Metal Inert Gas (MIG) kuwotcherera ndikuwotcherera arcNjira yomwe imagwiritsa ntchito ma elekitirodi olimba opitilirabe kutenthedwa ndikudyetsedwa mu dziwe la weld kuchokera kumfuti yowotcherera.Zida ziwiri zoyambira zimasungunuka pamodzi kupanga cholumikizira.Mfutiyi imadyetsa mpweya wotchinga pambali pa electrode yomwe imathandizira kuteteza dziwe la weld ku zowonongeka ndi mpweya.
Kuwotcherera kwa Metal Inert Gas (MIG) kudayamba kukhala ndi setifiketi ku USA mu 1949 pakuwotcherera aluminium.Dziwe la arc ndi weld lomwe linapangidwa pogwiritsa ntchito ma electrode opanda waya linali lotetezedwa ndi mpweya wa helium, womwe umapezeka mosavuta panthawiyo.Kuyambira cha m'ma 1952, njirayi idadziwika ku UK pakuwotcherera aluminiyamu pogwiritsa ntchito argon ngati mpweya wotchingira, komanso zitsulo za kaboni zogwiritsa ntchito CO2.CO2 ndi argon-CO2 zosakaniza zimadziwika kuti metal active gas (MAG) process.MIG ndi njira yowoneka bwino ya MMA, yopereka mitengo yotsika kwambiri komanso zokolola zambiri.
Makhalidwe a Njira
Kuwotcherera kwa MIG/MAG ndi njira yosunthika yoyenerera pazigawo zopyapyala komanso zigawo zokhuthala.Arc imamenyedwa pakati pa mapeto a electrode ya waya ndi chogwirira ntchito, kusungunula zonsezo kuti apange dziwe la weld.Waya amagwira ntchito ngati gwero la kutentha (kudzera pa arc pa nsonga ya waya) ndi zitsulo zodzazakuwotcherera olowa.Waya amadyetsedwa kudzera mu chubu cholumikizana ndi mkuwa (nsonga yolumikizirana) yomwe imayendetsa magetsi mu waya.Dziwe la weld limatetezedwa kumlengalenga ndi mpweya wotchinga womwe umaperekedwa kudzera mumphuno yozungulira waya.Kuteteza gasi kusankha kumatengera zinthu zomwe zimawotcherera komanso kugwiritsa ntchito.Waya amadyetsedwa kuchokera ku reel ndi galimoto, ndipo wowotcherera amasuntha nyali yowotcherera pamzere wolumikizana.Mawaya amatha kukhala olimba (waya osavuta kukokedwa), kapena opindika (zophatikizika zopangidwa kuchokera kuzitsulo zachitsulo zokhala ndi ufa kapena kudzaza chitsulo).Zogwiritsidwa ntchito nthawi zambiri zimakhala zokwera mtengo poyerekeza ndi zina.Njirayi imapereka zokolola zambiri, monga waya amadyetsedwa mosalekeza.
Kuwotcherera kwa Manual MIG/MAG nthawi zambiri kumatchedwa njira yodziwikiratu, popeza kuchuluka kwa chakudya cha waya ndi kutalika kwa arc kumayendetsedwa ndi gwero lamagetsi, koma liwiro laulendo ndi waya zimayendetsedwa ndimanja.Njirayi imatha kupangidwanso ngati njira zonse zowotcherera sizimayendetsedwa mwachindunji ndi wowotcherera, koma zitha kufunikirabe kusintha pamanja pakuwotcherera.Ngati palibe kulowererapo pamanja komwe kumafunikira pakuwotcherera, njirayo imatha kutchedwa yodziwikiratu.
Njirayi nthawi zambiri imagwira ntchito ndi waya woyendetsedwa bwino ndikulumikizidwa ku gwero lamagetsi lomwe limapereka voteji nthawi zonse.Kusankhidwa kwa mawaya awiri (nthawi zambiri pakati pa 0.6 ndi 1.6mm) ndi liwiro la chakudya cha waya kumatsimikizira kutentha kwa waya, chifukwa kutentha kwa waya kumapanga kufanana ndi liwiro la chakudya.
Nthawi yotumiza: Oct-18-2021