Kuwotcherera komweko kwapakati pafupipafupi ndi njira yabwino kwambiri komanso yosunthika yomwe imapereka zabwino zambiri pamafakitale osiyanasiyana. M'nkhaniyi, tiwona mawonekedwe apadera ndi ubwino wa njira yowotcherera iyi.
Mid-frequency direct current (MFDC) spot welding yadziwika kwambiri m'makampani opanga zinthu chifukwa cha magwiridwe ake apamwamba komanso maubwino ambiri. Njirayi imadziwika ndi kugwiritsa ntchito ma Direct current (DC) pamayendedwe apakatikati, nthawi zambiri pakati pa 1000 Hz ndi 100,000 Hz. Njira yolondola komanso yoyendetsedwa bwino yowotcherera ili ndi zinthu zingapo zochititsa chidwi.
1. Kulondola ndi Kuwongolera
Chimodzi mwazinthu zazikulu za kuwotcherera kwa malo a MFDC ndi kulondola kwake komanso kuwongolera kwake. Pogwiritsa ntchito DC pamayendedwe apakatikati, ma welder amatha kupeza zotsatira zolondola komanso zosasinthika. Kulondola kumeneku kumakhala kopindulitsa makamaka pogwira ntchito ndi zipangizo zoonda kapena zovuta, chifukwa zimachepetsa chiopsezo cha kuwonongeka ndikuonetsetsa kuti weld wapamwamba kwambiri.
2. Malo Ochepa Okhudzidwa ndi Kutentha (HAZ)
MFDC kuwotcherera mawanga kumapangitsa kutentha pang'ono panthawi yowotcherera poyerekeza ndi njira zachikhalidwe. Izi zimapangitsa kuti pakhale malo ang'onoang'ono omwe amakhudzidwa ndi kutentha (HAZ), yomwe ndi yofunika kwambiri kuti zinthu zoyambira zikhale zolimba. HAZ yochepetsedwa imachepetsa kupotoza komanso chiwopsezo cha kusintha kwazitsulo, ndikupangitsa kuti ikhale chisankho chabwino pakugwiritsa ntchito komwe mphamvu ndi katundu ziyenera kusungidwa.
3. Mphamvu Mwachangu
Welding yapakati pafupipafupi ndiyopanda mphamvu kwambiri. Kugwiritsa ntchito magetsi othamanga kwambiri a AC m'makina owotcherera a MFDC amalola kuwongolera moyenera mphamvu zamagetsi. Izi sizimangochepetsa kugwiritsa ntchito mphamvu komanso zimathandizira kuti pakhale ndalama zowonongera nthawi yayitali.
4. Mofulumira Kuwotcherera Kuzungulira
MFDC kuwotcherera malo kumadziwika chifukwa chowotcherera mwachangu. Kuchuluka kwazomwe zikuchitika pano kumathandizira kusungunuka mwachangu komanso kulimba kwa dziwe la weld, zomwe zimapangitsa kuti nthawi yopanga ikhale yofulumira. Uwu ndi mwayi waukulu m'malo opanga zinthu zambiri.
5. Kusinthasintha
Makina owotcherera a MFDC ndi osinthika kwambiri ndipo amatha kusinthidwa kuti agwirizane ndi ntchito zosiyanasiyana zowotcherera. Amatha kuwotcherera zinthu zosiyanasiyana, kuphatikiza zitsulo zosiyanasiyana, ndipo amatha kutengera makulidwe osiyanasiyana. Kusinthasintha kumeneku kumapangitsa kuwotcherera kwa MFDC kukhala koyenera m'mafakitale osiyanasiyana, kuyambira kupanga magalimoto mpaka kupanga zamagetsi.
6. Ubwino ndi Kusasinthasintha
Kusasinthika ndikofunikira pakupanga, ndipo kuwotcherera kwa MFDC kumapambana pankhaniyi. Kuwongolera kolondola pazigawo zowotcherera kumawonetsetsa kuti ma welds yunifolomu nthawi yonse yopangira, kuchepetsa kufunika kokonzanso ndikuwonjezera mtundu wonse wazinthu zomalizidwa.
Kuwotcherera komweko kwapakati pafupipafupi kumawonekera ngati njira yabwino kwambiri yowotcherera pazinthu zosiyanasiyana chifukwa chakulondola kwake, kuwongolera, kuwongolera mphamvu, komanso kusinthasintha kwake. Kutha kwake kupanga ma welds apamwamba kwambiri okhala ndi madera ochepa omwe amakhudzidwa ndi kutentha kumapangitsa kukhala njira yabwino kwa mafakitale omwe amafunikira magwiridwe antchito komanso kusasinthika. Pamene luso laukadaulo likupitilira kupita patsogolo, kuwotcherera kwa malo a MFDC kukuyenera kukhalabe mwala wapangodya pakupanga kwamakono, zomwe zikuthandizira kuchulukirachulukira komanso kupulumutsa ndalama.
Nthawi yotumiza: Oct-11-2023
