebenzisa igesi evikelayo imizuzwana embalwa ngaphambi kokushaya i-arc kungasiza ukuqinisekisa ukuthi kukhona ukumbozwa okwanele. Ukusebenzisa igesi preflow kungaba usizo ikakhulukazi lapho ushisela imifantu ejulile noma ama-bevel adinga intambo ende yokuphuma. Ukugeleza kwangaphambili okugcwalisa ukujoyina ngegesi ngaphambi kokuqala kungase kukuvumele ukuthi wehlise izinga lokugeleza kwegesi, ngaleyo ndlela wonge igesi futhi wehlise nezindleko.
Ukugcinwa Kwesistimu.Uma usebenzisa isistimu yegesi eyinqwaba, yenza ukunakekelwa okufanele ukuze usize ukugcwalisa ukusebenza kahle. Yonke indawo yokuxhumana ohlelweni iwumthombo wokuvuza kwegesi, ngakho-ke qapha konke ukuxhumana ukuze uqiniseke ukuthi kuqinile. Kungenjalo, ungase ulahlekelwe igesi ethile evikelayo ocabanga ukuthi izofika ekushiseleni.
I-Gas Regulator. Qiniseka ukuthi usebenzisa isilawuli esilungile esisuselwe kungxube yegesi oyisebenzisayo. Ukuxuba okunembayo kubalulekile ekuvikeleni ukushisela. Ukusebenzisa isilawuli esingalungile sengxube yegesi, noma ukusebenzisa uhlobo olungalungile lwezixhumi, nakho kungaholela ekukhathazekeni kokuphepha. Hlola izilawuli njalo ukuze usize ukuqinisekisa ukuthi zisebenza kahle.
Gun Updates.Uma usebenzisa isibhamu esiphelelwe yisikhathi, bheka amamodeli abuyekeziwe anikeza izinzuzo, njengobubanzi obuncane bangaphakathi kanye nolayini wepayipi legesi elihlukanisiwe, elikuvumela ukuthi usebenzise izinga lokugeleza kwegesi eliphansi. Lokhu kusiza ukuvimbela isiyaluyalu echibini lokushisela kuyilapho konga igesi.
Isikhathi sokuthumela: Dec-30-2022
