Resistance Heating mu Medium Frequency Inverter Spot Welding Machines ndi Zomwe Zimathandizira?

Kutentha kwa Resistance ndi njira yofunikira pamakina owotcherera ma frequency inverter spot, pomwe kukana kwamagetsi kwa zida zogwirira ntchito kumatulutsa kutentha panthawi yowotcherera. Nkhaniyi ikufuna kufufuza njira yowotchera ndikukambirana zinthu zosiyanasiyana zomwe zimakhudza momwe zimagwirira ntchito komanso momwe zimakhudzira kuwotcherera.

1. Resistance Heating Mechanism: M'makina owotcherera ma frequency a frequency inverter, kudutsa kwamagetsi apamwamba kudzera pazida zogwirira ntchito kumapangitsa kukana mu mawonekedwe olumikizana. Kukaniza kumeneku kumasintha mphamvu yamagetsi kukhala kutentha, zomwe zimapangitsa kutentha komweko komwe kumawotcherera. Kutentha kopangidwa ndi kutentha kwamphamvu kumagwira ntchito yofunika kwambiri pakupanga kusakanikirana koyenera ndikupanga nugget yolimba ya weld.
2. Zomwe Zimakhudza Kutentha Kwakanthawi: Zinthu zingapo zimakhudza mphamvu ya kutentha kwapakati pamakina apakati pafupipafupi inverter spot kuwotcherera. Zinthu izi ndi izi: a. Electrical Conductivity: Kuwongolera kwamagetsi kwa zida zogwirira ntchito kumakhudza kukana ndipo, chifukwa chake, kuchuluka kwa kutentha komwe kumapangidwa. Zipangizo zokhala ndi ma conductivity apamwamba amagetsi zimatsika kukana ndipo zimakonda kutulutsa kutentha pang'ono poyerekeza ndi zida zotsika kwambiri. b. Makulidwe a Zinthu: Zopangira zokhuthala zimawonetsa kukana kwambiri chifukwa cha njira yayitali, zomwe zimapangitsa kuti kutentha kuchuluke pakuwotcherera. c. Kukaniza Kulumikizana: Kulumikizana kwamagetsi pakati pa maelekitirodi ndi zida zogwirira ntchito kumakhudza kwambiri kutenthetsa kukana. Kulumikizana kosakwanira kumabweretsa kukana kwakukulu pamawonekedwe a electrode-workpiece, zomwe zimapangitsa kuchepa kwa kutentha komanso kusokoneza mtundu wa weld. d. Kuwotcherera Panopa: Kukula kwa kuwotcherera pakali pano kumakhudza mwachindunji kutentha komwe kumabwera chifukwa cha kutentha kwamphamvu. Mafunde okwera kwambiri amapangitsa kutentha kwambiri, pomwe mafunde otsika angapangitse kutentha kosakwanira komanso kupangika kosakwanira kwa weld. e. Nthawi Yowotcherera: Kutalika kwa ntchito yowotcherera kumakhudzanso kukana kutentha. Kuwotcherera kwa nthawi yayitali kumapangitsa kuti kutentha kupangike, zomwe zimapangitsa kuphatikizika bwino komanso ma welds amphamvu. Komabe, nthawi yayitali kwambiri yowotcherera imatha kuyambitsa kutentha kwambiri komanso kuwononga zida zogwirira ntchito. f. Mphamvu ya Electrode: Mphamvu yogwiritsidwa ntchito pakati pa ma elekitirodi imakhudza kukhudzana kwamagetsi ndipo, pambuyo pake, kutentha kwamphamvu. Mphamvu yokwanira ya ma elekitirodi imatsimikizira kulumikizana koyenera komanso kusamutsa kutentha koyenera, zomwe zimathandizira kuwongolera bwino kwa weld.
3. Zotsatira za Kutentha Kukanika: Kutentha kwamphamvu kumakhudza mwachindunji njira yowotcherera komanso mtundu wake wowotcherera. Zotsatira zazikulu ndi izi: a. Kutentha kwa Kutentha: Kutentha kwamphamvu kumapereka mphamvu yotenthetsera yofunikira kusungunula zida zogwirira ntchito, kutsogoza kuphatikizika ndi mapangidwe a weld nugget. b. Kufewetsa kwa Zinthu: Kutenthetsa komweko kuchokera ku kutentha kosasunthika kumafewetsa zida zogwirira ntchito, kulola kusinthika kwa pulasitiki ndikulimbikitsa kulumikizana kwa interatomic pamalo olumikizirana. c. Malo Okhudzidwa ndi Kutentha (HAZ): Kutentha komwe kumapangidwa panthawi yotentha kumakhudzanso zinthu zozungulira, zomwe zimapangitsa kuti pakhale malo okhudzidwa ndi kutentha (HAZ) omwe amadziwika ndi kusintha kwa microstructure ndi makina. d. Kulowetsedwa kwa Weld: Kuchuluka kwa kutentha komwe kumapangidwa chifukwa cha kutentha kwamphamvu kumakhudza kuya kwa kulowa kwa weld. Kuwongolera koyenera kwa kutentha kumatsimikizira kulowa mokwanira popanda kusungunuka mopitirira muyeso kapena kuwotcha.

Kutsiliza: Kutentha kwamphamvu ndi njira yofunikira pamakina owotcherera ma frequency a frequency inverter, omwe amatenga gawo lofunikira pakukwaniritsa kuphatikizika koyenera ndikupanga ma welds amphamvu. Kumvetsetsa limagwirira kukana Kutentha ndi kuganizira zinthu chikoka, monga madutsidwe magetsi, makulidwe zinthu, kukana kukhudzana, kuwotcherera panopa, nthawi kuwotcherera, ndi elekitirodi mphamvu, zimathandiza kulamulira njira kuwotcherera ndi kuonetsetsa zofunika kuwotcherera khalidwe ndi ntchito. Mwa kukhathamiritsa kutenthetsa kukana, opanga amatha kupititsa patsogolo mphamvu, kudalirika, komanso kusasinthika kwa ntchito zowotcherera pamalo pamafakitale osiyanasiyana.