Sezvo Sn ingredients ine inopfuura 95% muSnAgCu lead-free solder, saka mukuenzanisa neyekare solder, kuwedzera kwezvigadzirwa zveSn uye tembiricha yeLead-free soldering process ichaita kuti oxidation ye solder iwedzere. kuderedza oxidation ye solder slag, marara, tinofanira kutanga tanzwisisa marudzi uye maitiro ekuumba.
Aya matatu anotevera anozoongororwa:
(1) Iyo static pamusoro peiyo oxide firimu, ichi chiitiko chechisikigo cheSn oxide, chero bedzi iyo oxide firimu isati yaputsika, sezvo yaizodzivirira kumwe kugadzirwa kwehuwandu hweoxidation.Sezvinoratidzwa pasi apa:
(2) Hupfu nhema, semhedzisiro yekukweshana kweyepamusoro-kumhanya inotenderera impeller shaft uye Sn oxide firimu, yaive spheroidizing chigadzirwa kugadzirwa, uye zvimedu zvakakura.Sezvinoratidzwa mumufananidzo uri pasi apa:
(3) Bhinzi curd yakasara, yainyanya kutenderedza mhuno yemafungu ane mhirizhonga uye mafungu erunyararo, inokonzeresa huremu hwese hwe oxide slag.
Bean curd yakasara yakakonzerwa neiyo yakaipa kumanikidza okisijeni kugera slag, uye mapopoma emvura mumusanganiswa wemhedzisiro yezvinhu zvakasiyana siyana, iyo chaiyo dhizaini maitiro ndeaya:
Iyo dema nzvimbo ndiyo yemhepo interface, tembiricha yemvura inodonha chena Sn.t = t3 chimiro chatinogona kuona chikamu chidiki chemhepo chichimedzwa pane solder solution, chikamu chidiki chemhepo nekuda kwekukurumidza oxidation yeokisijeni mukati metini ichapfuura asi haigone kubvisa N2 gasi, uye nekudaro inogadzira mabhora asina maburi. , Sezvo kuzara kwebhora regoro kuri kudiki pane kwerata, pamusoro pemarata anotozobuda kana bhora regoro iri ratunhidzwa kuita rinoyangarara pamusoro pebhinzi curd.
Kuziva zvikonzero uye tin kugadzira marudzi, isu tinotenda kuti kuderedza kuumbwa kweBean curd zvakasara ndiko kuderedza wave soldering tin slag zvakanyanya kushanda matanho.Kubva pane zviri pamusoro zvinogona kuoneka maitiro ane simba: buri remabhora ekutengesa zvinhu zviviri zvinodiwa:
Chekutanga chinodiwa ndiyo muganhu mhedzisiro, iyo tin pamusoro ine dramatic roll, ichigadzira phagocytosis.
Chechipiri chinodiwa ibhora remukati mukati kuti riite dense oxide film, iyo nitrogen gasi inoumbwa mukati mepakeji.Zvikasadaro inoyangarara pamusoro pepanotengeswa painotyoka bhora risingakwanise kugadzira "Bean curd residue."
Aya mamiriro maviri anodiwa anodiwa.
Matanho ekudzikisa marara mune wave soldering anoratidza seanotevera:
1.Kuderedza gap rinogadzirwa kana kushandura wave, izvo zvichaderedzwa reflow solder bump kuedza kuderedza mupumburu, nokudaro kuderedza chizvarwa che phagocytosis.
Saka isu takashandura chikamu chemuchinjiko chepoto solder kuita trapezoid, uye gadzira wave yekutanga kusvika padhuze nepamucheto wepoto inotengeswa.
2. Mumafungu ekutanga uye yechipiri wave tinowedzera iyo isina kusefa chipingamupinyi mudziyo kune inodonha-inoyerera solder.
3. Tora N2 kudzivirira kudzivirira chizvarwa che dense oxide membranes mu solder bhora.
Nguva yekutumira: Mar-22-2022