Nitrogen reflow soldering inzira yekuzadza kamuri yekuyerera negesi yenitrogen kuitira kudzivirira kupinda kwemhepo muovheni yekuyerera kudzivirira oxidation yechikamu chetsoka panguva yekuyerera patsva.Kushandiswa kwe nitrogen reflow kunonyanya kuwedzera kunaka kwekutengesa, kuitira kuti soldering iitike munzvimbo ine yakaderera zvikuru oksijeni content (100 PPM) kana zvishoma, izvo zvinogona kudzivirira dambudziko re oxidation yezvikamu.Naizvozvo nyaya huru yenitrogen reflow soldering ndeyekuona kuti iyo oxygen yemukati yakadzikira sezvinobvira.
Nekuwedzera kwehuwandu hwekusangana uye nekubuda kweFine pitch assembly tekinoroji, iyo nitrogen reflow process uye michina yakagadzirwa, iyo yakavandudza kunaka kwekutengesa uye goho re reflow soldering uye yave nzira yekusimudzira ye reflow soldering.Guangshengde kutaura nezve nitrogen reflow soldering ine zvinotevera zvakanakira.
(1) Kudzivirira uye kuderedza oxidation.
(2) kunatsiridza solder wetting simba uye mhanyisa kumhanya wetting.
(3) kuderedza kugadzirwa kwemarata ebhora, kudzivirira kubhuroka, kuti uwane kunaka kuri nani kwewelding.
Asi kuipa kwayo ndiko kuwedzera kuri pachena kwemutengo, kuwedzera kwemutengo uyu nehuwandu hwenitrogen, kana iwe uchifanira kusvika 1000ppm okisijeni yemukati muchoto ine 50ppm okisijeni yemukati, iyo general nitrogen yemukati bvunzo ndeyekutsigira online type oxygen content analyzer. , oxygen content test principle inoitwa neoxygen content analyzer yakatanga kubatanidzwa kuburikidza ne nitrogen reflow soldering point point, yozotora gasi, mushure meoxygen content analyzer test The oxygen content value inoongororwa kuti iwane nitrogen content purity range.Nitrogen reflow soldering gasi rekuunganidza nzvimbo dzinenge imwe chete, yepamusoro-yekupedzisira nitrogen reflow soldering magasi ekuunganidza mapoinzi ane anopfuura matatu, welding chigadzirwa zvinodiwa zvakasiyana pakudiwa kwenitrogen inyika yemusiyano.
Nokuda kwekuiswa kwe nitrogen mu reflow soldering, zvakakosha kuitisa kuongororwa kwemari-bhenefit, zvikomborero zvayo zvinosanganisira chibereko chechigadzirwa, kuvandudzwa kwehutano, rework kana kugadzirisa kuderedzwa kwemari, nezvimwewo. haiwedzere mari yekupedzisira, pane zvinopesana, tinogona kubatsirwa nayo, ikozvino yakajairika mvura nitrogen, kune nitrogen michina, nitrogen kusarudzwa kunowedzerawo kushanduka.
Yakawanda sei PPM yeokisijeni yakakodzera muvira renitrogen?
Mabhuku akakodzera anopikisa kuti pasi pe1000PPM kupinda mukati kuchava kwakanaka kwazvo, 1000-2000PPM ndiyo inonyanya kushandiswa, asi kushandiswa kwechokwadi kwehuwandu hwemaitiro uchishandisa 99.99% iyo 100PPM nitrogen, uye kunyange 99.999% iyo 10PPM, uye vamwe vatengi. kunyangwe mukushandiswa kwe98% yenitrogen iyo iri 20,000PPM.chimwe chirevo cheOSP process, kaviri-sided welding, nePTH inofanira kunge iri pasi pe500PPM, nepo kuwedzera kwenhamba yezviyeuchidzo zvakamira kunokonzerwa nekutadza kudhinda kwechokwadi.
Mazhinji echoto anoshandiswa nhasi ndeemhando yekumanikidza inopisa kutenderera kwemhepo, uye harisi basa riri nyore kudzora kushandiswa kwenitrogen muvira rakadaro.Pane nzira dzakati wandei dzekudzikisa huwandu hwekushandisa nitrogen: imwe ndeyekudzikisa nzvimbo yekuvhura yekupinza uye kutumira kunze kwechoto, zvakakosha kushandisa mapartitions, maketeni kana zvimwewo zvishandiso kudzivirira chikamu chekupinza uye kutumira kunze kwenyika. iyo isingashandiswi, imwe ndeye kushandisa chirevo chekuti inopisa nitrogen layer yakareruka kupfuura mhepo uye isinganyanyi kusanganisa, pakugadzira choto kuita imba yekudziya kupfuura yekuunza uye kunze kwenyika yakakwira, kuitira kuti imba yekudziya iumbe. yakasikwa nitrogen layer, iyo inoderedza huwandu hwenitrogen muripo uye inoderedza huwandu hwenitrogen uye inoita kuti zvive nyore kusanganisa.Izvi zvinoderedza kuwanda kwenitrogen muripo uye kuchengetedza kuchena kunodiwa.
Nguva yekutumira: Aug-23-2022