Kamar yadda Sn sinadaran dauke da shi ne fiye da 95% a cikin SnAgCu gubar-free solder , don haka a kwatanta da gargajiya solder , da karuwa da sinadaran Sn da kuma yawan zafin jiki na Lead-free soldering tsari zai kai ga hadawan abu da iskar shaka na solder karuwa .Kafin rage hadawan abu da iskar shaka na solder slag, dross, dole ne mu fara fahimtar iri da gyare-gyaren matakai.
Za a yi la'akari da waɗannan guda uku:
(1) Matsayin da ke tsaye na fim din oxide, wannan lamari ne na dabi'a na Sn oxide, idan dai fim din oxide bai karye ba, tun da zai hana kara samar da adadin oxidation.Kamar yadda aka nuna a kasa:
(2) Black foda, a sakamakon gogayya na high-gudun juyawa impeller shaft da Sn oxide fim, shi ne spheroidizing samfurin samar, da kuma barbashi ne ya fi girma.Kamar yadda aka nuna a hoton da ke ƙasa:
(3) Ragowar wake na wake, ya kasance a cikin bututun bututun ruwa na raƙuman ruwa mai ruɗani da igiyar zaman lafiya, lissafin mafi yawancin nauyin oxide slag.
Bean curd ragowar ya haifar da mummunan matsa lamba oxygen zuwa karas slag, da waterfall sakamako a hade sakamakon daban-daban dalilai, da takamaiman tsauri tsari ne kamar haka:
Wurin baƙar fata shine yanayin mu'amalar iska, ruwan zafin jiki yana faɗuwa farin Sn.t = t3 adadi za mu iya ganin wani ɗan ƙaramin yanki na iska yana haɗiye a cikin maganin solder, ƙaramin yanki na iska saboda saurin iskar oxygen da ke cikin kwano zai fito amma ba zai iya kawar da iskar N2 ba, don haka ya zama ƙwallo mara kyau. , Tun da yawan ƙwallo mai zurfi ya fi na tin ƙanƙanta, tin surface na daure zai fito lokacin da waɗannan ƙwallo maras tushe sau ɗaya taru ta zama tana iyo a cikin ragowar kwandon wake.
Sanin abubuwan da ke haifar da nau'in gwangwani, mun yi imanin cewa rage samuwar ragowar wake na wake shine rage yawan igiyar ruwa mai ɗorewa mafi inganci.Daga sama za a iya ganin tsauri tsari: m na solder bukukuwa ne biyu zama dole yanayi:
Abu na farko da ake bukata shine tasirin iyaka, saman tin tare da mirgina mai ban mamaki, samar da phagocytosis.
Abu na biyu da ake buƙata shine ƙwallon rami a ciki don samar da fim ɗin oxide mai yawa, iskar nitrogen ta kasance a cikin kunshin.In ba haka ba, yana yawo a saman mai siyar lokacin da ƙwallon rami zai karye, ba zai iya samar da "sauran wake na wake ba."
Waɗannan sharuɗɗan guda biyu na wajibi ne.
Matakan rage datti a cikin sayar da igiyar ruwa suna nuna kamar haka:
1.Rage ratar da ake samu lokacin da ake canza igiyar ruwa, wanda zai rage ƙoƙarce-ƙoƙarcen solder bump don rage jujjuyawar, don haka rage haɓakar phagocytosis.
Don haka mun canza sashin giciye na tukunyar siyar a cikin trapezoid, kuma muka sanya igiyar farko har zuwa kusa da gefen tukunyar siyar.
2. A cikin duka biyun na farko da igiyar ruwa na biyu muna ƙara na'urar shingen da ba a tace ba zuwa ga mai siyar da tumbling-flow.
3. Ɗauki kariyar N2 don guje wa haɓakar ƙwayar oxide mai yawa a cikin ƙwallon solder.
Lokacin aikawa: Maris 22-2022