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class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275546289062/980359.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="eop2bb8" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275546289062/980359.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="b2ohyve" 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>江蘇THW焊條工廠</p><p><span>***更新：</span>2020-06-23 13:23:23</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="83tfrde" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">簡(jiǎn)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(hào)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="wsz2zlm" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="aolcoam" class="box"><p><p> 一般直徑：）常見(jiàn)的埋弧堆焊藥芯焊絲有：LM001、LM414、LM414N、LM430、LM462、LM491、LM504、LM509、LM535、LM551，江蘇THW焊條工廠、LM552等（一般直徑：）一、常用一般焊絲1、DY-YJ502（Q）鈦型渣系的藥芯焊絲。工藝、力學(xué)性能優(yōu)良，能夠進(jìn)行全位置焊接，特別是優(yōu)良的低溫韌性，以達(dá)到船級(jí)社3y級(jí)認(rèn)證。***用于造船、鋼結(jié)構(gòu)、橋梁等。2、DY-YJ507（Q）堿型渣系的藥芯焊絲。力學(xué)性能優(yōu)良，擴(kuò)散氫含量低，具有優(yōu)良的低溫抗裂性能。-40度沖擊功可達(dá)到80以上。用于機(jī)械制造、水電、石油化工設(shè)備等。3、DY-YJ607（Q）堿型渣系的藥芯焊絲。力學(xué)性能優(yōu)良，擴(kuò)散氫含量低，適用于60公斤級(jí)**高韌性鋼的焊接。4、YJ502CrNiCu（Q）鈦型全位置焊接藥芯焊絲。用于耐大氣腐蝕鋼的焊接。如海洋平臺(tái)的焊接用，江蘇THW焊條工廠。5、YJ502Ni（Q）鈦型全位置焊接藥芯焊絲。低溫沖擊吸收功高，滿足-40度氣溫下金屬結(jié)構(gòu)的使用。二、耐熱鋼系列藥芯焊絲1、DY-YR302（Q）鈦型渣系的藥芯焊絲，適用于，***用于鍋爐壓力容器行業(yè)。2、DY-YR312，江蘇THW焊條工廠。Q）適用于12CrMoV珠光體耐熱鋼的焊接，***用于鍋爐壓力容器行業(yè)。3、DY-YR317（Q）堿性渣系藥芯焊絲。適用于12CrMoV珠光體耐熱鋼的焊接，具有優(yōu)良的低溫沖擊性能。4、DY-YR402。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇THW焊條工廠" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275546289062/980359.png"></div><p> 如果持續(xù)時(shí)間過(guò)長(zhǎng)，就會(huì)出現(xiàn)焊絲嚴(yán)重發(fā)紅，焊點(diǎn)發(fā)黑現(xiàn)象。就算能焊，焊補(bǔ)的時(shí)候，容易出現(xiàn)氧化，掉渣，焊不高等現(xiàn)象.，并且影響其后續(xù)加工。焊絲CO2焊編輯二氧化碳?xì)怏w保護(hù)電弧焊（簡(jiǎn)稱(chēng)CO2焊）的保護(hù)氣體是二氧化碳（有時(shí)采用CO2+O2的混合氣體）。由于二氧化碳?xì)怏w的0熱物理性能的特殊影響，使用常規(guī)焊接電源時(shí)，焊絲端頭熔化金屬不可能形成平衡的軸向自由過(guò)渡，通常需要采用短路和熔滴縮頸爆斷、因此，與MIG焊自由過(guò)渡相比，飛濺較多。但如采用質(zhì)量焊機(jī)，參數(shù)選擇合適，可以得到很穩(wěn)定的焊接過(guò)程，使飛濺降低到**小的程度。由于所用保護(hù)氣體價(jià)格低廉，采用短路過(guò)渡時(shí)焊縫成形良好，加上使用含脫氧劑的焊絲即可獲得無(wú)內(nèi)部缺點(diǎn)的高質(zhì)量焊接接頭。因此這種焊接方法目前已成為黑色金屬材料**重要焊接方法之一。CO2立焊雙面成形焊絲型號(hào)編輯常用的焊絲型號(hào)：常見(jiàn)的氣體保護(hù)藥芯焊絲有：LQ122、LQ172、LQ212、LQ337、LQ423、LQ439、LQ451、LQ537、LQ582、LQ585、LQ605、LQ621、LQ666、LQ707等。一般直徑）常見(jiàn)的自保護(hù)藥芯焊絲有：LZ409、LZ410、LZ411、LZ414N、LZ430、LZ570、LZ590、LZ601、LZ603、LZ606、LZ632、LZ641、LZ642、LZ643、LZ650等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江蘇THW焊條工廠" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275545937500/9427988.png"></div><p> 可以發(fā)現(xiàn)在電弧電壓為21～26V范圍內(nèi)，基本上隨著焊接電壓的增大，其短路周期的變異系數(shù)也在增大，說(shuō)明該種焊絲隨著焊接電壓的增大，焊接過(guò)程的穩(wěn)定性變差，據(jù)此可以認(rèn)為當(dāng)焊接電壓為21V時(shí)，焊接過(guò)程**為穩(wěn)定。進(jìn)而在21V/190A焊接條件下，對(duì)高氮鋼藥芯焊絲進(jìn)行進(jìn)一步的工藝評(píng)價(jià)。在焊接參數(shù)適當(dāng)?shù)那闆r下，E2507N焊絲短路周期變異系數(shù)比較小，工藝穩(wěn)定性較好,見(jiàn)表3。圖1不同焊接電壓下的焊接電流電壓信號(hào)波形圖圖2短路周期及其變異系數(shù)隨焊接電壓變化規(guī)律焊接飛濺分析為考察E2507N焊接飛濺情況，特意選取飛濺率更大的焊接規(guī)范，焊接電壓和電流分別是28V/220A，在100.%CO2保護(hù)氣氛下進(jìn)行試驗(yàn)。圖3為熔滴過(guò)渡過(guò)程的高速攝像照片，可以看出E2507N焊絲即使在純CO2氣體保護(hù)下，熔滴過(guò)渡頻率仍然很高，到120滴/秒，飛濺顆粒細(xì)小、頻率較低，說(shuō)明這種焊絲工藝性?xún)?yōu)良。分析飛濺出現(xiàn)的原因，是由于CO2在電弧作用下分解產(chǎn)生氧原子[6]，具有較強(qiáng)氧化性，焊接時(shí)液體金屬和氧原子作用極為強(qiáng)烈產(chǎn)生FeO，F(xiàn)eO進(jìn)一步和熔滴及熔池中的C原子反應(yīng)，產(chǎn)生CO，電弧高溫使得熔滴和熔池表面CO氣體體積急劇膨脹而發(fā)生劇烈而導(dǎo)致飛濺產(chǎn)生。對(duì)該焊絲的飛濺率進(jìn)行測(cè)量。</p></p><br /><p>文章來(lái)源地址: 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