Kodi mwakumanapo ndi zovuta zilizonse zowotcherera monga kuwotcherera kwakukulu pakuwotcherera, mawonekedwe osawoneka bwino a weld, komanso ma pores ambiri mutatha kuwotcherera?Pamene mukuganizirabe ngati chifukwa cha vuto la zoikamo kuwotcherera laser ndondomeko chizindikiro, kodi mukudziwa kuti ntchito yolondola kuwotcherera shielding mpweya ndi chinthu chofunika kwambiri kukhudza mapangidwe kuwotcherera ndi ntchito.Kusankha mpweya wabwino wotchingira wowotcherera kumapangitsa kuti zinthu ziziyenda bwino komanso Njira yabwino.
Popeza kuwotcherera gasi ndikofunika kwambiri, ndiye: Kodi ntchito yoteteza gasi ndi yotani?Momwe mungasankhire mtundu wa gasi woteteza?Kodi gasi woteteza ayenera kuwotchedwa bwanji panthawi yowotcherera?Kenako, Hangao Tech (SEKO Machinery) itsogolera aliyense kuphunzira zambiri.
Udindo wa gasi woteteza
Mu kuwotcherera kwa laser, kutchingira mpweya kumakhudza mapangidwe a weld, weld quality, weld kulowa kuya ndi m'lifupi olowera.Nthawi zambiri, kuwomba gasi wotchinga kumakhala ndi zotsatira zabwino pa weld, koma kungayambitsenso kuwonongeka.Bwerani zotsatira zoyipa.
Zotsatira zabwino
1) Kuwomba koyenera kwa mpweya wotchinga kumateteza bwino dziwe la weld kuti muchepetse kapena kupewa oxidation;
2) Kuwomba koyenera kwa gasi wotchinga kumatha kuchepetsa sipatter yomwe imapangidwa panthawi yowotcherera;
3) Kuwomba koyenera kwa mpweya wotchinga kungathe kulimbikitsa kufalikira kwa yunifolomu ya dziwe la weld panthawi yolimba, kotero kuti weld amapangidwa mofanana komanso mokongola;
4) Kuwomba koyenera kwa mpweya wotchinga kumatha kuchepetsa kutchingira kwa chitsulo cha nthunzi kapena mtambo wa plasma pa laser, ndikuwonjezera kugwiritsa ntchito bwino kwa laser;
5) Kuwomba koyenera kwa gasi wotchinga kumatha kuchepetsa kutsekemera kwa msoko.
Malingana ngati mtundu wa gasi, kuchuluka kwa gasi, ndi njira yowombera zimasankhidwa bwino, zotsatira zomwe mukufuna zingapezeke.
Komabe, kugwiritsa ntchito molakwika gasi wotchingira kudzakhalanso ndi vuto pakuwotcherera
1) Kuwomba molakwika kwa mpweya wotchinga kungayambitse kuwonongeka kwa weld:
①Kusankha mtundu wolakwika wa gasi kungayambitse ming'alu mu weld, komanso kupangitsa kuti makina a weld achepe;
②Kusankha kuthamanga kwa mpweya wolakwika kungayambitse kuyatsa kwambiri kwa weld (kaya kutuluka kwake ndi kwakukulu kapena kochepa kwambiri), komanso kungayambitsenso zitsulo za weld pool kuti zisokonezedwe kwambiri ndi mphamvu zakunja ndikupangitsa weld kugwa kapena kupanga. mosagwirizana;
③Kusankha njira yolakwika yowombera gasi kumapangitsa kuti msoko wowotcherera ulephere kukwaniritsa chitetezo kapena ngakhale kusakhala ndi chitetezo kapena kuwononga mapangidwe ake;
2) Kuwombera muzitsulo zotetezera mpweya kudzakhala ndi zotsatira zina pa malowedwe a weld, makamaka pamene kuwotcherera mbale zoonda, zidzachepetsa kulowetsedwa kwa weld.
Mitundu ya gasi woteteza
Mipweya yotchinjiriza yomwe imagwiritsidwa ntchito kwambiri pakuwotcherera kwa laser makamaka imaphatikizapo N2, Ar, He, ndi zinthu zawo zakuthupi ndi zamankhwala ndizosiyana, chifukwa chake zotsatira zake pa weld ndizosiyananso.
Nayitrogeni N2
Mtengo wake ndiwotsika mtengo kwambiri, koma siwoyenera kuwotcherera zitsulo zosapanga dzimbiri.Mphamvu ya ionization ya N2 ndi yocheperako, yapamwamba kuposa ya Ar komanso yotsika kuposa ya Iye.Pansi pa laser, digiri ya ionization ndi pafupifupi, yomwe imatha kuchepetsa mapangidwe amtambo wa plasma ndikuwonjezera kugwiritsa ntchito bwino kwa laser.Nayitrojeni imatha kuchitapo kanthu ndi aluminiyumu aloyi ndi chitsulo cha kaboni pa kutentha kwina kuti apange nitrides, zomwe zimawonjezera kuphulika kwa weld, kuchepetsa kulimba, komanso kukhala ndi zotsatira zoyipa pamakina a olowa.Choncho, sikulimbikitsidwa kugwiritsa ntchito nayitrogeni.Aluminium alloy ndi carbon steel welds amatetezedwa.
Nitride yomwe imapangidwa ndi mankhwala pakati pa nayitrogeni ndi chitsulo chosapanga dzimbiri imatha kukulitsa mphamvu ya olowa, zomwe zingathandize kukonza makina a weld.Choncho, nayitrogeni angagwiritsidwe ntchito ngati chotchinga mpweya pamene kuwotcherera zitsulo zosapanga dzimbiri.
Argon Ar
Mtengo ndi wotsika mtengo, kachulukidwe kake ndi kokwera, ndipo chitetezo chimakhala chabwino.Pamwamba pa kuwotcherera ndi osalala kuposa mpweya wa helium, koma amatha kutenthedwa ndi ionization yachitsulo ya plasma.Zolepheretsa kwambiri.Mphamvu ya ionization ya Ar ndi yotsika kwambiri, ndipo digiri ya ionization ndi yapamwamba pansi pa machitidwe a laser, omwe sangathandize kulamulira mapangidwe a mtambo wa plasma, ndipo adzakhala ndi zotsatira zina pakugwiritsa ntchito bwino kwa laser.Komabe, ntchito ya Ar ndi yotsika kwambiri ndipo ndizovuta kuyanjana ndi mankhwala ndi zitsulo wamba.Mtengo wa Ar siwokwera.Kuonjezera apo, kachulukidwe ka Ar ndi wapamwamba, zomwe zimapindulitsa kumira pamwamba pa dziwe la weld, ndipo zimatha kuteteza bwino dziwe la weld, kotero lingagwiritsidwe ntchito ngati mpweya wotetezera wamba.
Helium Iye
Mtengo ndi wokwera mtengo, koma zotsatira zake ndi zabwino kwambiri, kotero kuti laser ikhoza kudutsa mwachindunji ndikufika pamwamba pa workpiece popanda kutsekedwa.Mphamvu ya ionization ya Iye ndi yapamwamba kwambiri, ndipo digiri ya ionization ndi yochepa kwambiri pansi pa machitidwe a laser, omwe amatha kulamulira mapangidwe a mtambo wa plasma.Laser amatha kuchitapo kanthu pazitsulo bwino kwambiri, ndipo ntchito ya Iye ndi yotsika kwambiri, ndipo kwenikweni sichichita ndi chitsulo.Ndi bwino kutchinga mpweya kwa kuwotcherera seams, koma mtengo wa Iye ndi wokwera kwambiri.Nthawi zambiri, zopanga zambiri sizigwiritsa ntchito mpweyawu.Nthawi zambiri amagwiritsidwa ntchito pofufuza zasayansi kapena zinthu zomwe zili ndi mtengo wowonjezera kwambiri.
Hangao Tech (SEKO Machinery) ali ndi zaka zopitilira 20 mu zosapanga dzimbiri zitsulo mafakitale chitoliro kupanga mzere chubu kupanga makina makampani kupanga.Gulu lokhwima la R&D ndi akatswiri amisonkhano azichita zinthu zambiri zosokoneza ndikutsimikiziranso mobwerezabwereza pamzere uliwonse wopanga asanatumizidwe, kuti awonjezere zida.Chepetsani magwiridwe antchito ndikuchepetsa zovuta za kukhazikitsa ndi kukonza zolakwika kwa makasitomala.
