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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rpwiuwd" 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>昆明鍍鋅方管批發(fā)</p><p><span>***更新：</span>2020-06-19 14:27:10</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="racjl3w" 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號鐵公雞物流園二號寫字樓408號</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="pwtfrgc" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="rqc8ug7" class="box"><p><p> 1mm厚的鍍鋅方管用多大電流焊接 </p> <p> 焊接電流120-140a之間。通常用φ3.2的焊條，焊接電流宜偏小，焊接頭嚴(yán)格防腐，昆明鍍鋅方管批發(fā)。在鍍鋅鋼板點(diǎn)焊過程中，由于焊接規(guī)范不合理，會使接頭中殘留部分鋅及鋅鐵合金在熔核結(jié)晶過程中，可能會形成細(xì)小裂紋或氣孔，殘留鋅較多時(shí)還會形成軟化組織。 </p> <p> 鍍鋅方管是橫截面為方形，外表鍍鋅的長形管材，昆明鍍鋅方管批發(fā)，可分為冷鍍鋅方管、熱鍍鋅方管與鍍鋅帶方管。方管的運(yùn)用壽命是沒有詳細(xì)的運(yùn)用年限的，都是依據(jù)運(yùn)用環(huán)境與生產(chǎn)工藝改變的。而鍍鋅方管的鍍鋅層是常用的防腐防銹措施，能夠有用增長運(yùn)用壽命，昆明鍍鋅方管批發(fā)，尤其是熱鍍鋅方管能夠做到無死角對方管進(jìn)行防護(hù)，防腐防銹作用也會好許多。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明鍍鋅方管批發(fā)" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121506669922/9438399.jpg"></div><p> 鍍鋅方管工藝---焊接 </p> <p> 在鍍鋅20#無縫方距管[1]的第壹層焊縫時(shí)，盡量使鋅層熔化并使之汽化、蒸發(fā)而逸出焊縫，可很大程度上減少液體鋅留在焊縫中。在焊角焊縫時(shí)，同樣在第壹層盡量使鋅層熔化并使之汽化、蒸發(fā)而逸出焊縫，其方法是先將焊條端部向前移出約5~7mm左右，當(dāng)使鋅層熔化后再回到原來位置繼續(xù)向前施焊。再橫焊和立焊時(shí)，如選用短渣焊條如J427，咬邊傾向會很小；如果采用前后往返運(yùn)條技術(shù)，更可以得到無缺點(diǎn)的焊接質(zhì)量。 </p> <p> 焊接工藝控制鍍鋅20#無縫方距管的焊前準(zhǔn)備與一般的低碳鋼是相同的，需要注意的是要認(rèn)真處理好坡口尺寸和附近的鍍鋅層。為了焊透，坡口尺寸要適當(dāng)，一般60~65°，要留有一定的間隙，一般為1.5~2.5mm;為了減少鋅對焊縫的滲透，在焊之前，可將坡口內(nèi)的鍍鋅層清理以后再焊。在實(shí)際監(jiān)理工作中，采用了集中打坡口，不留鈍邊工藝進(jìn)行集中控制，兩層焊接工藝，減少了未焊透的可能性<span style="display:none;"></span> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明鍍鋅方管批發(fā)" src="http://tyunfile.71360.com/UpLoadFile/2019/4/23/3/636915855300456478_ynmaoxuan_5033016.jpg"></div><p> <br /> </p> <p> 鍍鋅方管的熱浸法生產(chǎn)工藝流程分享： </p> <p> 鍍鋅方管的熱浸法即把成卷的鋼板，連續(xù)浸在熔解有鋅的鍍槽中制成鍍鋅方管； </p> <p> 合金化鍍鋅鍍鋅方管熱浸法制造，但在出槽后，立即把它加熱到500℃左右，使其生成鋅和鐵的合金薄膜。這種鍍鋅具有良好的涂料的密著性和焊接性； </p> <p> 電鍍鋅方管電鍍法制造這種鍍鋅具有良好的加工性。但鍍層較薄，耐腐蝕性不如熱浸法鍍鋅； </p> <p> 單面鍍和雙面差鍍鋅。單面鍍鋅，即只在一面鍍鋅的產(chǎn)品。在焊接、涂裝、防銹處理、加工等方面，具有比雙面熱鍍鋅方管更好的適應(yīng)性。 </p> <p> <br /> </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/314451.html</p></div></div></div></div></div><div id="koaspra" class="page-right twoColRt"><div id="7dfhofh" class="box01 margin10 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