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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="dmta23v" class="twoCol"><div id="k8iaskw" 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>?貼片廠家smt 值得信賴中山市浩明電子科技供應(yīng)</p><div id="xheg3qm" class="leftbox clearfix"><h1>貼片廠家smt 值得信賴中山市浩明電子科技供應(yīng)</h1><div id="furdahj" class="proBig"><div id="odubn23" 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="vkmolxz" 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="kzgikgn" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>貼片廠家smt,SMT貼片</p><p><span>***更新：</span>2020-11-11 07:23:12</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="7qa2kjf" 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="kebqrw8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="hgnf7ln" 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，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影響PCBA中個元器件的連接強(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影響PCBA產(chǎn)品的長期可靠性。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，貼片廠家smt。特別是功率元件空洞測會使元件熱阻增大，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，貼片廠家smt，貼片廠家smt，而且又是高Sn焊料，Cu在無鉛焊接時的溶解速度比Sn-Pb焊接時高許多。無鉛焊料中銅的高溶解性會在銅與焊料的界面產(chǎn)生“空洞”，隨著時間的推移，這些空洞有可能會削弱焊點(diǎn)的可靠性。形形**的電器需要各種不同的smt貼片加工工藝來加工。貼片廠家smt</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貼片廠家smt,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258616425782/2441777.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）。空氣過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。浙江貼片smt加工由于SMT貼片無鉛焊接溫度比有鉛焊接高，尤其大尺寸、多層板，有熱容量大的元器件時，峰值溫度要達(dá)到260℃。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貼片廠家smt,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258778203125/6865220.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，會選擇用人工手焊的形式把之后剩余的幾個料焊接上去。那么翼形引腳的手工焊接方法您了解多少呢？一、逐個焊點(diǎn)焊接：1、用鑷子夾持器件，對準(zhǔn)方向使引腳與PCB焊盤對齊，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，焊牢器件斜對角1~2個引腳。3、從***條引腳開始、順序逐個焊點(diǎn)焊接，同時加少許直徑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，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)移法逐個焊點(diǎn)焊接。二、拖焊法：1、用鑷子夾持器件，對準(zhǔn)極性和方向，使引腳與焊盤對齊，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角1~2個引腳。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。</p><p style="text-indent:25px">SMT貼片膠的使用目的：①波峰焊中防止元器件脫落(波峰焊工藝)。在使用波峰焊時，為防止印制板通過焊料槽時元器件掉落，而將元器件固定在印制板上。②再流焊中防止另一面元器件脫落(雙面再流焊工藝)。雙面再流焊工藝中，為防止已焊好的那一面上大型器件因焊料受熱熔化而脫落，要使有SMT貼片膠。③防止元器件位移與立處(再流焊工藝、預(yù)涂敷工藝)。用于再流焊工藝和預(yù)涂敷工藝中防止貼裝時的位移和立片。④作標(biāo)記(波峰焊、再流焊、預(yù)涂敷)。此外，印制板和元器件批量改變時，用貼片膠作標(biāo)記。SMT貼片指的是在PCB基礎(chǔ)上進(jìn)行加工的系列工藝流程簡稱。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="貼片廠家smt,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258735019532/2382925.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)，焊接不良。表面安裝元器件的選擇和設(shè)計(jì)是產(chǎn)品總體設(shè)計(jì)的關(guān)鍵一環(huán)。貼片廠家smt</p><p style="text-indent:25px">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。貼片廠家smt</p><p style="text-indent:25px">smt貼片加工的優(yōu)點(diǎn):組裝密度高、電子產(chǎn)品體積小、重量輕，貼片元件的體積和重量只有傳統(tǒng)插裝元件的1/10左右，一般采用SMT之后，電子產(chǎn)品體積縮小40%~60%，重量減輕60%~80%。可靠性高、抗振能力強(qiáng)。焊點(diǎn)缺陷率低。高頻特性好。減少了電磁和射頻干擾。易于實(shí)現(xiàn)自動化，提高生產(chǎn)效率。降低成本達(dá)30%~50%。節(jié)省材料、能源、設(shè)備、人力、時間等。絲?。浩渥饔檬菍⒑父嗷蛸N片膠漏印到PCB的焊盤上，為元器件的焊接做準(zhǔn)備。所用設(shè)備為絲印機(jī)（絲網(wǎng)印刷機(jī)），位于SMT生產(chǎn)線的較前端。貼片廠家smt</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，擁有一支專業(yè)的技術(shù)團(tuán)隊(duì)。浩明是中山市浩明電子科技有限公司的主營品牌，是專業(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。公司，擁有自己**的技術(shù)體系。公司不**提供專業(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。，同時還建立了完善的售后服務(wù)體系，為客戶提供良好的產(chǎn)品和服務(wù)。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(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/1943519.html</p></div></div></div></div></div><div id="shoqnum" class="page-right twoColRt"><div id="ynkceln" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="i8xuhol" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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