Momwe Mungasankhire Gasi Woteteza Woyenera Kugwiritsa Ntchito Waya Wanu Wolimba wa MIG

Kusankha mpweya woteteza wolakwika kungakusiyeni ndi ma weld odzaza ndi ma porosity, ma spatter, kapena mphamvu yofooka—ngakhale mukugwiritsa ntchito waya wolimba wa MIG ndi zida zake. Mpweya woteteza wa MIG ungawoneke wosawoneka bwino, koma ndi "njira yosawoneka ya kiyi" yomwe imakhudza mwachindunji mawonekedwe a arc, njira zosamutsira zitsulo, ndi mawonekedwe omaliza a makina a weld. Pansipa, tikambirana njira yosavuta yosankha kuti ikuthandizeni kusankha mpweya woteteza woyenera kugwiritsa ntchito.

Ndondomeko Yosankha: Pezani Mpweya Wanu Wabwino Kwambiri Woteteza

Tikambirana mafunso atatu ofunikira kuti tichepetse zomwe mungasankhe. Palibenso zongoganizira—kungosankha zomwe mukufuna malinga ndi zosowa zanu zenizeni.

Funso 1: Kodi Mukuwotcherera Zinthu Zotani?

Zinthu zofunika kwambiri ndi zinthu zofunika kwambiri. Tiyeni tiyambe ndi zinthu zodziwika bwino ndipo tiyambe kugwiritsa ntchito zitsulo zapadera.

Chitsulo Chofatsa (Chinthu Chofala Kwambiri)

Pa gasi wowotcherera chitsulo chofewa pogwiritsa ntchito waya wolimba wa MIG, pali njira ziwiri zomwe zikupezeka pamsika. Umu ndi momwe zimagwirira ntchito:

Mpweya wa C25 (75% Ar, 25% CO2) – Chisankho Choyamba Chapadziko Lonse

Chifukwa chake imagwira ntchito: Kusakaniza kwa argon CO2 kumeneku kumapereka arc yokhazikika, kutayika kochepa kwa welding, komanso mawonekedwe osalala a weld—kuthetsa mavuto akulu a welding yachitsulo chofatsa. Kumachepetsa kutayika kwa zinthu za alloy, kumawonjezera mphamvu yolimba ya weld, ndipo kumagwira ntchito pazinthu zambiri, kuyambira mapepala opyapyala mpaka mbale zokhuthala. Kaya mukuchita short-circuit kapena spray transfer, C25 imasunga njirayi kukhala yoyera komanso yowongoka.C25

Zabwino Kwambiri: Ntchito zambiri zachitsulo chofewa zomwe zimakhala ndi ubwino, mawonekedwe, ndi kusavuta kugwiritsa ntchito.

CO2 Yoyera - Kusinthanitsa Kopulumutsa Mtengo

Chifukwa chake imagwiritsidwa ntchito: CO2 yoyera ndi yotsika mtengo kwambiri kuposa mpweya wosakanikirana, zomwe zimapangitsa kuti ikhale yokongola pantchito zambiri komanso yokhala ndi bajeti yochepa. Imaperekanso kulowa kwakuya, komwe kumathandiza pakuwotcherera mbale zokhuthala popanda kupendekera. Kusinthana: Yembekezerani mzere "wovuta", kuwotcherera kwambiri, komanso malo owundana. Mudzagwiritsa ntchito nthawi yowonjezera pakuyeretsa pambuyo pa kuwotcherera, ndipo kutayika kwa alloy kumakhala kwakukulu poyerekeza ndi C25.

Zabwino Kwambiri: Chitsulo chofewa chokhuthala chomwe mawonekedwe ake si ofunikira kwambiri ndipo mtengo wake ndi chinthu chofunika kwambiri.

Malangizo aukadaulo: Ngati mumagwiritsa ntchito chitsulo chofewa kwambiri ndipo mukufuna njira yoyera komanso yopanda mavuto, yambani ndi C25. Ndiyo njira yogwiritsidwa ntchito kwambiri pakugwiritsa ntchito waya wolimba wa MIG.

Chitsulo chosapanga dzimbiri

Mpweya wowotcherera wa chitsulo chosapanga dzimbiri uyenera kusunga kukana dzimbiri ndikuwonetsetsa kuti weld ikuwoneka bwino. Argon yoyera sigwira ntchito pano—imapangitsa kuti weld isanyowe bwino komanso kuti isawonongeke.成形Sankhani mpweya wosakaniza katatu monga Ar + 2-5% CO2 + 1-2% O2 kapena Ar + 90% He + 2.5% CO2. Izi zimasakaniza kuchepetsa mphamvu ya pamwamba pa chitsulo chosungunuka, zimathandizira kufalikira kwa weld, komanso zimachepetsa kutayika kwa alloy, zomwe zimapangitsa kuti chitetezo cha chitsulo chosapanga dzimbiri chikhale cholimba.

Aluminiyamu

Aluminiyamu imafuna argon yoyera kapena argon-helium yosakaniza. Ntchito yayikulu ya Argon ndikuyeretsa filimu ya aluminiyamu oxide (yofunikira pa ma weld amphamvu) ndikukhazikitsa arc. Kuwonjezera helium kumawonjezera kutentha, komwe kumathandiza ndi magawo olimba a aluminiyamu mwa kuwonjezera kulowa ndi liwiro la kuwotcherera. Pewani CO2 kapena O2 iliyonse mu mpweya woteteza aluminiyamu—ingayambitse ma porosity ndi ma weld ofooka.

Funso 2: Ndi Zinthu Ziti Zosefera Zomwe Mumaziika Patsogolo?

Kusankha kwanu mpweya kumakhudza mwachindunji momwe weld yanu imaonekera komanso momwe imagwirira ntchito. Gwirizanitsani mpweya ndi zinthu zomwe mukufuna kwambiri:

• Mukufuna mikanda yolumikizira yokulirapo komanso yozama pang'ono (yabwino kwambiri pamapepala opyapyala)? Gwiritsani ntchito chiŵerengero chapamwamba cha argon - chimafewetsa arc ndikuletsa kupsa.
• Mukufuna kulowa mozama kuti mbale zokhuthala zilowe? CO2 yeniyeni kapena CO2 yochulukirapo imapereka kutentha kwakukulu.
• Mukufuna kuotcherera mwachangu? Argon-helium mixes kapena C25 amalola amperage yambiri popanda kutsanulira madzi ambiri, zomwe zimawonjezera ntchito.
• Kodi simukufuna kuyeretsa pambuyo pa kusungunula? C25 kapena zosakaniza zina zokhala ndi argon zimachepetsa kwambiri kutayikira kwa kusungunula, zomwe zimakupulumutsirani nthawi yopera ndi kumaliza.

Funso 3: Kodi Bajeti Yanu Ndi Yotani?

Tiyeni tizichita zinthu mwanzeru—ndalama zomwe zimagwiritsidwa ntchito pokonza bajeti zimatipangitsa kusankha zinthu zambiri. Nayi njira yeniyeni yowerengera ndalama, kupatula mtengo wa mafuta okha:

• CO2 Yoyera: Mtengo wotsika kwambiri wa gasi woyambirira, koma mtengo wokwera wa nthawi yayitali chifukwa cha nthawi yowonjezera yoyeretsa komanso kuchuluka kwa zinyalala za waya zolimba za MIG.
• Gasi wa C25: Mtengo wa gasi ndi wokwera kuposa CO2 yeniyeni, koma mtengo wake wonse ndi wotsika chifukwa cha liwiro lotha kuwotcherera mwachangu komanso kukonzanso pang'ono. Sipakufunika zida zowonjezera—silinda imodzi yokha yosakaniza.
• Zosakaniza zitatu kapena argon-helium: Mtengo wokwera wa zipangizo zapadera, koma ndikofunikira kupewa kulephera kwa weld kokwera mtengo.

Nayi njira: Ngati muli ndi bajeti yochepa koma mumagwiritsa ntchito zitsulo zochepa kwambiri, CO2 yeniyeni ndi yotheka—ingoganizirani nthawi yoyeretsa. M'masitolo ambiri, C25 imapereka ndalama zabwino kwambiri komanso magwiridwe antchito.

Malangizo Ofunika: Musawononge Gasi Yabwino Pokhala ndi Kukhazikitsa Koyipa

Ngakhale mpweya woteteza bwino sudzapulumutsa chotchingira chanu ngati muwononga kuchuluka kwa mpweya kapena kuuma kwa mpweya. Izi sizingakambiranedwe:

Kuchuluka kwa Mpweya (CFH/LPM)

Kuchepa kwa madzi kumateteza weld yanu (kumayambitsa kubowola kwa weld); kuchuluka kwambiri kumabweretsa kugwedezeka (kuyamwa mpweya, komanso kumayambitsa kubowola). Pa ma waya ambiri olimba a MIG:

• Chitsulo chofewa (C25 kapena CO2 yeniyeni): 15-25 LPM (30-50 CFH)
• Chitsulo chosapanga dzimbiri (chosakanikirana ndi zitatu): 18-28 LPM (38-60 CFH)
• Aluminiyamu (argon/argon-helium): 20-30 LPM (42-63 CFH)

Kuuma kwa mpweya

Chinyezi chomwe chili mu mpweya woteteza mpweya ndi chakupha mwakachetechete. Chimayambitsa kusweka kwa weld komanso kufooketsa weld. Nthawi zonse gwiritsani ntchito chowumitsira/fyuluta mu mpweya wanu, ndipo onetsetsani kuti masilinda anu ali pamwamba pa 0.5 MPa (70 psi)—pansi pa kupanikizika kumeneku, chinyezi ndi zinyalala zimalowa mu mpweya.

Mfundo Yomaliza & Gawo Lotsatira

Lamulo lalikulu: Gwirizanitsani mpweya wanu woteteza ndi zinthu zanu, sungani mtundu ndi mtengo wake, ndipo nthawi zonse onetsetsani kuti mpweya waperekedwa bwino komanso mokwanira. Chitani izi moyenera, ndipo cholimba chanu chikhale bwino.Waya wa MIGidzachita bwino kwambiri.

Mukasankha mpweya woyenera woteteza, kusankha waya wolimba wa MIG wabwino kwambiri womwe umagwirizana ndi mpweya ndi zinthu zanu ndiye gawo lotsatira kuti mupambane kuwotcherera. Waya wolimba wa MIG wabwino umatsimikizira kuti mankhwala ake ndi okhazikika komanso kuti wayawo ukhale wosalala—wogwira ntchito mogwirizana ndi mpweya wanu woteteza womwe mwasankha mosamala kuti mupereke ma weld olimba nthawi zonse.