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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7liamjl" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/3318362.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="eeoviur" 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>浙江特種焊絲供應(yīng)商</p><p><span>***更新：</span>2020-06-02 11:11:21</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="wl7czlx" 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="xmwyvcz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="lqikroa" class="box"><p><p> 手工鎢極氬弧工藝特點(diǎn)工作原理鎢極氬弧焊是采用鎢棒作為電極，利用氬氣作為保護(hù)氣體進(jìn)行焊接的一種氣體保護(hù)焊方法。通過鎢極與工件之間產(chǎn)生電弧，利用從焊噴嘴中噴出的氬氣流在電弧區(qū)形成嚴(yán)密封閉的氣層，使電極和金屬熔池與空氣隔離，以防止空氣的侵入。同時(shí)利用電弧熱來熔化基本金屬和填充焊絲形成熔池。液態(tài)金屬熔池凝固后形成焊縫。由于氬氣是一種惰性氣體，不與金屬起化學(xué)反應(yīng)，所以能充分保護(hù)金屬熔池不被氧化。同時(shí)氬氣在高溫時(shí)不溶于液態(tài)金屬中，所以焊縫不易生成氣孔。因此，氬氣的保護(hù)作用是有效和可靠的，可以獲得較高質(zhì)量的焊縫。焊接時(shí)鎢極不熔化，所以鎢極氬弧焊又稱為非熔化極氬弧焊。根據(jù)所采用的電源種類，鎢極氬弧焊又分為直流、交流和脈沖三種。焊不銹鋼用什么焊條？不銹鋼怎么焊接？焊接技術(shù)焊接是被焊工件的材質(zhì)（同種或異種），通過加熱或加壓或兩者并用，并且用或不用填充材料，使工件的材質(zhì)達(dá)到原子間的結(jié)合而形成長久性連接的工藝過程，浙江特種焊絲供應(yīng)商。那么不銹鋼焊接要點(diǎn)與注意事項(xiàng)有哪些要點(diǎn)呢？焊不銹鋼用什么焊條不銹鋼焊條可分為鉻不銹鋼焊條和鉻鎳不銹鋼焊條，浙江特種焊絲供應(yīng)商，這兩類焊條中凡符合國標(biāo)的，浙江特種焊絲供應(yīng)商，均按國標(biāo)GB/T983-2012規(guī)定考核。鉻不銹鋼具有一定的耐蝕。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江特種焊絲供應(yīng)商" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265669208984/3318362.png"></div><p> 紅外線輻射約為普通焊條電弧焊的1～，氬弧焊電弧產(chǎn)生的紫外線輻射約為焊條電弧焊的5～20倍。在有限空間內(nèi)焊接時(shí)，臭氧的濃度可增大到危險(xiǎn)程度，在焊接過程中，還會(huì)產(chǎn)生二氧化碳，一氧化碳等有害氣體和金屬粉塵，這些都對焊工產(chǎn)生一定的危害。所以我們在焊接過程中要做好防護(hù)，選用電極的材料，要盡量選用放射性小的鈰鎢。磨削電極時(shí)，要戴好口罩，手套，且工作后要洗手，讓危害降到比較低。高頻電磁場的危害焊接通常使用高頻振蕩器的頻率為200～500kHz，電壓2500～3500V，電場強(qiáng)度140～190V/m。引弧時(shí)，產(chǎn)生的高頻電磁場強(qiáng)度在60～110V/m之間，超過參考衛(wèi)生標(biāo)準(zhǔn)(20V/m)數(shù)倍。在非熔化極氬弧焊和等離子弧焊割時(shí)，常用高頻振蕩器來激發(fā)引弧，有的交流氬弧焊機(jī)還用高頻振蕩器來穩(wěn)定電弧。人體在高頻電磁場作用下，能吸收一定的輻射能量，產(chǎn)生生物學(xué)效應(yīng)，主要是熱作用。高頻電磁場強(qiáng)度受許多因素影響，如距離，振蕩器和振蕩回路越近場強(qiáng)越高，反之則越低。此外，與高頻部分的屏蔽程度等有關(guān)。人體在高頻電磁場作用下會(huì)產(chǎn)生生物學(xué)效應(yīng)，焊工長期接觸高頻電磁場能引起植物神經(jīng)功能紊亂和神經(jīng)衰弱。表現(xiàn)為全身不適、頭昏***、疲乏、食欲不振、***及血壓偏低等癥狀。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江特種焊絲供應(yīng)商" src="http://tyunfile.71360.com/UploadFile/shjianmin2/637179265685263672/7237309.png"></div><p> 并**終流進(jìn)下層槽，再由水泵將下層槽的水泵入與水龍頭相連的水管，所述水龍頭位于上層槽的前壁上方并正對焊條過孔，使水龍頭出來的水淋在上層槽的前側(cè)板上并分別濺入上層槽和連通槽，從而實(shí)現(xiàn)冷卻水的循環(huán)利用；所述自動(dòng)切斷機(jī)構(gòu)包括工作臺(tái)，所述工作臺(tái)上安裝有上導(dǎo)向膠輪和下導(dǎo)向膠輪，上導(dǎo)向膠輪和下導(dǎo)向膠輪的中部分別設(shè)置有環(huán)向缺槽，且兩個(gè)環(huán)向凹槽正好圍成供橫截面為等邊三角形的焊條通過的通道，在通道的正前方設(shè)置有左、右限位柱供焊條從中穿過；所述工作臺(tái)的后壁上安裝有朝向后方的“7”字形的安裝架，所述安裝架的水平板上方的靠后位置處左右居中安裝有立塊，所述立塊上開有前后貫通的焊條穿孔，在立塊的前方水平安裝有正對焊條穿孔的焊條導(dǎo)向管，焊條導(dǎo)向管位于上導(dǎo)向膠輪與下導(dǎo)向膠輪圍成的通道的正后方，所述安裝架的上方通過“門”形安裝架安裝有朝向下方的豎直氣缸，豎直氣缸的活塞桿與焊條切斷刀相連，所述焊條切斷刀與立塊的后壁貼合，并能在豎直氣缸的帶動(dòng)下上下運(yùn)動(dòng)，從而將經(jīng)焊條導(dǎo)向管、焊條穿孔出來的焊條切斷。作為上述方案的推薦，所述上層槽的前壁頂部設(shè)置有高于焊條過孔的溢水缺口，上層槽的冷卻水還能經(jīng)溢水缺口流入連通槽。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江特種焊絲供應(yīng)商" 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/117455.html</p></div></div></div></div></div><div id="xh88bik" class="page-right 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