天津smt電子貼片生產(chǎn) 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="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"><meta name="keywords" content="天津smt電子貼片生產(chǎn),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 http-equiv="Cache-Control" 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id="h8iwiex" class="twoCol"><div id="ghifm2h" 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>?天津smt電子貼片生產(chǎn) 中山市浩明電子科技供應(yīng)</p><div id="hbykho4" class="leftbox clearfix"><h1>天津smt電子貼片生產(chǎn) 中山市浩明電子科技供應(yīng)</h1><div id="cvhelnr" class="proBig"><div id="vkhegxr" 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="y3s8cmi" 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="8x4gcu8" 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>天津smt電子貼片生產(chǎn),SMT貼片</p><p><span>***更新：</span>2020-09-20 08:09:43</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="igs8rda" 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="ds3hxt8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8edacoa" class="box"><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，天津smt電子貼片生產(chǎn)，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，天津smt電子貼片生產(chǎn)。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)。空洞的位置和分布可能是造成電連接失效的潛在原因。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”，天津smt電子貼片生產(chǎn)，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。SMT貼片加工廠在貼片加工中需要注意哪些環(huán)節(jié)?天津smt電子貼片生產(chǎn)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津smt電子貼片生產(chǎn),SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258831015625/5527413.png"></div><p style="text-indent:25px">當(dāng)焊膏印刷，有必要準(zhǔn)備一個(gè)材料粘貼工具，鋼葉片﹑擦拭紙，氣流成洗滌劑﹑攪拌刀。SMT貼片工廠中，我們大多數(shù)的企業(yè)常用的錫膏合金主要成份為Sn/Pb合金，且合金進(jìn)行比例為63/37。焊料的主要成分粘貼分為兩個(gè)部分的錫粉和助焊劑。助焊劑主要是可以起到有效去除氧化物﹑破壞融錫表面進(jìn)行張力和防止再度發(fā)生氧化的作用。錫膏中錫粉顆粒與助熔劑的體積比約為1：1，重量比約為9：1。SMT加工中錫膏使用前必須經(jīng)過解凍和回溫?cái)嚢璨僮骱蟛拍苁褂??；販夭荒芡ㄟ^使用加熱的方式可以進(jìn)行回溫。PCBA制造中比較容易忽視的一個(gè)環(huán)節(jié)就是“BGA、IC芯片的存儲(chǔ)。芯片的存儲(chǔ)要注意包裝和存放在干燥的環(huán)境中，保持**元器件的干燥和抗氧化。很多非常重要的問題可能大家都會(huì)注意到，但是在一些細(xì)節(jié)的問題上,我們經(jīng)常會(huì)忽視，往往這些也同樣需要SMT貼片加工中需要特別注意。天津smt電子貼片生產(chǎn)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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津smt電子貼片生產(chǎn),SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258649472657/2463037.png"></div><p style="text-indent:25px">SMT貼片加工的主要目的是將表面組裝元器件準(zhǔn)確安裝到PCB的固定位置上，而在貼片加工過程中有時(shí)會(huì)出現(xiàn)一些工藝問題，影響貼片質(zhì)量，如元器件的移位，SMT貼片加工中出現(xiàn)的連錫，漏焊等各種工藝問題。不管是哪種原國(guó)所導(dǎo)致的問題要重視。接下來讓由我們電子高級(jí)工程師為你解答：在SMT貼片加工中為什么會(huì)出現(xiàn)元器件移位的原因是什么？針對(duì)無器件移位的原因，貼片加工中元器件移位的原因：錫膏的使用時(shí)間有限，超出使用期限后，導(dǎo)致其中的助焊劑發(fā)生變質(zhì)，焊接不良。</p><p style="text-indent:25px">從事SMT貼片行業(yè)以來很多的時(shí)候我們會(huì)被客戶問到，你們的貼片機(jī)怎么樣？是高速機(jī)還是什么機(jī)？是全自動(dòng)的還是半自動(dòng)的？你們的貼片機(jī)多少錢一臺(tái)？還有的客戶會(huì)問，大概多少錢能給架起一條SMT貼片線呢？其實(shí)不**是客戶關(guān)心關(guān)注我們的貼片機(jī)，作為SMT貼片加工廠商，貼片機(jī)就是我們吃飯的飯碗，那么如何維護(hù)好SMT貼片機(jī)，就是我們必須要考慮的問題。那么貼片機(jī)如何維護(hù)好呢？1.機(jī)械活動(dòng)模組部分。如果要是超負(fù)荷的去使用，那么就需要機(jī)器長(zhǎng)時(shí)間的不間斷運(yùn)行，首先各類活動(dòng)模塊的部分，就會(huì)磨損（比如：絲桿、導(dǎo)軌、滑塊，傳動(dòng)皮帶，馬達(dá)聯(lián)軸器等），跟汽車的保養(yǎng)一樣，潤(rùn)滑油這部分的保養(yǎng)就必須及時(shí)到位。如果長(zhǎng)時(shí)間的干磨不**會(huì)降低機(jī)器在長(zhǎng)時(shí)間在超負(fù)荷狀態(tài)下的精度對(duì)品質(zhì)造成的問題，同時(shí)也會(huì)加急機(jī)器使用壽命的衰減。2.電路管網(wǎng)及表面處理。只要有空氣的地方就避免不了會(huì)出現(xiàn)灰塵和積垢，如果積垢長(zhǎng)時(shí)間的堆積，會(huì)對(duì)電路的散熱造成致命的損害，溫度過熱會(huì)對(duì)電路的壽命產(chǎn)生非常大的影響。SMT貼片氣路模組:氣路是貼片機(jī)正常運(yùn)作的關(guān)鍵因素，包括電磁閥、真空發(fā)生裝置、氣缸部分。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津smt電子貼片生產(chǎn),SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258632216797/5876714.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，特別是常見的翼形引腳元件比較常見。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焊盤對(duì)齊，居中貼放在相應(yīng)的焊盤上。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***條引腳開始、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，使引腳與焊盤對(duì)齊，居中貼放在相應(yīng)的焊盤上，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***條引腳開始、順序向下緩慢勻速拖拉烙鐵，將器件兩側(cè)全部焊牢。SMT貼片加工可靠性高、抗振能力強(qiáng)。天津smt電子貼片生產(chǎn)</p><p style="text-indent:25px">SMT貼片加工過程中有時(shí)會(huì)出現(xiàn)一些工藝問題。天津smt電子貼片生產(chǎn)</p><p style="text-indent:25px">隨著SMT貼片加工的飛速發(fā)展,不但元器件的尺寸越來越小、SMT貼片元件密度越來越高,而且還不斷推出新型封裝形式,為了適應(yīng)高密度、高難度的電路板組裝技術(shù)的需要,貼裝機(jī)正在向高速度、高精度、多功能和模塊化、智能化方向發(fā)展。貼片加工設(shè)備的高速度：1.“飛行對(duì)中”技術(shù)。飛行對(duì)中技術(shù)把CCD圖像傳感器直接安裝在貼裝頭上,一起運(yùn)動(dòng),實(shí)現(xiàn)了在拾起器件后,在運(yùn)動(dòng)到印制電路板貼裝位置的過程中對(duì)元件進(jìn)行光學(xué)對(duì)中。2.高速SMT貼片機(jī)模塊化。3.雙路輸送結(jié)構(gòu)。在保留傳統(tǒng)單路貼裝機(jī)的性能下,將PCB的輸送、定位、檢測(cè)等設(shè)計(jì)成雙路結(jié)構(gòu),這種雙路結(jié)構(gòu)的貼裝機(jī),其工作方式可分為同步方式和異步方式。同步方式運(yùn)轉(zhuǎn)時(shí),完成兩塊大小相同的印制板的器件貼裝;異步方式運(yùn)轉(zhuǎn)時(shí),當(dāng)一塊印制板在進(jìn)行器件貼裝時(shí),另一塊印制板完成傳送、基準(zhǔn)對(duì)準(zhǔn)、壞板檢查等步驟,從而提高SMT加工廠的生產(chǎn)效率。天津smt電子貼片生產(chǎn)</p><p style="text-indent:25px">中山市浩明電子科技有限公司位于東區(qū)白沙灣第二工業(yè)區(qū)C2幢4樓。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下汽車周邊產(chǎn)品，智能電子鎖，藍(lán)牙系列，網(wǎng)絡(luò)直播聲卡深受客戶的喜愛。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于電子元器件行業(yè)的發(fā)展。浩明電子立足于全國(guó)市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1352729.html</p></div></div></div></div></div><div id="fzgiu88" class="page-right twoColRt"><div id="velxy2r" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qkmdkgs" 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 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