浙江專業(yè)貼片加工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貼片在生產(chǎn)前實(shí)際上分為幾個(gè)階段。包括開機(jī)檢查、初驗(yàn)、開機(jī)、生產(chǎn)、停機(jī)等，大多數(shù)時(shí)候我們只關(guān)注某一個(gè)細(xì)節(jié)，卻不能解釋得很詳細(xì)。一：在生產(chǎn)設(shè)計(jì)操作頁(yè)面上，點(diǎn)擊選擇按鈕，輸入基板PCB基板選擇窗口；第二步：點(diǎn)擊選擇按鈕，完成基板選擇操作。第"><meta name="keywords" content="浙江專業(yè)貼片加工,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" 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clearfix"><h1>浙江專業(yè)貼片加工中山市浩明電子科技供應(yīng)</h1><div id="2zdpwnk" class="proBig"><div id="zgnuwi3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258719462891/5378899.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="opmebdk" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258719462891/5378899.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="uofqvse" 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>浙江專業(yè)貼片加工,SMT貼片</p><p><span>***更新：</span>2020-09-09 08:11:36</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="w2egdq8" 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="iw3cd2t" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="qevnpwy" class="box"><p><p style="text-indent:25px">SMT貼片在生產(chǎn)前實(shí)際上分為幾個(gè)階段。包括開機(jī)檢查、初驗(yàn)、開機(jī)、生產(chǎn)、停機(jī)等，大多數(shù)時(shí)候我們只關(guān)注某一個(gè)細(xì)節(jié)，卻不能解釋得很詳細(xì)。一：在生產(chǎn)設(shè)計(jì)操作頁(yè)面上，點(diǎn)擊選擇按鈕，輸入基板PCB基板選擇窗口；第二步：點(diǎn)擊選擇按鈕，完成基板選擇操作。第三步：機(jī)器讀取單板數(shù)據(jù)，返回主界面，用工程數(shù)據(jù)驗(yàn)證設(shè)定參數(shù)。調(diào)整導(dǎo)軌，確保PCB基板能以設(shè)定的速度進(jìn)入配線架在主界面，浙江專業(yè)貼片加工，點(diǎn)擊設(shè)備傳輸系統(tǒng)設(shè)備傳輸寬度按鈕，進(jìn)入信息傳輸寬度管理界面。更改后的傳輸寬度作為不同尺寸的輸入基板寬度后，單擊“確定”按鈕連續(xù)調(diào)整設(shè)計(jì)導(dǎo)軌的寬度。然后輕輕推動(dòng)基板，浙江專業(yè)貼片加工，確認(rèn)PCB電路板在傳輸軌道上有大約1mm的非常小的間隙，浙江專業(yè)貼片加工。SMT貼片加工中焊膏中焊劑含量太高，在回流焊過程中過多的焊劑的流動(dòng)導(dǎo)致了元器件的移位。浙江專業(yè)貼片加工</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江專業(yè)貼片加工,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是指利用物理作用、化學(xué)反應(yīng)的方法去除SMT再流焊、波峰焊和手工焊后殘留在表面組裝板表面的助焊劑殘留物及貼片加工組裝工藝過程中造成的污染物、雜質(zhì)的工序污染物對(duì)表面組裝板的危害 1、焊劑和焊音中添加的活化劑帶有少量西化物、酸或鹽，焊接后形成極性殘留物履蓋在焊點(diǎn)表面。當(dāng)電子產(chǎn)品加電時(shí)，極性殘留物的離子就會(huì)朝極性相反的導(dǎo)體遷移，嚴(yán)重時(shí)會(huì)引起短路。 2、目前常用焊劑中的鹵化物、氯化物具有很強(qiáng)的活性和吸濕性，在湘濕的環(huán)境中對(duì)基板和焊點(diǎn)產(chǎn)生腐蝕作用，使基板的表面絕緣電阻下降并產(chǎn)生電遷移，嚴(yán)重時(shí)會(huì)導(dǎo)電，引起短路或斷路。天津貼片元器件SMT生產(chǎn)工藝有兩條基本的工藝流程，即焊膏一回流焊工藝和貼片膠一波峰焊工藝。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江專業(yè)貼片加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258778203125/6865220.png"></div><p style="text-indent:25px">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。</p><p style="text-indent:25px">SMT貼片再流焊：從分析可以看出，再流焊質(zhì)量與PCB焊盤設(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@些問題在生產(chǎn)工藝中是很難甚至無法解決的。因此，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)量是可以通過印刷、貼裝、再流焊每道工序的工藝來控制的。SMT貼片加工易于實(shí)現(xiàn)自動(dòng)化，提高生產(chǎn)效率。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江專業(yè)貼片加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258599423828/8570561.png"></div><p style="text-indent:25px">SMT貼片加工模板制作工藝要求：一、對(duì)模板(焊盤)開口尺寸和形狀的修改要求。通常大于3mm的焊盤，為防止焊膏圖形發(fā)生回陷和預(yù)防錫珠，開口采用“架橋”的方式，線寬為0.4mm，使開口小于3mm，可按焊盤大小均分。各種元件對(duì)模板厚度與開口尺寸要求。 1、μBGA/CSP、?FlipChip采用方形開口比采用圓形開口的印刷質(zhì)量好。 2、當(dāng)使用免清洗焊膏、采用免清洗工藝時(shí)，模板的開口尺寸應(yīng)縮小5%～10%： 3、無鉛工藝模板開口設(shè)計(jì)比有鉛大一些，焊膏盡可能完全覆蓋焊盤。二、適當(dāng)?shù)拈_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)焊盤之間的距離很小，貼片時(shí)兩端焊盤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)矩形焊盤開口的內(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。SMT貼片加工中出現(xiàn)的連錫，漏焊等各種工藝問題。天津貼片元器件</p><p style="text-indent:25px">在一般選擇了SMT貼片加工之后，相應(yīng)的功能情況下電子產(chǎn)品的整體體積會(huì)減少40%~60%。浙江專業(yè)貼片加工</p><p style="text-indent:25px">由于SMT貼片無鉛焊接溫度比有鉛焊接高，尤其大尺寸、多層板，以及有熱容量大的元器件時(shí)，峰值溫度往往要達(dá)到260℃左右，冷卻凝固到室溫的溫差大，因此，無鉛焊點(diǎn)的應(yīng)力也比較大。再加上較多的IMC，IMC的熱膨脹系數(shù)比較大，在高溫工作或強(qiáng)機(jī)械沖擊下容易產(chǎn)生開裂。QFP、Chp元件及BGA焊點(diǎn)空洞，分布在焊接界面的空洞會(huì)影響PCBA中個(gè)元器件的連接強(qiáng)度；SOJ引腳焊點(diǎn)裂紋及BGA焊球與焊盤界面的裂紋缺陷，焊點(diǎn)裂紋和焊接界面的裂紋都會(huì)影響PCBA產(chǎn)品的長(zhǎng)期可靠性。另一類是處于焊接界面的空洞(或稱微孔)，這類空洞非常小，甚至只有通過掃描電子顯微鏡（SEM）才能發(fā)現(xiàn)?？斩吹奈恢煤头植伎赡苁窃斐呻娺B接失效的潛在原因。特別是功率元件空洞測(cè)會(huì)使元件熱阻增大，造成失效。研究表明，焊接界面的空洞（微孔）主要是由于Cu的高溶解性造成的。由于無鉛焊料的熔點(diǎn)高，而且又是高Sn焊料，Cu在無鉛焊接時(shí)的溶解速度比Sn-Pb焊接時(shí)高許多。無鉛焊料中銅的高溶解性會(huì)在銅與焊料的界面產(chǎn)生“空洞”，隨著時(shí)間的推移，這些空洞有可能會(huì)削弱焊點(diǎn)的可靠性。浙江專業(yè)貼片加工</p><p style="text-indent:25px">中山市浩明電子科技有限公司致力于電子元器件，是一家生產(chǎn)型的公司。公司業(yè)務(wù)涵蓋汽車周邊產(chǎn)品，智能電子鎖，藍(lán)牙系列，網(wǎng)絡(luò)直播聲卡等，價(jià)格合理，品質(zhì)有保證。公司秉持誠(chéng)信為本的經(jīng)營(yíng)理念，在電子元器件深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，打造電子元器件良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1214701.html</p></div></div></div></div></div><div id="gpwoqif" class="page-right twoColRt"><div id="u88jldu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vfc7cnf" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="hmjgdp3" 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