南通樣片smt貼片服務(wù)為先中山市浩明電子科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="SMT貼片再流焊：從分析可以知道，再流焊質(zhì)量與PCB焊盤(pán)設(shè)計(jì)、元器件可焊性、焊膏質(zhì)量、印制電路板的加工質(zhì)量、生產(chǎn)線設(shè)備，以及SMT每道工序的工藝參數(shù)、操作人員的操作都有密切的關(guān)系。同時(shí)也可以看出，PCB設(shè)計(jì)、PCB加工質(zhì)量、元器件和焊膏質(zhì)量"><meta name="keywords" content="南通樣片smt貼片,SMT貼片"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta 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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="3h2hu3e" class="twoCol"><div id="onpmyfr" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<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(kù)存電子元器件、材料</a>?南通樣片smt貼片服務(wù)為先中山市浩明電子科技供應(yīng)</p><div id="ujg2kur" class="leftbox clearfix"><h1>南通樣片smt貼片服務(wù)為先中山市浩明電子科技供應(yīng)</h1><div id="k23dahj" class="proBig"><div id="iug3dfm" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258649472657/2463037.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ynpj8y7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258649472657/2463037.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rq38pb7" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>南通樣片smt貼片,SMT貼片</p><p><span>***更新：</span>2021-01-28 03:09:51</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="838fbta" 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(jī): </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="q7hg9qk" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="qcz87zl" class="box"><p><p style="text-indent:25px">SMT貼片再流焊：從分析可以知道，再流焊質(zhì)量與PCB焊盤(pán)設(shè)計(jì)、元器件可焊性、焊膏質(zhì)量、印制電路板的加工質(zhì)量、生產(chǎn)線設(shè)備，以及SMT每道工序的工藝參數(shù)、操作人員的操作都有密切的關(guān)系。同時(shí)也可以看出，PCB設(shè)計(jì)、PCB加工質(zhì)量、元器件和焊膏質(zhì)量是保證再流焊質(zhì)量的基礎(chǔ)，因?yàn)檫@些問(wèn)題在生產(chǎn)工藝中是很難甚至無(wú)法解決的。因此，南通樣片smt貼片，只要PCB設(shè)計(jì)正確，PCB、元器件和焊膏都是合格的，再流焊質(zhì)量是可以通過(guò)印刷、貼裝，南通樣片smt貼片、再流焊每道工序的工藝來(lái)控制的，南通樣片smt貼片。SMT貼片吸嘴端面有臟物或有裂紋,造成漏氣。南通樣片smt貼片</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通樣片smt貼片,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258649472657/2463037.png"></div><p style="text-indent:25px">在SMT貼片加工的日常工作中，我們經(jīng)常會(huì)遇到一些做電力電子、電源、工業(yè)控制、充電樁的產(chǎn)品。上面大多數(shù)都是DIP插件物料，而且很多的物料因?yàn)楦N片物料的耐溫性和加工要求不一致，就需要用到手工焊接，特別是常見(jiàn)的翼形引腳元件比較常見(jiàn)。一般情況下如果是不能機(jī)貼的話，會(huì)選擇用人工手焊的形式把之后剩余的幾個(gè)料焊接上去。那么翼形引腳的手工焊接方法您了解多少呢？一、逐個(gè)焊點(diǎn)焊接：1、用鑷子夾持器件，對(duì)準(zhǔn)方向使引腳與PCB焊盤(pán)對(duì)齊，居中貼放在相應(yīng)的焊盤(pán)上。2、選用圓錐形或鑿子形烙鐵頭，焊牢器件斜對(duì)角1~2個(gè)引腳。3、從引腳開(kāi)始、順序逐個(gè)焊點(diǎn)焊接，同時(shí)加少許直徑0.5mm（或更細(xì)一些）的焊錫絲，將器件兩側(cè)或四周引腳全部焊牢。窄間距時(shí)，不容易控制焊錫絲的送入量，因此也可以涂助焊劑，然后用轉(zhuǎn)移法逐個(gè)焊點(diǎn)焊接。二、拖焊法：1、用鑷子夾持器件，對(duì)準(zhǔn)極性和方向，使引腳與焊盤(pán)對(duì)齊，居中貼放在相應(yīng)的焊盤(pán)上，用圓錐或鑿子形烙鐵頭先焊牢器件斜對(duì)角1~2個(gè)引腳。2、涂助焊劑。3、給烙鐵頭上錫。4、從引腳開(kāi)始、順序向下緩慢勻速拖拉烙鐵，將器件兩側(cè)全部焊牢。南通樣片smt貼片雙面SMT貼片：雙面PCB板是兩面都有布線，必須要在兩面間有適當(dāng)?shù)碾娐愤B接才行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通樣片smt貼片,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258851230469/6773526.png"></div><p style="text-indent:25px">SMT貼片基本工藝構(gòu)成要素包括:絲?。ɑ螯c(diǎn)膠）,貼裝（固化）,回流焊接,清洗,檢測(cè),返修。1、絲?。浩渥饔檬菍⒑父嗷蛸N片膠漏印到PCB的焊盤(pán)上，為元器件的焊接做準(zhǔn)備。所用設(shè)備為絲印機(jī)（絲網(wǎng)印刷機(jī)），位于SMT生產(chǎn)線的比較前端。2、點(diǎn)膠：它是將膠水滴到PCB板的固定位置上，其主要作用是將元器件固定到PCB板上。所用設(shè)備為點(diǎn)膠機(jī)，位于SMT生產(chǎn)線的比較前端或檢測(cè)設(shè)備的后面。3、貼裝：其作用是將表面組裝元器件準(zhǔn)確安裝到PCB的固定位置上。所用設(shè)備為貼片機(jī)，位于SMT生產(chǎn)線中絲印機(jī)的后面。SMT貼片指的是在PCB基礎(chǔ)上進(jìn)行加工的系列工藝流程的簡(jiǎn)稱，PCB（Printed Circuit Board)為印刷電路板。</p><p style="text-indent:25px">SMT貼片加工模板制作的工藝要求：一、對(duì)模板(焊盤(pán))開(kāi)口尺寸和形狀的修改要求。通常大于3mm的焊盤(pán)，為防止焊膏圖形發(fā)生回陷和預(yù)防錫珠，開(kāi)口采用“架橋”的方式，線寬為0.4mm，使開(kāi)口小于3mm，可按焊盤(pán)大小均分。各種元件對(duì)模板厚度與開(kāi)口尺寸要求。1、μBGA/CSP、FlipChip采用方形開(kāi)口比采用圓形開(kāi)口的印刷質(zhì)量好。2、當(dāng)使用免清洗焊膏、采用免清洗工藝時(shí)，模板的開(kāi)口尺寸應(yīng)縮小5%～10%：3、無(wú)鉛工藝模板開(kāi)口設(shè)計(jì)比有鉛大一些，焊膏盡可能完全覆蓋焊盤(pán)。二、適當(dāng)?shù)拈_(kāi)口形狀可改善SMT貼片加工效果。例如，當(dāng)Chip元件尺寸小于公制1005時(shí)，由于兩個(gè)焊盤(pán)之間的距離很小，貼片時(shí)兩端焊盤(pán)上的焊膏在元件底部很容易粘連，再流焊后很容易產(chǎn)生元件底部的橋接和焊球。因此，加工模板時(shí)可將一對(duì)矩形焊盤(pán)開(kāi)口的內(nèi)側(cè)修改成尖角形或弓形，減少元件底部的焊膏量，這樣可以改善貼片時(shí)元件底部的焊音粘連。加工SMT貼片過(guò)程中就需要了解元器件移位的原因，并針對(duì)性進(jìn)行解決。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通樣片smt貼片,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258702304688/5407070.png"></div><p style="text-indent:25px">SMT貼片指的是在PCB基礎(chǔ)上進(jìn)行加工的系列工藝流程的簡(jiǎn)稱，PCB（Printed Circuit Board)為印刷電路板。制作首件時(shí)發(fā)現(xiàn)時(shí)實(shí)物與SMT貼片位置圖的參數(shù)不一致時(shí)，首先我們先核對(duì)其原始BOM，查一下到底是哪一個(gè)環(huán)節(jié)出錯(cuò)，如果是SMT貼片位置圖問(wèn)題，馬上反饋給品質(zhì)相關(guān)人員處。如果是工程程式打錯(cuò)，則通知工程更換程序。更正之后需再次核對(duì)整塊板。紅膠板要測(cè)試其拉力。測(cè)試OK的板正常過(guò)爐之后，我們需檢查其焊接效果。當(dāng)正常生產(chǎn)時(shí)，如果同一位置或同一種缺陷多次出現(xiàn)時(shí)，我們應(yīng)立即通知工程改善，并監(jiān)督改善情況。正常情況下一訂單只做一次首件并保留到清尾。加工SMT貼片小批量貴是因?yàn)闆](méi)有太多數(shù)量來(lái)分?jǐn)傁鄳?yīng)的費(fèi)用。SMT貼片加工過(guò)程中有時(shí)會(huì)出現(xiàn)一些工藝問(wèn)題。天津smt貼片代加工生產(chǎn)</p><p style="text-indent:25px">SMT貼片表面安裝元器件在功能上和插裝元器件沒(méi)有差別，其不同之處在于元器件的封裝。南通樣片smt貼片</p><p style="text-indent:25px">SMT貼片波峰焊首件焊接并檢驗(yàn)：1、用自動(dòng)上板機(jī)，或人工把PCB輕輕放在傳送帶（或夾具）上，機(jī)器自動(dòng)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(zhǔn)《焊點(diǎn)質(zhì)量評(píng)定》SJ/T10666-1995或IPC-A-610E進(jìn)行首件焊接質(zhì)量檢驗(yàn)。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(jìn)行連續(xù)批量生產(chǎn)。PCBA首件檢驗(yàn)我們之前就已經(jīng)反復(fù)強(qiáng)調(diào)過(guò)，其重要性不言而喻。為什么說(shuō)在波峰焊后要進(jìn)行首件檢測(cè)呢？其實(shí)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(méi)有問(wèn)題的話，經(jīng)過(guò)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(duì)一個(gè)已經(jīng)走完了生產(chǎn)流程的產(chǎn)品不加檢驗(yàn)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(lái)重新返修。所以除非是客戶明確表示不用做首件檢測(cè)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(jìn)行首件檢測(cè)，經(jīng)過(guò)檢驗(yàn)合格之后跟客戶確認(rèn)，下一步在進(jìn)行量產(chǎn)和批量生產(chǎn)才是一個(gè)可行的方案。南通樣片smt貼片</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3042339.html</p></div></div></div></div></div><div id="qkcbfgs" class="page-right twoColRt"><div id="k8kh9ne" class="box01 margin10 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