Powotcherera, cholinga chake ndi kupanga mgwirizano wolimba, wopanda msoko pakati pa zidutswa ziwiri zazitsulo.Kuwotcherera kwa MIG ndi njira yosunthika yomwe imatha kugwiritsidwa ntchito powotcherera zitsulo zosiyanasiyana.Kuwotcherera kwa MIG ndi njira yabwino yolumikizira zida pamodzi.Komabe, ngati makonda olakwika agwiritsidwa ntchito, porosity imatha kulowetsedwa mu weld.Izi zingayambitse mavuto ndi mphamvu ndi kukhulupirika kwa weld.
Mu artical iyi, tiwona zina zomwe zimayambitsa porosity mu kuwotcherera kwa MIG ndi momwe tingapewere.
Kodi Chimayambitsa Porosity mu MIG Welding?
Porosity ndi mtundu wa vuto la kuwotcherera lomwe limatha kuchitika mu welds.Zimawoneka ngati mabowo ang'onoang'ono mu weld ndipo zimatha kufooketsa mgwirizano pakati pa zidutswa ziwiri zazitsulo.Porosity ikhoza kuyambitsidwa ndi zinthu zosiyanasiyana, kuphatikizapo:
1) Fusion Yosakwanira
Izi zimachitika pamene kuwotcherera arc sikumasungunuka kwathunthu zitsulo zoyambira ndi zodzaza.Izi zikhoza kuchitika ngati makina owotchera sanakhazikitsidwe ku amperage olondola kapena ngati nyali yowotchererayo siigwira pafupi ndi chitsulo.
2) Kusakwanira kwa Gasi
Kuwotcherera kwa MIG kumagwiritsa ntchito mpweya wotchinga kuteteza kuwotcherera ku mpweya ndi zowononga zina.Ngati mpweya wotuluka ndi wotsika kwambiri, porosity imatha kuchitika.Izi zikhoza kuchitika ngati chowongolera gasi sichinakhazikitsidwe bwino, kapena ngati pali kutayikira mu payipi ya gasi.
3) Kutsekera kwa Gasi
Chifukwa china cha porosity ndi kutsekeka kwa gasi.Izi zimachitika pamene madontho a gasi atsekeredwa mu dziwe la weld.Izi zikhoza kuchitika ngati muuni wowotcherera sunagwiridwe pa ngodya yoyenera kapena ngati pali mpweya wotchinga wochuluka.
4) Dothi Ndi Zowonongeka
Porosity imathanso kuyambitsidwa ndi kuipitsidwa kwazitsulo zoyambira kapena zodzaza.Dothi, dzimbiri, utoto, ndi zonyansa zina zingayambitsenso porosity.Izi zikhoza kuchitika ngati chitsulocho sichili choyera chisanayambe kuwotcherera, kapena ngati pali dzimbiri kapena utoto pamwamba.Zowonongekazi zimatha kulepheretsa weld kuti asagwirizane bwino ndi zitsulo.
5) Gasi Woteteza Wosakwanira
Chifukwa china cha porosity ndi kusakwanira kwa mpweya woteteza.Izi zikhoza kuchitika ngati mpweya wolakwika umagwiritsidwa ntchito powotcherera kapena ngati mpweya wotuluka sunakhazikitsidwe bwino.
Kodi Mungapewe Bwanji Porosity Kuti Isachitike Panthawi Yowotcherera MIG?
Pali zinthu zingapo zomwe mungachite kuti mupewe porosity kuti isachitike panthawi ya kuwotcherera kwa MIG:
1. Gwiritsani ntchito zoikamo zolondola: Onetsetsani kuti mukugwiritsa ntchito makonda olondola pamakina anu owotcherera.Amperage ndi voteji ziyenera kukhazikitsidwa molingana ndi malangizo a wopanga.
2. Gwiritsani ntchito mpweya wolondola: Onetsetsani kuti mukugwiritsa ntchito mpweya woyenerera powotcherera.Argon imagwiritsidwa ntchito kuwotcherera MIG.
3. Kuthamanga kwa mpweya: Khazikitsani kuchuluka kwa gasi molingana ndi malangizo a wopanga.Mpweya wochuluka kapena wochepa kwambiri ungayambitse porosity.
4. Sungani tochiyo pa ngodya yoyenera: Onetsetsani kuti mwagwira nyaliyo moyenerera kuti musatseke mpweya.Nyaliyo iyenera kuchitidwa pamtunda wa madigiri 10 mpaka 15 kuchokera pamwamba pazitsulo.
5. Gwiritsani ntchito zitsulo zoyera: Onetsetsani kuti mukugwiritsa ntchito zitsulo zoyera, zosaipitsidwa powotcherera.Dothi lililonse, dzimbiri, kapena utoto uliwonse pamwamba ungayambitse porosity.
6. Werani pamalo olowera mpweya wabwino: Werani pamalo olowera mpweya wabwino kuti musatseke mpweya.Gasi woteteza amatha kutsekeredwa m'malo otsekedwa.
Porosity ikhoza kupewedwa potsatira malangizo awa.Pogwiritsa ntchito makonzedwe olondola ndi kuwotcherera pamalo abwino mpweya wabwino, mukhoza kupewa vutoli.
Thandizo Wamba Pakukonza Porosity Welds
Pali njira zingapo zothandizira kukonza ma welds omwe akhudzidwa ndi porosity:
1. kuwotchereranso: Njira imodzi yodziwika bwino ndiyo kuwotchereranso malo okhudzidwawo.Izi zitha kuchitika mwa kuwotcherera pamalo omwe akhudzidwa ndi amperage apamwamba.
2. Mapulagi a porosity: Chithandizo china chodziwika ndi kugwiritsa ntchito mapulagi a porosity.Awa ndi ma disks ang'onoang'ono achitsulo omwe amaikidwa pamwamba pa mabowo mu weld.Mapulagi a porosity amatha kugulidwa m'masitolo ambiri ogulitsa zowotcherera.
3. Kupera: Njira ina ndiyo kugaya malo okhudzidwawo ndi kuwotchereranso.Izi zikhoza kuchitika ndi chopukusira m'manja kapena chopukusira ngodya.
4. Waya wowotcherera: Njira ina ndiyo kugwiritsa ntchito waya wowotcherera.Uwu ndi waya wopyapyala womwe umagwiritsidwa ntchito kudzaza mabowo mu weld.Waya wowotcherera amatha kugulidwa m'malo ambiri ogulitsa zowotcherera.
Porosity ikhoza kukonzedwa pogwiritsa ntchito imodzi mwazithandizo zodziwika bwino.Mwa kuwotchereranso malo kapena kugwiritsa ntchito mapulagi a porosity, mutha kukonza vutoli.
Nthawi yotumiza: Dec-23-2022