上海中小批量smt貼片加工歡迎來(lái)電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貼片膠的工藝特性：連接強(qiáng)度：SMT貼片膠必須具備較強(qiáng)的連接強(qiáng)度，上海中小批量smt貼片加工，在被硬化后，即使在焊料熔化的溫度也不剝離。點(diǎn)涂性：目前對(duì)印制板的分配方式多采用點(diǎn)涂方式，因此要求膠要具有以下性能：①適應(yīng)各種貼裝工藝；②易于設(shè)"><meta name="keywords" content="上海中小批量smt貼片加工,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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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="fumovmj" 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>上海中小批量smt貼片加工,SMT貼片</p><p><span>***更新：</span>2020-12-24 07:14:59</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="t8likh8" 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="tsuwykh" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="wgd8oq2" class="box"><p><p style="text-indent:25px">SMT貼片膠的工藝特性：連接強(qiáng)度：SMT貼片膠必須具備較強(qiáng)的連接強(qiáng)度，上海中小批量smt貼片加工，在被硬化后，即使在焊料熔化的溫度也不剝離。點(diǎn)涂性：目前對(duì)印制板的分配方式多采用點(diǎn)涂方式，因此要求膠要具有以下性能：①適應(yīng)各種貼裝工藝；②易于設(shè)定對(duì)每種元器件的供給量；③簡(jiǎn)單適應(yīng)更換元器件品種；④點(diǎn)涂量穩(wěn)定。適應(yīng)高速機(jī)：現(xiàn)在使用的貼片膠必須滿足點(diǎn)涂和高速貼片機(jī)的高速化，具體講，上海中小批量smt貼片加工，就是高速點(diǎn)涂無(wú)拉絲，再者就是高速貼裝時(shí)，印制板在傳送過(guò)程中，貼片膠的粘性要保證元器件不移動(dòng)。拉絲、塌落：貼片膠一旦沾在焊盤(pán)上，元器件就無(wú)法實(shí)現(xiàn)與印制板的電氣性連接，上海中小批量smt貼片加工，所以，貼片膠必須是在涂布時(shí)無(wú)拉絲、涂布后無(wú)塌落，以免污染焊盤(pán)。SMT生產(chǎn)工藝有兩條基本的工藝流程，即焊膏一回流焊工藝和貼片膠一波峰焊工藝。上海中小批量smt貼片加工</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海中小批量smt貼片加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258702304688/5407070.png"></div><p style="text-indent:25px">SMT貼片可以設(shè)計(jì)的更輕薄短小，零件變得更小，電路板的體積也會(huì)變得更??；設(shè)計(jì)出更先進(jìn)的產(chǎn)品，可以讓電子產(chǎn)品應(yīng)用到更多領(lǐng)域，比如CPU和智能手機(jī)；適合大量生產(chǎn)，因?yàn)镾MT技術(shù)代替了人工插件作業(yè)，以自動(dòng)化貼片機(jī)來(lái)放置電子零件，所以更適合大量生產(chǎn)出***的產(chǎn)品，并且更穩(wěn)定。降低生產(chǎn)成本，SMT整線設(shè)備基本實(shí)現(xiàn)了全自動(dòng)化，從印刷機(jī)到貼片機(jī)再到回流焊，不僅提高了產(chǎn)能，同時(shí)降低了人力成本。貼片價(jià)錢(qián)稍微高一點(diǎn)的廠家，會(huì)有質(zhì)量控制流程，也能提供更好的交貨周期和效力?？蛻舾鶕?jù)自身情況，選擇SMT貼片供應(yīng)商。清遠(yuǎn)邦定SMT貼片SMT貼片加工中一旦出現(xiàn)元器件移位，就會(huì)影響電路板的使用性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海中小批量smt貼片加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258599423828/8570561.png"></div><p style="text-indent:25px">SMT貼片紅膠是一種聚稀化合物，主要成份為基料（即主體高份子材料）、填料、固化劑、其它助劑等。SMT貼片紅膠具有粘度流動(dòng)性，溫度特性，潤(rùn)濕特性等。根據(jù)紅膠的這個(gè)特性，故在生產(chǎn)中，利用紅膠的目的就是使零件牢固地粘貼于PCB表面，防止其掉落。因此貼片膠是屬于純消耗非必需的工藝過(guò)程產(chǎn)物，現(xiàn)在隨著PCA設(shè)計(jì)與工藝的不斷改進(jìn)，通孔回流焊、雙面回流焊都已實(shí)現(xiàn)，用到貼片膠的PCA貼裝工藝呈越來(lái)越少的趨勢(shì)。SMT貼片膠的儲(chǔ)存：在室溫下可儲(chǔ)存7天，在小于5℃時(shí)儲(chǔ)存大于個(gè)6月，在5～25℃可儲(chǔ)存大于30天。</p><p style="text-indent:25px">SMT貼片校對(duì)檢查并備份貼片程序：①按PCBA工藝文件中的元器件明細(xì)表，校對(duì)程序中每一步的元件名稱(chēng)、位號(hào)、型號(hào)規(guī)格是否正確，對(duì)不正確處按工藝文件進(jìn)行修正。②檢查貼裝機(jī)每個(gè)供料器站上的元器件與拾片程序表是否一致。③在貼裝機(jī)上用主攝像頭檢查每一步元器件的X、Y坐標(biāo)是否與PCB上的元件中心一致，對(duì)照工藝文件中的元件位置示意圖檢查轉(zhuǎn)角Θ是否正確，對(duì)不正確處進(jìn)行修正。（如果不執(zhí)行本步驟，可在SMT首件貼裝后按照實(shí)際貼裝偏差進(jìn)行修正）④將完全正確的產(chǎn)品程序復(fù)制到備份U盤(pán)中保存，校對(duì)檢查完全正確后才能進(jìn)行生產(chǎn)。SMT貼片加工中出現(xiàn)的連錫，漏焊等各種工藝問(wèn)題。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海中小批量smt貼片加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258831015625/5527413.png"></div><p style="text-indent:25px">SMT貼片加工要求各裝配位號(hào)元器件的類(lèi)型、型號(hào)、標(biāo)稱(chēng)值和極性等特征標(biāo)記要符合產(chǎn)品的裝配圖和BOM表要求，不能貼錯(cuò)位置。SMT貼片加工時(shí)元器件的端頭或引腳均和焊盤(pán)圖形要盡量對(duì)齊、居中，還要確保元件焊端接觸焊膏圖形。兩個(gè)端頭的Chip元件自定位效應(yīng)的作用比較大，貼裝時(shí)元件寬度方向有3/4以上搭接在焊盤(pán)上,長(zhǎng)度方向兩個(gè)端頭只要搭接到相應(yīng)的焊盤(pán)上并接觸焊膏圖形，再流焊時(shí)就能夠自定位，但如果其中一個(gè)端頭沒(méi)有搭接到焊盤(pán)上或沒(méi)有接觸焊膏圖形，再流焊時(shí)就會(huì)產(chǎn)生移位或吊橋；BGA的焊球與相對(duì)應(yīng)的焊盤(pán)一一對(duì)齊；焊球的中心與焊盤(pán)中心的較大偏移量小于1/2焊球直徑。清潔時(shí)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。深圳自動(dòng)SMT貼片廠家</p><p style="text-indent:25px">一般采用SMT之后，電子產(chǎn)品體積縮小40%~60%，重量減輕60%~80%。上海中小批量smt貼片加工</p><p style="text-indent:25px">電子產(chǎn)品都是通過(guò)在PCB板上加上各種電容、電阻等電子元器件，從而實(shí)現(xiàn)不同使用功能的，而這些元件要能穩(wěn)固的裝在PCB上，就需要各種不同的SMT貼片加工工藝來(lái)進(jìn)行加工組裝。SMT貼片加工是一種將無(wú)引腳或短引線表面組裝元器件，簡(jiǎn)稱(chēng)SMC或SMD，中文稱(chēng)片狀元器件，安裝在印制電路板的表面或其它基板的表面上，通過(guò)再流焊或浸焊等方法加以焊接組裝的電路裝連技術(shù)。SMT基本工藝構(gòu)成要素有：錫膏印刷--> 零件貼裝-->回流焊接-->AOI光學(xué)檢測(cè)--> 維修--> 分板。SMT貼片加工的優(yōu)點(diǎn)：實(shí)現(xiàn)了電子產(chǎn)品組裝的高密度、高可靠、小型化、低成本，以及生產(chǎn)的自動(dòng)化。上海中小批量smt貼片加工</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2541402.html</p></div></div></div></div></div><div id="j8dprya" class="page-right twoColRt"><div id="8axzgnp" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nsurykm" 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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