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id="a7ame8g" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275547109375/7215290.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mby8yso" 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>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>山東鑄鐵拉延焊條焊絲銷售</p><p><span>***更新：</span>2020-06-24 01:25:33</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="3dv2g77" 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="3xjv3t8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="wvxd7ue" class="box"><p><p> 2送絲輪壓力不夠3送絲軟管堵塞或接頭處有硬彎或不匹配4導(dǎo)電嘴孔徑太大或太小5送絲軟管彎曲半徑小于400mm1更換與焊絲直徑相匹配的送絲輪2調(diào)整壓力3清理送絲軟管或更換4更換合適孔徑的導(dǎo)電嘴5展開送絲軟管2.三相電源的相間電壓不平衡檢查輸入電壓加大供電電源容量3.電網(wǎng)電壓缺相不與其他大功率用電裝置公用同**路4.焊工操作或規(guī)范選用不當(dāng)正確施焊，重新選擇焊接規(guī)范5.連接處接觸不良檢查輸入線，空氣開關(guān)等部件6.二次側(cè)極性接反。7導(dǎo)電嘴磨損嚴(yán)重6更正接線.7。更換導(dǎo)電嘴焊接時焊機(jī)常見故障與排除方法：故障現(xiàn)象故障原因排除方法焊縫產(chǎn)生氣孔1.工件表面不清潔2.焊絲表面有油污或生銹，空氣進(jìn)入焊接區(qū)5.噴嘴上粘有飛濺物，保護(hù)氣流不暢，銹跡等2，山東鑄鐵拉延焊條焊絲銷售.***焊絲，送絲輪和軟管中的油污3，山東鑄鐵拉延焊條焊絲銷售.檢查氣瓶，氣帶，壓力表是否漏氣4，山東鑄鐵拉延焊條焊絲銷售.采取保護(hù)措施5.***噴嘴上飛濺物。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東鑄鐵拉延焊條焊絲銷售" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275547109375/7215290.png"></div><p> 具有工藝性能良好、操作方便、焊接質(zhì)量穩(wěn)定的特點。在不易進(jìn)行背面充氬保護(hù)的管道焊接作業(yè)及高空作業(yè)時其優(yōu)點更為突出，值得在火力發(fā)電廠安裝工程中推廣應(yīng)用。1、焊接材料與工藝本次試驗中母材采用1Cr18Ni9奧氏體不銹鋼，規(guī)格為Ф42mm×5mm，化學(xué)成分及力學(xué)性能見表1、表2。焊絲為昆山京群焊材科技有限公司生產(chǎn)的GTS-F308L藥芯焊絲，符合AWS-95R308LT1-5及GB/T17853-99R308LT1-5標(biāo)準(zhǔn)。焊絲規(guī)格為Ф×915mm，藥芯焊絲熔敷金屬的化學(xué)成分見表3。坡口尺寸的選擇坡口型式、對口參數(shù)及焊道設(shè)計見附圖。由于奧氏體不銹鋼的導(dǎo)熱系數(shù)小而線膨脹系數(shù)大，焊接時變形大。如果在焊接時選用的坡口較大，則將會增多填充金屬，增加焊的擺動距離，降低焊接速度，加大了變形量，增加了焊縫在高溫段的停留時間，增加了產(chǎn)生晶間腐蝕及熱裂紋的可能性，所以在保證焊縫質(zhì)量及焊工易操作的前提下，應(yīng)適當(dāng)減少坡口尺寸。經(jīng)過反復(fù)實踐，將坡口尺寸選擇為55°±5°。對口間隙也適當(dāng)增大，有利于熔渣流到焊縫根部以保護(hù)根部焊縫不受氧化。附圖坡口型式與焊道設(shè)計焊接位置為45°斜焊（6G）。打底層和該面層全部采用藥芯焊絲進(jìn)行焊接。層間溫度的控制奧氏體不銹鋼焊接中。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東鑄鐵拉延焊條焊絲銷售" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275559433594/2849051.png"></div><p> **依靠焊絲自身的合金元素及高溫時的反應(yīng)來防止空氣中氧、氮等氣體的侵入，以及調(diào)整焊縫金屬成分，這類焊絲稱為自保護(hù)藥芯焊絲，是一種很有發(fā)展前途的新型焊絲。國內(nèi)已開始生產(chǎn)，但使用尚不***。實芯焊絲實芯焊絲的分類：實芯焊絲分氣體保護(hù)焊用碳素鋼、低合金鋼焊絲（鋼絲），熔化焊用鋼絲，銅及銅合金焊絲，鋁及鋁合金焊絲，鎳及鎳合金焊絲等。氣體保護(hù)焊用焊絲（鋼絲）主要包括二氧化碳?xì)怏w保護(hù)焊、鎢極氣體保護(hù)焊和等離子弧焊的焊絲。熔化焊用鋼絲主鼕包括適用于埋弧焊和電渣焊、氣焊等用途的冷拉鋼絲。為了防止焊絲生銹，保持焊絲的光潔，焊絲表面一般都鍍有—層銅，這也是為什么焊絲表面顏色為黃紅色的原因。鍍銅焊絲不影響焊絲的使用性能。氣體保護(hù)焊焊絲：（GB/T8110—1995)本標(biāo)準(zhǔn)適用于碳素鋼、低合金鋼熔化極氣體保護(hù)焊用的實芯焊絲，推薦用于鎢極氣體保護(hù)電弧焊和等離子弧焊的填充焊絲。焊絲型號的表示方法為：ERXX-X。字母ER表示焊絲，ER后面的兩位數(shù)字表示熔敷金屬的比較低抗拉強度，短劃后面的數(shù)字或字母表示焊絲化學(xué)成分分類代號。如還附加其它化學(xué)成分時，直接用元素符號表示，并以短劃與前面數(shù)字分開。舉例如下：氣體保護(hù)焊焊絲的直徑比較小，**小為。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/368592.html</p></div></div></div></div></div><div id="gqif83g" class="page-right twoColRt"><div id="d2h2yiz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="hmjlnuw" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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