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class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275830078/3192344.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="o3dvshe" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275830078/3192344.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="jtvs7eg" 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>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>江蘇助焊劑特性,助焊劑</p><p><span>***更新：</span>2020-09-18 20:25:45</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="33izwvb" 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(jī): </span>0571-88117763</p><p><span>地址: </span>順風(fēng)路528號(hào)2號(hào)樓南樓東向3層</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="oikr883" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="m3gtv8f" class="box"><p><p style="text-indent:25px">【正盟環(huán)?！砍Ｓ玫暮噶?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(diǎn)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(shí)降低熔點(diǎn)，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(diǎn)為327℃，江蘇助焊劑特性。但是鉛，是一種不錯(cuò)的錫焊料添加料，當(dāng)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(diǎn)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(jià)格低、導(dǎo)電性好、焊點(diǎn)可靠，江蘇助焊劑特性，江蘇助焊劑特性。杭州正盟環(huán)保，專業(yè)生產(chǎn)***，環(huán)保級(jí)助焊劑。江蘇助焊劑特性</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇助焊劑特性,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275830078/3192344.jpg"></div><p style="text-indent:25px">【正盟環(huán)保】松香和焊錫膏兩者有何分別？無機(jī)助焊劑一般是某些酸或者鹽，比如正磷酸H3PO4，有機(jī)助焊劑主要是某些有機(jī)酸或者有機(jī)鹵素；相對(duì)來說，無機(jī)助焊劑活性相當(dāng)強(qiáng)，去除氧化膜效果較好，但腐蝕性也強(qiáng)，很容易傷及金屬及焊點(diǎn)，一般不能在焊接電子產(chǎn)品中運(yùn)用。焊錫膏就是用機(jī)油乳化后的無機(jī)焊劑，焊接后可用溶劑清洗，不過電路板的有些部位是很難清洗的，所以一般不推薦運(yùn)用焊錫膏。有機(jī)助焊劑活性僅次于無機(jī)助焊劑，也有一定的腐蝕性，且殘?jiān)灰浊逑?，揮發(fā)物對(duì)人體有害。松香的主要成份是松香酸和海松酸，一般成中性，液態(tài)松香有一定活性，呈現(xiàn)較弱的酸性，能與金屬表面氧化物發(fā)生反應(yīng)，生成松香酸銅等化合物，并懸浮在焊錫表面，且運(yùn)用的時(shí)候無腐蝕，絕緣性強(qiáng)。一般說來，松香是常用的助焊劑。珠海助焊劑檢測(cè)買助焊劑，找杭州正盟環(huán)保工程有限公司！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇助焊劑特性,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520275751953/4246134.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！恐竸└鞒煞值淖饔弥袡C(jī)鹵化物如羧酸鹵化物、有機(jī)胺的氫鹵酸鹽。張銀雪[4]以溴化水楊酸為活化劑，它在釬焊溫度時(shí)，可熱分解出溴化氫和水楊酸溶解基體金屬表面的氧化物；并且水楊酸的羥基、羧基在釬焊時(shí)可與JH樹脂反應(yīng)交聯(lián)成高分子樹脂膜，覆蓋在焊點(diǎn)表面。有機(jī)胺的氫鹵酸鹽如鹽酸苯胺，在焊接時(shí)，熔融的助焊劑與基板的銅進(jìn)行反應(yīng)，并產(chǎn)生CuC1 2 和銅絡(luò)合物。結(jié)果生成的銅化合物主要與熔融的焊料中的錫產(chǎn)生反應(yīng)生成了金屬銅，這些銅立即熔解到焊料之中，通過這些反應(yīng)和銅在焊料中的熔解，使焊料在銅板上流布。反應(yīng)如下[5]： Cu＋2C 6 H5NH2?HCl→CuCl2＋2 C6H5NH2＋H2 CuCl2＋2C6H5NH2?HCl→Cu[C6H5NH3]2Cl4</p><p style="text-indent:25px">【正盟環(huán)?！恐竸┚邆湫阅?⑴助焊劑應(yīng)有適當(dāng)?shù)幕钚詼囟确秶Ｔ诤噶先刍伴_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(diǎn)應(yīng)低于焊料的熔點(diǎn)，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(jìn)焊料對(duì)母材的潤(rùn)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。助焊劑，杭州正盟環(huán)保生產(chǎn)國標(biāo)環(huán)保助焊劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇助焊劑特性,助焊劑" src="https://tyunfile.71360.com/UploadFile/zhengmenghuanbao1/637334520274472656/4640738.jpg"></div><p style="text-indent:25px">【正盟環(huán)?！侩娮庸I(yè)助焊劑之如何從技術(shù)性能指標(biāo)的角度選擇助焊劑？(一) 助焊劑是電子工業(yè)中相當(dāng)重要的輔助材料之一，它在電子裝配工藝中影響電子產(chǎn)品質(zhì)量與可靠性。隨著現(xiàn)代信息電子工業(yè)的迅猛發(fā)展，助焊劑的使用量大要求越來越高。如何能在眾多的助焊劑中挑選一款適合自己所需要的產(chǎn)品，滿足波峰焊工藝使用，從技術(shù)性能指標(biāo)的角度可供初步參考篩選?到適合的產(chǎn)品，首先需要正確理解其各項(xiàng)技術(shù)性能指標(biāo)： PH值：助焊劑去除焊接金屬表面的金屬氧化物通過酸性反應(yīng)，酸性越強(qiáng)PH值越低，助焊劑的去氧化能力則越強(qiáng)，但同時(shí)帶來的過反應(yīng)的問題而把金屬基材腐蝕。故助焊劑酸性的大小應(yīng)與金屬材料敏感性相匹配，精密焊接不宜選擇酸性太強(qiáng)的助焊劑，或者焊后需要進(jìn)行清洗?，F(xiàn)貨批發(fā)助焊劑，量大從優(yōu)。舟山錫助焊劑</p><p style="text-indent:25px">正盟環(huán)保助焊劑，您值得擁有！江蘇助焊劑特性</p><p style="text-indent:25px">【正盟環(huán)?！恐竸┑姆N類很多，大體上可分為有機(jī)、無機(jī)和樹脂三大系列。 1、無機(jī)：無機(jī)系列助焊劑的化學(xué)作用強(qiáng)，助焊性能非常好，但腐蝕作用大，屬于酸性焊劑。由于它溶解于水，所以又稱為水溶性助焊劑，它包括無機(jī)酸和無機(jī)鹽兩種。含有無機(jī)酸的助焊劑的主要成分是鹽酸、氫氟酸等，含有無機(jī)鹽的助焊劑的主要成分是氯化鋅、氯化銨等，它們使用后必須立即進(jìn)行非常嚴(yán)格的清洗，因?yàn)槿魏螝埩粼诒缓讣系柠u化物都會(huì)引起嚴(yán)重的腐蝕。無機(jī)系列助焊劑通常只用于非電子產(chǎn)品的焊接，在電子設(shè)備的裝聯(lián)中嚴(yán)禁使用這類無機(jī)系列的助焊劑。江蘇助焊劑特性</p><p style="text-indent:25px">杭州正盟環(huán)保工程有限公司位于順風(fēng)路528號(hào)2號(hào)樓南樓東向3層。公司業(yè)務(wù)分為助焊劑，錫絲，錫條，錫膏等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司秉持誠信為本的經(jīng)營(yíng)理念，在環(huán)保深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，打造環(huán)保良好品牌。正盟環(huán)保憑借創(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(yù)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/1332649.html</p></div></div></div></div></div><div id="bqikwln" class="page-right twoColRt"><div id="3oqnz2w" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pjlik4a" class="recomPic likePro"><a 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