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src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258778203125/6865220.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7elxn2y" 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>北京smt電子加工,SMT貼片</p><p><span>***更新：</span>2020-08-31 09:14:47</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="xqskbsk" 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: </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="nrj32f7" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="zyacne3" class="box"><p><p style="text-indent:25px">SMT貼片加工焊接后的清洗對于高要求的精密儀表等特殊要求的產(chǎn)品需要做三防處理，三防處理前要求有很高的清潔度，北京smt電子加工，否則在潮熱或高溫等惡劣環(huán)境條件下會造成電性能下降或失效等嚴(yán)重后果。由于焊后殘留物的速擋，造成在線測或功能測時測試探針接觸不良，容易出現(xiàn)誤測對于高要求的產(chǎn)品，由于焊后殘留物的遮擋，使一些熱損傷、層裂等缺陷不能暴露出來，造成漏檢而影響可靠性。同時，北京smt電子加工，北京smt電子加工，殘渣多也影響基板的外觀和板卡的商品性。焊后殘留物會影響高密度、多I/O連接點陣列芯片、倒裝芯片的連接可靠性。SMT貼片加工可靠性高、抗振能力強。北京smt電子加工</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京smt電子加工,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，而且很多的物料因為跟貼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。北京smt貼片質(zhì)量要求由于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="北京smt電子加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258632216797/5876714.png"></div><p style="text-indent:25px">SMT貼片加工的優(yōu)點: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。焊點缺陷率低，高頻特性好，減少了電磁和射頻干擾。易于實現(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。正是由于SMT貼片加工的工藝流程的復(fù)雜，所以出現(xiàn)了很多的SMT貼片加工的工廠，專業(yè)做SMT貼片的加工，得益于電子行業(yè)的蓬勃發(fā)展，SMT貼片加工成就了一個行業(yè)的繁榮。</p><p style="text-indent:25px">SMT貼片生產(chǎn)文件的準(zhǔn)備：生產(chǎn)前必須將設(shè)計文件提供的產(chǎn)品設(shè)計技術(shù)文件，通過相應(yīng)方法轉(zhuǎn)換成生產(chǎn)過程中所需要的物料管理文件、工藝文件、生產(chǎn)文件、檢驗文件和其他文件 SMT生產(chǎn)設(shè)備的準(zhǔn)備：生產(chǎn)設(shè)備是將不同品種和數(shù)量的物料通過一定的方式對物料進(jìn)行裝聯(lián)的裝置。采用SMT制造工藝的產(chǎn)品在制造過程中，都需要相應(yīng)的設(shè)備支持。如其中的涂數(shù)設(shè)備、貼裝設(shè)備、回流焊接設(shè)備、AOI檢測設(shè)備等。這些設(shè)備通過一定的組合，就能達(dá)到產(chǎn)品制造的目的。生產(chǎn)設(shè)備決定了產(chǎn)品的裝聯(lián)精度、組成、質(zhì)量、產(chǎn)量等方面的要求。所以，產(chǎn)品在制造前必須根據(jù)工藝文件，用相應(yīng)方法轉(zhuǎn)換成設(shè)備的可執(zhí)行程序和操作規(guī)程。通過對設(shè)備的調(diào)校、產(chǎn)品的試生產(chǎn)，以達(dá)到保證產(chǎn)品的生產(chǎn)和質(zhì)量的目的。同時，為了保證產(chǎn)品的可制造性、工藝要求和檢驗要求等，在制造過程中要用到多種檢測設(shè)備和工藝裝備，以達(dá)到產(chǎn)品的制造、檢驗的要求。SMT貼片機的維護和保養(yǎng)是整個PCBA制造工序中的重要事情。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京smt電子加工,SMT貼片" src="https://tyunfile.71360.com/UploadFile/haomingdianzi/637330258869951172/8176008.png"></div><p style="text-indent:25px">SMT貼片波峰焊首件焊接并檢驗： 1、用自動上板機，或人工把PCB輕輕放在傳送帶（或夾具）上，機器自動完成噴涂助焊劑、干燥、預(yù)熱、波峰焊、冷卻等操作。2、在波峰焊出口處接住PCB。3、按照行業(yè)標(biāo)準(zhǔn)《焊點質(zhì)量評定》SJ/T10666-1995或IPC-A-610E進(jìn)行首件焊接質(zhì)量檢驗。根據(jù)首件焊接結(jié)果調(diào)整焊接參數(shù)，直到質(zhì)量符合要求后才能進(jìn)行連續(xù)批量生產(chǎn)。PCBA首件檢驗我們之前就已經(jīng)反復(fù)強調(diào)過，其重要性不言而喻。為什么說在波峰焊后要進(jìn)行首件檢測呢？其實PCBA的主要生產(chǎn)流程包括：錫膏印刷、SMT貼片、回流焊焊接、DIP插件、波峰焊焊接。如果沒有問題的話，經(jīng)過了波峰焊焊接的電路板就可以拿回去組裝成完成品了。那么如果我們對一個已經(jīng)走完了生產(chǎn)流程的產(chǎn)品不加檢驗就去生產(chǎn)，如果出現(xiàn)品質(zhì)異常，那么已經(jīng)組裝好的產(chǎn)品也要拆下來重新返修。所以除非是客戶明確表示不用做首件檢測的情況，其余情況下，PCBA加工廠一定要在波峰焊接完成之后進(jìn)行首件檢測，經(jīng)過檢驗合格之后跟客戶確認(rèn)，下一步在進(jìn)行量產(chǎn)和批量生產(chǎn)才是一個可行的方案。SMT貼片加工中出現(xiàn)元器件移位的原因是什么？北京smt電子加工</p><p style="text-indent:25px">得益于電子行業(yè)的蓬勃發(fā)展，SMT貼片加工成就了一個行業(yè)的繁榮。北京smt電子加工</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，你們的貼片機怎么樣？是高速機還是什么機？是全自動的還是半自動的？你們的貼片機多少錢一臺？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，作為SMT貼片加工廠商，貼片機就是我們吃飯的飯碗，那么如何維護好SMT貼片機，就是我們必須要考慮的問題。那么貼片機如何維護好呢？1.機械活動模組部分。如果要是超負(fù)荷的去使用，那么就需要機器長時間的不間斷運行，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。北京smt電子加工</p><p style="text-indent:25px">中山市浩明電子科技有限公司位于廣東省中山市，創(chuàng)立于2011-11-24。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細(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。公司將不斷增強企業(yè)重點競爭力，努力學(xué)習(xí)行業(yè)先進(jìn)知識，遵守行業(yè)規(guī)范，植根于電子元器件行業(yè)的發(fā)展。浩明電子憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1104492.html</p></div></div></div></div></div><div id="pa7e8fz" 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