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tcPro"><section class="home-main container clearfix"><div id="x3u979m" class="twoCol"><div id="elsk2im" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/second-_dzyqj/">電子元器件</a>?<a href="http://www.cdcfah.com/cp/third-dzyqj_kcdzyqjcl/">庫存電子元器件、材料</a>?江蘇smt電子加工服務(wù)為先中山市浩明電子科技供應(yīng)</p><div id="qvxfzax" class="leftbox clearfix"><h1>江蘇smt電子加工服務(wù)為先中山市浩明電子科技供應(yīng)</h1><div id="3t7ifhj" class="proBig"><div id="m7xm8x8" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258831015625/5527413.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ajvs4ix" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258831015625/5527413.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rbtvkbd" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>江蘇smt電子加工,SMT貼片</p><p><span>***更新：</span>2021-01-09 05:14:39</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ixz8dya" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">中山市浩明電子科技有限公司</a></p><p><span>聯(lián)系人：</span>劉江波</p><p><span>郵箱: </span>smtdong@126.com</p><p><span>電話: </span>13590701587</p><p><span>傳真: </span>0760_23880308</p><p><span>網(wǎng)址: </span>http://www.haomiandianzi.shop.88360.com</p><p><span>手機: </span>0760-23880308</p><p><span>地址: </span>東區(qū)白沙灣第二工業(yè)區(qū)C2幢4樓</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8blktzg" class="page-proshow02"><p class="title">詳細說明</p><div id="bax8spm" class="box"><p><p style="text-indent:25px">SMT有何特點？電子電路表面組裝技術(shù)（Surface Mount Technology，SMT），稱為表面貼裝或表面安裝技術(shù)，江蘇smt電子加工。它是一種將無引腳或短引線表面組裝元器件（簡稱SMC/SMD，中文稱片狀元器件）安裝在印制電路板（Printed Circuit Board，PCB）的表面或其它基板的表面上，通過回流焊或浸焊等方法加以焊接組裝的電路裝連技術(shù)。組裝密度高、電子產(chǎn)品體積小、重量輕，貼片元件的體積和重量只有傳統(tǒng)插裝元件的1/10左右，一般采用SMT之后，電子產(chǎn)品體積縮小40%~60%，重量減輕60%~80%，江蘇smt電子加工?？煽啃愿撸Ksmt電子加工、抗震能力強。焊點缺陷率低。在SMT貼片加工的錫膏中比較常用的錫粉顆粒與助焊劑的體積之比約1：1。江蘇smt電子加工</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇smt電子加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258831015625/5527413.png"></div><p style="text-indent:25px">SMT貼片工藝中，首先對物料進行檢驗，檢查物料的用量、規(guī)格、型號、品質(zhì)、性能是否符合要求；接著刷錫膏，錫膏需要解凍、拌勻，鋼網(wǎng)調(diào)校、錫膏印刷、檢查膏面均勻?qū)φ?；接著使用貼片機進行貼片工藝，需要注意位置、型號、方向、極性、整齊度；為了保證PCB板的品質(zhì)，新品檢員必須以無錯件、錯極、漏件、錯位的高標(biāo)準要求檢查PCB板的貼面，錫膏必須均勻著附好，元件必須高低平整對齊；其次將經(jīng)檢驗合格的PCB板過回流焊，進行250°高溫凝固也就是俗稱回流焊，貼片完成后還要進行AOI的影像檢測，避免在SMT貼片中造成的錯料混料假焊。天津smt貼片代加工廠從事SMT貼片行業(yè)以來很多的時候我們會被客戶問到，你們的貼片機怎么樣？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇smt電子加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258719462891/5378899.png"></div><p style="text-indent:25px">SMT貼片加工焊接后的清洗，對高要求的精密儀表等特殊要求的產(chǎn)品需要做三防處理，三防處理前要求有很高的清潔度，否則在潮熱或高溫等惡劣環(huán)境條件下會造成電性能下降或失效等嚴重后果。由于焊后殘留物的速擋，造成在線測或功能測時測試探針接觸不良，容易出現(xiàn)誤測對于高要求的產(chǎn)品，由于焊后殘留物的遮擋，使一些熱損傷、層裂等缺陷不能暴露出來，造成漏檢而影響可靠性。同時，殘渣多也影響基板的外觀和板卡的商品性。焊后殘留物會影響高密度、多I/O連接點陣列芯片、倒裝芯片的連接可靠性。</p><p style="text-indent:25px">SMT貼片膠的使用目的：①波峰焊中防止元器件脫落(波峰焊工藝)。在使用波峰焊時，為防止印制板通過焊料槽時元器件掉落，而將元器件固定在印制板上。②再流焊中防止另一面元器件脫落(雙面再流焊工藝)。雙面再流焊工藝中，為防止已焊好的那一面上大型器件因焊料受熱熔化而脫落，要使有SMT貼片膠。③防止元器件位移與立處(再流焊工藝、預(yù)涂敷工藝)。用于再流焊工藝和預(yù)涂敷工藝中防止貼裝時的位移和立片。④作標(biāo)記(波峰焊、再流焊、預(yù)涂敷)。此外，印制板和元器件批量改變時，用貼片膠作標(biāo)記。SMT貼片機的精度和質(zhì)量息息相關(guān)，如果長時間不做清理會造成堵塞氣路，造成氣路不暢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇smt電子加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258851230469/6773526.png"></div><p style="text-indent:25px">SMT貼片零件貼裝其作用是將表面組裝元器件準確安裝到PCB的固定位置上。所用設(shè)備為貼片機，位于SMT生產(chǎn)線中印刷機的后面，一般為高速機和泛用機按照生產(chǎn)需求搭配使用?；亓骱附悠渥饔檬菍⒑父嗳诨?，使表面組裝元器件與PCB板牢固焊接在一起。所用設(shè)備為回流焊爐，位于SMT生產(chǎn)線中貼片機的后面，對于溫度要求相當(dāng)嚴格，需要實時進行溫度量測，所量測的溫度以profile的形式體現(xiàn)。AOI光學(xué)檢測其作用是對焊接好的PCB板進行焊接質(zhì)量的檢測。所使用到的設(shè)備為自動光學(xué)檢測機（AOI），位置根據(jù)檢測的需要，可以配置在生產(chǎn)線合適的地方。有些在回流焊接前，有的在回流焊接后維修。SMT貼片加工技術(shù)目前已普遍應(yīng)在電子行業(yè)中?；葜輰I(yè)SMT貼片焊接</p><p style="text-indent:25px">貼片元件的體積和重量只有傳統(tǒng)插裝元件的1/10左右。江蘇smt電子加工</p><p style="text-indent:25px">SMT貼片波峰焊首件焊接并檢驗：1、用自動上板機，或人工把PCB輕輕放在傳送帶（或夾具）上，機器自動完成噴涂助焊劑、干燥、預(yù)熱、波峰焊、冷卻等操作。2、在波峰焊出口處接住PCB。3、按照行業(yè)標(biāo)準《焊點質(zhì)量評定》SJ/T10666-1995或IPC-A-610E進行首件焊接質(zhì)量檢驗。根據(jù)首件焊接結(jié)果調(diào)整焊接參數(shù)，直到質(zhì)量符合要求后才能進行連續(xù)批量生產(chǎn)。PCBA首件檢驗我們之前就已經(jīng)反復(fù)強調(diào)過，其重要性不言而喻。為什么說在波峰焊后要進行首件檢測呢？其實PCBA的主要生產(chǎn)流程是：錫膏印刷、SMT貼片、回流焊焊接、DIP插件、波峰焊焊接。如果沒有問題的話，經(jīng)過了波峰焊焊接的電路板就可以拿回去組裝成完成品了。那么如果我們對一個已經(jīng)走完了生產(chǎn)流程的產(chǎn)品不加檢驗就去生產(chǎn)，如果出現(xiàn)品質(zhì)異常，那么已經(jīng)組裝好的產(chǎn)品也要拆下來重新返修。所以除非是客戶明確表示不用做首件檢測的情況，其余情況下，PCBA加工廠一定要在波峰焊接完成之后進行首件檢測，經(jīng)過檢驗合格之后跟客戶確認，下一步在進行量產(chǎn)和批量生產(chǎn)才是一個可行的方案。江蘇smt電子加工</p><p 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