Resistance spot kuwotcherera ndi njira yomwe imagwiritsidwa ntchito kwambiri popanga, makamaka m'mafakitale amagalimoto ndi zakuthambo, komwe kufunikira kwa ma welds amphamvu komanso odalirika ndikofunikira kwambiri. Njirayi imaphatikizapo kugwiritsa ntchito magetsi ndi kukakamiza kuti agwirizane ndi zidutswa ziwiri zazitsulo. Chimodzi mwazinthu zofunika kwambiri pakuwotcherera malo ndi nthawi yowotcherera, yomwe imakhala ndi gawo lalikulu pakuzindikira mtundu ndi mphamvu ya weld. M'nkhaniyi, tiwona ubale wovuta kwambiri pakati pa nthawi yowotcherera ndi kusamuka kwa ma elekitirodi, kuwunikira zinthu zomwe zimakhudza mphamvuyi.
Resistance spot kuwotcherera, komwe nthawi zambiri kumadziwika kuti kuwotcherera kwa malo, ndi njira yolumikizirana yomwe imadalira kutentha komwe kumapangidwa ndi kukana kwamagetsi polumikizana pakati pa zidutswa ziwiri zachitsulo. Ma elekitirodi amagwiritsidwa ntchito kukakamiza kukakamiza komanso apano kuti apange nugget ya weld. Kutalika kwa nthawi yomwe ikuyenda, yomwe imadziwika kuti nthawi yowotcherera, ndiyomwe imapangitsa kuti ntchito yowotcherera ikhale yopambana.
Nthawi Yowotcherera ndi Zotsatira Zake
Nthawi yowotcherera imakhudza mwachindunji kukula ndi mtundu wa weld nugget. Nthawi zowotcherera zazitali zimabweretsa zowotcherera zazikulu komanso zazitali, pomwe zazifupi zimatulutsa zowotcherera zing'onozing'ono, zosazama. Ubale pakati pa nthawi yowotcherera ndi kusamutsidwa kwa ma elekitirodi ndizovuta ndipo zimatengera zinthu zosiyanasiyana, kuphatikiza zinthu zakuthupi, geometry ya electrode, ndi kuwotcherera pano.
Zinthu Zomwe Zimayambitsa Kusamuka kwa Electrode
a. Makulidwe a Zinthu:Zida zokhuthala nthawi zambiri zimafunikira nthawi yayitali yowotcherera kuti zitsimikizire kulowa bwino komanso kuphatikizika. Pamene nthawi yowotcherera ikuchulukirachulukira, kusuntha kwa ma elekitirodi kumawonjezekanso kuti kukhale ndi kutentha kowonjezera ndi kukakamiza kofunikira.
b. Mphamvu ya Electrode:Mphamvu yogwiritsidwa ntchito ndi ma elekitirodi imakhudza kusamuka kwa ma elekitirodi. Mphamvu zama elekitirodi apamwamba zimatha kupangitsa kuti ma elekitirodi asunthike mwachangu chifukwa cha kupanikizika kwakukulu, zomwe zimapangitsa kuti nthawi yowotcherera ifupikitsidwe.
c. Mapangidwe a Electrode:Maonekedwe ndi kukula kwa ma elekitirodi amagwira ntchito yofunika kwambiri. Mapangidwe osiyanasiyana a ma elekitirodi amatha kukhala ndi zotsatira zosiyanasiyana pakusuntha kwa ma elekitirodi, ngakhale pa nthawi yowotcherera yomweyi.
d. Welding Panopa:Kuchuluka kwa kuwotcherera komweko kumakhudza liwiro lomwe ma weld nugget amapanga. Mafunde okwera nthawi zambiri amapangitsa kuti ma elekitirodi asunthike mwachangu komanso nthawi yayitali yowotcherera.
Kumvetsetsa mgwirizano pakati pa nthawi yowotcherera ndi kusuntha kwa ma electrode ndikofunikira kuti mukwaniritse ma welds okhazikika komanso apamwamba kwambiri. Opanga amatha kuwongolera ubalewu posintha magawo azowotcherera ndikusankha mosamala zida ndi mapangidwe a electrode.
M'malo oletsa kuwotcherera malo, ubale pakati pa nthawi yowotcherera ndi kusamuka kwa ma elekitirodi ndi wamphamvu komanso wosiyanasiyana. Monga tawonera, zinthu monga makulidwe azinthu, mphamvu ya ma elekitirodi, kapangidwe ka ma elekitirodi, ndi zida zowotcherera zonse zimalowa. Kudziwa ubalewu ndikofunikira kuti mupange ma welds odalirika komanso olimba m'mafakitale osiyanasiyana. Ofufuza ndi mainjiniya akupitilizabe kufufuza ndikuwongolera kulumikizana uku kuti athe kukankhira malire a zomwe zingatheke mdziko la kuwotcherera mawanga.
Nthawi yotumiza: Sep-15-2023
