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10:01:57</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="ihjtk8v" 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="mbyqifr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="mld87g2" class="box"><p><p> 鍍鋅方管的成型方法介紹： </p> <p> 1、實(shí)彎： </p> <p> 實(shí)彎，顧名思義是壓實(shí)了彎折，實(shí)彎時(shí)內(nèi)外輥與管坯內(nèi)外壁雙向壓實(shí)。 </p> <p> (1)實(shí)彎的優(yōu)點(diǎn)是反彈小，成型準(zhǔn)確，而且只要輥型準(zhǔn)確，內(nèi)角成型的R比較準(zhǔn)確。 </p> <p> (2)實(shí)彎的缺點(diǎn)是有拉伸/減薄效應(yīng)。第壹，實(shí)彎會(huì)使彎折處產(chǎn)生拉伸，拉伸效應(yīng)使彎折線縱向的長(zhǎng)度縮短;第二，實(shí)彎彎折處金屬會(huì)因拉伸而變薄。 </p> <p> 2、空彎： </p> <p> 空彎是通過外輥與管坯外壁的單向接觸形成彎矩使帶料彎折，空彎會(huì)使彎折線產(chǎn)生壓縮，壓縮效應(yīng)使彎折線縱向伸長(zhǎng)，彎折處金屬出現(xiàn)堆積變厚，這就是空彎的壓縮/增厚效應(yīng)。 </p> <p> (1)空彎的優(yōu)點(diǎn)是可以在無法進(jìn)行實(shí)彎時(shí)進(jìn)行邊長(zhǎng)的彎折，昆明Q345C鍍鋅方管哪家好，比如方矩管的上邊/側(cè)邊同步彎折和精整。空彎還可以彎折R<0，昆明Q345C鍍鋅方管哪家好.2t的內(nèi)角而不致管壁發(fā)生斷裂，昆明Q345C鍍鋅方管哪家好。 </p> <p> (2)空彎的缺點(diǎn)是在上邊/側(cè)邊同步空彎時(shí)，由于上輥和下輥同時(shí)產(chǎn)生壓力，成型力容易超越臨界點(diǎn)，造成邊部失穩(wěn)內(nèi)凹，并且也會(huì)影響到機(jī)組穩(wěn)定運(yùn)行和成型質(zhì)量。這也是方矩管和圓管空彎成型時(shí)不同的特點(diǎn) 鍍鋅方管從生產(chǎn)工藝上是分為熱鍍鋅方管和冷鍍鋅方管的。昆明Q345C鍍鋅方管哪家好</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345C鍍鋅方管哪家好,鍍鋅方管" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121504765625/5330315.jpg"></div><p> 1mm厚的鍍鋅方管用多大的電流焊接焊接電流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。在鍍鋅鋼板點(diǎn)焊過程中，由于焊接規(guī)范不合理，會(huì)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(huì)形成細(xì)小裂紋或氣孔，殘留鋅較多時(shí)還會(huì)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(zhǎng)形管材，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(zhǎng)運(yùn)用壽命，尤其是熱鍍鋅方管能夠做到無死角對(duì)方管進(jìn)行防護(hù)，防腐防銹作用也會(huì)好許多。昆明Q345B鍍鋅方管報(bào)價(jià)鋅層是電鍍層，鋅層與鋼管基體獨(dú)立分層。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345C鍍鋅方管哪家好,鍍鋅方管" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121509335937/2071263.jpg"></div><p> 鍍鋅方管的分類 </p> <p> 鍍鋅方管從生產(chǎn)工藝上是分為熱鍍鋅方管和冷鍍鋅方管的。正是由于這兩種鍍鋅方管的加不相同也就造就了它們很多不同的物理和化學(xué)性質(zhì)。總的來說它們?cè)趶?qiáng)度、韌性和機(jī)械性能方面都有很多的區(qū)別。熱鍍鋅方管熱鍍鋅方管：是在使用鋼板或者是鋼帶卷曲成型后焊接制成的方管，并在這種方管的基礎(chǔ)上將方管置于熱鍍鋅池中經(jīng)過一系列化學(xué)反響有形成的一種方管。熱鍍鋅方管的生產(chǎn)工藝較為簡(jiǎn)單，且生產(chǎn)效率是很高的，品種規(guī)格也多，這種方管所需要的設(shè)備和資金很少，適合小型鍍鋅方管廠家的生產(chǎn)。但是從強(qiáng)度上來說這種鋼管的強(qiáng)度是遠(yuǎn)遠(yuǎn)低于無縫方管的。冷鍍鋅方管而冷鍍鋅方管是在所用的方管上利用冷鍍鋅的原理來使方管具有防腐蝕的性能。與熱鍍鋅不同冷鍍鋅涂料主要通過電化學(xué)原理來進(jìn)行防腐，因此必須保證鋅粉與鋼材的充分接觸，產(chǎn)生電極電位差，所以鋼材表面處理很重要。 </p><p> <span style="font-size:14px;"> 鋼材力學(xué)性能是保證鋼材最終使用性能（機(jī)械性能）的重要指標(biāo)，它取決于鋼的化學(xué)成分和熱處理制度。在鋼管標(biāo)準(zhǔn)中，根據(jù)不同的使用要求，規(guī)定了拉伸性能（抗拉強(qiáng)度、屈服強(qiáng)度或屈服點(diǎn)、伸長(zhǎng)率）以及硬度、韌性指標(biāo)，還有用戶要求的高、低溫性能等。</span> </p> <p> <span style="font-size:14px;"> 1、鍍鋅層的均勻性：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）。</span> </p> <p> <span style="font-size:14px;"> 2、表面質(zhì)量：鍍鋅鋼管的表面應(yīng)有完整的鍍鋅層，不得有未鍍上的黑斑和氣泡存在，允許有不大的粗糙面和局部鋅瘤存在。</span> </p> <p> <span style="font-size:14px;"> </span><span style="font-size:14px;"> 3、鍍鋅層重量：根據(jù)需方要求，鍍鋅鋼管可作鋅層重量測(cè)定，其平均值應(yīng)不小于500g/平方米，其中任何試樣不得小于480g/平方米。</span> ?鍍鋅方管的鍍鋅分層以及彎曲強(qiáng)度介紹.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="昆明Q345C鍍鋅方管哪家好,鍍鋅方管" src="http://tyunfile.71360.com/UploadFile/ynmaoxuan/637203121509238281/5004274.jpg"></div><p> 熱鍍鋅層對(duì)鍍鋅鋼管有防腐作用。 </p> <p> 鍍鋅鋼管防腐鋅比鐵有還負(fù)的電極電位，當(dāng)鋅和鐵構(gòu)成微電池時(shí)，鋅為陽極，鐵為陰極，在遭到腐蝕時(shí)，鋅溶解而鐵不受危害。鍍鋅層有小的裂紋或損壞時(shí)，鋅將以獻(xiàn)身陽極的形式以免繼續(xù)裂紋或損壞處的鋼鐵生銹，這是鍍鋅層比其他涂鍍層不錯(cuò)的主要特點(diǎn)。熱鍍鋅鋼管浸鍍鋅時(shí)，鋅鐵合金層與鋼鐵基體、鋅層之間均為冶金結(jié)合，比漆類與鋼鐵的結(jié)合還結(jié)實(shí)。 </p> <p> 鍍鋅鋼管防腐鋅層對(duì)鋼鐵有屏蔽保護(hù)作用。鋅在大氣或其它環(huán)境下在鋼鐵基體外表形成屏蔽層。鋅的腐蝕過程增加了其形成屏蔽層的能力，這是因?yàn)殇\和空氣中的氧、二氧化碳、潮氣等反應(yīng)，生成一種抗腐蝕副產(chǎn)物堿式碳酸鋅膜。 </p> <p> 介于基體與純鋅層之間的鋅鐵合金層含鋅在90%，對(duì)鋼有與鋅近似的電化學(xué)保護(hù)作用;鍍層越厚，經(jīng)用年限也越長(zhǎng)，經(jīng)用年限與厚度基本成正比。緬甸鍍鋅方管，云南貿(mào)軒商貿(mào)有限公司。昆明Q345B鍍鋅方管報(bào)價(jià)</p><p style="text-indent:25px">所有鍍件表面應(yīng)是清潔的，無損傷的。昆明Q345C鍍鋅方管哪家好</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。在鍍鋅鋼板點(diǎn)焊過程中，由于焊接規(guī)范不合理，會(huì)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(huì)形成細(xì)小裂紋或氣孔，殘留鋅較多時(shí)還會(huì)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(zhǎng)形管材，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(zhǎng)運(yùn)用壽命，尤其是熱鍍鋅方管能夠做到無死角對(duì)方管進(jìn)行防護(hù)，防腐防銹作用也會(huì)好許多。昆明Q345C鍍鋅方管哪家好</p><p style="text-indent:25px">云南貿(mào)軒商貿(mào)有限公司是一家有著雄厚實(shí)力背景、信譽(yù)可靠、勵(lì)精圖治、展望未來、有夢(mèng)想有目標(biāo)，有組織有體系的公司，堅(jiān)持于帶領(lǐng)員工在未來的道路上大放光明，攜手共畫藍(lán)圖，在云南省昆明市等地區(qū)的冶金礦產(chǎn)行業(yè)中積累了大批忠誠(chéng)的客戶粉絲源，也收獲了良好的用戶口碑，為公司的發(fā)展奠定的良好的行業(yè)基礎(chǔ)，也希望未來公司能成為行業(yè)的翹楚，努力為行業(yè)領(lǐng)域的發(fā)展奉獻(xiàn)出自己的一份力量，我們相信精益求精的工作態(tài)度和不斷的完善創(chuàng)新理念以及自強(qiáng)不息，斗志昂揚(yáng)的的企業(yè)精神將引領(lǐng)貿(mào)軒鋼材和您一起攜手步入輝煌，共創(chuàng)佳績(jī)，一直以來，公司貫徹執(zhí)行科學(xué)管理、創(chuàng)新發(fā)展、誠(chéng)實(shí)守信的方針，員工精誠(chéng)努力，協(xié)同奮取，以品質(zhì)、服務(wù)來贏得市場(chǎng)，我們一直在路上！</p></p><br /><p>文章來源地址: 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