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href="http://m.cdcfah.com/cp/first-_yjkc/">冶金礦產(chǎn)</a>?<a href="http://m.cdcfah.com/cp/second-yjkc_gangcai/">鋼材</a>?<a href="http://m.cdcfah.com/cp/third-gangcai_tdcp/">涂鍍產(chǎn)品</a>?昆明Q345B熱鍍鋅管廠家批發(fā) 誠(chéng)信互利云南貿(mào)軒商貿(mào)供應(yīng)</p><div id="n7iighy" class="leftbox clearfix"><h1>昆明Q345B熱鍍鋅管廠家批發(fā) 誠(chéng)信互利云南貿(mào)軒商貿(mào)供應(yīng)</h1><div id="keg3lka" class="proBig"><div id="3u72rd3" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203187098417968/2871711.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="r8g3uwv" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203187098417968/2871711.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="i3cq0dk" 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>云南省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>昆明Q345B熱鍍鋅管廠家批發(fā)</p><p><span>***更新：</span>2020-05-22 18:23:25</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="ycz8gs3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">云南貿(mào)軒商貿(mào)有限公司</a></p><p><span>聯(lián)系人：</span>謝經(jīng)理</p><p><span>郵箱: </span>1339843057@qq.com</p><p><span>電話: </span>13888426708</p><p><span>傳真: </span>138_</p><p><span>網(wǎng)址: </span>http://www.maoxuan666.com</p><p><span>手機(jī): </span>138-88426708</p><p><span>地址: </span>云南省昆明經(jīng)開區(qū)宏錫路4-1-2號(hào)鐵公雞物流園二號(hào)寫字樓408號(hào)</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="lu3ssed" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="zoqfwiz" class="box"><p><p> 熱鍍鋅管的技術(shù)要求： </p> <p> 1，昆明Q345B熱鍍鋅管廠家批發(fā)、牌號(hào)和化學(xué)成分鍍鋅鋼管用鋼的牌號(hào)和化學(xué)成分應(yīng)符合GB 3092所規(guī)定的黑管用鋼的牌號(hào)和化學(xué)成分。2、制造方法黑管的制造方法（爐焊或電焊）由制造廠選擇。鍍鋅采用熱浸鍍鋅法。3、螺紋及管接頭3.1 帶螺紋交貨的鍍鋅鋼管，螺紋應(yīng)在鍍鋅后車制。螺紋應(yīng)符合YB 822的規(guī)定。3，昆明Q345B熱鍍鋅管廠家批發(fā)，昆明Q345B熱鍍鋅管廠家批發(fā).2 鋼制管接頭應(yīng)符合YB 238的規(guī)定；可鍛鑄鐵管接頭應(yīng)符合YB 230的規(guī)定。4、力學(xué)性能鋼管鍍鋅前的力學(xué)性能應(yīng)符合GB 3092的規(guī)定。5、鍍鋅層的均勻性鍍鋅鋼管應(yīng)作鍍鋅層均勻性的試驗(yàn)。鋼管試樣在硫酸銅溶液中連續(xù)浸漬5次不得變紅（鍍銅色）。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345B熱鍍鋅管廠家批發(fā)" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203187098417968/2871711.jpg"></div><p> 鍍鋅管的焊接注意要點(diǎn)是什么 </p> <p> <br /> </p> <p> 如果角焊縫是焊接的，尤其是丁字接頭角焊縫，**有可能產(chǎn)生貫穿裂紋。鍍鋅鋼焊接過程中，坡口表面和邊緣的鋅層在電弧加熱的作用下會(huì)氧化、熔化、蒸發(fā)，甚至?xí)l(fā)出白煙和蒸汽，容易造成焊縫氣孔。 </p> <p> 氧化形成的氧化鋅具有高熔點(diǎn)，約高于1800℃。如果焊接過程中參數(shù)太小，會(huì)導(dǎo)致氧化鋅渣夾雜。因?yàn)殇\變成了脫氧劑。產(chǎn)生Feo-mno或feo-mno-sio2低熔點(diǎn)氧化物渣。其次，由于鋅的蒸發(fā)，大量的白煙和灰塵被排放出來，這對(duì)人體有刺激和有害的影響。因此，焊接位置的鍍鋅層必須打磨掉。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345B熱鍍鋅管廠家批發(fā)" src="http://tyunfile.71360.com/UpLoadFile/2019/4/21/20/636914769931487694_ynmaoxuan_6702311.jpg"></div><p style="text-indent:25px"><p>電焊焊接鍍鋅管的那時(shí)候常有什么小竅門<p>鍍鋅鋼電焊焊接特性剖析<p>鍍鋅鋼一般是在高碳鋼外鍍一層鋅，熱鍍鋅層一般在20um厚。鋅的溶點(diǎn)在419°C，熔點(diǎn)908°C上下。在電焊焊接中，鋅熔化成液體浮在溶池表層或在焊接根處部位。鋅在鐵中具備很大固溶度，鋅液體會(huì)沿晶界深層次腐蝕焊接金屬材料，低溶點(diǎn)鋅產(chǎn)生“液體金屬材料脆裂”。<p>鋅與鐵可產(chǎn)生金屬材料間延性化學(xué)物質(zhì)，這種延性相使焊接金屬材料塑性變形減少，在拉地應(yīng)力功效下而造成裂痕。<p>假如電焊焊接角焊縫，特別是在是T形連接頭的角焊縫非常容易造成透過裂痕。鍍鋅鋼電焊焊接時(shí)，焊縫表層及邊沿處的鋅層，在電孤熱功效下，造成空氣氧化、熔融、揮發(fā)以致?lián)]傳出乳白色粉塵和蒸氣，非常容易造成焊接出氣孔。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345B熱鍍鋅管廠家批發(fā)" src="http://tyunfile.71360.com/UpLoadFile/2019/4/21/20/636914770064560930_ynmaoxuan_5945627.jpg"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/4960.html</p></div></div></div></div></div><div id="n7wi7dp" class="page-right twoColRt"><div id="bvmy2su" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="bf387ne" class="recomPic likePro"><a href="http://m.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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="dxx2g3c" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" 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