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class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="b3zawad" class="clearfix searchWrap"><div id="wxdp38m" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="rzbikqx" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = "index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會(huì)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="lzlnzlx" class="twoCol"><div id="wkbi7ms" 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>?昆山焊絲批發(fā) 歡迎來電簡敏精密五金制造供應(yīng)</p><div id="apwszqx" class="leftbox clearfix"><h1>昆山焊絲批發(fā) 歡迎來電簡敏精密五金制造供應(yīng)</h1><div id="qoaho3j" class="proBig"><div id="bul7bd2" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265664882812/4463123.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="x2v8wvr" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265664882812/4463123.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ke83ghy" 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>昆山焊絲批發(fā),焊絲</p><p><span>***更新：</span>2020-08-07 19:14:59</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="qpo3nub" 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(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="hgsokbd" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="jn24htf" class="box"><p><p> 圖3—10硅整流電弧焊機(jī)1—硅整流器組2—三相變壓器3—三相磁飽和電抗器4—輸出電抗器5—通風(fēng)機(jī)組(二)工作原理工作原理見圖3—11。接通開關(guān)K1，通風(fēng)機(jī)組FM運(yùn)轉(zhuǎn)，風(fēng)壓開關(guān)KEY閉合，主接觸器Jc-1閉合，三相弧焊變壓器B1工作。與此同時(shí)Jc-2閉合，控制變壓器B2工作，磁放大器運(yùn)行，硅整流器工作，輸出一定的直流電壓，這就是焊機(jī)的空載電壓。由于沒有焊接電流，磁放大器的電抗繞組FD電抗壓降幾乎為零，使焊機(jī)輸出端具有較高的空載電壓，便于引弧。當(dāng)施焊時(shí)，由于有輸出，形成電流，電抗繞組FD通過交流電，使其得到較大的電抗壓降，并隨電流的增大，電抗壓降隨之增大，從而得到陡降外特性，昆山焊絲批發(fā)。當(dāng)短路時(shí)，由于短路電流很大，昆山焊絲批發(fā)，F(xiàn)D通過的交流電急增，它產(chǎn)生的電抗壓降使工作電壓幾乎接近于零，這就限制了短路電流。圖3—11ZXG—300型硅整流電焊機(jī)電氣原理圖改變控制回路磁盤電阻R10，使磁放大器控制繞組FK中直流電發(fā)生變化，鐵芯中的磁通就相應(yīng)發(fā)生變化，從而改變了磁放大器交流繞組FD的電流。為減少網(wǎng)路電壓波動(dòng)對(duì)焊接的影響，在控制回路中采用了鐵磁諧振式穩(wěn)壓器，以保證激磁電流的穩(wěn)定，減少對(duì)焊接電流的影響。按動(dòng)K2，通風(fēng)機(jī)組FM停止工作，風(fēng)壓開關(guān)KEY開啟，昆山焊絲批發(fā)，主接觸器Jc-1斷開。焊接接頭的強(qiáng)度隨著焊絲的合金元素含量變化。昆山焊絲批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆山焊絲批發(fā),焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265664882812/4463123.png"></div><p> 焊前準(zhǔn)備：大直徑厚壁管U形坡口的試件如下圖所示。材料為20鋼，其裝配及定位與第四章水平轉(zhuǎn)動(dòng)焊條電弧焊相同。設(shè)備：焊條電弧焊的焊機(jī)為ZXG-400,埋弧焊焊機(jī)為MZ3-500,焊接調(diào)速滾輪架一臺(tái)，焊接操作架一臺(tái)。焊前清理與上述相同，焊劑、焊條須嚴(yán)格烘干。焊接參數(shù)焊接參數(shù)見下表，焊接電源極性釆用直流反接。焊接操作：打底層和填充層都采用焊條電弧焊，焊接操作與第四章第四節(jié)的大直徑管水平轉(zhuǎn)動(dòng)焊相同。蓋面層采用埋弧焊，焊劑為HJ431，其顆粒度為(14~60目）。采用直流反接。焊接蓋面層時(shí)，先預(yù)調(diào)節(jié)焊接參數(shù)，調(diào)節(jié)焊接機(jī)頭使焊嘴距離焊件20~30mm，下圖中的偏移量B為20~30mm，并使焊絲對(duì)準(zhǔn)坡口的中心線，開啟焊劑漏斗，使焊劑堆在待焊區(qū)，由于管子表面曲率較大，焊劑容易散失，為在焊接過程中更好地保護(hù)熔池，可在焊接區(qū)的前方加一如圖所示擋板或采取其它防止焊劑散失的措施。按下“啟動(dòng)”按鈕，進(jìn)行焊接，并耳聽和觀察焊接過程，注意焊機(jī)的電流表和電壓表及調(diào)速滾輪的轉(zhuǎn)速表的指示，隨時(shí)進(jìn)行調(diào)節(jié)，以保證焊接過程的穩(wěn)定。在焊完一周后須重疊一段焊縫，***按“停止”按鈕，熄弧后關(guān)閉焊劑漏斗。焊后清理與檢驗(yàn)：用錘子、鋼絲刷***焊渣，并對(duì)收弧處進(jìn)行修磨。昆山焊絲批發(fā)電弧穩(wěn)定劑鈉及鉀可以使電弧保持柔和順暢而且降低飛濺。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆山焊絲批發(fā),焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265671318359/8288159.jpg"></div><p> 不僅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(huì)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(huì)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(huì)促進(jìn)熔滴細(xì)化，吸收氣體量也會(huì)增加，產(chǎn)生氣孔的可能性會(huì)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><p> 此時(shí)應(yīng)選用抗裂性較好的堿性焊條。（4）根據(jù)焊件的工作條件、使用性能和幾何形狀選用焊條1）載荷性質(zhì)在承受動(dòng)載荷或沖擊載荷情況下，除了要求保證抗拉強(qiáng)度外，還對(duì)焊縫金屬的塑性和沖擊韌度有較高的要求，推薦使用堿性焊條。2）工作介質(zhì)若焊件是在腐蝕介質(zhì)中工作的不銹鋼件或其它耐腐蝕材料，必須根據(jù)介質(zhì)種類、濃度、工作溫度等情況，選擇或按設(shè)計(jì)規(guī)定采用相應(yīng)的不銹鋼焊條或其它耐腐蝕焊條。3）幾何形狀根據(jù)焊件幾何形狀的復(fù)雜程度、剛性的大小、焊接坡口制備情況以及焊接部位所處的位臵選用焊條，應(yīng)遵循下列原則：[1]形狀復(fù)雜或大厚度的焊件，由于焊縫金屬在冷收縮時(shí)會(huì)產(chǎn)生較大的應(yīng)力，易形成裂紋，因此應(yīng)選用抗裂性較高的焊條，如堿性焊條。[2]某些難以清理干凈的焊接部位，應(yīng)選用氧化性強(qiáng)，對(duì)鐵銹、氧化皮和油垢敏感性較小的酸性焊條，以免產(chǎn)生氣孔等缺點(diǎn)。[3]焊接部件因受條件限制不能翻轉(zhuǎn)時(shí)，必須選用能在任何空間位臵（全位臵）進(jìn)行焊接的焊條。（5）根據(jù)工地設(shè)備和勞動(dòng)條件選用焊條1）根據(jù)工地設(shè)備狀況選用焊條[1]在沒有直流焊機(jī)的工作場所，不能選用***用直流電源的堿性焊條，應(yīng)選用交流焊條或交、直流兩用的堿性焊條。[2]對(duì)于某些焊件，若選用一般焊條。藥芯焊絲是很有發(fā)展前途的新型焊接材料，國產(chǎn)藥芯焊絲的品種和用量與日俱增。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆山焊絲批發(fā),焊絲" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265666699219/955806.png"></div><p> 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、不銹鋼焊接要點(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、電弧長度，不銹鋼的MIG焊接，一般都在噴射過渡的條件下來施焊，電壓要調(diào)整到弧長在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，都應(yīng)當(dāng)采取防風(fēng)措施。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。3、焊嘴與工件間的距離以15~25mm為宜。4、干伸長度，一般的焊接電流為250A以下時(shí)約15mm。直至1972年小絲徑焊絲開始發(fā)展才**的擴(kuò)展了藥芯焊絲使用的領(lǐng)域。上海激光焊絲銷售廠</p><p style="text-indent:25px">在埋弧焊、電渣焊和其他熔化極氣體保護(hù)電弧焊時(shí)，焊絲既是填充金屬，同時(shí)焊絲也是導(dǎo)電電極。昆山焊絲批發(fā)</p><p> 焊條烘干的目的焊條在儲(chǔ)存、運(yùn)輸期間藥皮會(huì)吸潮，使藥皮中的水分增加。焊條使用前進(jìn)行烘干的作用就是降低藥此中的含水量，其目的是：1）減少焊接過程中的飛濺，使焊接電弧能夠穩(wěn)定地燃燒。2）防止在焊縫中產(chǎn)生氣孔。3）防止產(chǎn)生在焊接某些低合金鋼時(shí)由氫引起的延遲裂紋。根據(jù)JB3223—83《焊條質(zhì)量管理規(guī)程》的規(guī)定，酸性焊條烘干的溫度為75～150℃時(shí)間為1～2h。酸性焊條由于對(duì)水分產(chǎn)生氣孔的敏感性不大，所以烘干溫度相對(duì)要低一些。堿性焊條的烘干溫度350--400℃，時(shí)間1--2小時(shí)，烘干后放在100--150℃的保溫箱內(nèi)，隨用隨取。JB4709中有推薦保溫時(shí)間和溫度(非強(qiáng)制性標(biāo)準(zhǔn)),不過實(shí)際使用時(shí)比較好參考焊條質(zhì)保書中的溫度及時(shí)間要求！堿性焊條過高的烘干溫度也是不合適的：一是浪費(fèi)能源；其次是當(dāng)烘干溫度超過500℃時(shí)，藥皮中的某些成分（如CaCO3）就要發(fā)生分解，起不到應(yīng)有的保護(hù)作用。焊條烘干時(shí)的注意事項(xiàng)焊條烘干時(shí)應(yīng)注意如下事項(xiàng)：1）低氫型焊條在常溫下超過4h時(shí)，應(yīng)重新烘干。重復(fù)烘干次數(shù)不宜超過3次。2）烘干焊條時(shí)，禁止將焊條突然放進(jìn)高溫爐內(nèi)，或從高溫爐中突然取出冷卻，防止焊條因驟冷驟熱而發(fā)生的藥皮開裂現(xiàn)象。3）焊條烘干時(shí)應(yīng)作記錄。昆山焊絲批發(fā)</p><p style="text-indent:25px">簡敏精密五金制造(上海)有限公司是一家精密五金、普通機(jī)械設(shè)備加工(限分支機(jī)構(gòu)經(jīng)營)、銷售;模具加工(限分支機(jī)構(gòu)經(jīng)營)及維修;工業(yè)設(shè)備、包裝材料、焊材、五金配件的加工(以上限分支機(jī)構(gòu)經(jīng)營)、銷售;工業(yè)自動(dòng)化設(shè)備安裝及維修(除特種設(shè)備);自行車及配件(電動(dòng)自行車按本市產(chǎn)品目錄經(jīng)營)、蓄電池、橡膠制品、電動(dòng)工具、焊接材料、汽車配件、金屬材料、鋼材、建材的批發(fā)兼零售。的公司，致力于成為客戶業(yè)務(wù)創(chuàng)新、五金、工具可信賴的合作伙伴。簡敏五金制造擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供[ "模具焊條", "模具焊絲", "特種焊絲", "特種焊條" ]。公司堅(jiān)持以技術(shù)創(chuàng)新為發(fā)展引擎，以客戶滿意為動(dòng)力，目前擁有51~100人專業(yè)人員，年?duì)I業(yè)額達(dá)到1000-2000萬元。簡敏五金制造創(chuàng)始人龔儉生，始終關(guān)注客戶，以優(yōu)化創(chuàng)新的科技，竭誠為客戶提供比較好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/841376.html</p></div></div></div></div></div><div id="8fjqxoa" class="page-right twoColRt"><div id="ts3mgxe" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="feszqco" class="recomPic likePro"><a 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