Kugwiritsa ntchito molakwika kutchingira gasi kapena kuyenda kwa gasi kumatha kukhudza mtundu wa weld, mtengo wake, ndi zokolola kwambiri. Kuteteza gasi kumateteza dziwe losungunuka kuti lisawonongeke kunja, choncho ndikofunikira kusankha gasi woyenera pantchitoyo.
Kuti mupeze zotsatira zabwino, ndikofunikira kudziwa kuti ndi mipweya iti ndi gasi yomwe ili yoyenera kwambiri pazinthu zina. Muyeneranso kudziwa maupangiri angapo omwe angakuthandizeni kukhathamiritsa ntchito ya gasi pakuwotcherera kwanu, zomwe zingakupulumutseni ndalama.
Njira zingapo zotetezera gasi zowotcherera zitsulo zamagetsi (GMAW) zitha kugwira ntchitoyo. Kusankha gasi yemwe ali woyenera kwambiri pazinthu zoyambira, njira yosinthira, ndi zowotcherera zingakuthandizeni kuti mupindule kwambiri ndi ndalamazo.
Kusankha gasi yemwe ali woyenera kwambiri pazida zoyambira, njira yosinthira, ndi zowotcherera zingakuthandizeni kuti mupindule kwambiri ndi ndalama zanu.
Kusakwanira Kwa Gasi Woteteza
Kuyenda bwino kwa gasi ndi kuphimba ndikofunikira kuyambira pomwe wowotcherera arc amenyedwa. Childs, mavuto gasi otaya nthawi yomweyo noticeable. Mutha kukhala ndi vuto lokhazikitsa kapena kusunga arc kapena kupeza zovuta kupanga ma welds abwino.
Kuphatikiza pa zovuta zamtundu, kusagwira bwino ntchito kwa gasi kumatha kubweretsanso ndalama zogwirira ntchito. Kuthamanga komwe kumakhala kokwera kwambiri, mwachitsanzo, kumatanthauza kuti mukuwononga gasi ndikuwononga ndalama zambiri poteteza gasi kuposa momwe mukufunikira.
Mayendedwe omwe ali okwera kwambiri kapena otsika kwambiri angayambitse porosity, zomwe zimafuna nthawi yothetsa mavuto ndi kukonzanso. Mayendedwe otsika kwambiri angayambitse vuto la weld chifukwa dziwe la weld silikutetezedwa mokwanira.
Kuchuluka kwa spatter komwe kumapangidwa pakuwotcherera kumakhudzananso ndi mpweya woteteza womwe ukugwiritsidwa ntchito. Kuchuluka kwa spatter kumatanthauza nthawi yambiri ndi ndalama zomwe zimagwiritsidwa ntchito pogaya postweld.
Momwe Mungasankhire Gasi Woteteza
Pali zinthu zingapo zomwe zimatsimikizira mpweya wotchinga woyenera panjira ya GMAW, kuphatikiza mtundu wazinthu, zitsulo zodzaza ndi ma weld transfer.
Mtundu Wazinthu.Ichi chikhoza kukhala chinthu chachikulu choyenera kuganizira pakugwiritsa ntchito. Mwachitsanzo, zitsulo za carbon ndi aluminiyamu zimakhala ndi makhalidwe osiyana kwambiri ndipo zimafuna mpweya wotetezera wosiyana kuti upeze zotsatira zabwino. Muyeneranso kuganizira makulidwe azinthu posankha mpweya wotchinga.
Filler Metal Type.Chitsulo chodzaza chimafanana ndi zinthu zoyambira, kotero kumvetsetsa zinthuzo kuyenera kukupatsani lingaliro labwino la gasi wabwino kwambiri wazitsulo zodzaza. Zambiri zamakina opangira ma weld zimaphatikizanso tsatanetsatane wazomwe zimasakanikirana ndi gasi zomwe zingagwiritsidwe ntchito ndi zitsulo zinazake zodzaza.
Kuteteza koyenera kwa gasi ndi kuphimba ndikofunikira kuyambira pomwe arc yowotcherera imakanthidwa. Chithunzichi chikuwonetsa kuyenda kosalala kumanzere, komwe kudzaphimba dziwe la weld, ndi kutuluka kwa chipwirikiti kumanja.
Welding transfer mode.Itha kukhala yofupikitsa, yopopera-arc, pulsed-arc, kapena kusamutsa kwapadziko lonse. Mtundu uliwonse umagwirizana bwino ndi mpweya wina woteteza. Mwachitsanzo, musagwiritse ntchito 100 peresenti ya argon ndi njira yosinthira kutsitsi. M'malo mwake, gwiritsani ntchito osakaniza monga 90 peresenti argon ndi 10 peresenti ya carbon dioxide. Mulingo wa CO2 mu kusakaniza kwa gasi sayenera kupitirira 25 peresenti.
Zina zowonjezera zomwe ziyenera kuganiziridwa zikuphatikizapo liwiro laulendo, mtundu wa malowedwe ofunikira pa olowa, ndi gawo lokwanira. Kodi chowotcherera chatha? Ngati ndi choncho, izi zidzakhudzanso mpweya wotetezera womwe mungasankhe.
Kuteteza Gasi Zosankha za GMAW
Argon, helium, CO2, ndi mpweya ndi mpweya woteteza kwambiri womwe umagwiritsidwa ntchito mu GMAW. Mpweya uliwonse uli ndi ubwino ndi zovuta zake pakugwiritsa ntchito kulikonse. Mipweya ina ndiyoyenera kuposa ina pazida zoyambira zomwe zimagwiritsidwa ntchito kwambiri, kaya ndi aluminiyamu, chitsulo chofewa, chitsulo cha kaboni, chitsulo chochepa cha alloy, kapena chitsulo chosapanga dzimbiri.
CO2 ndi mpweya ndi mpweya wotuluka, kutanthauza kuti zimakhudza zomwe zikuchitika mu weld dziwe. Ma elekitironi a mpweya umenewu amachitira ndi dziwe la weld kuti apange makhalidwe osiyanasiyana. Argon ndi helium ndi mpweya wa inert, kotero samachita ndi zinthu zoyambira kapena dziwe la weld.
Mwachitsanzo, CO2 koyera imapereka malowedwe ozama kwambiri, omwe ndi othandiza pakuwotcherera zinthu zakuda. Koma m’mawonekedwe ake oyera, amatulutsa chiwombankhanga chochepa kwambiri komanso sipatter chochulukira poyerekeza ndi pamene akusakanikirana ndi mpweya wina. Ngati mawonekedwe a weld ndi mawonekedwe ndizofunikira, kusakaniza kwa argon/CO2 kungapereke kukhazikika kwa arc, kuwongolera dziwe la weld, ndi kuchepetsedwa kwa spatter.
Ndiye, ndi mipweya iti yomwe imagwirizana bwino ndi zida zosiyanasiyana?
Aluminiyamu.Muyenera kugwiritsa ntchito 100 peresenti argon kwa aluminiyamu. Kusakaniza kwa argon / helium kumagwira ntchito bwino ngati mukufuna kulowa mozama kapena kuthamanga kwachangu. Pewani kugwiritsa ntchito mpweya woteteza mpweya wokhala ndi aluminiyamu chifukwa mpweya umakonda kutentha ndipo umawonjezera kuti okosijeni.
Chitsulo chofatsa.Mukhoza kuphatikizira zinthuzi ndi njira zosiyanasiyana zotetezera gasi, kuphatikizapo 100 peresenti CO2 kapena CO2 / argon mix. Pamene zinthu zikukulirakulira, kuwonjezera mpweya ku mpweya wa argon kungathandize kulowa.
Chitsulo cha carbon.Izi zimagwirizana bwino ndi 100 peresenti CO2 kapena CO2 / argon mix. Chitsulo chochepa cha alloy. Kusakaniza kwa mpweya wa okosijeni wa 98% / 2% ndikoyenera pazinthu izi.
Kugwiritsa ntchito gasi wotchinga molakwika kapena kuyenda kwa gasi kumatha kukhudza kwambiri mtundu wa weld, mtengo wake, ndi zokolola muzogwiritsa ntchito za GMAW.
Chitsulo chosapanga dzimbiri.Argon wosakanikirana ndi 2 mpaka 5 peresenti ya CO2 ndizochitika. Mukafuna kukhala ndi mpweya wochepa kwambiri mu weld, gwiritsani ntchito argon ndi 1 mpaka 2 peresenti ya okosijeni.
Momwe Mungapangire Maupangiri Okhathamiritsa Kugwira Ntchito Kwa Gasi Woteteza
Kusankha mpweya wabwino woteteza ndi sitepe yoyamba yopita kuchipambano. Kupititsa patsogolo ntchito-kupulumutsa nthawi ndi ndalama-kumafuna kuti mudziwe njira zina zabwino zomwe zingathandize kuteteza mpweya wotchinga ndi kulimbikitsa kuphimba bwino kwa dziwe la weld.
Mtengo Woyenda. Kuthamanga koyenera kumadalira zinthu zambiri, kuphatikizapo liwiro la ulendo ndi kuchuluka kwa mphero pazitsulo zoyambira. Kutuluka kwa chipwirikiti kwa gasi panthawi yowotcherera nthawi zambiri kumatanthauza kuti kuthamanga kwa ma kiyubiki mapazi pa ola (CFH), ndikokwera kwambiri, ndipo izi zingayambitse mavuto monga porosity. Ngati zowotcherera zisintha, izi zitha kukhudza kuchuluka kwa gasi.
Mwachitsanzo, kuonjezera liwiro la chakudya chamawaya kumawonjezeranso kukula kwa mbiri ya weld kapena liwiro laulendo, zomwe zikutanthauza kuti mungafunike kuchuluka kwa gasi kuti mutsimikizire kufalikira koyenera.
Consumables.Zida zamfuti za GMAW, zokhala ndi cholumikizira, nsonga yolumikizirana, ndi nozzle, zimagwira ntchito yofunika kwambiri pakuwonetsetsa kuti dziwe la weld likutetezedwa bwino kuchokera mumlengalenga. Ngati mphuno ndi yopapatiza kwambiri kuti isagwiritsidwe ntchito kapena ngati chothirira madzi chitsekeka ndi sipatter, mpweya wotchinga wochepa kwambiri ukhoza kufika padziwe la weld. Sankhani zinthu zogwiritsidwa ntchito zomwe zimakana kuchulukana kwa spatter ndikupereka chibowo chokulirapo chokwanira kuti mutsimikizire kuti mpweya umakhala wokwanira. Komanso, onetsetsani kuti nsonga yolumikizirana ndiyolondola.
Kutuluka kwa Gasi.Kuthamanga mpweya wotchinga kwa masekondi angapo musanamenye arc kungathandize kuonetsetsa kuti pali kuphimba kokwanira. Kugwiritsira ntchito mpweya wopita patsogolo kungakhale kothandiza makamaka powotchera ma grooves akuya kapena ma bevel omwe amafunikira kutulutsa waya wautali. Kuthamanga komwe kumadzadza ndi gasi musanayambe kukulolani kuti muchepetse kuthamanga kwa gasi, potero kusunga mpweya ndi kuchepetsa mtengo.
Kusamalira System.Mukamagwiritsa ntchito gasi wochuluka, konzekerani bwino kuti muwongolere magwiridwe antchito. Malo aliwonse olumikizirana ndi makinawa ndi gwero la kutha kwa gasi, choncho yang'anani maulaliki onse kuti muwonetsetse kuti ali olimba. Kupanda kutero, mutha kutaya ena mwa gasi wotchinga omwe mukuganiza kuti akufika pakuwotcherera.
Gasi Regulator. Onetsetsani kuti mukugwiritsa ntchito chowongolera choyenera kutengera kusakaniza kwa gasi komwe mukugwiritsa ntchito. Kusakaniza kolondola ndikofunikira pachitetezo cha weld. Kugwiritsa ntchito chowongolera molakwika pakusakanikirana kwa gasi, kapena kugwiritsa ntchito zolumikizira zolakwika, kungayambitsenso nkhawa zachitetezo. Yang'anani owongolera pafupipafupi kuti muwonetsetse kuti akugwira ntchito moyenera.
Zosintha za Mfuti.Ngati mukugwiritsa ntchito mfuti yachikale, yang'anani m'mawonekedwe osinthidwa omwe amapereka zopindulitsa, monga m'mimba mwake yaing'ono yamkati ndi mzere wapakati wa gasi, womwe umakulolani kugwiritsa ntchito mpweya wochepa wa gasi. Izi zimathandiza kupewa chipwirikiti mu weld dziwe komanso kusunga mpweya.
Nthawi yotumiza: Dec-30-2022
