珠海生產(chǎn)助焊劑歡迎來電杭州正盟環(huán)保工程供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="【正盟環(huán)?！渴裁词敲馇逑粗竸┟馇逑词侵冈陔娮友b聯(lián)生產(chǎn)中采用低固態(tài)含量、無腐蝕性的助焊劑，在惰性氣體環(huán)境下焊接，焊后電路板上的殘留物極微、無腐蝕，且具有極高的表面絕緣電阻（SIR），一般情況下不需要清洗既能達到離子潔凈度的標準（美軍標MIL"><meta name="keywords" content="珠海生產(chǎn)助焊劑,助焊劑"><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 http-equiv="Cache-Control" content="no-transform" /> <meta 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class="proBig"><div id="xdhets7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274599609/8028515.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="juyl3s2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274599609/8028515.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kyl783q" 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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>珠海生產(chǎn)助焊劑,助焊劑</p><p><span>***更新：</span>2020-09-05 06:06:37</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="3u3wajr" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">杭州正盟環(huán)保工程有限公司</a></p><p><span>聯(lián)系人：</span>李先生</p><p><span>郵箱: </span></p><p><span>電話: </span>13771706346</p><p><span>傳真: </span>0571_</p><p><span>網(wǎng)址: </span>http://www.hzzmhbgc.com</p><p><span>手機: </span>0571-88117763</p><p><span>地址: </span>順風路528號2號樓南樓東向3層</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="77jphas" class="page-proshow02"><p class="title">詳細說明</p><div id="eadvcq8" class="box"><p><p style="text-indent:25px">【正盟環(huán)?！渴裁词敲馇逑粗竸?免清洗是指在電子裝聯(lián)生產(chǎn)中采用低固態(tài)含量、無腐蝕性的助焊劑，在惰性氣體環(huán)境下焊接，焊后電路板上的殘留物極微、無腐蝕，且具有極高的表面絕緣電阻（SIR），一般情況下不需要清洗既能達到離子潔凈度的標準（美軍標MIL-P-228809離子污染等級劃分為：一級≤1.5ugNaCl/cm2無污染；二級≤1，珠海生產(chǎn)助焊劑.5～5.0ugNACl/cm2質(zhì)量高；三級≤5.0～10.0ugNaCl/cm2符合要求；四級>10，珠海生產(chǎn)助焊劑，珠海生產(chǎn)助焊劑.0ugNaCl/cm2不干凈），可直接進入下道工序的工藝技術。必須指出的是“免清洗”與“不清洗”是不同的2個概念，所謂“不清洗”是指在電子裝聯(lián)生產(chǎn)中采用傳統(tǒng)的松香助焊劑（RMA）或有機酸助焊劑，焊接后雖然板面留有一定的殘留物，但不用清洗也能滿足某些產(chǎn)品的質(zhì)量要求，如家用電子產(chǎn)品、專業(yè)聲視設備、低成本辦公設備等產(chǎn)品，它們生產(chǎn)時通常是“不清洗”的，并不是“免清洗”。環(huán)保級助焊劑，杭州正盟環(huán)保批發(fā)生產(chǎn)。珠海生產(chǎn)助焊劑</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="珠海生產(chǎn)助焊劑,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274599609/8028515.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！恐竸┚邆湫阅?⑴助焊劑應有適當?shù)幕钚詼囟确秶?。在焊料熔化前開始起作用，在施焊過程中較好地發(fā)揮去除氧化膜、降低液態(tài)焊料表面張力的作用。焊劑的熔點應低于焊料的熔點，但不易相差過大。 ⑵助焊劑應有良好的熱穩(wěn)定性，一般熱穩(wěn)定溫度不小于100℃。 ⑶助焊劑的密度應小于液態(tài)焊料的密度，這樣助焊劑才能均勻地在被焊金屬表面鋪展，呈薄膜狀覆蓋在焊料和被焊金屬表面，有效地隔絕空氣，促進焊料對母材的潤濕。 ⑷助焊劑的殘留物不應有腐蝕性且容易清洗；不應析出有毒、有害氣體；要有符合電子工業(yè)規(guī)定的水溶性電阻和絕緣電阻；不吸潮，不產(chǎn)生霉菌；化學性能穩(wěn)定，易于貯藏珠海生產(chǎn)助焊劑廠家直銷國標級助焊劑批發(fā)價銷售價格合理，歡迎選購。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="珠海生產(chǎn)助焊劑,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275439453/9758486.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！磕壳皣鴥?nèi)常用的可靠性評價試驗主要為：表面絕緣阻抗測試，其次銅鏡腐蝕測試、離子濃度測試、軟釬焊性試驗等。表面絕緣阻抗測試試驗時用規(guī)定的材質(zhì)的梳型電極或環(huán)型電極，均勻地涂覆定量的焊劑，在約85℃的溫度下干燥30 min作為試片。先在常態(tài)下測定上述試片的絕緣電阻，然后將試片置于溫度為(40±2)℃，濕度約90%的恒溫恒濕箱中，保持96 h后取出，再放人用在(20±2)℃溫度下的特級酒石酸鈉的飽和溶液調(diào)節(jié)濕度(90%)的干燥器中，在1 h內(nèi)取出，然后在標準狀態(tài)下，使用絕緣電阻測定器測定表面絕緣電阻。表面絕緣電阻值大于108Ω才算符合可靠性要求。國外對于免清洗助焊劑的表面絕緣電阻要求較高，一般要求做加偏置電壓、長時間潮熱試驗。觀察焊后焊劑殘留物對表面絕緣電阻的時效影響，以此來衡量免清洗助焊劑的可靠性。</p><p style="text-indent:25px">【正盟環(huán)?！俊局竸┬≈R】助焊劑各成分的作用被焊金屬工件表面存在氧化物、灰塵等污垢，阻礙工件基體金屬和焊料之間以原子狀態(tài)相互擴散，因此必須去除氧化物等以使表面清潔露出金屬基體，但是被清潔的金屬基體表面的原子在大氣中又立刻被氧化，在焊接溫度下，氧化速度更快。所以在焊接過程中加入助焊劑，用來協(xié)助提供沒有氧化層的金屬表面，并保持這些表面的無氧化物狀態(tài)，直到焊錫與金屬表面完成焊接過程。同時依靠焊劑的化學作用，與被焊金屬表面的氧化物化合，在焊接溫度下形成液態(tài)化合物，使被焊金屬部位表面的金屬原子與熔融焊料的原子相互擴散，以達到錫焊連接的目的。在焊接過程中助焊劑還能促進焊錫的流動和擴散，通過減小表面不平度來影響焊錫表面張力在焊錫擴散方向上的平衡。理想的助焊劑除化學活性外，還要具有良好的熱穩(wěn)定性、粘附力、擴展力、電解活性、環(huán)境穩(wěn)定性、化學官能團及其反應特性、流變特性、對通用清洗溶液和設備的適應性等。助焊劑的上述作用都是通過其中的活化劑、溶劑、表面活性劑等成分的作用來實現(xiàn)的。正盟環(huán)保生產(chǎn)環(huán)保助焊劑，品質(zhì)可靠，可加工。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="珠海生產(chǎn)助焊劑,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274609375/2746468.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！恐竸┌垂δ芊诸愑校菏纸钢竸⒉ǚ搴钢竸┘安讳P鋼助焊劑；前面兩者為廣大用戶所熟悉了解，這里解釋不銹鋼助焊劑,它是專門針對不銹鋼而焊接的一種化學藥劑，一般的焊接只能完成對銅或錫表面的焊接，但不銹鋼助焊劑可以完成對銅、鐵、鍍鋅板、鍍鎳、各類不銹鋼等的焊接；助焊劑的種類很多，大體上可分為有機、無機和樹脂三大系列。【正盟環(huán)?！恐竸┚邆錀l件 ⑴熔點應低于焊料。 ⑵表面的張力、黏度、密度要小于焊料。 ⑶不能腐蝕母材，在焊接溫度下，應能增加焊料的流動性，去除金屬表面氧化膜。 ⑷焊劑殘渣容易去除。 ⑸不會產(chǎn)生有毒氣體和臭味，以防對人體的危害和污染環(huán)境。助焊劑廠家直供，一手貨源！嘉興助焊劑膏</p><p style="text-indent:25px">杭州正盟環(huán)保，生產(chǎn)質(zhì)量環(huán)保，環(huán)保級助焊劑。珠海生產(chǎn)助焊劑</p><p style="text-indent:25px">【正盟環(huán)保】電烙鐵焊接過程中，如何選擇助焊劑？焊錫材料是電子行業(yè)的生產(chǎn)與維修工作中必不可少的，在電烙鐵的使用過程中，我們經(jīng)常會用到。焊錫膏---膏狀粘稠體，主要成分金屬粉末、松香、有機酸、觸變劑、活性劑。用于SMT自動貼裝工藝的焊接。助焊劑是統(tǒng)稱，松香、焊錫膏都屬于助焊劑，關鍵的用途是增加焊接時焊料與被焊物體的浸潤效果(浸潤不佳的話,焊錫不能很好的附著在被焊物體上，出現(xiàn)圓圓的球狀,很容易虛焊)。其他還有比如去除氧化、輔助熱傳導、降低金屬表面張力、使焊點美觀等等。助焊劑分成三大類：一是無機助焊劑，二是有機助焊劑，三是松香。珠海生產(chǎn)助焊劑</p><p style="text-indent:25px">杭州正盟環(huán)保工程有限公司致力于環(huán)保，是一家生產(chǎn)型的公司。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下助焊劑，錫絲，錫條，錫膏深受客戶的喜愛。公司從事環(huán)保多年，有著創(chuàng)新的設計、強大的技術，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務。正盟環(huán)保秉承“客戶為尊、服務為榮、創(chuàng)意為先、技術為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1162053.html</p></div></div></div></div></div><div id="u8iwdcg" class="page-right 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