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"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</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="2fxegnc" class="twoCol"><div id="lfmov8p" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</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>?蘇州H13焊絲供應商歡迎來電簡敏精密五金制造供應</p><div id="fmsprts" class="leftbox clearfix"><h1>蘇州H13焊絲供應商歡迎來電簡敏精密五金制造供應</h1><div id="jifxzli" class="proBig"><div id="t78olip" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/676197.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="p3w28bh" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/676197.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="x23g3sp" 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>蘇州H13焊絲供應商</p><p><span>***更新：</span>2020-06-20 13:22:47</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="kgxurdf" 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: </span>021-69726282</p><p><span>地址: </span>顧北東路365號C區(qū)1101</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="txzwdfm" class="page-proshow02"><p class="title">詳細說明</p><div id="etldkhj" class="box"><p><p> 并且會燒損噴嘴。比方50小管可以選用6號,7號噴嘴打底蓋面都可以，蘇州H13焊絲供應商,159可以選用6號噴嘴打底,8號,10號蓋面手工鎢極氬弧焊時氬氣的流量及選擇原則手工鎢極氬弧焊時,氬氣的流量一般為5~15L/min。氬氣流量應根據(jù)環(huán)境不同而不同,如果在室內(nèi),氬氣流量可小些,為5-7L/min,在室外,當有風時,氬氣流量應大些,為7~15L/mn并采取防風措施、防止空氣侵入熔池而產(chǎn)生氣孔。氬氣表中的流量計的刻度1格為1MP,1格表示氬氣流量1L/min,浮球所指的刻度為流量值開關(guān)的旋轉(zhuǎn)方向:順時針旋轉(zhuǎn)為關(guān),逆時針旋轉(zhuǎn)為開。氬氣表(氬氣流量計)在工作中,如果氣瓶離自己較遠,不方便查看氣流大小時可以將噴嘴對準臉部來感覺氣流大小,時間長了就可以大概判斷氣體流量大小。需要注意的是為保證氬氣純度,氬氣瓶內(nèi)氣體壓力為。手工鎢極氬弧焊焊接前試氣方法若氬氣皮帶與氬氣表、氬弧把接口漏氣,氬弧把皮帶有破損及鎢極偏心、夾心鼓脹,氬氣流量過大或過小,都會使氬氣純度低于。試驗檢測氣體純度時,應找一塊厚廢鋼板,打磨出一塊露出金屬光澤，蘇州H13焊絲供應商。***步,對打磨區(qū)域自熔。第二步,對自熔部分填充焊絲焊接。第三步,對焊縫表面進行自熔。第四步，蘇州H13焊絲供應商,對自熔部分進行填絲焊接。第五步,將上一層焊縫表面進行再一次填絲焊接。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州H13焊絲供應商" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/676197.png"></div><p> 注：1、直徑不大于、E5015、E5016和E5018型焊條及直徑不大于，可適用于立焊和仰焊。2、E4322型焊條適宜單道焊。焊條型號舉例如下：例14、焊條的選用（1）結(jié)構(gòu)鋼（低碳鋼、中碳鋼、普通低合金鋼）焊條的選用采用結(jié)構(gòu)鋼制造的焊接結(jié)構(gòu)，大多要求焊縫金屬與母材等強度，此時可按結(jié)構(gòu)鋼的強度選擇相應強度等級的焊條。選擇時應注意以下兩點：1）鋼材的強度等級是按屈服點劃分的，而結(jié)構(gòu)鋼焊條的強度等級系指其抗拉強度的比較低保證值，兩者是不一致的。通常應選擇抗拉強度保證值與母材相同或稍高的焊條。2）焊縫強度不是比母材高出愈多愈好，而應等于或稍高于母材。如果焊縫強度過高，往往使焊縫的塑性下降，反而有害。當焊接接頭不要求焊縫與其等強度時，可選用抗拉強度較低的焊條。（2）合金結(jié)構(gòu)鋼焊條的選用合金結(jié)構(gòu)鋼焊接時，通常均不要求焊縫金屬的合金成分與該鋼種的合金成分相同或相近，而主要考慮等強度。但如果母材是耐熱鋼、耐腐蝕鋼時，從保證焊接接頭的耐熱、耐腐蝕性能出發(fā)，則要求焊縫金屬的主要合金成分與母材相同或相近。此時，應根據(jù)母材的化學成分選用焊條。（3）根據(jù)母材抗裂性要求選用焊條母材成分中，如果含C或S、P等雜質(zhì)較高時，很容易在焊縫中形成裂紋。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州H13焊絲供應商" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/676197.png"></div><p> 電弧周圍形成多種有害氣體，其中主要有臭氧、氮氧化物、一氧化碳和氟化氫等。臭氧是一種刺激性氣體，呈淡藍色。濃度較高時，發(fā)出腥臭味；高濃度臭氧還略帶酸味。臭氧對人體的主要危害是對呼吸道及肺有強烈刺激作用。往往引起咳嗽、胸悶、食欲不振、疲勞無力、頭暈、全身疼痛等，嚴重時還會引起***和肺水腫等。氮氧化物是刺激性氣體。二氧化氮呈紅褐色，具有特殊臭味。氮氧化物對人體的危害主要是對肺組.織的刺激作用。其被吸人呼吸道后，在肺泡內(nèi)逐漸與水作用形成硝酸和亞硝酸，對肺組.織產(chǎn)生強烈刺激和腐蝕作用，引起中毒。慢性中毒的主要癥狀是神經(jīng)衰弱，如***、***、食欲不振、體重下降。濃度高的氮氧化物能引起急性中毒，其中毒輕者，*發(fā)生急性***；重度中毒時，引發(fā)咳嗽激烈、呼吸困難、虛脫、全身軟弱無力等癥狀。氮氧化物對人體的作用也是可逆的，隨著脫離作業(yè)時間的增長，其不良影響逐漸減少或消除。在鎢極氬弧焊時，如果不采取通風措施，其濃度往往超過衛(wèi)生標準十幾倍，甚至幾十倍。我國規(guī)定的氮氧化物(換算成二氧化氮)的衛(wèi)生標準為5mg／m3。在焊接過程中，通常臭氧和氮氧化物同時存在，因此它們的毒性更大。一般情況下。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/326586.html</p></div></div></div></div></div><div id="7byf7gn" class="page-right twoColRt"><div id="mq7qse3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="imjgy7i" 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" 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