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class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265685263672/7237309.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="o3e2yso" 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>H13焊絲廠家</p><p><span>***更新：</span>2020-06-03 02:16:13</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="mfo3qc7" 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="1eq2nz2" class="page-proshow02"><p class="title">詳細說明</p><div id="v7nu2rd" class="box"><p><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(diào)節(jié)分為粗調(diào)、細調(diào)兩檔。電流的細調(diào)靠移動鐵芯4改變變壓器的漏磁來實現(xiàn)，H13焊絲廠家。向外移動鐵芯，磁阻增大，漏磁減小，H13焊絲廠家，則電流增大，反之，則電流減少。電流的粗調(diào)靠改變次級繞組的匝數(shù)來實現(xiàn)。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(jié)構(gòu)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(zhuǎn)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，H13焊絲廠家、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(jié)構(gòu)示意圖。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="H13焊絲廠家" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265685263672/7237309.png"></div><p> A172不銹鋼焊條符合GBE307-16相當AWSE307-16說明:A172是鈦型藥皮的不銹鋼焊條，交直流兩用。焊縫金屬具有優(yōu)良的抗裂性。用途:適于ASTM307鋼及其它異種鋼焊接，也可用于耐沖擊腐蝕鋼和過渡層堆焊。如高錳鋼、淬硬鋼等。A201不銹鋼焊條符合GBE316-16相當AWSE316-16說明:A201是鈦型藥皮的低碳Cr18Ni12Mo2不銹鋼焊條。施焊時藥皮具有不發(fā)紅、不開裂的特點，由于熔敷金屬添加Mo。故具有良好的耐蝕、耐熱及抗裂性能，特別對抗氯離子點蝕有好處。可交直流兩用。用途:用于焊接在有機和無機酸（非氧化性酸）介質(zhì)中工作的0Cr18Ni12Mo2不銹鋼設(shè)備。也可用于焊后不能進行熱處理的高鉻鋼或作為異種鋼焊接。A202不銹鋼焊條符合GBE316-16相當AWSE316-16說明:A202是鈦鈣型藥皮的低碳Cr18Ni12Mo2不銹鋼焊條。由于焊縫金屬添加Mo，故具有良好的耐蝕、耐熱及抗裂性能，特別對抗氯離子點蝕有好處。可交直流兩用，有優(yōu)良的操作工藝性能。用途:用于焊接在有機和無機酸（非氧化性酸）介質(zhì)中工作的0Cr18Ni12Mo2不銹鋼或作為異種鋼焊接。A207不銹鋼焊條符合GBE316-15相當AWSE316-15說明:A207是堿***皮的低碳Cr18Ni12Mo2不銹鋼焊條。由于熔敷金屬含有Mo，故具有良好的耐蝕、耐熱及抗裂性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="H13焊絲廠家" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265671318359/8288159.jpg"></div><p> 使氣孔消除，并且不會留引弧傷痕。為了保證焊縫起點處能夠焊透，焊條可作適當?shù)臋M向擺動，并在坡口根部兩側(cè)稍加停頓，以形成一定大小的熔池。引弧點的選擇引弧對焊接質(zhì)量有一定的影響，經(jīng)常因為引弧不好而造成始焊的缺點。綜上所述，在引弧時應做到以下幾點：(1)工件坡口處無油污、銹斑，以免影響導電能力和防止熔池產(chǎn)生氧化物。(2)在接觸時，焊條提起時間要適當。太快，氣體未電離，電弧可能熄滅；太慢，則使焊條和工件粘合在一起，無法引燃電弧。(3)焊條的端部要有裸露部分，以便引弧。若焊條端部裸露不均，則應在使用前用銼刀加工，防止在引弧時，碰擊過猛使藥皮成塊脫落，引起電弧偏吹和引弧瞬間保護不良。(4)引弧位置應選擇適當，開始引弧或因焊接中斷重新引弧，一般均應在離始焊點后面10～20mm處引弧，然后移至始焊點，待熔池熔透再繼續(xù)移動焊條，以消除可能產(chǎn)生的引弧缺點。(二)運條電弧引燃后，就開始正常的焊接過程。為獲得良好的焊，縫成形，焊條得不斷地運動。焊條的運動稱為運條。運條是電焊工操作技術(shù)水平的具體表現(xiàn)。焊縫質(zhì)量的優(yōu)劣、焊縫成形的好壞，主要由運條來決定。運條由三個基本運動合成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="H13焊絲廠家" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669218750/3372736.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/125424.html</p></div></div></div></div></div><div id="73w4hyk" class="page-right twoColRt"><div id="k2uoxov" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ga22dpg" 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