Mphamvu ya Gasi Woteteza mu Kuwotcherera kwa Laser
Handheld Laser Welder
Zamutu:
▶ Kodi Gasi Wa Right Shield Ungakupezere Chiyani?
▶ Mitundu Yosiyanasiyana ya Gasi Wodzitetezera
▶ Njira Ziwiri Zogwiritsira Ntchito Gasi Woteteza
▶ Kodi Mungasankhe Bwanji Gasi Woteteza Moyenera?
Kuwotcherera kwa Laser m'manja
Mphamvu Yabwino ya Gasi Woyenera wa Shield
Mu kuwotcherera kwa laser, kusankha kwa gasi woteteza kumatha kukhudza kwambiri mapangidwe, mtundu, kuya, ndi m'lifupi mwa msoko wa weld.Nthawi zambiri, kuyambitsidwa kwa mpweya woteteza kumakhala ndi zotsatira zabwino pa msoko wowotcherera.Komabe, zingakhalenso ndi zotsatirapo zoipa.Zotsatira zabwino zogwiritsa ntchito mpweya wabwino woteteza ndi izi:
1. Chitetezo chokwanira cha dziwe la weld
Kuyambitsa bwino kwa gasi woteteza kumatha kutetezera bwino dziwe la weld kuti lisakhale ndi okosijeni kapenanso kuletsa okosijeni palimodzi.
2. Kuchepetsa kuwaza
Kubweretsa bwino gasi wodzitchinjiriza kumatha kuchepetsa kukwapula panthawi yowotcherera.
3. Mapangidwe amtundu wa weld seam
Kuyambitsa koyenera kwa mpweya woteteza kumalimbikitsa ngakhale kufalikira kwa dziwe la weld panthawi yolimba, zomwe zimapangitsa kuti pakhale yunifolomu komanso kukongola kosangalatsa.
4. Kuwonjezeka kwa kugwiritsidwa ntchito kwa laser
Kubweretsa bwino gasi woteteza kumatha kuchepetsa kutchingira kwa zitsulo za nthunzi kapena mitambo ya plasma pa laser, potero kumawonjezera mphamvu ya laser.
5. Kuchepetsa weld porosity
Kubweretsa bwino gasi woteteza kumatha kuchepetsa mapangidwe a pores a gasi mumsoko wowotcherera.Posankha mtundu woyenera wa gasi, kuchuluka kwa kayendedwe kake, ndi njira yoyambira, zotsatira zabwino zitha kupezeka.
Komabe,
Kugwiritsa ntchito molakwika gasi woteteza kumatha kukhala ndi zotsatira zoyipa pakuwotcherera.Zotsatira zake ndizo:
1. Kuwonongeka kwa msoko wa weld
Kuyambitsa molakwika kwa gasi woteteza kungayambitse kuperewera kwa msoko.
2. Kusweka ndi kuchepetsa makina katundu
Kusankha mtundu wolakwika wa gasi kungayambitse kusweka kwa weld ndi kuchepa kwa makina.
3. Kuchuluka kwa okosijeni kapena kusokoneza
Kusankha kuthamanga kwa gasi kolakwika, kaya kukukwera kwambiri kapena kutsika kwambiri, kungayambitse kuwonjezereka kwa okosijeni wa msoko wowotcherera.Zingayambitsenso kusokonezeka kwakukulu kwa chitsulo chosungunuka, zomwe zimapangitsa kugwa kapena kupangika kosagwirizana kwa seam weld.
4. Chitetezo chokwanira kapena zotsatira zoipa
Kusankha njira yoyambira yolakwika ya gasi kungayambitse chitetezo chokwanira cha msoko wa weld kapena kukhala ndi zotsatira zoyipa pakupanga msoko wa weld.
5. Chikoka pa kuya weld
Kuyambitsidwa kwa mpweya woteteza kumatha kukhudza kuya kwa weld, makamaka mu kuwotcherera mbale woonda, komwe kumachepetsa kuya kwa weld.
Kuwotcherera kwa Laser m'manja
Mitundu ya Magesi Oteteza
Mipweya yoteteza yomwe imagwiritsidwa ntchito kwambiri pakuwotcherera laser ndi nayitrogeni (N2), argon (Ar), ndi helium (He).Mipweya iyi imakhala ndi zinthu zosiyanasiyana zakuthupi ndi zamankhwala, zomwe zimapangitsa kuti pakhale zotsatira zosiyanasiyana pa msoko wa weld.
1. Nayitrogeni (N2)
N2 ili ndi mphamvu ya ionization yapakati, yapamwamba kuposa Ar komanso yotsika kuposa Iye.Pogwiritsa ntchito laser, ionizes pang'onopang'ono, kuchepetsa mapangidwe a mitambo ya plasma ndikuwonjezera kugwiritsa ntchito laser.Komabe, nayitrogeni amatha kuchitapo kanthu ndi zitsulo zotayidwa ndi aluminiyamu ndi chitsulo cha carbon pa kutentha kwina, kupanga nitrides.Izi zitha kuonjezera brittleness ndi kuchepetsa kulimba kwa weld msoko, kusokoneza makina ake katundu.Chifukwa chake, kugwiritsa ntchito nayitrogeni ngati gasi woteteza ma aloyi a aluminiyamu ndi ma welds a carbon steel sikuvomerezeka.Kumbali ina, nayitrogeni imatha kuchitapo kanthu ndi chitsulo chosapanga dzimbiri, kupanga ma nitridi omwe amawonjezera mphamvu ya olowa.Choncho, nayitrogeni angagwiritsidwe ntchito ngati mpweya zoteteza kuwotcherera zitsulo zosapanga dzimbiri.
2. Argon Gasi (Ar)
Mpweya wa Argon uli ndi mphamvu yotsika kwambiri ya ionization, zomwe zimapangitsa kuti pakhale kuchuluka kwa ionization pansi pa laser.Izi sizothandiza pakuwongolera mapangidwe a mitambo ya plasma ndipo zitha kukhala ndi zotsatirapo zina pakugwiritsa ntchito bwino kwa ma laser.Komabe, argon imakhala ndi reactivity yochepa kwambiri ndipo sizingatheke kukhudzana ndi mankhwala ndi zitsulo wamba.Kuphatikiza apo, argon ndiyotsika mtengo.Kuphatikiza apo, chifukwa chakuchulukira kwake, argon imamira pamwamba pa dziwe, zomwe zimateteza bwino dziwe la weld.Choncho, angagwiritsidwe ntchito ngati ochiritsira kutchinga mpweya.
3. Gasi wa Helium (Iye)
Mpweya wa Helium uli ndi mphamvu zambiri za ionization, zomwe zimatsogolera ku digiri yotsika kwambiri ya ionization pansi pa laser action.Zimalola kuwongolera bwino kwa mapangidwe amtambo a plasma, ndipo ma laser amatha kulumikizana bwino ndi zitsulo.Kuphatikiza apo, helium imakhala ndi reactivity yotsika kwambiri ndipo simakumana ndi zitsulo mosavuta, zomwe zimapangitsa kuti ikhale mpweya wabwino kwambiri wotchingira ma weld.Komabe, mtengo wa helium ndi wokwera, choncho nthawi zambiri sagwiritsidwa ntchito popanga zinthu zambiri.Amagwiritsidwa ntchito kwambiri pofufuza zasayansi kapena pazinthu zomwe zimawonjezera mtengo.
Kuwotcherera kwa Laser m'manja
Njira Zodziwitsira Gasi Woteteza
Pakalipano, pali njira ziwiri zazikulu zopangira mpweya wotchinga: kuwomba mbali kwa mbali ndi mpweya wa coaxial shielding, monga momwe tawonetsera pa Chithunzi 1 ndi Chithunzi 2, motsatana.
Chithunzi 1: Off-axis Mbali Yowomba Gasi Wotchinga
Chithunzi 2: Coaxial Shielding Gas
Kusankha pakati pa njira ziwiri zowomba zimadalira malingaliro osiyanasiyana.Nthawi zambiri, tikulimbikitsidwa kugwiritsa ntchito njira yowuzira mbali ya off-axis poteteza gasi.
Kuwotcherera kwa Laser m'manja
Mfundo Zosankha Njira Yodziwitsira Gasi Woteteza
Choyamba, ndikofunikira kufotokozera kuti mawu akuti "oxidation" a welds ndi mawu ogwirizana.Mwachidziwitso, amatanthauza kuwonongeka kwa weld quality chifukwa cha zochita za mankhwala pakati pa chitsulo chowotcherera ndi zinthu zovulaza mumlengalenga, monga mpweya, nayitrogeni, ndi haidrojeni.
Kupewa kuwotcherera makutidwe ndi okosijeni kumaphatikizapo kuchepetsa kapena kupewa kukhudzana pakati pa zinthu zovulazazi ndi zitsulo zotentha kwambiri.Mkhalidwe wotenthawu umaphatikizapo osati chitsulo chosungunula chowotcherera dziwe komanso nthawi yonse kuyambira pamene zitsulo zowotcherera zimasungunuka mpaka dziwe litakhazikika ndipo kutentha kwake kumachepa pansi pa malo enaake.
Mwachitsanzo, pakuwotcherera kwa titaniyamu, kutentha kukakhala pamwamba pa 300 ° C, kuyamwa mwachangu kwa haidrojeni kumachitika;pamwamba pa 450 ° C, kuyamwa kwa okosijeni mofulumira kumachitika;ndipo pamwamba pa 600 ° C, mayamwidwe ofulumira a nayitrogeni amapezeka.Choncho, chitetezo chogwira ntchito chimafunika kuti titaniyamu alloy weld panthawiyi iwumbe ndipo kutentha kwake kumatsika pansi pa 300 ° C kuti ateteze oxidation.Malingana ndi zomwe tafotokozazi, zikuwonekeratu kuti mpweya wotetezera womwe umawombedwa uyenera kupereka chitetezo osati ku dziwe la weld panthawi yoyenera komanso kudera lokhazikika la weld.Chifukwa chake, njira yowombera mbali ya mbali yomwe ikuwonetsedwa mu Chithunzi 1 nthawi zambiri imakonda chifukwa imapereka chitetezo chochulukirapo poyerekeza ndi njira yotchingira ya coaxial yomwe ikuwonetsedwa mu Chithunzi 2, makamaka kudera lokhazikika la weld.Komabe, pazinthu zina zapadera, kusankha kwa njirayo kuyenera kupangidwa potengera kapangidwe kazinthu ndi kamangidwe kaphatikizidwe.
Kuwotcherera kwa Laser m'manja
Kusankha Mwachindunji Njira Yodziwitsira Gasi Woteteza
1. Wowotcherera wolunjika
Ngati chowotcherera cha chinthucho chili chowongoka, monga momwe chikuwonetsedwera mu Chithunzi 3, ndipo kusanjidwa kophatikizana kumaphatikizapo zolumikizira matako, zolumikizira mchiuno, zowotcherera, kapena zowotcherera, njira yabwino yopangira mtundu uwu wazinthu ndi njira yowombetsa mbali yowonekera. Chithunzi 1.
Chithunzi 3: Wowotcherera Mzere Wowongoka
2. Planar Enclosed Geometry Weld
Monga momwe tawonetsera pa Chithunzi 4, weld mu mtundu uwu wa mankhwala ali ndi mawonekedwe otsekedwa opangidwa, monga mawonekedwe ozungulira, a polygonal, kapena amitundu yambiri.Kukonzekera kophatikizana kungaphatikizepo mafupa a matako, ma lap joints, kapena stack welds.Pazinthu zamtunduwu, njira yomwe imakonda ndiyo kugwiritsa ntchito mpweya wotchinga wa coaxial womwe wawonetsedwa pachithunzi 2.
Chithunzi 4: Planar Enclosed Geometry Weld
Kusankhidwa kwa gasi wotchingira ma welds otsekeka a geometry kumakhudza mwachindunji mtundu, magwiridwe antchito, komanso mtengo wopangira kuwotcherera.Komabe, chifukwa cha kusiyanasiyana kwa zida zowotcherera, kusankha kwa gasi wowotcherera kumakhala kovuta munjira zenizeni zowotcherera.Pamafunika kulingalira mozama za zida zowotcherera, njira zowotcherera, malo owotcherera, ndi zotsatira zomwe mukufuna.Kusankhidwa kwa mpweya wabwino kwambiri wowotcherera kungadziwike mwa kuyesa kuwotcherera kuti mukwaniritse zotsatira zabwino kwambiri zowotcherera.
Kuwotcherera kwa Laser m'manja
Chiwonetsero cha Kanema |Kuyang'ana kwa Handheld Laser Welding
Kanema 1 - Dziwani Zambiri Zokhudza Handheld Laser Welder
Video2 - Kuwotcherera Kosiyanasiyana kwa Laser Pazofunikira Zosiyanasiyana
Analimbikitsa Handheld Laser Welder
Mafunso aliwonse okhudza Kuwotcherera m'manja Laser?
Nthawi yotumiza: May-19-2023