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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="flaorg5" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/rzwz888/637303273432421875/5369002.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tzzo4ou" 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>江蘇批量SMT貼片研發(fā),SMT貼片</p><p><span>***更新：</span>2021-01-03 10:15:32</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="jzunpzs" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市潤澤五洲電子科技有限公司</a></p><p><span>聯(lián)系人：</span>劉路</p><p><span>郵箱: </span>6259193@qq.com</p><p><span>電話: </span>15813866860</p><p><span>傳真: </span>0755_</p><p><span>網(wǎng)址: </span>http://www.run-five.com</p><p><span>手機: </span>0755-89884486</p><p><span>地址: </span>龍崗街道南聯(lián)瑞記路1號恒?？萍紙@A棟4樓</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="v2rqued" class="page-proshow02"><p class="title">詳細說明</p><div id="lun4jni" class="box"><p><p style="text-indent:25px">貼片加工中元器件移位的原因分析：SMT貼片加工的主要目的是將表面組裝元器件準確安裝到PCB的固定位置上，而在貼片加工過程中有時會出現(xiàn)一些工藝問題，影響貼片質(zhì)量，如元器件的移位。貼片加工中出現(xiàn)的元器件的移位是元器件板材在焊接過程中出現(xiàn)若干其他問題的伏筆，江蘇批量SMT貼片研發(fā)，江蘇批量SMT貼片研發(fā)，需要重視。那么貼片加工中元器件移位的原因是什么呢?貼片加工中元器件移位的原因：錫膏的使用時間有限，超出使用期限后，導致其中的助焊劑發(fā)生變質(zhì)，焊接不良。錫膏本身的粘性不夠，元器件在搬運時發(fā)生振蕩、搖晃等問題而造成了元器件移位。焊膏中焊劑含量太高，在回流焊過程中過多的焊劑的流動導致元器件移位，江蘇批量SMT貼片研發(fā)。用smt貼片機貼裝的電子產(chǎn)品可靠性高、抗震能力強。江蘇批量SMT貼片研發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇批量SMT貼片研發(fā),SMT貼片" src="https://tyunfile.71360.com/UploadFile/rzwz888/637303273432421875/5369002.png"></div><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)。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%?？煽啃愿?、抗震能力強。焊點低。江蘇批量SMT貼片研發(fā)表面安裝芯片載體有兩大類:陶瓷和塑料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇批量SMT貼片研發(fā),SMT貼片" src="https://tyunfile.71360.com/UploadFile/rzwz888/637303273384580078/2421472.png"></div><p style="text-indent:25px">smt貼片：印刷：其作用是將焊膏或貼片膠漏印到PCB的焊盤上，為元器件的焊接做準備。所用設(shè)備為印刷機（錫膏印刷機），位于SMT生產(chǎn)線的前端。點膠：因現(xiàn)在所用的電路板大多是雙面貼片，為防止二次回爐時投入面的元件因錫膏再次熔化而脫落，故在投入面加裝點膠機，它是將膠水滴到PCB的固定位置上，其主要作用是將元器件固定到PCB板上。所用設(shè)備為點膠機，位于SMT生產(chǎn)線的前端或檢測設(shè)備的后面。有時由于客戶要求產(chǎn)出面也需要點膠，而現(xiàn)在很多小工廠都不用點膠機，若投入面元件較大時用人工點膠。</p><p style="text-indent:25px">貼片加工的質(zhì)量檢測包含來料檢測、工藝檢測和表面組裝板檢測。過程檢測中發(fā)現(xiàn)的質(zhì)量問題，可依照返工情況進行糾正。來料檢測、錫膏印刷和焊前磨練中發(fā)現(xiàn)的不合格品的返工成本相對較低，對電子產(chǎn)品可靠性的影響相對較小。但焊接后不合格品的返工是完全不同的。因為焊后返修需要拆焊后從頭焊接，除了工作時間和材料外，元器件和電路板也會損壞。依照缺陷分析，SMT貼片加工的質(zhì)量檢測過程可以降低缺陷率和廢品率，下降返工維修成本，從源頭上避免質(zhì)量危害的發(fā)生。絲印:其作用是將焊膏或貼片膠漏印到PCB的焊盤上，為元器件的焊接做準備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇批量SMT貼片研發(fā),SMT貼片" src="https://tyunfile.71360.com/UploadFile/rzwz888/637303273219833984/2007240.png"></div><p style="text-indent:25px">簡述smt貼片加工中焊接材料的分類特點：smt貼片加工中焊料按其組成部分，可以分為錫鉛焊料、銀焊料、銅焊料。按照使用的環(huán)境濕度又可分為高溫焊錫(在高溫下使用的焊錫)和低溫焊錫(在低溫環(huán)境下使用的焊料)。常用的焊錫配比如下：錫60%、鉛40%，熔點182℃;錫50%、鉛32%、鎘18%，熔點150℃;錫55%、鉛42%、鉍23%，熔點150℃。焊料的形狀有圓片、帶狀、球狀、焊錫絲等幾種。常用的焊錫絲，在其內(nèi)部夾有固體助焊劑松香。焊錫絲的直徑種類很多，常用的有4mm、3mm、2mm、1.5mm等。長方形無源器件寄生損耗小，被多應用于各類電子產(chǎn)品中。電路板SMT貼片公司</p><p style="text-indent:25px">塑料封裝被多應用于軍、民品生產(chǎn)上，具有良好的性價比。江蘇批量SMT貼片研發(fā)</p><p style="text-indent:25px">元器件是SMT技術(shù)的推動力，而SMT的進步也推動著芯片封裝技術(shù)不斷提升。片式元件是應用早、產(chǎn)量大的表面貼裝元件，自打SMT形成后，相應的IC封裝則開發(fā)出了適用于SMT短引線或無引線的LCCC、PLCC、SOP等結(jié)構(gòu)。四側(cè)引腳扁平封裝（QFP）實現(xiàn)了使用SMT在PCB或其他基板上的表面貼裝，BGA解決了QFP引腳間距極限問題，CSP取代QFP則已是大勢所趨，而倒裝焊接的底層填料工藝現(xiàn)也被大量應用于CSP器件中。顯微鏡、在線測試儀（ICT）、**測試儀、自動光學檢測（AOI）、X-RAY檢測系統(tǒng)、功能測試儀等。位置根據(jù)檢測的需要，可以配置在生產(chǎn)線合適的地方。江蘇批量SMT貼片研發(fā)</p><p style="text-indent:25px">深圳市潤澤五洲電子科技有限公司是一家電子產(chǎn)品設(shè)備、電子玩具、智能玩具、新能源電子產(chǎn)品及設(shè)備、電子元器件、電子零部件的技術(shù)開發(fā)、銷售；電路板的研發(fā)、銷售；計算機軟硬件的技術(shù)開發(fā)；國內(nèi)貿(mào)易（不含專營、專賣、?？厣唐罚?；電子產(chǎn)品設(shè)備、電子玩具、智能玩具、新能源電子產(chǎn)品及設(shè)備、電子元器件、電子零部件、電路板的生產(chǎn)。的公司，致力于發(fā)展為創(chuàng)新務實、誠實可信的企業(yè)。潤澤五洲深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的方案設(shè)計，電路板加工，PCBA OEM，SMT貼片。潤澤五洲致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。潤澤五洲始終關(guān)注電子元器件行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2686953.html</p></div></div></div></div></div><div id="dvoxh9b" 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