順德標(biāo)準(zhǔn)SMT貼片價(jià)格誠(chéng)信互利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貼片加工中施加焊膏的工藝要求：1、施加的焊膏量均勻，一致性好。焊膏圖形要消晰，相鄰的圖形之間盡量不要粘連。焊膏圖形與焊盤圖形要一致，盡量不要錯(cuò)位。2、在一般情況下，焊盤上單位面積的焊膏量應(yīng)為0.8mg/mm3左右:對(duì)卒間距元器件，應(yīng)為"><meta name="keywords" content="順德標(biāo)準(zhǔn)SMT貼片價(jià)格,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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clearfix"><h1>順德標(biāo)準(zhǔn)SMT貼片價(jià)格誠(chéng)信互利中山市浩明電子科技供應(yīng)</h1><div id="g2utamy" class="proBig"><div id="qbi83xz" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258616425782/2441777.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3zy8ghn" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258616425782/2441777.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="foazfwn" 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>順德標(biāo)準(zhǔn)SMT貼片價(jià)格,SMT貼片</p><p><span>***更新：</span>2020-11-14 00:27:50</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="swh3s8w" 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="c2hdpwx" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="enz0i8y" class="box"><p><p style="text-indent:25px">SMT貼片加工中施加焊膏的工藝要求：1、施加的焊膏量均勻，一致性好。焊膏圖形要消晰，相鄰的圖形之間盡量不要粘連。焊膏圖形與焊盤圖形要一致，盡量不要錯(cuò)位。2、在一般情況下，焊盤上單位面積的焊膏量應(yīng)為0.8mg/mm3左右:對(duì)卒間距元器件，應(yīng)為0.5mgmm2左右。3、印刷在基板上的焊膏，順德標(biāo)準(zhǔn)SMT貼片價(jià)格，與希望重量值相比，可允許有一定的偏差，至于焊膏覆蓋每個(gè)焊盤的面積，順德標(biāo)準(zhǔn)SMT貼片價(jià)格，應(yīng)在75％以上。采用免清洗技術(shù)時(shí)，要求焊膏全部位于焊盤上，無鉛要求焊膏完全覆蓋焊盤，順德標(biāo)準(zhǔn)SMT貼片價(jià)格。4、焊膏印刷后，應(yīng)無嚴(yán)重塌落，邊像整齊，錯(cuò)位不大于02mm對(duì)容間距元器件焊盤，錯(cuò)位不大于O0lm。基板表面不允許被焊膏污染。采用免清洗技術(shù)時(shí)，可通過縮小模板開口尺寸的方法，使焊膏全部位于焊盤上。SMT貼片降低成本達(dá)30%~50%。順德標(biāo)準(zhǔn)SMT貼片價(jià)格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="順德標(biāo)準(zhǔn)SMT貼片價(jià)格,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258616425782/2441777.png"></div><p style="text-indent:25px">加工SMT貼片小批量貴是因?yàn)闆]有太多的數(shù)量來分?jǐn)傁鄳?yīng)的費(fèi)用。對(duì)于PCBA加工廠來說：“客戶做1片，跟做10000片所需要的工序流程是沒有一丁點(diǎn)差別的”比如元器件檢測(cè)、存樣入系統(tǒng)、錫膏回溫?cái)嚢?、PCB烘烤、貼片編程、SPI檢測(cè)、AOI檢測(cè)、首件檢測(cè)、老化測(cè)試、組裝包裝出貨等等工序。量不大、工序一樣沒少。較大的成本就在于頻繁的轉(zhuǎn)線、換料，時(shí)間成本和人工成本難以縮減。比較簡(jiǎn)單的就是機(jī)器剛跑起來就要停下來，真的非常影響生產(chǎn)效率。所以如果不是專業(yè)配置打樣線的PCB加工廠。一般也不會(huì)接小批量SMT貼片加工的訂單。珠海專業(yè)SMT貼片設(shè)備SMT貼片加工一個(gè)具有良好的焊點(diǎn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="順德標(biāo)準(zhǔn)SMT貼片價(jià)格,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258778203125/6865220.png"></div><p style="text-indent:25px">SMT貼片加工技術(shù)目前已普遍應(yīng)在在電子行業(yè)中，是實(shí)現(xiàn)電子產(chǎn)品小型化、高集成不可缺少重要貼裝工藝。SMT貼片加工根據(jù)產(chǎn)品類型不同，貼片價(jià)格也是不相同的，在工藝流程上也是有所區(qū)別，下面SMT廠小編就為大家介紹SMT貼片加工常見基本工藝流程：?jiǎn)蚊鍿MT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，是比較基本的PCB板，單面板的貼片加工工藝是比較簡(jiǎn)單的，主要有以下兩種組裝工藝：1、單面組裝工藝流程：來料檢測(cè)—絲印焊膏—貼片—烘干—回流焊接—清洗—檢測(cè)—返修。2、單面混裝工藝流程：來料檢測(cè)—PCB的A面絲印焊膏(點(diǎn)貼片膠)—貼片—烘干—回流焊接—清洗—插件—波峰焊—清洗—檢測(cè)—返修。</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。SMT有關(guān)的技術(shù)組成：電子元件、集成電路的設(shè)計(jì)制造技術(shù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="順德標(biāo)準(zhǔn)SMT貼片價(jià)格,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258582382813/5781319.png"></div><p style="text-indent:25px">SMT貼片再流焊設(shè)備的質(zhì)量：再流焊質(zhì)量與設(shè)各有著十分密切的關(guān)系。影響SMT貼片再流焊質(zhì)量的主要參數(shù)如下。 1、溫度控制精度應(yīng)達(dá)到0.1-0.2℃，溫度傳感器的靈敏度要滿足要求 2、溫度分布的均勻性，無鉛要求傳輸帶橫向溫差＜生2℃，否則很難保證整板的焊接質(zhì)量 3、加熱區(qū)長(zhǎng)度。加熱區(qū)長(zhǎng)度越長(zhǎng)、加熱區(qū)數(shù)量越多，越容易調(diào)整和控制溫度曲線。 4、傳送帶運(yùn)行要平穩(wěn)，傳送帶振動(dòng)會(huì)造成移位、立碑、冷焊等焊接缺陷。 5、加熱效率會(huì)影響溫度曲線的調(diào)整和控制。加熱效率與設(shè)各結(jié)構(gòu)、空氣流動(dòng)設(shè)計(jì)等有關(guān) 6、是否配備氮?dú)獗Ｗo(hù)系統(tǒng)，氮?dú)獗Ｗo(hù)可以減少高溫氧化，提高焊點(diǎn)浸潤(rùn)性 7、應(yīng)具備溫度曲線測(cè)試功能，如果設(shè)備無此配置，應(yīng)外購(gòu)溫度曲線采集器。SMT貼片加工焊點(diǎn)缺陷率低，高頻特性好，減少了電磁和射頻干擾。廣州大批量SMT貼片流程</p><p style="text-indent:25px">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。順德標(biāo)準(zhǔn)SMT貼片價(jià)格</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。順德標(biāo)準(zhǔn)SMT貼片價(jià)格</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，是一家專業(yè)的SMT (貼片)+COB(邦定) 來料代加工，擁有8條高精密全自動(dòng)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(tái)COB邦機(jī)，全自動(dòng)固晶機(jī)、封膠機(jī)，能高效率 ***完成邦定需求。公司。專業(yè)的團(tuán)隊(duì)大多數(shù)員工都有多年工作經(jīng)驗(yàn)，熟悉行業(yè)專業(yè)知識(shí)技能，致力于發(fā)展浩明的品牌。公司堅(jiān)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(dòng)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(tái)COB邦機(jī)，全自動(dòng)固晶機(jī)、封膠機(jī)，能高效率 ***完成邦定需求。市場(chǎng)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(yíng)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(jiān)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://www.cdcfah.com/cp/1976526.html</p></div></div></div></div></div><div id="3a7udp2" class="page-right twoColRt"><div id="eiu4see" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="87z3233" 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="2ft4ta7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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