南京RD12M焊絲商家歡迎來(lái)電簡(jiǎn)敏精密五金制造供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 焊接重要的焊接構(gòu)件及合金鋼焊件，為了防止氫致裂紋的產(chǎn)生，提高焊縫金屬和熱影響區(qū)的韌性，要選用低氫堿性焊條施焊。使用堿性低氫焊條**重要一環(huán)，是焊條的烘干，必須按照烘干要求進(jìn)行，一般焊前烘干工藝要"><meta name="keywords" content="南京RD12M焊絲商家"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<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>?南京RD12M焊絲商家歡迎來(lái)電簡(jiǎn)敏精密五金制造供應(yīng)</p><div id="82tkvlh" class="leftbox clearfix"><h1>南京RD12M焊絲商家歡迎來(lái)電簡(jiǎn)敏精密五金制造供應(yīng)</h1><div id="8pn8jsd" class="proBig"><div id="3v23lne" 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="s3lxmd7" 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="7zxvrxb" 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>南京RD12M焊絲商家</p><p><span>***更新：</span>2020-06-09 00:29:38</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="3l3pghn" 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="fvgxt7k" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8rfqhye" class="box"><p><p> 焊接重要的焊接構(gòu)件及合金鋼焊件，為了防止氫致裂紋的產(chǎn)生，提高焊縫金屬和熱影響區(qū)的韌性，要選用低氫堿性焊條施焊。使用堿性低氫焊條**重要一環(huán)，是焊條的烘干，必須按照烘干要求進(jìn)行，一般焊前烘干工藝要求為350°×1小時(shí)，雨季或潮濕天氣可提高到400°×1小時(shí)。烘干不好，后果很嚴(yán)重，不但會(huì)產(chǎn)生焊接缺點(diǎn)，也會(huì)嚴(yán)重影響焊接工藝性能，千萬(wàn)不要大意！其次，焊件焊接處要清理干凈，徹底***油污、銹跡、水分、雜質(zhì)、臟東西，合理的焊接工藝這一點(diǎn)都寫得很清楚?！锊僮饕c(diǎn)堿性低氫焊條的操作，主要是采用短弧操作，電弧盡量壓短。焊接時(shí)，手把要穩(wěn)，電弧越短越好。運(yùn)條時(shí)，焊條傾角與焊縫前進(jìn)方向成85°-90°，與左右保持垂直，如果焊條傾角過(guò)大或左右不正，即使是壓低了電弧，也不是真正的短弧。短弧焊的目的是更好的應(yīng)用渣氣聯(lián)合保護(hù)功能，保護(hù)熔池不受空氣侵襲，保護(hù)熔池焊接冶金反應(yīng)順利進(jìn)行，減少焊接缺點(diǎn)的產(chǎn)生。多層焊時(shí)，每層焊肉要薄些，以利于熔池中氣體逸出，熔渣容易浮出，出現(xiàn)缺點(diǎn)也容易清理，南京RD12M焊絲商家，南京RD12M焊絲商家，南京RD12M焊絲商家。多層焊，每層焊縫方向相反，以利于整體焊縫熱量均勻。操作手法采用畫圓圈式的橫向擺動(dòng)，熔池冷卻速度變慢，利于氣體逸出，避免產(chǎn)生氣孔，提高焊縫質(zhì)量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京RD12M焊絲商家" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265664882812/4463123.png"></div><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(guò)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(guò)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(guò)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(guò)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(guò)4h時(shí)，應(yīng)重新烘干。重復(fù)烘干次數(shù)不宜超過(guò)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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京RD12M焊絲商家" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265671318359/8288159.jpg"></div><p> 不銹鋼焊條簡(jiǎn)介G202不銹鋼焊條符合GBE410-16相當(dāng)AWSE410-16說(shuō)明:G202是鈦鈣型藥皮的Cr13不銹鋼焊條，可交直流兩用。用途:用于焊接0Cr13和1Cr13不銹鋼結(jié)構(gòu)，也用于耐蝕、耐磨的表面堆焊。G207不銹鋼焊條符合GBE410-15相當(dāng)AWSE410-15說(shuō)明:G207是堿***皮的鉻不銹鋼焊條，采用直流反接，可進(jìn)行全位置焊接。用途:用于0Cr13及1Cr13不銹鋼結(jié)構(gòu)焊接，也可用于耐蝕堆焊，可全位置焊接。G217不銹鋼焊條符合GBE410-15相當(dāng)AWSE410-15說(shuō)明:G217是堿***皮的Cr13不銹鋼焊條，采用直流反接，可進(jìn)行全位置焊接。用途:用于焊接0Cr13和1Cr13、2Cr13不銹鋼結(jié)構(gòu)，如汽輪機(jī)葉片的補(bǔ)焊及對(duì)接，也可用于耐蝕、耐磨的表面堆焊。G302不銹鋼焊條符合GBE430-16相當(dāng)AWSE430-16說(shuō)明:G302是鈦型藥皮的Cr17不銹鋼焊條，可交直流兩用。用途:用于焊接耐硝酸腐蝕、耐熱的Cr17不銹鋼結(jié)構(gòu)。G307不銹鋼焊條符合GBE430-15相當(dāng)AWSE430-15說(shuō)明:G307是堿***皮的Cr17不銹鋼焊條，采用直流反接，可進(jìn)行全位置焊接。用途:用于焊接耐硝酸腐蝕、耐熱的Cr17不銹鋼結(jié)構(gòu)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京RD12M焊絲商家" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669218750/3372736.png"></div></p><br 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