Taw qhia
Hauv kev tsim khoom siv hluav taws xob niaj hnub no, los ntawm lub xeev - ntawm -- cov xov tooj smartphones mus rau cov tswj kev lag luam nyuaj, ib txheej txheem tseem ceeb yog qhov tseem ceeb:reflow soldering. Raws li cov khoom siv hluav taws xob txuas ntxiv mus rau qhov me me (piv txwv li, 01005 Cheebtsam) thiab kev sib koom ua ke siab (piv txwv li, BGA thiab QFN pob), qhov zoo ntawm cov txheej txheem reflow soldering ncaj qha txiav txim siab cov khoom yield thiab kev ntseeg tau.
RauSMT Hoobkaspab pawg neeg yuav khoom, electronics engineers, thiab startup manufacturers, kev nkag siab tob ntawm reflow soldering tsis yog tsuas yog ib qho kev xav tau tab sis kuj tseem ceeb rau txo cov nqi tsim khoom thiab txhim kho kev lag luam kev sib tw.
Reflow Soldering yog dab tsi?
Reflow soldering yog hais txog cov txheej txheem ntawm kev siv ib puag ncig tswj cua sov kom yaj solder paste ua ntej- siv rau cov ntaub qhwv ntawm PCB, yog li tsim kom muaj kev sib txuas ntawm cov khoom siv thiab hluav taws xob ntawm cov hlau lead ntawm qhov chaw -mount cov khoom thiab cov ntaub qhwv.
Nws yog hu ua "reflow" vim hais tias cov tshuaj txhuam tau dhau los ua lub voj voog lub cev nyob rau hauv qhov cub cua sov, hloov ntawm cov khoom mus rau lub xeev ua kua thiab tom qab ntawd rov ua dua thaum txias. Nws yog qhov kawg thiab tseem ceeb tshaj plaws soldering kauj ruam hauv lubSMT ntau lawm kab.
Reflow soldering ua haujlwm li cas? Yuav ua li cas thiaj ua tiav qhov tseeb soldering?
Lub hauv paus ntawm reflow soldering yog nyob rau hauv kev tswj qhov kub thiab txias. Hauv SMT cov kab ntau lawm, PCB txuas mus dhau lossolder muab tshuaj txhuamluam ntawv thiabSMTtshuab (cov khoom tso rau hauv), ua ntej thaum kawg nkag mus rau hauv qhov cub reflow.
- Solder Paste Application: Solder paste muaj kev sib xyaw ntawm cov pob me me thiab cov flux.
- Hloov Thaum tshav kub kub: Cov cua kub hauv qhov cub hloov cov cua sov mus rau PCB los ntawm kev sib txuas, hluav taws xob infrared, lossis roj-theem cua sov.
- Solder Paste Melting: Thaum qhov kub siab tshaj qhov kub ntawm cov nplaum nplaum lub melting point, lub molten solder, uas tau tsav los ntawm nto nro, envelops cov tivthaiv ua thiab ua ib tug khoom solder sib koom ua ke thaum txias.
Qhov txawv ntawm Reflow Soldering thiabWave Soldering: Kuv Yuav Xaiv Qhov twg?
NeoDen tau sau cov ntsiab lus sib piv hauv qab no:
| Yam ntxwv | Reflow Soldering | Wave Soldering |
| Daim ntawv thov | SMT Surface -Mount Components | DIP Los ntawm -Qhov Cheebtsam |
| Solder Source | Solder paste ua ntej- luam tawm ntawm cov ntaub qhwv | Molten kua tin da dej (tin yoj) |
| nyuaj | Siab, xav tau kev tswj xyuas qhov kub thiab txias profile | Nruab nrab, nrog rau kev tsom mus rau yoj qhov siab tswj |
| Kev siv tsim nyog | Niaj hnub nimno miniaturized, siab -cov khoom siv hluav taws xob | Cov khoom siv hluav taws xob qub, siab - cov khoom siv fais fab |
Kev pom zoo: Yog tias koj cov khoom muaj ntau qhov chaw -mount capacitors, resistors, lossis BGA chips, reflow soldering yog tib txoj kev xaiv.
Hauv -Kev Ntsuam Xyuas Qhov tob: 4 theem tseem ceeb ntawm Reflow Soldering txheej txheem
1. Preheat Zone
Lub Hom Phiaj: Txhawm rau kom sov PCB sib npaug thiab cov khoom siv rau 100℃- 150 degree.
Cov ntsiab lus tseem ceeb: Cov cua kub yuav tsum tau tswj ntawm 1-3℃/ s. Tus nqi nrawm dhau tuaj yeem ua rau cov khoom siv hluav taws xob ceramic tawg, thaum tus nqi qeeb dhau tuaj yeem ua rau cov dej ntws ntxov ntxov.
2. Soak Zone
Lub Hom Phiaj: Txhawm rau tshem tawm qhov sib txawv ntawm qhov kub thiab txias ntawm lub rooj tsavxwm thiab xyuas kom meej tias cov khoom loj thiab cov khoom me me ncav cuag qhov pib kub.
Cov ntsiab lus tseem ceeb: Lub flux ua haujlwm thaum lub sijhawm no, tshem tawm oxidation ntawm cov ntaub qhwv. Cov theem no feem ntau kav 60-120 vib nas this.
3. Reflow Zone
Lub Hom Phiaj: Lub qhov cub kub nce mus rau qhov kub siab tshaj plaws.
Cov ntsiab lus tseem ceeb: Rau cov hlau lead- dawb solder paste, lub ncov kub yog feem ntau 235℃-250℃. Lub Sijhawm Ua Kua (TAL) yuav tsum tau khaws cia ntawm 45-90 vib nas this kom ntseeg tau tias kev loj hlob ntawm cov khoom sib txuas (IMCs).
4. Qhov chaw txias
Lub hom phiaj: Kev ua kom txias sai ua rau lub tshuab ua kom khov.
Cov ntsiab lus tseem ceeb: Qhov ntsuas cua txias sai dua (3-4℃/ s) ua rau cov qauv siv lead ua zoo dua, ua rau cov pob qij txha muaj zog, ruaj khov dua nrog lub ntsej muag ci dua.
Vim li cas reflow soldering tseem ceeb rau niaj hnub SMT ntau lawm?
Raws li lub Hoobkas txiav txim siab- tus tsim, koj yuav tsum nkag siab ROI ntawm cov thev naus laus zis no los ntawm kev pom kev lag luam:
- Adaptability rau huab miniaturization: Reflow soldering leverages tus kheej -alignment nyhuv ntawm kua solder los kho me misalignments thaum muab tso, uas yog ib qho tseem ceeb rau tuav 0201 Cheebtsam thiab txawm me me.
- Exceptional soldering yield: Piv rau phau ntawv soldering, automated reflow ncu txo qhov tsis xws luag xws li txias solder pob qij txha thiab txias solder, heev txo tus ncej- ntau lawm rework nqi.
- Kev them nyiaj yug rau siab -ntaus layouts: Nws yog lub hauv paus rau ob -sab SMT txheej txheem, pab koj integrate ntau functionality rau hauv me me PCB qhov chaw.
Yuav Ua Li Cas Xaiv Txoj Cai Reflow Cub rau Koj Lub Hoobkas?
Thaum xaiv cov cuab yeej, tsis txhob ua qhov muag tsis pom kev "ntau qhov chaw kub". Kev txiav txim siab yuav tsum yog nyob ntawm koj qhov khoom sib xyaw thiab pob nyiaj siv.
1. Desktop Reflow Cubvs.Loj Reflow Qhov cub
- Desktop qauv (e.g., NeoDen IN 6): Tsim nyog rau kev tsim qauv, kuaj sim, lossis me me -batch ntau lawm. Lawv cov txiaj ntsig muaj xws li cov hneev taw me me, siv hluav taws xob tsawg, thiab tus nqi zoo heev - ua tau zoo.
- Tsis siv neeg orbital reflow soldering (e.g., NeoDen IN12C): Featuring 8–12 los yog ntau tshaj qhov kub thiab txias, cov no yog tsim rau 24/7 loj- cov kab sib dhos. Lawv muaj qhov tshwj xeeb ntawm kev tswj qhov kub thiab txias thiab txhawb nqa txoj siv ceev ceev.
2. Peb Cov Txheej Txheem Ua Ntej Ua Ntej Thaum Yuav Khoom
- Kub tswj qhov tseeb:Lub siab- tshuab zoo yuav tsum muaj qhov kub thiab txias sib txawv ntawm ± 1℃lossis tsawg dua.
- Cua sov Technology:Ua ntej tshaj plaws Convection, raws li nws cov thermal uniformity nyob deb tshaj ntawm cov cua sov infrared ua ntej.
- Ua -hauv Lim System:Cov txheej txheem reflow generates flux fumes. Cov cav tov nruab nrog ib qho ua tau - nyob rau hauv cov pa filtration system zoo dua ua tau raws li ib puag ncig cov qauv thiab tiv thaiv cov sensors sab hauv.
FAQ
Q1. Yog vim li cas "tombstoning" tshwm sim tom qabreflowqhov cub?
A: Qhov no feem ntau yog tshwm sim los ntawm qhov sib txawv ntawm qhov kub ntau dhau ntawm qhov kawg ntawm cov ntaub qhwv los yog cov ntawv luam tawm tsis sib xws, ua rau muaj qhov tsis sib xws hauv qhov nro. Optimizing lub uniformity ntawm preheating cheeb tsam yog qhov tseem ceeb los daws qhov teeb meem no.
Q2. Puas tuaj yeem coj-dawb thiab leaded reflow soldering sib koom tib qhov cub?
A: Raws li kev xav, yog, tab sis ua ntej - cov txheej txheem dawb yuav tsum muaj qhov kub siab tshaj (kwv yees li 30℃-40℃siab dua). Ntev -lub sij hawm txhuas- dawb soldering qhov chaw siab dua ntawm cov khoom siv hluav taws xob tiv thaiv thiab lub zog muaj peev xwm.
Q3. Kuv yuav txiav txim siab pes tsawg thaj chaw uas kuv xav tau reflow qhov cub?
A: Rau cov boards yooj yim (ib zaug -ib sab, cov khoom loj), 5-6 qhov chaw kub txaus txaus. Rau kev kho mob nyuaj lossis aerospace-qib PCBs (ntau- txheej boards, BGAs), peb pom zoo kom xaiv 8 qhov chaw kub lossis ntau dua kom ua tiav qhov kub thiab txias dua.
Xaus: Thawj kauj ruam mus rau kev ua tau zoo SMT Manufacturing
Rau cov kws tsim khoom siv hluav taws xob nrhiav kom txo cov nqi thiab txhim kho cov khoom zoo, kev tswj xyuas qhov kub thiab txias ntawm reflow soldering thiab xaiv cov cuab yeej zoo yog lub hauv paus ntawm kev vam meej.
Yog koj npaj koj thawjSMT ntau lawm kablos yog nrhiav kev txhim kho koj cov txheej txheem soldering uas twb muaj lawm, xaiv cov khoom siv nrog cov pov thawj kev txawj ntse yog qhov tseem ceeb.
Txhim kho koj cov txiaj ntsig Soldering -Pib tam sim no
Nrog ntau tshaj kaum xyoo ntawm kev txawj ntse hauv kev lag luam SMT, NeoDen tau mob siab rau muab cov kev daws teeb meem zoo thiab ruaj khov rau cov neeg siv khoom thoob ntiaj teb.
Nrhiav rau lub qhov cub compact reflow haum rau kev sim siv?[Saib NeoDen IN6 Khoom Paub meej]
Xav tau ib qho kev lag luam -qib reflow qhov cub muaj peev xwm ua tau siab - ntim ntau lawm?[ Hu rau peb pab neeg muag khoom kom thov daim ntawv teeb tsa]