Yuav ua li cas tiv thaiv PCB Warping thaum lub sij hawm Reflow Soldering txheej txheem?

Taw qhia

Hauv kev tsim khoom siv hluav taws xob SMT,reflow solderingyog ib kauj ruam tseem ceeb uas txiav txim siab qhov zoo ntawm PCB solder pob qij txha. Cov kws ua haujlwm feem ntau tsom rau qhov raug muab tshuaj txhuam luam ntawv,qhov chaw tso rau hauv, thiab kev ntseeg tau sib koom ua ke. Txawm li cas los xij, PCB dabtsi yog khoov lossis warpage tom qab reflow soldering kuj yog ib qho teeb meem tseem ceeb uas cuam tshuam rau cov khoom lag luam.

Yog li, vim li cas PCBs khoov thaum lub sij hawm reflow soldering txheej txheem? Yuav ua li cas qhov kev pheej hmoo ntawm PCB dabtsi yog khoov yuav txo tau los ntawm cov txheej txheem optimization thiab xaiv cov khoom siv? Tsab ntawv xov xwm no yuav tshuaj xyuas cov teeb meem no raws li kev ua tau zoo ntawm SMT kev tsim khoom thiab cov yam ntxwv ntawm covNeoDen IN6 reflowQhov cub.

Vim li cas PCBs khoov thaum lub sij hawm Reflow Soldering txheej txheem?

1. Thermal Stress tshwm sim los ntawm cov thermal expansion ntawm cov khoom PCB tsis sib xws

PCBs tsis yog tsim los ntawm ib qho khoom siv tab sis yog tsim los ntawm laminating ntau yam khoom sib txawv, txhua tus muaj cov yam ntxwv thermal expansion. Thaum lub PCB heats sai heev thaum lub sij hawmreflowqhov cubsolderingtxheej txheem, cov txheej txheem sib txawv ntawm cov khoom nthuav dav mus rau qhov sib txawv. Yog tias cov txheej txheem cua sov ceev dhau, lossis yog tias muaj qhov sib txawv ntawm qhov kub thiab txias ntawm qhov chaw sab saum toj thiab hauv qab ntawm PCB, kev ntxhov siab sab hauv yuav tsim.

Thaum cov kev ntxhov siab no tsis tuaj yeem tso tawm raws sijhawm, cov xwm txheej hauv qab no yuav tshwm sim:

• Bulging hauv nruab nrab ntawm PCB.
• Warping ntawm board ntug.
• Zuag qhia tag nrho khoov ntawm PCB.

Yog li, PCB dabtsi yog khoov tsis tas yuav yog qhov teeb meem zoo nrog PCB nws tus kheej, nws kuj tseem yuav cuam tshuam nrog kev tswj xyuas thermal thaum lub sij hawm reflow soldering txheej txheem.

Rau SMT cov chaw tsim khoom, ib qho ntawm cov yuam sij los txo qhov kev pheej hmoo ntawm PCB warping yog tsim kom muaj qhov ruaj khov thiab tsis sib xws ntawm qhov kub thiab txias.

Yuav ua li cas reflow kub profile cuam tshuam PCB warping?

Reflow solderingTsis yog tsuas yog ib qho teeb meem ntawm cua sov PCB mus rau lub melting point ntawm solder paste, es, nws yog ib tug tas mus li kev kho cua sov txheej txheem.

Ib qho ua tiav reflow profile feem ntau suav nrog:

1. Preheating theem
2. Soaking theem
3. Reflow theem
4. Txias theem

Cov kev txwv ntawm txhua theem cuam tshuam rau kev ntxhov siab thermal uas tau ntsib los ntawm PCB.

1. Ceev ceev preheating ua rau muaj kev pheej hmoo ntawm thermal shock rau PCB

Lub hom phiaj tseem ceeb ntawm theem preheating yog maj mam nce PCB qhov kub thiab txias, yog li:

• Activating lub flux.
• Maj mam sib npaug ntawm qhov kub ntawm txhua qhov chaw ntawm PCB.
• Txo kev ntxhov siab los ntawm kev hloov pauv kub tam sim ntawd.

Yog tias cov cua kub ceev heev, PCB nto tuaj yeem ua kom sov sai sai thaum qhov kub ntawm sab hauv tseem qis.

Qhov kub gradient no tuaj yeem ua rau:

• Kev nthuav dav tsis sib xws nyob thoob plaws thaj chaw sib txawv ntawm PCB.
• Kev ntxhov siab ntxiv tsim nyob rau hauv cov khoom.
• Qhov muaj feem ntau ntawm warping.

Yog li ntawd, thaum lub sij hawm SMT txheej txheem debugging, engineers yuav tsum tsis txhob tsom rau lub ncov kub xwb tab sis kuj yuav tsum tau them sai sai rau tag nrho cov kub hloov txheej txheem.

CovNeoDen IN 6txhawb kev hloov kho qhov kub thiab txias, tso cai rau cov neeg siv los hloov kho thaj chaw raws li cov khoom sib txawv thiab cov yam ntxwv ntawm PCB, yog li pab tsim kom muaj qhov ruaj khov reflow profile.

2. Kev kub siab heev thaum lub sij hawm reflow ua rau muaj kev pheej hmoo ntawm PCB warpage

Lub sij hawm reflow yuav tsum ncav cuag lub solder paste lub melting point kom ntseeg tau tias cov pob qij txha txhim khu kev qha, tab sis kub heev yuav ua rau:

• Ntxiv thermal expansion ntawm cov khoom siv PCB.
• Ntau dua thermal stress ntawm cov khoom.
• Lub qhov rais nqaim dua.

Qhov no yog qhov tseeb tshwj xeeb rau:

• Nyias PCBs.
• PCBs nrog thaj tsam tooj liab loj.
• PCBs nrog siab -cov khoom siv ntom ntom.

Kev kub siab heev tuaj yeem ua rau muaj kev pheej hmoo ntawm PCB warpage.

Lub NeoDen IN6 qhov kub ntawm qhov ntsuas kub ntawm chav tsev kub mus txog 300 degree, ua tau raws li cov kev cai ntawm cov hlau lead - cov txheej txheem dawb soldering. Cov neeg siv tuaj yeem teeb tsa qhov ntsuas qhov tseeb raws li qhov pom zoo nkhaus uas muab los ntawm lawv cov neeg muab tshuaj txhuam cov khoom siv.

3. Kev txias txias heev yuav ua rau muaj kev ntxhov siab nyob

Ntau tus neeg ua haujlwm tsim khoom tsom ntau dua rau lub sijhawm cua sov thaum kho cov txheej txheem reflow soldering, thaum tsis saib xyuas cov txheej txheem txias.

Qhov tseeb, lub caij txias kuj cuam tshuam rau PCB flatness.

Thaum lub PCB txias sai heev los ntawm qhov kub thiab txias mus rau chav tsev, cov ntaub ntawv sib txawv ntawm cov nqi sib txawv, ua rau muaj kev ntxhov siab sab hauv.

Yog tias cov txheej txheem txias txias dhau lawm:

• PCB yog feem ntau deformation.
• Internal kev nyuaj siab nyob rau hauv lub solder pob qij txha nce.
• Ntev - kev cia siab rau lub sij hawm txo.

Yog li ntawd, ib qho kev nthuav dav thiab txhim khu kev qha reflow soldering txheej txheem yuav tsum tau xyuam xim rau cov hauv qab no:

• Cua sov tus nqi.
• Tuav lub sijhawm.
• Peak kub.
• Kev ua kom txias.

Sib nrug los ntawm qhov kub thiab txias profile, dab tsi lwm yam tuaj yeem ua rau PCB warpage?

1. PCB tsim thiab cov qauv tsim

Txawm tiasreflow solderingyog qhov tseem ceeb rau kev tswj cov txheej txheem thermal, PCB tus kheej tsim kuj cuam tshuam rau kev pheej hmoo ntawm kev ua tsov rog.

Cov feem cuam tshuam feem ntau muaj xws li:

• PCB thickness:Cov PCBs nyias nyias muaj qhov nruj dua thiab yooj yim dua rau kev ua tsov rog nyob rau hauv siab - qhov kub thiab txias.
• Tsis sib npaug tooj liab faib:Yog tias thaj tsam tooj liab ntawm ib sab ntawm PCB loj dua li ntawm lwm qhov, qhov sib txawv ntawm thermal expansion yuav tshwm sim thaum cua sov.
• Cov txheej txheem tsis sib xws:Concentrating loj Cheebtsam nyob rau hauv ib tug tshwj xeeb cheeb tsam ntawm PCB tuaj yeem ua rau muaj kev sib txawv hauv cheeb tsam hauv thermal peev.

Yog li ntawd, nyob rau hauv qhov tseeb SMT manufacturing, PCB tsim, khoom siv, thiab reflow soldering tsis yuav tsum tau optimized ua ke.

NeoDen IN6 txo qhov kev pheej hmoo ntawm PCB dabtsi yog khoov los ntawm nws cov qauv tsim?

Txo qhov kev pheej hmoo ntawm PCB warping thaum lub sij hawm reflow soldering txheej txheem tsis yog ib qho teeb meem ntawm kev txo qhov kub; es, nws xav tau cov cuab yeej siv nrog kev ruaj ntseg thermal tswj peev xwm.

1. Tag nrho kub - cua convection tsim los txhim kho PCB cua sov uniformity

Ib qho tseem ceeb ntawm PCB warping thaum lub sij hawm reflow soldering yog qhov kub thiab txias ntawm qhov sib txawv ntawm lub rooj tsavxwm.

Piv txwv li:

• Cov chaw loj tooj liab nqus cov cua sov qeeb dua.
• Cov cheeb tsam loj IC feem ntau muaj peev xwm thermal ntau dua.
• Cov cheeb tsam me me ua kom sov sai dua.

Yog tias cov khoom siv hluav taws xob sib txawv tsis sib xws, qhov chaw sib txawv ntawm tib lub PCB yuav nyob ntawm qhov sib txawv ntawm qhov kub thiab txias, yog li ua rau muaj kev ntxhov siab thermal.

Lub NeoDen IN6 ua haujlwm puv Kub- Cua Convection cua sov txoj kev, uas siv cov cua kub ncig kom sib npaug ntawm cov cua sov mus rau PCB nto.

Piv nrog rau cov txheej txheem ib txwm siv uas tso siab rau hluav taws xob los ntawm ib qho chaw tshav kub, kub - cua convection txo qhov kub ntawm qhov sib txawv hauv zos, ua rau qhov kub siab dua rau PCB.

Raws li covNeoDen IN6 khoom specifications, qhov sib txawv ntawm qhov kub thiab txias nyob rau hauv cov cuab yeej yog tsawg dua 2 degree, uas yuav pab kom paub tseeb tias cov thermal ua tau zoo dua qub rau PCB.

Rau PCBs uas muaj qhov siab - cov khoom siv ntom ntom lossis cov txheej txheem tooj liab nyuaj, qhov muaj peev xwm ua kom sov zoo li no tuaj yeem txo qhov kev pheej hmoo ntawm warping los ntawm kev hloov pauv hauv zos.

2. 6 Ntau-Zone Design for Smoother Temperature Ramp

CovNeoDen IN 6nta 6-zone design. Los ntawm kev sib koom ua ke ntawm cov cheeb tsam sab saud thiab qis qis, nws pab rau sab saum toj thiab hauv qab ntawm PCB nqus cua sov kom sib npaug. Qhov no yog qhov tseem ceeb tshwj xeeb rau kev txo qis PCB warpage.

Nrog rau ntau- cheeb tsam tswj, engineers tuaj yeem kho cov cua sov tsis zoo rau ntau theem raws li PCB cov yam ntxwv, kom ntseeg tau tias PCB dhau los ua qhov kub thiab txias dua.

3. Precise Temperature Control kom txo tau cov thermal Stress uas tshwm sim los ntawm qhov kub thiab txias

Thaum lub sij hawm SMT ntau lawm txheej txheem, kub stability ncaj qha cuam tshuam lub thermal kev nyuaj siab lub xeev ntawm PCB.

Yog tias qhov ntsuas kub tseem ceeb tshwm sim hauv cov khoom siv reflow soldering:

• PCB tej zaum yuav raug hloov kub dua;
• Cov txheej txheem sib txawv tuaj yeem nthuav dav thiab cog lus ntawm tus nqi tsis sib xws;
• Internal residual stress yuav nce.

Lub NeoDen IN6 tau nruab nrog siab - qhov ntsuas kub ntawm qhov ntsuas kub thiab qhov ntsuas kub tswj qhov ntse, uas pab cov cuab yeej tswj qhov ntsuas kub kom ruaj khov.

Raws li cov khoom tshwj xeeb, NeoDen IN6 ua tiav qhov kev tswj qhov kub thiab txias ntawm ± 0.2 degree, nrog rau qhov kub thiab txias sib txawv tswj nyob rau hauv ± 1 degree.

HauvR&D thiab me -batch ntau lawmib puag ncig, ruaj khov kub tswj pab engineers tsim txhim khu kev qha reflow profiles, txo PCB warpage teeb meem tshwm sim los ntawm cov txheej txheem fluctuations.

4. Tiag -lub sij hawm ntsuas kub Curve Monitor rau kev tswj kom zoo dua ntawm PCB Soldering txheej txheem

Ntau qhov teeb meem PCB dabtsi yog khoov tsis yog tshwm sim los ntawm cov khoom siv ua haujlwm tsis zoo, tab sis yog los ntawm cov khoom siv rov qab uas tsis tau ua kom zoo rau cov PCB tshwj xeeb.

Piv txwv li:

Nrog tib qhov kub thiab txias:

• Nyias thiab tuab PCBs pom qhov sib txawv ntawm qhov kub thiab txias.
• PCBs nrog cov khoom sib txawv ntom ntom nqus cov cua sov sib txawv.
• Optimal curves sib txawv nyob ntawm seb cov khoom siv tshuaj siv.

Yog li, engineers yuav tsum ntsuas qhov kub thiab txias kom nkag siab txog PCB qhov tiag -lub sijhawm hloov pauv kub.

NeoDen IN6 txhawb kev sib txuas ntawm qhov ntsuas kub thiab tuaj yeem ntes cov ntsuas kub los ntawm kev sim PCB tiag tiag, pab cov neeg siv ua kom zoo dua qhov ntsuas qhov ntsuas.

5. Adjustable Conveyor Ceev los txhim kho txheej txheem Adaptability rau txawv PCBs

PCBs sib txawv muaj qhov sib txawv ntawm cov cua sov.

Piv txwv li:

• Nyias PCBs:Cov cua kub ceev yuav tsum zam;
• Thickness ntawm PCBs:Kev hloov hluav taws xob txaus yuav tsum tau ua kom ntseeg tau.

Cov NeoDen IN 6txhawb nqa kev hloov pauv ceev nyob rau hauv thaj tsam ntawm 5-30 cm / min, tso cai rau cov neeg siv los kho lub sijhawm nyob ntawm PCB hauv txhua qhov kub thiab txias raws li PCB qhov ntev, tuab, thiab hom tshuaj txhuam.

Qhov kev hloov pauv no ua rau IN6 haum tsis yog rau ib qho - cov ntawv thov khoom, tab sis kuj rauR&D, me me -batch ntau lawm, thiab cov xwm txheej yuav tsum tau hloov pauv sai ntawm ntau tus qauv PCB.

Yuav ua li cas PCB khoov yuav txo qis dua los ntawm SMT txheej txheem optimization?

Txawm hais tias qhov kev ua tau zoo ntawm cov khoom siv reflow soldering yog qhov tseem ceeb, txo qhov kev pheej hmoo ntawm PCB khoov tseem yuav tsum muaj kev sib xyaw ntawm cov khoom siv thiab kev ua kom zoo.

1. Kho Reflow Oven Parameters Raws li PCB yam ntxwv

Cov PCB sib txawv yuav tsum siv qhov sib txawv ntawm qhov kub thiab txias; ib txheej ntawm cov kev txwv yuav tsum tsis txhob siv rau txhua yam khoom.

Engineers yuav tsum xav txog:

• PCB thickness.
• Board hom.
• Tooj liab faib cheeb tsam.
• Cov khoom ntom ntom.
• Solder paste specifications.

Thaum tsim cov kev ntsuas thawj zaug, xa mus rau qhov pom zoo qhov kub thiab txias profiles muab los ntawm tus neeg muag khoom muab tshuaj txhuam.

CovNeoDen IN6 siv phau ntawvpom zoo kom teem reflow soldering kub tsis raws li cov ntaub ntawv muab los ntawm solder paste tsum los xyuas kom meej cov txheej txheem soldering raws li cov khoom yuav tsum tau.

2. Ntsuas qhov kub thiab txias ntawm PCB tiag tiag es tsis txhob cia siab rau cov khoom siv qhov ntsuas kub

Qhov ntsuas kub ntawm cov khoom siv tsis tuaj yeem sawv cev rau qhov ntsuas kub ntawm PCB.

Ib txoj kev txhim khu kev qha ntau dua yog:

1. Nruab cov thermocouples ntawm qhov chaw tseem ceeb ntawm PCB.
2. Tau txais qhov kub thiab txias profile.
3. Tshawb xyuas qhov sib txawv ntawm qhov kub thiab txias ntawm ntau qhov chaw.
4. Kho cov cheeb tsam parameters.

Txoj hauv kev no yuav pab kom tsis txhob nthuav tawm PCB rau kev ntxhov siab ntxiv los ntawm kev teeb tsa tsis raug.

NeoDen IN6: Pab cov tuam txhab tsim kom muaj kev ruaj ntseg PCB Reflow Soldering txheej txheem

Rau cov khoom siv hluav taws xob R & D, cov chaw tsim khoom me me EMS, thiab kev pib kho vajtse, PCB warpage tsis tsuas yog cuam tshuam rau cov khoom zoo nkaus li tab sis kuj tuaj yeem cuam tshuam kev sib koom ua ke kev ntseeg siab thiab kev sib dhos tom qab.

NeoDen IN6 pab cov neeg siv tsim kom muaj kev ruaj khov thiab rov ua dua PCB reflow soldering txheej txheem.

Tsis tas li ntawd, IN6 nta ib qho kev tsim duab compact, ntsuas 1020 × 507 × 350 mm thiab hnyav kwv yees li 49 kg, ua rau nws zoo tagnrho rauR&D Laboratories, me -batch ntau lawm kab, thiab SMT chaw ua haujlwm nrog qhov chaw tsawg.

Xaus

PCB warping thaum lub sij hawmreflow soldering txheej txheemyog qhov tseem ceeb ntawm kev sib xyaw ua ke ntawm cov khoom siv, kev hloov pauv kub, thiab thermal stress.

Los ntawm kev tswj qhov kub thiab txias thiab ruaj khov thermal cycling tsim, lubNeoDen IN 6 muab cov kev hloov pauv tau yooj yim thiab txhim khu kev qha reflow soldering tov rau PCB qauv tsim thiab me me -batch manufacturing.

Yog tias koj tab tom nrhiav rau lub desktop reflow soldering tshuab uas tuaj yeem txhim kho PCB soldering stability thiab txo qhov kev pheej hmoo ntawm reflow warpage,thov hu rau pab pawg NeoDen kom tau txais cov lus qhia ntxaws ntxaws rau IN6 thiab SMT cov txheej txheem cov lus pom zoo kom haum rau koj cov khoom.