江西RD12M焊絲批發(fā) 歡迎來電簡敏精密五金制造供應-b2b網站_b2b電子商務平臺【買產品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 第三節(jié)焊條電弧焊與電弧切割設備的基本結構和工作原理圖3—6焊機分類焊條電弧焊所用焊機按電源的種類可分為交流弧焊機和直流弧焊機兩大類。其中直流弧焊機按變流的方式不同又分為：弧焊整流器、逆變弧焊機"><meta name="keywords" content="江西RD12M焊絲批發(fā)"><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 http-equiv="Cache-Control" content="no-siteapp" /> <script>var 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class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265668525390/8688498.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mq3fgn2" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265668525390/8688498.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="nwyahdp" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>江西RD12M焊絲批發(fā)</p><p><span>***更新：</span>2020-06-20 05:21:38</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="n8kprya" 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="zyf8bxj" class="page-proshow02"><p class="title">詳細說明</p><div id="gac8h3k" class="box"><p><p> 第三節(jié)焊條電弧焊與電弧切割設備的基本結構和工作原理圖3—6焊機分類焊條電弧焊所用焊機按電源的種類可分為交流弧焊機和直流弧焊機兩大類。其中直流弧焊機按變流的方式不同又分為：弧焊整流器、逆變弧焊機和旋轉式直流弧焊發(fā)電機(現已淘汰)等。每一類型的焊機根據原理和結構特點又可分為多種型式，具體見圖3—6一、交流弧焊機(一)結構交流弧焊機的三個類別的結構分別如圖3—7～圖3—9所示。圖3—7BX1—330交流弧焊機1—初級繞組；2、3—次級繞組；4—動鐵芯；5—靜鐵芯；6—接線板；7—搖把圖3—8BX2—500型(同體式)焊機結構示意圖1—固定鐵心2—初級繞組3—次級繞組4—電抗線圈5—活動鐵心圖3—9BX3—300型(動圈式)焊機結構示意圖1—初級線圈2—次級線圈3—鐵心(二)工作原理目前應用*****的“動鐵式”交流焊機如圖3—7所示。它是一個結構特殊的降壓變壓器，屬于動鐵芯漏磁式類型。焊機的空載電壓為60～70V。工作電壓為30V，電流調節(jié)范圍為50～450A，江西RD12M焊絲批發(fā)。鐵芯由兩側的靜鐵芯5和中間的動鐵芯4組成，江西RD12M焊絲批發(fā)，江西RD12M焊絲批發(fā)，變壓器的次級繞組分成兩部分，一部分緊繞在初級繞組1的外部，另一部分繞在鐵芯的另一側。前一部分起建立電壓的作用，后一部分相當于電感線圈。焊接時。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西RD12M焊絲批發(fā)" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265668525390/8688498.png"></div><p> 如果*是引孤時使用高頻振蕩器，因時間較短，影響較小，如果頻繁起弧，或者把高頻振蕩器做為穩(wěn)弧裝置在焊接過程中持續(xù)使用，則高頻電磁場可成為有害因素之一。放射性的危害氬弧焊使用的釷鎢含有l(wèi)％一％的氧化釷。釷是一種放射性元素，能放射出α，β，γ三種射線。在焊接過程及與釷鎢棒的接觸過程中，可能會受到放射線的影響。通過大量調查，每天消耗的釷鎢棒*100--200mg，放射劑量極微，對人體影響不大。但是在容器內焊接時，通風不暢，煙塵中的放射性粒子有可能超過衛(wèi)生標準；二是在磨削釷鎢棒時及存放釷鎢棒的地點，放射性氣溶膠和放射性粉塵的濃度，可達到甚至超過衛(wèi)生標準。放射性物質侵入體內，可引起慢性放射性疾病，形成內照射，主要表現在一般機能狀態(tài)減弱，可以看到明顯的衰弱無力、對傳染病的抵抗力明顯降低、體重減輕等癥狀。百度百科：放射性氣溶膠，懸浮在空氣或其他氣體中含有放射性核素的固體或液體微粒。固體或液體放射性微粒懸浮在空氣或氣體介質中形成的分散體系。氣溶膠的基本特性是不穩(wěn)定,小于；1～10微米的微粒沉降緩慢，懸浮在空氣中較久。放射性氣溶膠的電離效應高、濃度低、微粒上易帶電（由放射性衰變產生）。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="江西RD12M焊絲批發(fā)" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265671406250/559850.png"></div><p> 電感線圈的感抗電壓降使電焊機獲得較低的工作電壓，這是電焊機具有陡降外特性的原因。引弧時，電焊機能供給較高的電壓和較小的電流，當電弧穩(wěn)定燃燒時，電流增大，而電壓急劇降低；當焊條與工件短路時，也限制了短路電流。焊接電流調節(jié)分為粗調、細調兩檔。電流的細調靠移動鐵芯4改變變壓器的漏磁來實現。向外移動鐵芯，磁阻增大，漏磁減小，則電流增大，反之，則電流減少。電流的粗調靠改變次級繞組的匝數來實現。該電弧焊機的工作條件為應在海拔不超過1000m，周圍空氣溫度不超過+40℃、空氣相對濕度不超過85％等條件下使用，不應在有害工業(yè)氣體、水蒸汽、易燃、多灰塵的場合下工作。二、直流弧焊機(一)結構由于整流或直流弧焊機與直流弧焊發(fā)電機比較，因沒有機械旋轉部分，具有噪音小，空載損耗小、效率高、成本低和制造維護簡單等優(yōu)點。因此，有取代直流弧焊發(fā)電機的趨勢，在這里只介紹整流式直流弧焊機。整流式直流弧焊機常用型號如ZXG—300、ZXG—400等。硅整流電弧焊機是利用硅半導體整流元件(二極管)將交流電變?yōu)橹绷麟娮鳛楹附与娫?。圖3—10為硅整流電弧焊機的結構示意圖。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/322209.html</p></div></div></div></div></div><div id="3oaxjqx" class="page-right twoColRt"><div id="jyv8p3m" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kzlxeqc" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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