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id="nf3efgh" class="proBig"><div id="dl8w8oe" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275449218/8342179.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2hitkqm" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275449218/8342179.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="u3yhn2a" 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(guān)鍵詞：</span>溫州鋁錫助焊劑,助焊劑</p><p><span>***更新：</span>2020-09-05 20:13:43</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="vyr7l7k" 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="jbxo88e" class="page-proshow02"><p class="title">詳細說明</p><div id="2eaqhkv" class="box"><p><p style="text-indent:25px">【正盟環(huán)?！棵馇逑粗竸?③可焊性：擴展率≥80% 可焊性與腐蝕性是相互矛盾的一對指標，為了使助焊劑具有一定的消除氧化物的能力，并且在預(yù)熱和焊接的整個過程中均能保持一定程度的活性，就必須包含某種酸。在免清洗助焊劑中用得多的是非水溶性醋酸系列，配方中可能還有胺、氨和合成樹脂，溫州鋁錫助焊劑，溫州鋁錫助焊劑，不同的配方會影響其活性和可靠性。不同的企業(yè)有不同的要求和內(nèi)部控制指標，但必須符合焊接質(zhì)量高和無腐蝕性的使用要求。助焊劑的活性通常是用pH值來衡量的，溫州鋁錫助焊劑，免清洗助焊劑的pH值應(yīng)控制在產(chǎn)品規(guī)定的技術(shù)條件范圍內(nèi)（各生產(chǎn)廠家的pH值略有不同）。 ④符合環(huán)保要求：無毒，無強烈刺激性氣味，基本不污染環(huán)境，操作安全。熱誠歡迎各界朋友前來參觀、考察、治談業(yè)務(wù)。溫州鋁錫助焊劑</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州鋁錫助焊劑,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275449218/8342179.jpg"></div><p style="text-indent:25px">【正盟環(huán)保】【助焊劑小知識】助焊劑在PCB行業(yè)中應(yīng)用極廣，其品質(zhì)直接影響電子工業(yè)的整個生產(chǎn)過程和產(chǎn)品質(zhì)量。隨著RoHS 和WEEE指令的實行，無鉛化對助焊劑的性能提出了更高的要求，助焊劑已由傳統(tǒng)的松香型向無鹵、無松香、免清洗、低固含量方向發(fā)展，其組成也隨之發(fā)生了相應(yīng)的變化，各組分的相互作用，使助焊劑的性能更加優(yōu)良。 1、助焊劑的基本組成國內(nèi)外助焊劑一般由活化劑、溶劑、表面活性劑和特殊成分組成。特殊成分包括緩蝕劑、防氧化劑、成膜劑等。廣東助焊劑參數(shù)正盟牌助焊劑你值得擁有！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="溫州鋁錫助焊劑,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274921875/6047117.jpg"></div><p style="text-indent:25px">【正盟環(huán)保】助焊劑具備性能 ⑴助焊劑應(yīng)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(yīng)低于焊料的熔點，但不易相差過大。 ⑵助焊劑應(yīng)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(yīng)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(yīng)有腐蝕性且容易清洗；不應(yīng)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(xué)性能穩(wěn)定，易于貯藏</p><p style="text-indent:25px">【正盟環(huán)保】常用的焊料錫（Sn），是銀白色、有光澤、有延展性、呈脆性、在空氣中不易氧化的金屬，熔點為232℃。由于純錫，呈脆性，并且能與大多數(shù)金屬熔融形成合金，因此為了讓以錫為主的焊料具有韌性，同時降低熔點，必須與另外一種金屬熔融，以改善錫焊料的焊接性能。鉛（Pb），是青灰色、質(zhì)軟、密度大、有延展性、有毒性、在空氣中易氧化的金屬，熔點為327℃。但是鉛，是一種不錯的錫焊料添加料，當與錫按比例熔融混合后，就得到常用的‘含鉛焊錫料’。這種‘含鉛錫焊料’，熔點變低，利于低溫焊接，能容易與大多數(shù)金屬結(jié)合（即：容易上焊料），并且價格低、導(dǎo)電性好、焊點可靠。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="溫州鋁錫助焊劑,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275830078/3192344.jpg"></div><p style="text-indent:25px">【正盟環(huán)保】助焊劑具備性能 ⑴助焊劑應(yīng)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(yīng)低于焊料的熔點，但不易相差過大。 ⑵助焊劑應(yīng)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(yīng)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(yīng)有腐蝕性且容易清洗；不應(yīng)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(xué)性能穩(wěn)定，易于貯藏。正盟環(huán)保供應(yīng)環(huán)保級助焊劑，水基環(huán)保免清洗焊劑。珠海金屬助焊劑</p><p style="text-indent:25px">廠家成本價銷售出廠價批發(fā)環(huán)保助焊劑。溫州鋁錫助焊劑</p><p style="text-indent:25px">【正盟環(huán)?！恐竸┏煞?近幾十年來，在電子產(chǎn)品生產(chǎn)錫焊工藝過程中，一般多使用主要由松香、樹脂、含鹵化物的活性劑、添加劑和有機溶劑組成的松香樹脂系助焊劑.這類助焊劑雖然可焊性好，成本低，但焊后殘留物高.其殘留物含有鹵素離子，會逐步引起電氣絕緣性能下降和短路等問題，要解決這一問題，必須對電子印制板上的松香樹脂系助焊劑殘留物進行清洗.這樣不但會增加生產(chǎn)成本，而且清洗松香樹脂系助焊劑殘留的清洗劑主要是氟氯化合物.這種化合物是大氣臭氧層的損耗物質(zhì)，屬于禁用和被淘汰之列.仍有不少公司沿用的工藝是屬于前述采用松香樹指系助焊劑焊錫再用清洗劑清洗的工藝，效率較低而成本偏高。溫州鋁錫助焊劑</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。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造環(huán)保良好品牌。正盟環(huán)保立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1170357.html</p></div></div></div></div></div><div id="vfpghxy" class="page-right twoColRt"><div 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