Reflow soldering yog dab tsi?
Reflow soldering yog hais txog kev siv cov tshuaj txhuam hniav los txuas ib lossis ntau cov khoom siv hluav taws xob rau cov ntaub ntawv sib cuag, thiab kom yaj lub vuam los ntawm kev tswj cua sov kom ua tiav kev sib txuas mus tas li.Cov txheej txheem cua sov sib txawv xws li reflow ncu, infrared cua sov teeb, lossis phom cua sov tuaj yeem siv.rau vuam.Reflow soldering yog txoj kev siv ntau tshaj plaws rau kev sib txuas cov khoom siv hluav taws xob rau cov ntawv luam tawm los ntawm kev siv tshuab saum npoo av.Lwm txoj hauv kev yog txuas cov khoom siv hluav taws xob los ntawm kev sib txuas ntawm lub qhov.
Lub cev muaj zog ntawm reflow soldering?
Kev ua haujlwm kub ntawm reflow soldering yog siab heev, thiab lub luag haujlwm tseem ceeb ntawm lub cev muaj zog yog tsav lub log cua kom dissipate tshav kub.
Muaj pes tsawg qhov chaw kub thiab txias reflow soldering muaj?Qhov kub thiab txias yog dab tsi?Qhov twg yog qhov tseem ceeb?
Chengyuan reflow soldering yog muab faib ua plaub qhov chaw kub raws li kev ua haujlwm ntawm qhov kub thiab txias: thaj chaw cua sov, thaj chaw kub thiab txias, thaj chaw soldering, thiab thaj chaw txias.
Common reflow soldering nyob rau hauv kev ua lag luam muaj xws li yim kub cheeb tsam reflow soldering, rau kub cheeb tsam reflow soldering, kaum kub cheeb tsam reflow soldering, kaum ob kub cheeb tsam reflow soldering, kaum plaub kub cheeb tsam reflow soldering, thiab lwm yam. Cov no tuaj yeem tsim tau raws li cov neeg siv khoom xav tau.Txawm li cas los xij, tsuas yog yim qhov kub ntawm thaj tsam reflow soldering yog muaj nyob rau hauv kev ua lag luam.Rau reflow soldering nyob rau hauv yim qhov chaw kub, qhov kub thiab txias ntawm txhua cheeb tsam kub yog feem ntau muaj feem xyuam rau solder paste thiab cov khoom yuav tsum tau soldered.Kev ua haujlwm ntawm txhua cheeb tsam yog qhov tseem ceeb heev.Feem ntau hais lus, thaj tsam thawj thiab thib ob yog siv ua thaj chaw ua ntej, thiab thib peb thiab plaub yog thaj chaw ua ntej.Qhov ntsuas kub tsis tu ncua, 678 raws li thaj chaw vuam (qhov tseem ceeb tshaj plaws yog peb thaj chaw), 8 thaj chaw kuj tseem siv tau los ua qhov chaw pabcuam ntawm thaj chaw txias, thiab thaj chaw txias, cov no yog cov tub ntxhais, nws yuav tsum tau hais tias ob peb zones yog tus yuam sij, Cov khoom zoo yuav tsum tau txhim kho, thaj chaw twg yog qhov tseem ceeb!
1. Preheating cheeb tsam
Lub preheating cheeb tsam yog rhuab mus rau 175 degrees, thiab lub sij hawm yog hais txog 100S.Nws tuaj yeem pom los ntawm qhov no tias qhov cua sov ntawm thaj chaw preheating tuaj yeem tau txais (vim tias qhov ntsuas no tau txais kev sim online, nws tsis tau nkag mus rau thaj chaw ua ntej cua sov rau lub sijhawm ntawm 0 txog 46S. , lub sijhawm 146–46 = 100S, vim qhov kub hauv tsev yog 26 degrees 175–26 = 149 degrees cua sov tus nqi 149 degrees / 100S = 1.49 degrees / S)
2. Qhov kub thiab txias tsis tu ncua
Qhov kub siab tshaj plaws nyob rau hauv qhov ntsuas kub tsis tu ncua yog nyob ib puag ncig 200 degrees, lub sijhawm ntev yog 80 vib nas this, thiab qhov sib txawv ntawm qhov kub thiab txias yog 25 degrees.
3. Reflow cheeb tsam
Qhov kub siab tshaj plaws nyob rau hauv cheeb tsam reflow yog 245 degrees, qhov qis tshaj yog 200 degrees, thiab lub sij hawm mus txog lub ncov yog hais txog 35 / S;cua sov hauv cheeb tsam reflow
Tus nqi: 45 degrees / 35S = 1.3 degrees / S Raws li (yuav ua li cas los teeb tsa qhov ntsuas kub kom raug), nws tuaj yeem pom tau tias lub sijhawm rau qhov ntsuas kub no kom ncav cuag tus nqi siab yog ntev dhau.Tag nrho lub sij hawm reflow yog txog 60S
4. Qhov chaw txias
Lub sij hawm nyob rau hauv qhov chaw txias yog li 100S, thiab qhov kub poob los ntawm 245 degrees mus txog 45 degrees.Qhov txias txias yog: 245 ° ~ 45 ° = 200 ° / 100S = 2 ° / S
Post lub sij hawm: Jun-12-2023