smt元件中山市浩明電子科技供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="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會出現(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。不管是哪種原國所導(dǎo)致的問題要重視。接下來讓由我們"><meta name="keywords" content="smt元件,SMT貼片"><link rel="canonical" href="http://m.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" content="no-transform" /> <meta 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</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="oiahjqs" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vkm3da3" class="box"><p><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會出現(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。不管是哪種原國所導(dǎo)致的問題要重視。接下來讓由我們電子高級工程師為你解答：在SMT貼片加工中為什么會出現(xiàn)元器件移位的原因是什么？針對無器件移位的原因，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)，smt元件，smt元件，焊接不良，smt元件。清潔時不要將酒精酒在SMT貼片機(jī)的吸嘴標(biāo)記上。如果不小心灑上了，要立即將其擦去。smt元件</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="smt元件,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258582382813/5781319.png"></div><p style="text-indent:25px">SMT貼片加工中施加焊膏的工藝目的是把適量的焊膏均勻地施加在PCB的焊盤上，以保證貼片元器件與PCB相對應(yīng)的焊盤達(dá)到良好的電氣連接，并具有足夠的機(jī)械強(qiáng)度。施加焊膏是SMT再流焊工藝的關(guān)鍵工序，施加焊膏有滴涂、絲網(wǎng)印刷和金屬模板印刷3種方法，近年又推出了非接觸式焊膏噴印技術(shù)。其中金屬模板印刷是目前應(yīng)用比較普遍的方法。焊膏印刷是保證SMT貼片質(zhì)量的關(guān)鍵工序。據(jù)資料統(tǒng)計，在PCB設(shè)計規(guī)范、元器件和印制板質(zhì)量有保證的前提下，60％～709％6左右的質(zhì)量問題出在貼片加工印刷工藝。上海貼片smt加工企業(yè)單面SMT貼片：即在單面PCB板上進(jìn)行SMT組裝，單面PCB板的零件是集中在一面，另一面則是導(dǎo)線。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="smt元件,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258851230469/6773526.png"></div><p style="text-indent:25px">SMT貼片加工模板制作工藝要求：一、對模板(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，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，由于兩個焊盤之間的距離很小，貼片時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，加工模板時可將一對矩形焊盤開口的內(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元件底部的焊音粘連。</p><p style="text-indent:25px">SMT貼片加工中造成空洞、裂紋的原因很多，主要有以下方面因素： 1、焊接面（PCB焊盤與元件焊端表面）存在浸潤不良； 2、焊料氧化； 3、焊接面各種材料的膨脹系數(shù)不匹配，焊點凝固時不平穩(wěn)； 4、再流焊溫度曲線的設(shè)置未能使焊音中的有機(jī)揮發(fā)物及水分在進(jìn)入回流區(qū)前揮發(fā)。無鉛焊料的問題是高溫、表面張力大、黏度大。表面張力的增加勢必會使氣體在冷卻階段的外逸更困難，氣體不容易排出來，使空洞的比例增加。因此，SMT貼片中無鉛焊點中的氣孔、空洞比較多。SMT貼片元器件的體積大小和重量**只是傳統(tǒng)插裝元器件的一半甚至是十分之一左右。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="smt元件,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258666201172/1858767.png"></div><p style="text-indent:25px">SMT貼片機(jī)的維護(hù)和保養(yǎng)是整個PCBA制造工序中的重要事情，特別是機(jī)械和電子儀器的保養(yǎng)。所有機(jī)械部分的維護(hù)包括貼裝頭、吸嘴、空氣壓力、潤滑等的的維護(hù)。 1.貼裝頭：空氣通道一為了保證機(jī)器的精確性和安裝速度，要求定期清潔空氣通道（從空氣過濾組件到吸嘴托進(jìn)行吹氣）?？諝膺^濾器一一每星期將空氣過濾器從空氣過濾組件中拿出一次，査看其污染情況。如果被灰塵堵塞，予以更換。 2.吸嘴：如果吸嘴有污物，如焊料，堵在吸嘴里，吸氣就不會有力。如果在吸嘴的底面有污物，會造成漏氣，同時造成進(jìn)行圖像處理時，系統(tǒng)不能識別較小的元件。用酒精清潔吸嘴，用吹風(fēng)機(jī)吹去灰塵（每周至少一次）。檢查橡膠吸墊是否有裂縫和污染。SMT貼片機(jī)的精度和質(zhì)量息息相關(guān)，如果長時間不做清理會造成堵塞氣路，造成氣路不暢。smt元件</p><p style="text-indent:25px">SMT貼片是表面組裝技術(shù)（表面貼裝技術(shù)），是電子組裝行業(yè)里當(dāng)下流行的一種技術(shù)和工藝。smt元件</p><p style="text-indent:25px">從事SMT貼片行業(yè)以來很多的時候我們會被客戶問到，你們的貼片機(jī)怎么樣？是高速機(jī)還是什么機(jī)？是全自動的還是半自動的？你們的貼片機(jī)多少錢一臺？還有的客戶會問，大概多少錢能給架起一條SMT貼片線呢？其實不**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)器長時間的不間斷運(yùn)行，首先各類活動模塊的部分，就會磨損（比如：絲桿、導(dǎo)軌、滑塊，傳動皮帶，馬達(dá)聯(lián)軸器等），跟汽車的保養(yǎng)一樣，潤滑油這部分的保養(yǎng)就必須及時到位。如果長時間的干磨不**會降低機(jī)器在長時間在超負(fù)荷狀態(tài)下的精度對品質(zhì)造成的問題，同時也會加急機(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出現(xiàn)灰塵和積垢，如果積垢長時間的堆積，會對電路的散熱造成致命的損害，溫度過熱會對電路的壽命產(chǎn)生非常大的影響。smt元件</p><p style="text-indent:25px">中山市浩明電子科技有限公司辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，為員工打造良好的辦公環(huán)境。致力于創(chuàng)造***的產(chǎn)品與服務(wù)，以誠信、敬業(yè)、進(jìn)取為宗旨，以建浩明產(chǎn)品為目標(biāo)，努力打造成為同行業(yè)中具有影響力的企業(yè)。公司堅持以客戶為中心、SMT (貼片)+COB(邦定) 來料代加工，擁有8條高精密全自動生產(chǎn)線，可貼裝 0402 、 0201 、SOT 、SOP 、BGA 、FPC插座、USB接口、QFP 、QFN 、PLCC 等各類高精密異形元件，有3臺COB邦機(jī)，全自動固晶機(jī)、封膠機(jī)，能高效率 ***完成邦定需求。市場為導(dǎo)向，重信譽(yù)，保質(zhì)量，想客戶之所想，急用戶之所急，全力以赴滿足客戶的一切需要。中山市浩明電子科技有限公司主營業(yè)務(wù)涵蓋smt貼片，智能電子鎖，藍(lán)牙系列，網(wǎng)絡(luò)直播聲卡，堅持“質(zhì)量保證、良好服務(wù)、顧客滿意”的質(zhì)量方針，贏得廣大客戶的支持和信賴。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1502127.html</p></div></div></div></div></div><div id="onk3g33" class="page-right twoColRt"><div id="2tf3bqm" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cw3rqxe" class="recomPic likePro"><a href="http://m.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="qfcb3ln" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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