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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="peov3np" class="twoCol"><div id="tdfhegx" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_wjgj/">五金、工具</a>?<a href="http://www.cdcfah.com/cp/second-wjgj_hjclyfjqh/">焊接材料與附件</a>?<a href="http://www.cdcfah.com/cp/third-hjclyfjqh_hansi/">焊絲</a>?昆山特種焊絲廠歡迎來電簡敏精密五金制造供應(yīng)</p><div id="e3ol7ta" class="leftbox clearfix"><h1>昆山特種焊絲廠歡迎來電簡敏精密五金制造供應(yīng)</h1><div id="ujl7heg" class="proBig"><div id="hwyvx8i" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/3318362.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3frjbyf" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/3318362.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="dspr2c3" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>昆山特種焊絲廠</p><p><span>***更新：</span>2020-06-08 00:26:54</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="srog3hg" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">簡敏精密五金制造(上海)有限公司</a></p><p><span>聯(lián)系人：</span>龔先生</p><p><span>郵箱: </span></p><p><span>電話: </span>13818473006</p><p><span>傳真: </span>021_69726282</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-69726282</p><p><span>地址: </span>顧北東路365號C區(qū)1101</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="7zbi3ah" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="jdfh2u8" class="box"><p><p> 注：1、直徑不大于、E5015、E5016和E5018型焊條及直徑不大于，可適用于立焊和仰焊。2、E4322型焊條適宜單道焊。焊條型號舉例如下：例14、焊條的選用（1）結(jié)構(gòu)鋼（低碳鋼、中碳鋼、普通低合金鋼）焊條的選用采用結(jié)構(gòu)鋼制造的焊接結(jié)構(gòu)，大多要求焊縫金屬與母材等強(qiáng)度，此時(shí)可按結(jié)構(gòu)鋼的強(qiáng)度選擇相應(yīng)強(qiáng)度等級的焊條，昆山特種焊絲廠。選擇時(shí)應(yīng)注意以下兩點(diǎn)：1）鋼材的強(qiáng)度等級是按屈服點(diǎn)劃分的，而結(jié)構(gòu)鋼焊條的強(qiáng)度等級系指其抗拉強(qiáng)度的比較低保證值，兩者是不一致的。通常應(yīng)選擇抗拉強(qiáng)度保證值與母材相同或稍高的焊條。2）焊縫強(qiáng)度不是比母材高出愈多愈好，昆山特種焊絲廠，而應(yīng)等于或稍高于母材。如果焊縫強(qiáng)度過高，往往使焊縫的塑性下降，反而有害。當(dāng)焊接接頭不要求焊縫與其等強(qiáng)度時(shí)，可選用抗拉強(qiáng)度較低的焊條。（2）合金結(jié)構(gòu)鋼焊條的選用合金結(jié)構(gòu)鋼焊接時(shí)，通常均不要求焊縫金屬的合金成分與該鋼種的合金成分相同或相近，昆山特種焊絲廠，而主要考慮等強(qiáng)度。但如果母材是耐熱鋼、耐腐蝕鋼時(shí)，從保證焊接接頭的耐熱、耐腐蝕性能出發(fā)，則要求焊縫金屬的主要合金成分與母材相同或相近。此時(shí)，應(yīng)根據(jù)母材的化學(xué)成分選用焊條。（3）根據(jù)母材抗裂性要求選用焊條母材成分中，如果含C或S、P等雜質(zhì)較高時(shí)，很容易在焊縫中形成裂紋。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆山特種焊絲廠" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/3318362.png"></div><p> 黃銅焊接黃銅焊接是修鋪、加工銅材時(shí)候必不可少的加工技術(shù)。焊接，也叫作熔接、镕接，是一種常見的以加熱方式接合金屬或其他熱塑性材料如塑料的制造工藝及技術(shù)。下面將介紹黃銅的焊接性和黃銅焊接方法。黃銅焊接性黃銅是銅鋅合金，由于鋅的沸點(diǎn)較低，*為907℃，故焊接過程中極容易蒸發(fā)，這一點(diǎn)成為黃銅焊接的比較大問題。在焊接高溫作用下，焊條電弧焊時(shí)鋅的蒸發(fā)量高達(dá)40%，鋅的大量蒸發(fā)，導(dǎo)致焊接接頭的力學(xué)性能和耐蝕性能下降，還使之對應(yīng)力腐蝕的敏感性增大。蒸發(fā)的鋅在空氣中立即被氧化成氧化鋅，形成白色的煙霧，給操作帶來很大困難，而且影響焊工身體健康，因此，焊接黃銅的場所，應(yīng)加強(qiáng)通風(fēng)等防護(hù)措施。黃銅的焊接性不良，焊接時(shí)會產(chǎn)生氣孔、裂紋、鋅的蒸發(fā)和氧化等問題。為了解決這些問題，在焊接時(shí)常用含硅的焊絲，因?yàn)楣柙谌鄢乇砻鏁纬梢粚又旅艿难趸璞∧?，阻礙鋅的蒸發(fā)和氧化，并防止氫的入侵。焊后可經(jīng)470～560℃的退火處理，以消除應(yīng)力防止“自裂”現(xiàn)象。黃銅焊接的方法：氣焊、碳弧焊、焊條電弧焊和氬弧焊。1．黃銅的氣焊（1）焊絲和焊粉：焊絲采用絲221、絲224。這些焊絲中的硅、錫、鐵元素既是脫氧劑，防止焊縫產(chǎn)生氣孔，又能防止和減少鋅的蒸發(fā)和燒損。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆山特種焊絲廠" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669218750/3372736.png"></div><p> 不*能有效地保證焊縫的內(nèi)在質(zhì)量，而且可為蓋面層的焊接打好基礎(chǔ)。蓋面層的焊接蓋面層的焊接關(guān)系到試板焊縫的正面成形。焊縫余高、余高差、寬度、寬度差等項(xiàng)目都有具體要求，焊工一定要保持冷靜的心態(tài)，充分發(fā)揮技術(shù)水平，使正面焊縫高低平整，寬窄一致。蓋面層焊接時(shí)難度比較大的是控制咬邊量，多數(shù)選手因咬邊量超差嚴(yán)重而影響成績。該文章講述了焊條電弧焊仰焊試板的焊接.4、易產(chǎn)生的缺點(diǎn)及克服方法氣孔氣孔是**易產(chǎn)生的缺點(diǎn)，一旦出現(xiàn)表面氣孔，裁判會將試板判0分處***孔產(chǎn)生的原因是焊接過程中產(chǎn)生的氣體及熔池周圍的氣體被液態(tài)金屬吸收后，在凝固過程中溶解度急劇下降，氣體將會板出形成氣泡，上浮過程中如來不及逸出而殘留在焊縫金屬中就形成氣孔。防止產(chǎn)生氣孔的途徑：一是采用短弧施焊，防止有害氣體侵入熔池，以有效地保護(hù)熔池，另外可以縮短熔滴過渡的路程，減小其吸收氣體的可能性；二是選擇合理的工藝參數(shù)，在填充層和蓋面層焊接時(shí)焊接電源不可過大，因?yàn)楹附与娏髟龃髸r(shí)，會促進(jìn)熔滴細(xì)化，吸收氣體量也會增加，產(chǎn)生氣孔的可能性會隨之增大；三是試板坡口兩側(cè)及層間的鐵銹及污物應(yīng)盡量***徹底，以減少產(chǎn)生氣孔的根源。夾渣在施焊過程中。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆山特種焊絲廠" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/3318362.png"></div></p><br /><p>文章來源地址: 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