{"id":4812,"date":"2026-03-18T08:49:06","date_gmt":"2026-03-18T08:49:06","guid":{"rendered":"https:\/\/flj-pcb.com\/?p=4812"},"modified":"2026-03-18T08:49:11","modified_gmt":"2026-03-18T08:49:11","slug":"difference-between-reflow-soldering-and-wave-soldering","status":"publish","type":"post","link":"https:\/\/flj-pcb.com\/bs\/difference-between-reflow-soldering-and-wave-soldering\/","title":{"rendered":"Razlika izme\u0111u reflow lemljenja i talasnog lemljenja"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Kratak pregled<\/h2>\n\n\n\n<p>Glavna razlika izme\u0111u reflow lemljenja i valnog lemljenja je sljede\u0107a: reflow lemljenje se koristi za plo\u010de koje imaju povr\u0161inske komponente, dok se valno lemljenje koristi za plo\u010de s provrznim komponentama. Reflow je jedan od tri glavna procesa u <a href=\"https:\/\/flj-pcb.com\/bs\/pcb-assembly\/smt-assembly\/\" data-type=\"page\" data-id=\"1923\">SMT<\/a> Postavljanje. Reflow uglavnom lemuje \u0161tampane plo\u010dice na kojima su ve\u0107 postavljeni dijelovi. Tokom reflow-a pasta za lemljenje se topi, a zatim hladi. Hla\u0111enje u\u010dvr\u0161\u0107uje dijelove i kontakte.<\/p>\n\n\n\n<p>U nastavku, odjeljak o opremi za reflow lemljenje kompanije Nitto obja\u0161njava tehni\u010dki princip reflow lemljenja. Tako\u0111er pru\u017ea detaljan uvid u tehnologiju postavljanja koja se koristi u SMT industriji. Nitto Denko reflow ma\u0161ine koriste modularan, digitalan i jednostavan dizajn za korisnika. Odlikuju se visokim performansama, pouzdano\u0161\u0107u, sigurno\u0161\u0107u, jednostavnim odr\u017eavanjem i jednostavnom upotrebom. Ove karakteristike poma\u017eu kupcima da smanje operativne tro\u0161kove. Tako\u0111er poma\u017eu kupcima da pravovremeno proizvode kvalitetne proizvode. Za proizvode za valno lemljenje, ove ma\u0161ine su vrhunski izbor i dobra investicija.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"450\" height=\"450\" src=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/10\/Reflow-Oven.webp\" alt=\"Reflow Oven\" class=\"wp-image-4053\" srcset=\"https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/10\/Reflow-Oven.webp 450w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/10\/Reflow-Oven-300x300.webp 300w, https:\/\/flj-pcb.com\/wp-content\/uploads\/2025\/10\/Reflow-Oven-150x150.webp 150w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u010cetiri nove tehnologije u sistemu pe\u0107i za talasno lemljenje<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1) Vertikalno prskanje na povr\u0161inu PCB-a (sa sistemom za optimizaciju puta)<\/h3>\n\n\n\n<p>A. Kada mlaznica prska okomito na \u0161tampanu plo\u010dicu, tok se ravnomjernije \u0161iri po plo\u010di. Mlaz bolje prodire u otvore. To pobolj\u0161ava sposobnost rastopljenog kalaja da se penje i vla\u017ei.<\/p>\n\n\n\n<p>B. Automatski sistem za optimizaciju putanje osigurava ravnomjerno premazivanje fluksom.<\/p>\n\n\n\n<p>C. Napredni softver mo\u017ee prilagoditi postavke raspr\u0161ivanja na osnovu brzine transportne trake i \u0161irine \u0161tampane plo\u010dice.<\/p>\n\n\n\n<p><em>(Slike na koje se poziva originalni tekst nisu ovdje uklju\u010dene.)<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2) Talasno lemljenje koristi lijevano \u017eeljezo spremnik s kerami\u010dkom povr\u0161inom kako bi produ\u017eilo vijek trajanja<\/h3>\n\n\n\n<p>A. Zid rezervoara od lijevanog \u017eeljeza debljine 10 mm znatno pove\u0107ava otpornost rezervoara na deformaciju pri zagrijavanju.<\/p>\n\n\n\n<p>B. Liveno \u017eeljezo sadr\u017ei mnogo grafita. Grafit se slabo vla\u017ei kalajem, pa uzrokuje malu koroziju rezervoara. Da bi se dodatno pobolj\u0161ala otpornost na koroziju i glatko\u0107a rezervoara, na povr\u0161inu livenog \u017eeljeza nanosi se kerami\u010dka obrada. To dodatno produ\u017euje vijek trajanja.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3) Novi kanali protoka i novi dizajni mlaznica za smanjenje oksidacije i ni\u017ee tro\u0161kove rada<\/h3>\n\n\n\n<p>Ove promjene smanjuju koli\u010dinu oksidacije i time smanjuju operativne tro\u0161kove kupca.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4) Novi dizajn radilice i kanala protoka za stabilniju talasinu kalaja<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Mlaznica, kanal protoka i struktura radilice direktno uti\u010du na stabilnost talasa.<\/li>\n\n\n\n<li>Visinu vala je mogu\u0107e kontrolirati unutar \u00b10,5 mm.<\/li>\n\n\n\n<li>Prednosti kombinovanog predgrijavanja. a. Infracrveno predgrijavanje brzo podi\u017ee temperaturu. Predgrijavanje toplim zrakom poma\u017ee u odr\u017eavanju jednoli\u010dne temperature. b. Kori\u0161tenje infracrvenog i toplog zraka omogu\u0107ava brzo zagrijavanje i bolju uniformnost temperature. c. Kombinovano predgrijavanje je posebno pogodno za vodotopive flukse.<\/li>\n\n\n\n<li>Ugra\u0111eni lokalni selektivni raspr\u0161iva\u010dki sistem A. Lokalno raspr\u0161ivanje se kre\u0107e u X i Y osi koriste\u0107i steper motor sa remenom za sinhronizaciju, kugli\u010dnim vijkom i linearnim vodilicom. To omogu\u0107ava lokalno selektivno raspr\u0161ivanje fluksa. B. Odabrane mlaznice mogu vr\u0161iti ta\u010dkasto raspr\u0161ivanje, linijsko raspr\u0161ivanje i pravougaono raspr\u0161ivanje. C. Sistem koristi PC i kontrolnu plo\u010du za kretanje. Brzo reaguje, pru\u017ea visoku preciznost i mo\u017ee se programirati. Jednostavan je za rukovanje i \u010di\u0161\u0107enje. D. Ovo je pogodno kada je podru\u010dje prskanja manje od 50% ukupne povr\u0161ine. Mo\u017ee u\u0161tedjeti vi\u0161e od 50% fluksa.<\/li>\n\n\n\n<li>Lokalni ure\u0111aj za punjenje du\u0161ikom u podru\u010dju lonca za lemljenje A. Lokalni ure\u0111aj za punjenje du\u0161ikom u loncu za lemljenje mo\u017ee isporu\u010diti visoku koncentraciju du\u0161ika ispod plo\u010de i oko mlaznice za lemljenje koriste\u0107i malu koli\u010dinu du\u0161ika. B. Koristi posebnu nano-mikroporoznu cijev od nehr\u0111aju\u0107eg \u010delika. Du\u0161ik se \u0161iri i ravnomjerno ispunjava podru\u010dje visokom koncentracijom. C. Tri protokomjera kontroliraju tri linije du\u0161ika. Potro\u0161nja du\u0161ika iznosi oko 12 m\u00b3\/h. Koncentracija kisika u blizini tokova kalupa pored mlaznice iznosi oko 1000 ppm. D. To pobolj\u0161ava kvalitetu kalupa i smanjuje oksidaciju kalupa. Ure\u0111aj ne pru\u017ea online detekciju koncentracije kisika.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. Princip talasnog lemljenja<\/h2>\n\n\n\n<p>Zbog sve manjih elektroni\u010dkih PCB plo\u010da, \u010dip komponente su sve \u010de\u0161\u0107e. Tradicionalne metode lemljenja vi\u0161e ne zadovoljavaju potrebe. Za monta\u017eu mje\u0161ovitih integrisanih sklopova koristi se talasno lemljenje. Komponente za ovu monta\u017eu obi\u010dno su \u010dip kondenzatori, \u010dip induktori, \u010dip tranzistori, diode i sli\u010dno.<\/p>\n\n\n\n<p>Kako se SMT tehnologija razvijala i postajala sve potpunija, pojavilo se sve vi\u0161e SMC dijelova i SMD ure\u0111aja. Proces i oprema za talasno lemljenje tako\u0111er su se pobolj\u0161ali. Primjena talasnog lemljenja postala je \u0161iroka. Gotovo svaki elektroni\u010dki proizvod sada koristi talasno lemljenje.<\/p>\n\n\n\n<p>Povratno taljenje (engleski: <em>Ponovni protok<\/em>) otapa pastu za lemljenje koja je prethodno nanesena na kontakte tiskane plo\u010dice. U procesu taljenja, vodovi ili terminali povr\u0161inski montiranih komponenti mehani\u010dki i elektri\u010dno se povezuju s kontaktima tiskane plo\u010dice. Reflow pri\u010dvr\u0161\u0107uje komponente na plo\u010dicu. Reflow djeluje pomo\u0107u strujanja vru\u0107eg zraka koji djeluje na lemne spojeve. Flux u pasti reaguje na visokoj temperaturi kako bi se formirali SMD spojevi. Ime <em>ponovno talo\u017eenje<\/em> odnosi se na cirkulaciju vru\u0107eg gasa unutar ma\u0161ine koja posti\u017ee visoku temperaturu potrebnu za lemljenje.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. Osnovni opis ma\u0161ine za talasno lemljenje (sa temperaturnom krivom)<\/h2>\n\n\n\n<p>Kada PCB u\u0111e u zonu zagrijavanja:<\/p>\n\n\n\n<p>A. Rastvara\u010di i plinovi u lemljivoj pasti isparavaju. Istovremeno, flux navla\u017ei kontakte, dijelove vodova i pinove. Pasta omek\u0161a i sru\u0161i se. Pokriva kontakte i blokira kisik od kontakata i dijelova vodova.<\/p>\n\n\n\n<p>B. Kada PCB u\u0111e u zonu predgrijavanja, plo\u010da i komponente dobiju dovoljno predgrijavanja. To sprje\u010dava o\u0161te\u0107enja uzrokovana naglim skokom na temperaturu lemljenja.<\/p>\n\n\n\n<p>C. Kada PCB u\u0111e u zonu taljenja, temperatura se brzo pove\u0107ava i pasta se otapa. Teku\u0107i kalaj vla\u017ei kontakte, dijelove vodova i pinove. On se \u0161iri i te\u010de te formira lemne spojeve vla\u017eenjem i mije\u0161anjem.<\/p>\n\n\n\n<p>D. Tiskana plo\u010dica ulazi u zonu hla\u0111enja i kalaj se stvrdne. Time je zavr\u0161eno taljenje kalaja.<\/p>\n\n\n\n<p><em>(Ovdje se u priru\u010dnicima obi\u010dno prikazuje standardni profil temperature reflow-a.)<\/em><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. Zahtjevi procesa talasnog lemljenja<\/h2>\n\n\n\n<p>Reflow je uobi\u010dajen u proizvodnji elektronike. Plo\u010de u na\u0161im ra\u010dunarima koriste ovaj proces. Prednosti su: temperatura se lako kontroli\u0161e, oksidaciju tokom lemljenja je mogu\u0107e ograni\u010diti i tro\u0161kovi proizvodnje su lak\u0161i za kontrolu.<\/p>\n\n\n\n<p>Ma\u0161ina ima sistem za grijanje. Vru\u0107i du\u0161ik ili vru\u0107i zrak pu\u0161e se na plo\u010du na kojoj su ve\u0107 postavljeni dijelovi. Ljepljivi metal se otapa i povezuje dijelove s tiskanom plo\u010dom.<\/p>\n\n\n\n<p>Klju\u010dne ta\u010dke:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Postavite ispravan profil temperature reflow-a. Testirajte profil termalnom sondom u stvarnom vremenu.<\/li>\n\n\n\n<li>Pridr\u017eavajte se smjera lemljenja koji je odredio proizvo\u0111a\u010d plo\u010de tokom obrade.<\/li>\n\n\n\n<li>Izbjegavajte vibracije transportne trake tokom lemljenja.<\/li>\n\n\n\n<li>Pregledajte lemljene plo\u010de radi kvaliteta.<\/li>\n\n\n\n<li>Provjerite je li lemljenje potpuno, povr\u0161ina spoja je mokra, oblik spoja je lijep polumjesec, te potra\u017eite kuglice i ostatke olova, tombstoning i hladne spojeve. Tako\u0111er provjerite promjenu boje na povr\u0161ini PCB-a. Podesite temperaturni profil na osnovu rezultata inspekcije. Tokom cijele proizvodne serije redovno provjeravajte kvalitetu lemljenja.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. Faktori koji utje\u010du na talasno lemljenje<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Veliki dijelovi poput PLCC-a i QFP-a, kao i neki diskretni \u010dipovi, imaju ve\u0107u toplinsku masu. Te\u017ee je lemiti veliki dio nego mali.<\/li>\n\n\n\n<li>Transportna traka u reflow pe\u0107nici pomjera komponente u krugu. Transportna traka tako\u0111er djeluje kao hladnjak. Termi\u010dki uvjeti na rubu i u sredini grija\u0107eg dijela su razli\u010diti. Dakle, \u010dak i unutar jedne zone temperature variraju. Svaka temperaturna zona u pe\u0107nici i svaka pozicija na plo\u010di mogu imati razli\u010dite temperature.<\/li>\n\n\n\n<li>U\u010ditavanje proizvoda utje\u010de na ponovljivost. Prilikom pode\u0161avanja krivulje temperature refluksa in\u017eenjeri moraju osigurati dosljedne rezultate bez optere\u0107enja, s optere\u0107enjem i pri razli\u010ditim faktorima optere\u0107enja. Faktor optere\u0107enja LF = L \/ (L + S), gdje je L du\u017eina slo\u017eenih plo\u010da na transportnoj traci, a S razmak izme\u0111u plo\u010da. Te\u017ee je posti\u0107i dobru ponovljivost kada je LF velik. Tipi\u010dan raspon velikog faktora optere\u0107enja je 0,5\u20130,9, ovisno o proizvodu (gustina komponenti, vrsta plo\u010de) i vrsti pe\u0107i. Dobra lemljenja i ponovljivost zahtijevaju prakti\u010dno iskustvo.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. Prednosti procesa talasnog lemljenja<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Reflow lemljenje ne uranja \u0161tampanu plo\u010du u rastopljeni kalaj. Umjesto toga koristi lokalno zagrijavanje. Tako dijelovi do\u017eivljavaju manji toplotni \u0161ok. Manje je vjerovatno da \u0107e dijelovi biti o\u0161te\u0107eni pregrijavanjem.<\/li>\n\n\n\n<li>Budu\u0107i da se lem samo nanosi na spoj i toplota se lokalno primjenjuje, lak\u0161e je izbje\u0107i nedostatke poput mostenja.<\/li>\n\n\n\n<li>Kalaj u reflowu se koristi samo jednom. Kalaj se ne ponovo koristi. To odr\u017eava kalaj \u010distim i bez ne\u010disto\u0107a i poma\u017ee osigurati dobre kalajne spojeve.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. Tok procesa reflow<\/h2>\n\n\n\n<p>Reflow se koristi za povr\u0161insko monta\u017ene plo\u010de. Tok je relativno slo\u017een i ima dva glavna tipa: jednostranu monta\u017eu i dvostranu monta\u017eu.<\/p>\n\n\n\n<p>A. Monta\u017ea na jednu stranu: nanesite pastu za lemljenje \u2192 postavite komponente (ru\u010dno ili ma\u0161inski) \u2192 reflow \u2192 pregledajte i izvedite elektri\u010dno testiranje.<\/p>\n\n\n\n<p>B. Monta\u017ea s obje strane: A-strana nano\u0161enje paste \u2192 postavljanje komponenti \u2192 reflow \u2192 B-strana nano\u0161enje paste \u2192 postavljanje komponenti \u2192 reflow \u2192 inspekcija i elektri\u010dno testiranje.<\/p>\n\n\n\n<p>Jednostavan sa\u017eetak je: \u201csitotisak paste za lemljenje \u2192 postavljanje dijelova \u2192 reflow.\u201d Klju\u010d je precizno sitotiskanje. U\u010destalost postavljanja dijelova ovisi o PPM-u pick-and-place stroja. Za reflow kontrolirajte temperaturnu rampu, vr\u0161nu temperaturu i krivulju hla\u0111enja.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. Pravila odr\u017eavanja reflow ma\u0161ine<\/h2>\n\n\n\n<p>Nakon kori\u0161tenja reflow ma\u0161ine morate obaviti odr\u017eavanje. To poma\u017ee da oprema traje dugo.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Svaki dan provjerite svaki dio ma\u0161ine. Obratite posebnu pa\u017enju na mre\u017easti transportni pojas. Uvjerite se da se ne zaglavljuje niti da ne otpadne.<\/li>\n\n\n\n<li>Prilikom popravke ma\u0161ine isklju\u010dite napajanje kako biste izbjegli elektri\u010dni udar ili kratki spoj.<\/li>\n\n\n\n<li>Odr\u017eavajte ma\u0161inu stabilnom. Ne smije se nagnuti niti biti nestabilna.<\/li>\n\n\n\n<li>Ako zona grijanja prestane grijati, prvo provjerite odgovaraju\u0107i osigura\u010d. (U izvornom tekstu ova re\u010denica izgleda prekinuta; osigura\u010d je \u010desto prva stvar koju treba provjeriti.)<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. Sigurnosne i radne napomene za reflow ma\u0161ine<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Kako bi osigurali li\u010dnu sigurnost, operateri moraju skinuti bed\u017eeve s imenom i vise\u0107e nakit. Ne nosite \u0161iroke rukave.<\/li>\n\n\n\n<li>Pazite na visoke temperature i izbjegavajte opekotine. Nosite odgovaraju\u0107u za\u0161titu.<\/li>\n\n\n\n<li>Ne mijenjajte zone temperature pe\u0107nice ili brzinu transportne trake po \u017eelji.<\/li>\n\n\n\n<li>Osigurajte ventilaciju prostorije. Izduvna cijev treba voditi izvan prozora.<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Kratak zavr\u0161ni sa\u017eetak<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reflow je za SMD plo\u010de. Valno lemljenje je za plo\u010de sa provrznim komponentama.<\/li>\n\n\n\n<li>Reflow otapa prethodno nanesenu pastu kontrolisanom toplotom i hla\u0111enjem. Wave uranja plo\u010du u pokretni talas kalaja.<\/li>\n\n\n\n<li>Reflow omogu\u0107ava dobru kontrolu temperature i oksidacije i \u0161iroko se koristi u SMT monta\u017ei.<\/li>\n\n\n\n<li>Moderni sistemi za talasno lemljenje dodaju vertikalno prskanje, bolje materijale za pe\u0107nice, pobolj\u0161ani dizajn protoka, mije\u0161ano predgrijavanje, lokalno prskanje i lokalni du\u0161ik kako bi pove\u0107ali iskoristivost i smanjili tro\u0161kove.<\/li>\n\n\n\n<li>Ispravni profili temperature, planiranje optere\u0107enja, pa\u017eljiv pregled i redovno odr\u017eavanje klju\u010dni su za stabilan prinos i kod reflow i kod wave procesa.<\/li>\n<\/ul>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Short overview The main difference between reflow soldering and wave soldering is this: reflow soldering is used for boards that 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