Zvinhu zvinokanganisa kunaka kwe reflow soldering ndezvizvi zvinotevera
1. Kufurira zvinhu zve solder paste
Hunhu hwe reflow soldering hunokonzerwa nezvinhu zvakawanda.Chinhu chinonyanya kukosha ndeye tembiricha curve ye reflow furnace uye kuumbwa paramita ye solder paste.Ikozvino iyo yakajairika yakakwira performance reflow welding furnace yakakwanisa kudzora uye kugadzirisa tembiricha curve nemazvo.Kusiyana neizvi, muchimiro chepamusoro density uye miniaturization, solder paste kudhinda kwave kiyi ye reflow soldering mhando.
Iyo particle shape ye solder paste alloy poda inoenderana nemhando yewelding yeyakatetepa spacing midziyo, uye viscosity uye kuumbwa kwe solder paste kunofanirwa kusarudzwa nemazvo.Pamusoro pezvo, solder paste inowanzo chengetwa munzvimbo inotonhora, uye chivharo chinogona kuvhurwa chete kana tembiricha yadzoserwa kune tembiricha yekamuri.Kunyanya kutarisisa kunofanirwa kubhadharwa kudzivirira kusanganisa solder paste nemhute yemvura nekuda kwekusiyana kwekushisa.Kana zvichidikanwa, sanganisa solder paste nemusanganisi.
2. Pesvedzero yemidziyo yewelding
Dzimwe nguva, iyo vibrate yebhandi rekutakura reflow welding michina zvakare chimwe chezvinhu zvinokanganisa kunaka kwewelding.
3. Pesvedzero yereflow welding process
Mushure mekubvisa iyo isina kujairika mhando ye solder paste kudhinda maitiro uye SMT maitiro, reflow soldering process pachayo inozotungamira kune anotevera emhando abnormalities:
① Mukutonhoresa welding, tembiricha yekudzoreredza yakadzikira kana kuti nguva yekuyerera haina kukwana.
② Tembiricha iri munzvimbo yepreheating yetin bead inokwira nekukurumidza (kazhinji, kutsetseka kwekukwira kwekushisa kuri pasi pe3 madhigirii pasekondi).
③ Kana bhodhi redunhu kana zvikamu zvakakanganiswa nehunyoro, zviri nyore kukonzeresa kuputika kwetin uye kuburitsa tini inoenderera.
④ Kazhinji, tembiricha munzvimbo yekutonhodza inodonha nekukurumidza (kazhinji, tembiricha inodonha yekudonha kwe lead welding isingasviki 4 degrees pasekondi).
Nguva yekutumira: Sep-10-2020