中山邦定SMT貼片焊接誠(chéng)信經(jīng)營(yíng) 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(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="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(chēng)，PCB（PrintedCircuitBoard)為印刷電路板，中山邦定SMT貼片焊接。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)，中山邦定SMT貼片焊接，首先我們先核對(duì)其"><meta name="keywords" content="中山邦定SMT貼片焊接,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" /> 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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="yspwdug" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258582382813/5781319.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="aj7mx2a" 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>中山邦定SMT貼片焊接,SMT貼片</p><p><span>***更新：</span>2021-01-31 02:13:28</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="33yvm3e" 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="cbyqs7o" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="onelclg" class="box"><p><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(chēng)，PCB（Printed Circuit Board)為印刷電路板，中山邦定SMT貼片焊接。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)，中山邦定SMT貼片焊接，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)，中山邦定SMT貼片焊接，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是表面組裝技術(shù)（表面貼裝技術(shù)），是目前電子組裝行業(yè)里非常流行的一種技術(shù)和工藝。中山邦定SMT貼片焊接</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中山邦定SMT貼片焊接,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258582382813/5781319.png"></div><p style="text-indent:25px">SMT貼片加工過(guò)程需要注意的事項(xiàng)：1、SMT貼片技術(shù)員佩戴好檢驗(yàn)OK的靜電環(huán)，插件前檢查每個(gè)訂單的電子元件無(wú)錯(cuò)/混料、破損、變形、劃傷等不良現(xiàn)象；2、電路板的插件板需要提前把電子物料準(zhǔn)備好，注意電容極性方向須正確無(wú)誤。3、SMT印刷作業(yè)完畢后進(jìn)行無(wú)漏插、反插、錯(cuò)位等不良產(chǎn)品的檢查，將良好的上錫完成品流入下一工序。4、SMT貼片組裝作業(yè)前請(qǐng)配戴靜電環(huán),金屬片緊貼手腕皮膚并保持接地良好,雙手交替作業(yè)。5、USB/IF座子/屏蔽罩/高頻頭/網(wǎng)口端子等金屬元件,插件時(shí)須戴手指套作業(yè)。6、所插元器件位置、方向須正確無(wú)誤,元件平貼板面,架高元件必須插到K腳位置。7、如有發(fā)現(xiàn)物料與SOP以及BOM表上規(guī)格不一致時(shí),須及時(shí)向班/組長(zhǎng)報(bào)告。8、物料需輕拿輕放不可將經(jīng)過(guò)SMT前期工序的PCB板掉落而導(dǎo)致元件受損,晶振掉落不可使用。9、上下班前請(qǐng)將工作臺(tái)面整理干凈,并保持清潔。10、嚴(yán)格遵守作業(yè)區(qū)操作規(guī)則，首件檢測(cè)區(qū)、待檢區(qū)、不良區(qū)、維修區(qū)、少料區(qū)的產(chǎn)品嚴(yán)禁私自隨意擺放，上下班交接要注明未完工序。杭州電橋點(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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中山邦定SMT貼片焊接,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258649472657/2463037.png"></div><p style="text-indent:25px">一般的有機(jī)溶劑清洗或超聲波清洗氣體技術(shù)，是SMT貼片加工中比較普遍使用的高清洗，清洗效率高技術(shù)超聲波清洗的作用超聲波技術(shù)能夠進(jìn)行清洗元件底部、元件企業(yè)之間及細(xì)小間隙中的污染物，適合對(duì)高密度、窄間距以及表面組裝板及污染較嚴(yán)重SMA的焊后清洗。由于超聲波振動(dòng)會(huì)產(chǎn)生較大的沖擊力，并具有一定的穿透元器件的能力，可以穿透到封裝材料的層層阻隔進(jìn)入到器件的內(nèi)部，損壞IC的內(nèi)部連接。清洗劑在超聲波的作用下產(chǎn)生形成孔穴結(jié)構(gòu)作用和擴(kuò)散影響作用。孔會(huì)產(chǎn)生很強(qiáng)的沖擊力，使附著在表面的污染物被清理掉；超聲波振動(dòng)，使清洗劑中的液體顆粒產(chǎn)生擴(kuò)散，加速清洗劑溶解污染物的速度。由于清潔劑液體可以被沖成工件的比較小間隙，產(chǎn)生空隙和擴(kuò)散劑在清潔液中的任何部分中，底部構(gòu)件可以被清潔，貼片加工元件和污染物之間的小間隙。超聲波清洗時(shí)產(chǎn)生孔穴的數(shù)量、孔穴的大小及清洗劑振動(dòng)的力度與壓電振子的振動(dòng)功率和頻率有關(guān)，孔穴的密度和孔穴的尺寸越大，清洗效率越高。應(yīng)調(diào)整到孔穴的密度和尺寸盡量較大。</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(hù)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(hù)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。SMT貼片工序簡(jiǎn)單，焊接缺陷較少，適合于自動(dòng)化生產(chǎn)，生產(chǎn)效率也高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中山邦定SMT貼片焊接,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258869951172/8176008.png"></div><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。SMT貼片的檢測(cè)內(nèi)容主要分為來(lái)料檢測(cè)、工序檢測(cè)及表面組裝板檢測(cè)等。江門(mén)電子SMT貼片廠</p><p style="text-indent:25px">SMT貼片機(jī)的常用知識(shí)大全。中山邦定SMT貼片焊接</p><p style="text-indent:25px">SMT貼片進(jìn)行涂敷的主要目的是將膠水或焊膏精確地涂敷于PCB上，使貼片工序貼裝的元器件能夠粘在PCB焊盤(pán)上。按照涂數(shù)方式的不同表面涂數(shù)工藝可分為以下幾種。根據(jù)SMT貼片加工焊膏與貼片膠組成成分的不同，焊膏涂敷通常采用模板絲網(wǎng)印刷工藝、噴涂工藝、點(diǎn)涂工藝，貼片膠涂敷通常采用注射點(diǎn)涂工藝、針式轉(zhuǎn)移工藝、絲網(wǎng)模板印刷工藝，二者的優(yōu)先選擇順序也分別是模板絲網(wǎng)印工藝和注射點(diǎn)涂工藝。SMT貼片涂敷工藝及設(shè)備：焊膏或貼片膠涂敷時(shí)，SMT加工廠大批量生產(chǎn)一般使用大型自動(dòng)化設(shè)備，諸如，印刷機(jī)、點(diǎn)膠機(jī)、點(diǎn)膏機(jī)等。小批量或手工涂敷時(shí)，通常采用臺(tái)式點(diǎn)膠或點(diǎn)膏機(jī)、臺(tái)式印劇機(jī)甚至手工涂敷。中山邦定SMT貼片焊接</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3086225.html</p></div></div></div></div></div><div id="obtq87d" class="page-right twoColRt"><div id="mb8q8re" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="77f3dul" 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" 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