Nheyo dzeMabhodhi eDunhu reSoldering: Nheyo Dzinoita Kuti Majoini Avimbike

Kugadziriswa kwekupedzisira: Chivabvu 2026 · Nheyo dziri shure kwekunamira zvakanaka, kune vanotanga uye vanovandudza

Matambudziko mazhinji ekusonesa anodzokera kumashure kune mashoma ezvisimbiso zvisinganzwisiswe - zvinonyatsoita sei solder, kuti joint yakanaka yakaita sei, nei flux ichikosha, uye chikanganiso chimwe chete chinoitwa nevanotanga vese. Gwaro iri rinofukidza zvekutanga zvemabhodhi edunhu rekusonesa kubva pasi zvichienda mberi: sainzi iri pasi, maturusi akakosha, mashandiro ekuisa weti nekuisa tinning, chimiro chejoin rakanaka kubva pane rakaipa, mutsauko uripo pakati peburi rinopinda nepaburi rinopinda, uye maitiro ekuchengetedza asingafanirwe kuregwa. Ziva zvekutanga izvi uye nhanho nhanho maitiro acho anova otomatiki.

Chii chinonzi mabhodhi edunhu ekusonesa

Kusunga simbi kunobatanidza zvikamu zviviri zvesimbi nekunyungudutsa simbi inozadza - solder - pakati pazvo. Chinhu chakakosha: solder inonyunguduka, asi zvikamu zviri kubatanidzwa hazvinyunguduki. Ndizvo zvinoparadzanisa soldering nekusunga, uko simbi dzepasi dzinonyunguduka dzobatana. Pabhodhi redunhu, uri kubatanidza lead yechikamu kune copper pad pasina kunyunguduka.

Chisungo chesimbi

Sezvo solder yakanyungudutswa ichitonhora, inogadzira chisungo chesimbi — kwete guruu rinongobatanidza zvikamu zviviri chete, asi jira re alloy apo solder inosunga makemikari pamusoro pesimbi. Chisungo ichi chinoshanda nemagetsi uye chine simba, ndosaka solder yakanyatsogadzirwa inotakura magetsi akavimbika uye inodzivirira kukweva. Joint inogara pamusoro pesimbi chete isina kubatana nayo ijoint inotonhora, uye inokundikana pazvose zviri zviviri.

Tembiricha dzinobatanidzwa

Solder yemagetsi yakajairika (ine lead 60/40 kana 63/37) inonyunguduka inosvika 183 °C, nepo simbi inonyunguduka inowanzoiswa pa300–350 °C — zviri nyore pamusoro penzvimbo yekunyunguduka saka kupisa kunopinda nekukurumidza mujoinhi. Solder isina lead inonyunguduka zvakanyanya, inosvika 217–220 °C, uye inoda simbi inopisa zvakafanana. Simbi inoiswa pamusoro penzvimbo yekunyunguduka yesolder nemaune: unoda kuti joinhi isvike pakupisa kwekunyunguduka mumasekondi maviri kana maviri, kwete kubika zvishoma nezvishoma.

Chishandiso chakakosha chekusonesa

Zvinhu zvakakosha zvinotanga nezvishandiso zvepakutanga. Hapana chimwe chezvizvi chinofanira kudhura, asi sarudzo mbiri dzinoita kuti kudzidza kuve nyore zvikuru.

Simbi nechinosungirirwa

• Simbi yekusonesa kana chiteshi — nzvimbo inodzorwa netembiricha (25–60 W, yakaiswa pa ~300–350 °C) ndiyo yakanaka; simbi dzakachipa dzinopisa zvakanyanya kana kuti dzinotonhora zvakanyanya uye dzinoita kuti kudzidza kuve kwakaoma.
• Solder — pakudzidza, waya ine lead 63/37 kana 60/40 rosin-core iri mu 0.6–0.8 mm ndiyo inonyanya kurerutsira; shandisa isina lead (SAC305) chete kana kutevedzera RoHS kuchishanda.

Zvishandiso zvinotsigira

• yerera — waya yerosin-core inosanganisira zvimwe, asi kuwedzera kwemvura kunobatsira zvikuru, kunyanya pakugadzirisa patsva.
• Mushonga wekuchenesa matipi — shinda yemhangura (inofarirwa) kana chipanji chakanyorova, chinochengetwa pedyo.
• Maoko ekubatsira kana vise — yekubata bhodhi kuitira kuti maoko ako ese ari maviri asununguke.
• Zvicheki zvemativi uye zvekufema — yekucheka tambo nekubvisa utsi; hwindo rakavhurika kana chinoburitsa utsi hachisi chisarudzo.

Nei simbi inodziya inodzorwa ichikosha zvikuru

Kana ukatenga chishandiso chimwe chete chakanaka, chigadzire simbi inodzorwa nekupisa. Chidimbu chinochengetedza kupisa kwakasimba chinoendesa kupisa nenzira inofungidzirwa, saka majoini anoumbwa panguva imwe chete. Simbi yakachipa inochinja-chinja tembiricha ndicho chikonzero chakavanzika chekusagadzikana kukuru kwevatangi kunonzi kuri nekuda kwehunyanzvi.

Kunyorovesa uye kuisa simbi mugirazi: chinhu chikuru chinoita kuti inyorove

Pfungwa mbiri dzinotsanangura zvinenge zvese nezvekugadzirisa zvakanaka. Nzwisisa kuti izvi uye kukundikana kwe "chakavanzika" kwakawanda kunogadzirisa pachako.

Kunyorovesa

Kunyorovesa chinhu chinonyungudutswa chinoyerera chichibatana nesimbi yakachena, zvichiita kuti chiite firimu rakatetepa, rinoramba riripo, rakakombama pane kuti chiwedzere kupenya. Kunyorovesa kwakanaka chiratidzo chinooneka chekubatana kwakanaka - chinhu chinonyungudutswa chinobata padhi nelead uye chinodhonza kuita fillet yakatsetseka. Kunyorovesa kusina kunaka, uko chinhu chinonyungudutswa chinokwira uye chinoramba kupararira, zvinoratidza kusvibiswa, oxidation, kana kupisa kusina kukwana. Kana chinhu chinonyungudutswa chikasanyorovesa, pane chakaipa nekuchena kana tembiricha, kwete nekuti uri kupa solder yakawanda sei.

Tinning

Kuisa simbi muchina zvinoreva kuputira pamusoro pechinhu nechinhu chakatetepa - chinonyanya kukosha ndechekuti muromo wesimbi. Mupinyi wakajeka, uchangobva kuiswa muchina unopfuudza kupisa zviri nani pane usina kusimba, wakasanganiswa, nekuti mupinyi wesimbi unosunga muromo wesimbi kusvika pajoini. Chikonzero chimwe chete chinowanzoita kuti vanotanga "vasakwanise kunyungudutsa solder" muromo usina kusimba usingagoni kufambisa kupisa zvakanaka. Dzokorora simbi muchina pese panoita sekuti muromo hauna kusimba, uye ugare wakachena mukati mechikamu chose.

Mashandiro ava vaviri

Muromo wakanyatsoiswa mugaba unoisa kupisa mugaba; kana gaba rapisa zvakakwana, solder itsva inonyorovesa. Siya gaba uye kupisa hakuzombosviki; siya kuchena uye kunyorovesa hakuzomboitiki. Anenge gaba rese rakavimbika ndiro rinobuda muzvinhu zviviri izvi zvakagadzirwa nemazvo.

Basa rekufamba-famba mujoini rega rega

Nzvimbo dzesimbi dzinoita oxidize panguva yadzinosangana nemhepo, uye oxide layers dzinovhara solder kuti isanyorove. Apa ndipo panotanga kukosha flux pane kusarudza.

Chii chinoita kuti flux iite

Flux inobvisa oxidation nemakemikari pakupisa kwekunamira kuitira kuti solder ikwanise kuyerera yobatana nesimbi isina chinhu. Pasina iyo, kunyange solder inopisa, inotaridzika yakachena inogona kuramba kunyorova nekuti firimu re oxide risingaonekwe rinomira munzira. Flux ndiyo inoita kuti solder ibve "yabata" solder yairamba.

Nei rosin-core solder iriyo yakajairika

Rosin-core solder inotakura flux mukati mewaya, ichiiburitsa chaipo painonyunguduka solder uye riini. Iyo flux yakavakirwa mukati ndiyo chikonzero nei waya yerosin-core iriyo standard yemagetsi - inobata majoini mazhinji pasina flux yakasiyana zvachose. Pakugadzirisazve, kudzoreredza majoini ekare, kana nzvimbo dzakaomarara dzakaoxidized, dab ye extra flux inoshandura mhedzisiro.

Flux zvakasara

Mushure mekunamira, rosin residue inogona kusiiwa kana kucheneswa zvichienderana nekushandiswa kwayo. Maflux asina kuchena akagadzirwa zvakananga kuti asiiwe panzvimbo yakachengeteka. Kuti zvive nyore kuvimbika kana kuti zvionekwe zvakanyanya, residue inocheneswa. Kuziva kuti uri kushandisa flux ipi kunokuudza kana kucheneswa kuchidikanwa - chimwe chinhu chidiki chinodzivirira kuvhiringidzika gare gare.

Kuumbwa kwejoini rakanaka kana kuti rakaipa

Kudzidza kuverenga joint nekukasika ndeimwe yehunyanzvi hunokosha zvikuru. Tafura iri pazasi inoratidza chitarisiko chechikonzero.

Kuongororwa nekukurumidza mukugadzirisa

Kana uchiyeuka chinhu chimwe chete: joini yakanaka inopenya uye yakakombama. Kusasimba uye kusviba zvinoreva kutonhora — wedzera mvura wozodziisazve kusvika yayerera zvakanaka uye zvakanaka. Kuongorora uku kamwe chete kunobata majoini mazhinji asina kunaka asati akonzera matambudziko, uye ndiwo musimboti wekuongorora kwenyanzvi zvakare.

Zvinhu zvepakutanga zvinoshandisa maburi akasiyana-siyana kana kuti zvinoshandisa madziro pamusoro pevhu

Mabhodhi edunhu anoshandisa maitiro maviri ekugadzika, uye zvinhu zvekutanga zvakasiyana zvekuti vanotanga vanofanira kutanga nerimwe.

Kuburikidza neburi (THT)

Matinji echikamu anopinda nemumakomba akaboorwa uye anosungirirwa kune rumwe rutivi. Makomba aya anobata zvikamu nehunyanzvi paunenge uchibatanidza, majoini acho akakura uye anoshivirira tekinoroji isina kukwana, uye zvikanganiso zviri nyore kuona nekugadzirisa. Iyi ndiyo nzvimbo yakanakisa yekudzidza zvakakosha - geometry inokanganwira inokutendera kuti utarise pakupisa, kunyorovesa, uye nguva.

Musoro wepamusoro (SMT)

Zvikamu zviri pamapedhi pamusoro pebhodhi, zvidiki zvikuru, uye zvinoda mativi akapfava, flux yakawanda, uye maoko akasimba - kana nzira dzekupisa nesolder-paste yezvikamu zvidiki. SMT haisi yakaoma zvachose, asi haina kukanganwira zvakanyanya, saka kurongeka kwakakodzera ndekwekuita kuti majoini anoburitswa nepakati ave akavimbika kutanga, wobva waenderera mberi kuSMT kana zvinhu zvekutanga zvave zvechipiri.

Chikanganiso chikuru chinoitwa nevatangi

Anenge munhu wese anotanga kuita chikanganiso chimwe chete, uye kuchidana zita racho kunogadzirisa zvakananga kukundikana kwekutanga.

Kupisa solder panzvimbo pejoinhi

Chikanganiso ndechekunyungudutsa solder pamuromo wesimbi wobva waisa blob yakanyunguduka pajointi. Izvi zvinogadzira glob inogara pamusoro pechando isina kubatana - jointi inotonhora yemabhuku. Chinhu chakakosha ndechekupedzisira: kupisa jointi, wobva warega jointi inyungudutsa solder. Bata simbi papedhi woiisa pamwe chete, woiisa kwechipiri kana kaviri, wobva waisa solder pajointi inodziya, kwete pamuromo.

Sei izvi zvichikosha zvakadaro?

Kana joini yapisa zvekukwanisa kunyungudutsa solder pachayo, solder inonyorova uye inosungana nesimbi. Kana muromo wayo chete wapisa, solder inooma nechando pakarepo painogunzva simbi inotonhorera. Iyi tsika imwe chete - kupisa joini, kwete solder - ndiyo musiyano uripo pakati pejoini dzakavimbika nebhodhi rakazara nezvikanganiso zvinogara zvichiitika.

Zvinhu zvekuchengetedza zvausingakwanise kupotsa

Kusunga kwakachengeteka kana uine matanho ekutanga ekudzivirira, uye tsika idzi dzinofanira kunge dziripo kubva pakutanga kwejoini rako.

• Heat: muromo unosvika 300–400 °C — shandisa chigadziko nguva dzose, uye fungidzira kuti muromo wacho nemajoini matsva akasungirirwa zvinopisa zvine njodzi kwenguva yakati mushure mekushandisa.
• Utsi: bvisa mweya. Utsi hunobuda hunotsamwisa nzira dzekufema; ne lead solder, dzivisa kufema utsi uye geza maoko mushure mezvo. Usambofa wadya kana kunwa pabhenji.
• Maziso: dziviriro yekupfekwa — kuyerera kunogona kusvipa, uye tambo dzakachekwa dzinobhururuka zvisingazivikanwi kana dzachekwa.
• Utsanana hwemutobvu: Kana uchishandisa mutobvu, chengeta kure nenzvimbo dzekudya uye geza usati wadya. Mutobvu injodzi chaiyo kuhutano inobatwa zvisina hanya.

Sei izvi zvisingakurukuriranwe

Hapana kana chimwe chezvidziviriro izvi chinokunonotsa zvine musoro, uye zvese izvi zvinodzivirira kukuvara kuri nyore kudzivirira uye kusingafadzi kutambura. Kuvakira mutsika idzi kubva pakutanga zvinoreva kuti haufanirwe kudzoreredza dziviriro kune tsika dzakaipa gare gare.

Nguva yekuchinja kubva pakusanganisa nemaoko kuenda kune mugadziri

Kubatanidza maoko kwakanakira kudzidza, kugadzira mapurojekiti matsva, uye kugadzirisa zvinhu — uye kuziva zviri pamusoro apa kunoita kuti unyatsogona zvese izvi. Asi pane imwe nguva basa remaoko rinorega kuva chishandiso chakakodzera.

Zviratidzo zvekuti yasvika nguva yekukwira

Kana wangoda vhoriyamu, zvikamu zvinopenya zvakanaka, kana zvikamu zvakavanzwa zvakaita seBGAs zvisingasvikwe neruoko, kuungana kwemuchina nekudzokororazve uye kuongorora otomatiki kunokurumidza uye kwakavimbika kupfuura chero ruoko. Zvinhu zvakakosha zvawakadzidza zvichiri kushanda - ndizvo chaizvo zvinoitwa nemuchina otomatiki - asi mutsetse wekudzokororazve unozviita nguva dzose muzviuru zvemajoini.

Nhanho inotevera

Highleap Electronics inopa SMT uye kubatanidza maburi neAOI uye X-ray inspection — danho rinotevera rinoshanda kana prototype yakasimbiswa ichifanira kuva chigadzirwa chaicho. Tinoongorora dhizaini yako kutanga nekutarisa kweDFM kwemahara.

Tora mutengo wegungano →

Mibvunzo inowanzobvunzwa

Joint yakanaka inotaridzika sei?

Inopenya, yakatsetseka, uye yakakombama — senge gomo diki rinoputika rakambundira pedhi nerodhi. Isina kusimba, ine magirafu, kana kuti yakaita sebhora zvinoreva pfundo rinotonhora rinoda kudziyiswa zvakare.

Sei solder isinganamatire pajointi yangu?

Kazhinji muromo wesimbi wakasviba kana usina kuiswa mugaba, kana kupisa kana kuyerera kushoma. Isa mugaba mugaba, wedzera kuyerera, uye pisa jointi pachayo - kwete solder chete.

Chii chinonzi flux uye ndinoida here?

Flux inochenesa oxidation kuitira kuti solder inyorovese simbi. Rosin-core solder ine zvimwe; extra flux inobatsira zvikuru pakugadzirisa majoini uye kuomarara.

Ndeipi solder yakanakisisa kune vanotanga?

Waya ine rosin-core ine lead 63/37 inosvika 0.6–0.8 mm — inorerutsa uye inotonhora nekukurumidza ndiyo inonyanya kurerutsa. Chinja kune isina lead chete kana zvichidikanwa kuti zvitevedzerwe neRoHS.

Iron yangu yekusonesa inofanira kunge iri tembiricha yakadii?

Kunenge 300–350 °C kune solder ine lead; isina lead inopisa zvishoma. Nzvimbo yekupisa inodzorwa inoita kuti kubata izvi kuve nyore.

Ko solder ine lead yakachengeteka here kushandisa?

Hazvina kuipa pabasa rekuzvivaraidza uye remuenzaniso, zvine matanho ekutanga ekudzivirira: bvisa mweya, usafeme utsi, uchengete kure nechikafu, uye geza maoko mushure mezvo. Hazvibvumirwi muzvigadzirwa zveRoHS.

Ndinofanira kutanga ndadzidza kushandisa maburi kana kuti kuisa pamusoro pevhu here?

Maburi makuru, anorerutsa mativi ayo anokubatsira kuti ugone kupisa, kunyorovesa, uye nguva usati waenda kune diki, isingarerutsi mativi eSMT.