1-2SMT三大工序簡介

1、SMT三大工序簡介目 錄一 、錫膏印刷機二 、高速貼片機三 、FEEDER的認識四 、泛用機五 、回焊爐一 、錫膏印刷機1.1 SMT三大關(guān)鍵工序1.2 錫膏印刷機（UP2000）1.1SMT三大關(guān)鍵工序印刷貼片回流焊1.2錫膏印刷(UP2000)相關(guān)制程條件:-印刷參數(shù)-錫膏/固定膠-鋼板設(shè)計-刮刀-PCB設(shè)計-自動鋼板清潔 -全視覺識別系統(tǒng)Laser cut and electropolished stencilMetal squeegeeLength:14”&16”Solder paste定位治具PCBCAMERA印刷之OK產(chǎn)品二、高速貼片機(MSH3)-反射識別系統(tǒng) -16個旋轉(zhuǎn)工作頭

2、帶2種Nozzle -最快貼片速度: 0.075 Sec/Comp ,48000comps/hour -貼片零件種類:1005mm Chip18*18mmQFP ,6.5mmHeight.Head unitPCB camera高速機料站排列Feeder三、供料器識別3.1 供料器識別3.2 料帶識別3.1供料器(FEEDER)識別8*4膠帶FEEDER 8*4紙帶FEEDER16*12膠帶FEEDER16*8膠帶FEEDER3.2 FEEDER&料帶識別泛用機FEEDER 泛用機FEEDER型號標示紙 帶 料膠 帶 料何謂W*4P PAPER8W指該可容納料帶寬度為mmP指每推動一下前進mmP

3、APER指該Feeder為紙帶Feeder高速貼片機(MV2VB)相關(guān)制程條件:-貼片參數(shù)-Program-Feeder &Nozzle-來料-反射及透射識別系統(tǒng)-12個旋轉(zhuǎn)工作頭, 5種Nozzle -最快貼片速度: 0.1 Sec/Comp-貼片零件種類:0402mm Chip32*32mmQFP6.5mmHeight.PCB CameraRotaryHead unitParts recg. camera四、泛用機(MPAV2B)-4 個工作頭,自動換Nozzle-Tape Feeder &Tray 供料方式-2D&3D識別系統(tǒng)-最快貼片速度: 0.53 Sec/QFP,0.44Sec/c

4、hipHead unitParts recg. camera-貼片零件種類:1005mm Chip55*55mm QFP L150*W55*H25 ,BGA,CSP貼片OK之產(chǎn)品 回焊爐(Heller 1800exl)相關(guān)制程條件:-Temp profile-錫膏/固定膠品質(zhì)-來料品質(zhì)-全熱風對流-鏈條+鏈網(wǎng)偉送-自動鏈條潤滑五、回焊爐(Heller 1800exl)SP:設(shè)定溫度PV:實際溫度BELT:傳送速度錫膏溫度曲線SMT Reflow Soldering Profile for solder paste (1)Keep the slope low to minimize mother

5、board warping during preheat and cool down.Peak temp215+/-10deg CSlope 3degC/secTime above liquidus 45-90 secondsSlope -2-5degC/secHold at 140-183 deg C for 6090Seconds183 CBoard Temp(預(yù)熱區(qū))(恆溫區(qū))(回焊區(qū))(冷卻區(qū))Time 130-160C range:Extended period allows board temperature to stabilize(warp) and allows flux t

6、o finish cleaning prior to reflow.Also help minimize thermal of reflow.Slope 2degC/secPreheatSoakReflow謝謝觀看/歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH內(nèi)容總結(jié)SMT三大工序簡介。目 錄。Laser cut and electropolished stencil。-最快貼片速度: 0.075 Sec/Comp ,48000comps/hour。-貼片零件種類:1005mm Chip18*18mmQFP ,6.5mmHeight.。膠 帶 料。PAPER指該Feeder為紙帶Feeder。-最快貼片速度: 0.1 Sec/Comp。Parts recg. camera。-Tape Feeder &Tray 供料方式。0.53 Sec/QFP,0.44Sec/chip。1005mm Chip55*55mm QFP L150*W55*H2