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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563994140/7040916.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="irtvn2y" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563994140/7040916.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="d6mokmt" 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>湖南特種焊條焊絲供應(yīng)商,焊條焊絲</p><p><span>***更新：</span>2020-08-12 02:11:49</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="zy3ov3b" 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="3qnkbn8" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="7jvnpbs" class="box"><p><p> 藥芯焊絲焊接時(shí)比CO2實(shí)芯焊絲的飛濺要小得多，下圖為藥芯焊絲與CO2實(shí)芯焊絲飛濺大小的比較。焊接質(zhì)量好一般CO2實(shí)芯焊絲只適合于低碳鋼或強(qiáng)度級(jí)別較低的低合金鋼的焊接，而藥芯焊絲則適用于各種材料的焊接，不僅包括各種結(jié)構(gòu)鋼，也包括不銹鋼等特殊材料。藥芯焊絲焊縫的低溫沖擊韌度比實(shí)芯焊絲有了很大的提高，可適用于各種重要結(jié)構(gòu)的焊接，湖南特種焊條焊絲供應(yīng)商，而CO2實(shí)芯焊絲一般只用于0度以上工作的一般鋼結(jié)構(gòu)。綜合焊接成本：低藥芯焊絲相對(duì)價(jià)格較高，但其綜合生產(chǎn)成本比焊條電弧焊要低許多，與CO2實(shí)芯焊絲大體相當(dāng)。藥芯焊絲的型號(hào)及牌號(hào)按GB10045—88規(guī)怎定，藥芯焊絲***部分以英文字母“EF”表示藥芯焊絲代號(hào)，代號(hào)后面的***位數(shù)字表示主要適用的焊接位置：“0”表示用于平焊和橫焊，湖南特種焊條焊絲供應(yīng)商，湖南特種焊條焊絲供應(yīng)商，“1”表示用于全位置焊。代號(hào)后面的第二位數(shù)字或英文字母為分類代號(hào)。第二部分在短橫線后用四位數(shù)字表示焊縫金屬的力學(xué)性能。如焊絲型號(hào)EF03-5042。實(shí)際生產(chǎn)中還經(jīng)常用牌號(hào)來(lái)表示藥芯焊絲的類型。藥芯焊絲生產(chǎn)牌號(hào)用如下符號(hào)表示：首字母“Y”表示藥芯焊絲；第二位字母表示藥芯焊絲種類，***、第二位數(shù)字表示焊絲特點(diǎn)；第三位數(shù)字表示溶渣類型（或第三位以后之?dāng)?shù)字及元素符號(hào)表示焊縫金屬化學(xué)成分）。?二氧化碳?xì)怏w保護(hù)電弧焊（簡(jiǎn)稱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）。湖南特種焊條焊絲供應(yīng)商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南特種焊條焊絲供應(yīng)商,焊條焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563994140/7040916.png"></div><p> ②MF742B堿***芯焊絲的特點(diǎn)是：粗熔滴過(guò)渡，焊道略凸，煙塵較大，熔渣由氟化物和堿土金屬氧化物組成，焊縫金屬具有較高的沖擊韌性和抗裂紋能力。MF742M金屬粉末型藥芯焊絲的特點(diǎn)是：細(xì)熔滴射流過(guò)渡，熔渣覆蓋率低，藥芯成分由金屬合金和鐵粉組成，并含有電弧增強(qiáng)劑，熔敷效率高，再引弧性好。③比較實(shí)芯焊絲和藥芯焊絲可以看出，藥芯焊絲焊縫金屬Ni的含量比實(shí)芯焊絲高，因此焊縫的塑性和韌性更好，-60℃時(shí)仍有較高的沖擊韌性。（1）焊接試板：某鋼廠生產(chǎn)的Q960E調(diào)質(zhì)鋼板，板厚20mm。其化學(xué)成分及力學(xué)性能如表7、表8所示。（2）焊接材料的選擇實(shí)芯焊絲：選用奧林康（OERLIKON）公司的Mn4Ni2CrMo，φ（ESAB）公司的okAristRod89，φ；藥芯焊絲：選用斯泰因（STEINMEGAFIL）公司的MF745B，φ1100M，φ。（3）實(shí)芯焊絲試驗(yàn)依據(jù)ISO16834標(biāo)準(zhǔn)，并參照焊絲生產(chǎn)廠家提供的相關(guān)技術(shù)資料，進(jìn)行了焊絲的試驗(yàn)研究工作。兩種焊絲的化學(xué)成分檢測(cè)結(jié)果如表9所示。焊接工藝：預(yù)熱溫度為150℃，道間溫度為150～170℃；焊接電流為240～280A，電弧電壓為24～30V，保護(hù)氣體為80%Ar+20%CO2混合氣體保護(hù)；焊接熱輸入～。多道焊時(shí)，先焊坡口兩側(cè)的焊縫，再焊中間的焊縫。焊后用石棉布覆蓋。湖南特種焊條焊絲供應(yīng)商選擇具有熔化溫度低于母材的填充金屬，可**減小熱影響區(qū)中晶間裂紋傾向。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南特種焊條焊絲供應(yīng)商,焊條焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265684541015/1545447.png"></div><p> 在角焊等遮蔽性差的地方是2~3mm,在開槽深的地方是5~6mm,噴嘴至工作的距離一般不超過(guò)15mm。4、為防止焊接氣孔之出現(xiàn),焊接部位如有鐵銹、油污等務(wù)必清理干凈。5、焊接電弧長(zhǎng)度,焊接普通鋼時(shí),以2~4mm為佳,而焊接不銹鋼時(shí),以1~3mm為佳,過(guò)長(zhǎng)則保護(hù)效果不好。6、對(duì)接打底時(shí),為防止底層焊道的背面被氧化,背面也需要實(shí)施氣體保護(hù)。7、為使氬氣很好地保護(hù)焊接熔池,和便于施焊操作,鎢極中心線與焊接處工件一般應(yīng)保持80~85°角,填充焊絲與工件表面夾角應(yīng)盡可能地小,一般為10°左右。8、防風(fēng)與換氣。有風(fēng)的地方,務(wù)請(qǐng)采取擋網(wǎng)的措施,而在室內(nèi)則應(yīng)采取適當(dāng)?shù)膿Q氣措施。二、不銹鋼MIG焊要點(diǎn)及注意事項(xiàng)1、采用平特性焊接電源,直流時(shí)采用反極性(焊絲接正極)2、一般采用純氬氣(純度為)或Ar+2%O2,流量以20~25L/min為宜。3、電弧長(zhǎng)度,不銹鋼的MIG焊接,一般都在噴射過(guò)渡的條件下來(lái)施焊,電壓要調(diào)整到弧長(zhǎng)在4~6mm的程度。4、防風(fēng)。MIG焊接容易受到風(fēng)的影響,有時(shí)微風(fēng)而產(chǎn)生氣孔,所以風(fēng)速在。三、不銹鋼藥芯焊絲焊接要點(diǎn)及注意事項(xiàng)1、采用平特性焊接電源,直流焊接時(shí)采用反極性。使用一般的CO2焊機(jī)就可以施焊,但送絲輪的壓力請(qǐng)稍調(diào)松。2、保護(hù)氣體一般為二氧化碳?xì)怏w,氣體流量以20~25L/min較適宜。</p><p> 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（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、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。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。?非常適合鑄造件缺點(diǎn)，零件表面拉傷、磨損，模具缺點(diǎn)的修復(fù)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南特種焊條焊絲供應(yīng)商,焊條焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179275563955078/6693482.png"></div><p> 引弧不好，電弧不穩(wěn)，熔池淺。導(dǎo)電嘴-母材間距離過(guò)短時(shí)：噴嘴容易被飛濺物堵塞，看不清焊接線，熔深變深。6.焊角度：二氧化碳?xì)怏w保護(hù)焊一般采用向前行進(jìn)法，這樣便于觀察焊接，焊縫形狀，氣體保護(hù)效果等。7.焊移動(dòng)和作業(yè)姿勢(shì)：焊由送絲軟管，氣管，控制電纜等構(gòu)成，為不影響焊接效果，應(yīng)采用保證焊彎曲不要過(guò)大，焊平衡的作業(yè)姿勢(shì)。操作者姿勢(shì)及焊操作不好時(shí)，均得不到均勻的焊縫，因此，改變姿勢(shì)，計(jì)算電壓進(jìn)行聯(lián)系，以求得到均勻的焊縫。8.收弧處理：在弧坑部開閉焊開關(guān)2~3次，使電弧重復(fù)閃滅進(jìn)行處理。在焊縫還是塊狀時(shí)，每隔，開3次即可充分埋好火口。9.焊縫連接方法：在火口前方引弧后，等電弧穩(wěn)定下來(lái)再返回火口部（接點(diǎn)）進(jìn)行焊接。五、日常檢修項(xiàng)目焊：***噴嘴，導(dǎo)電嘴，連接桿等部件上的飛濺物。導(dǎo)電嘴的檢查-焊絲是否吻合，孔徑是否合適，連接是否牢固，導(dǎo)電嘴是否在噴嘴的中間位置。檢查送絲機(jī)的零件是否有損壞或松動(dòng)，并及時(shí)***送絲部位的灰塵及贓物。檢查氣路是否有漏氣現(xiàn)象。檢查焊及焊接一體線是否有破損，如有銅線破損應(yīng)立即用絕緣膠布包好。六、氣保焊機(jī)參數(shù)調(diào)整方法1.比較好焊接規(guī)范（電流，電壓參數(shù)）的主要特征焊縫成型好。焊接過(guò)程穩(wěn)定，飛濺小。藥芯焊絲的制造過(guò)程控制非常嚴(yán)謹(jǐn)，由于熔填金屬來(lái)自鋼片皮材及焊劑所含的成份。湖南特種焊條焊絲供應(yīng)商</p><p style="text-indent:25px">主要用于工件表面的手工堆焊，以滿足如抗氧化、耐磨損和高溫下耐腐蝕等特殊性能要求。湖南特種焊條焊絲供應(yīng)商</p><p> 盡量選擇小電流焊接，因?yàn)樵陔娏魈髸r(shí)，易造成熔池翻滾，不僅飛濺大，成形也很差。6、焊接速度：對(duì)焊縫內(nèi)部與外觀的質(zhì)量都有重要影響。焊速過(guò)快會(huì)使氣體保護(hù)不好，出現(xiàn)氣孔等缺點(diǎn)，同時(shí)焊縫的冷卻速度相應(yīng)提高，因而降低了焊縫金屬的塑性的韌性。焊速過(guò)慢時(shí)，熔池變大，焊縫變寬，易因過(guò)熱造成焊縫金屬組.織粗大或燒穿。7、噴嘴與工件的角度：當(dāng)噴嘴與工件垂直時(shí)，飛濺會(huì)很大，電弧不穩(wěn)。為避免這種情況的出現(xiàn)，可將噴嘴后傾10-15度（焊接位置不同，焊角度也不同），即可保證焊縫成形良好，焊接過(guò)程穩(wěn)定。8、運(yùn)條方法：1.直線法，直線往復(fù)法。（適合小而窄的焊縫）。2.鋸齒形（適合寬焊縫），操作要點(diǎn)：在焊縫的兩邊稍作停頓，中間過(guò)度要**.月牙形運(yùn)條法（同鋸齒形）。以下幾種不宜掌握，知道就可以，三角形（斜三角，正三角），圓圖形（斜圓圖，正圓圖），八字形。七、焊接手法及焊接缺點(diǎn)產(chǎn)生的原因1.平焊（以右手向左焊，焊縫成形好，容易觀察熔池成形情況。角度大約45度;以右手向右焊，焊縫成形差）。湖南特種焊條焊絲供應(yīng)商</p><p style="text-indent:25px">簡(jiǎn)敏精密五金制造(上海)有限公司坐落顧北東路365號(hào)C區(qū)1101，交通便利，環(huán)境優(yōu)美，是一家生產(chǎn)型企業(yè)。是一家有限責(zé)任公司（自然）企業(yè)，隨著市場(chǎng)的發(fā)展和生產(chǎn)的需求，與多家企業(yè)合作研究，在原有產(chǎn)品的基礎(chǔ)上經(jīng)過(guò)不斷改進(jìn)，追求新型，在強(qiáng)化內(nèi)部管理，完善結(jié)構(gòu)調(diào)整的同時(shí)，優(yōu)良的質(zhì)量、合理的價(jià)格、完善的服務(wù)，在業(yè)界受到***好評(píng)。公司目前擁有***員工51~100人人，具有[ "模具焊條", "模具焊絲", "特種焊絲", "特種焊條" ]等多項(xiàng)業(yè)務(wù)。簡(jiǎn)敏五金制造以創(chuàng)造***產(chǎn)品及服務(wù)的理念，打造高指標(biāo)的服務(wù)，引導(dǎo)行業(yè)的發(fā)展。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/886487.html</p></div></div></div></div></div><div id="vzb23oo" class="page-right twoColRt"><div id="m3ldvmo" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zewy7ur" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="pzwyamj" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" 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