Mfundo yogwirira ntchito ya wave soldering, bwanji mugwiritse ntchito ma wave soldering?

Pali njira ziwiri zazikulu zogulitsira malonda - reflow ndi wave soldering.

Kuwotcha kwa mafunde kumaphatikizapo kudutsa solder pa bolodi yotenthedwa.Kutentha kwa board, kutentha ndi kuzizira mbiri (zopanda mzere), kutentha kwa soldering, waveform (yunifolomu), nthawi ya solder, kuthamanga, kuthamanga kwa bolodi, ndi zina zonse ndizofunikira zomwe zimakhudza zotsatira za soldering.Mbali zonse za mapangidwe a bolodi, mapangidwe, mawonekedwe a pad ndi kukula kwake, kutentha kwa kutentha, etc.

Zikuwonekeratu kuti wave soldering ndi njira yaukali komanso yovuta - ndiye bwanji mugwiritse ntchito njirayi?

Amagwiritsidwa ntchito chifukwa ndi njira yabwino komanso yotsika mtengo yomwe ilipo, ndipo nthawi zina ndiyo njira yokhayo yothandiza.Kumene zida zapabowo zimagwiritsidwa ntchito, ma wave soldering nthawi zambiri ndi njira yosankha.

Reflow soldering imatanthawuza kugwiritsa ntchito solder phala (kusakaniza kwa solder ndi flux) kulumikiza chinthu chimodzi kapena zingapo zamagetsi pazitsulo zolumikizana, ndi kusungunula solder kupyolera mu kutentha koyendetsedwa kuti mukwaniritse mgwirizano wokhazikika.Mavuni owonjezera angagwiritsidwe ntchito, nyali zowotcha za infuraredi kapena mfuti zotenthetsera ndi njira zina zowotcherera.Reflow soldering ili ndi zofunikira zochepa pa mawonekedwe a pad, shading, board orientation, kutentha kwa kutentha (kukadali kofunikira kwambiri), etc. Pazigawo zokwera pamwamba, nthawi zambiri zimakhala zabwino kwambiri - kusakaniza kwa solder ndi flux kumayikidwa kale ndi stencil kapena zina. makina opangira, ndipo zigawozo zimayikidwa m'malo mwake ndipo nthawi zambiri zimagwiridwa ndi phala la solder.Zomatira zitha kugwiritsidwa ntchito pazovuta, koma sizoyenera ndi magawo obowo - nthawi zambiri reflow si njira yosankha pamabowo.Mapulani ophatikizika kapena apamwamba kwambiri amatha kugwiritsa ntchito kusakaniza kwa reflow ndi ma wave soldering, ndi zigawo zotsogola zokha zomwe zimayikidwa mbali imodzi ya PCB (yotchedwa mbali A), kotero kuti akhoza kugulitsidwa pamphepete B. Kumene gawo la TH liyenera kulowetsedwa gawo lodutsa-bowo lisanalowetsedwe, chigawocho chikhoza kubwezeretsedwanso kumbali ya A.Zigawo zowonjezera za SMD zitha kuwonjezeredwa ku mbali ya B kuti zigulitsidwe ndi magawo a TH.Iwo omwe ali ndi chidwi kwambiri ndi ma waya apamwamba amatha kuyesa zosakaniza zovuta za ma solders osiyanasiyana osungunuka, kulola kuti mbali B ibwererenso isanayambe kapena itatha kutenthetsa, koma izi ndizosowa kwambiri.

Tekinoloje ya Reflow soldering imagwiritsidwa ntchito pazigawo zokwera pamwamba.Ngakhale kuti matabwa ambiri okwera pamwamba amatha kusonkhanitsidwa ndi manja pogwiritsa ntchito chitsulo chosungunula ndi waya wa solder, ndondomekoyi imachedwa pang'onopang'ono ndipo gululo likhoza kukhala losadalirika.Zida zamakono zamakono za PCB zimagwiritsa ntchito reflow soldering makamaka popanga misa, kumene makina osankha ndi malo amayika zigawo pamatabwa, zomwe zimakutidwa ndi phala la solder, ndipo ndondomeko yonseyi imakhala yokhazikika.