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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="esigu04" class="twoCol"><div id="u4us0ci" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_wjgj/">五金、工具</a>?<a href="http://www.cdcfah.com/cp/second-wjgj_guanjianbi/">管件</a>?<a href="http://www.cdcfah.com/cp/third-guanjianbi_fengtou/">封頭</a>?球形封頭加工無錫國鑫封頭供應(yīng)</p><div id="ago2ei2" class="leftbox clearfix"><h1>球形封頭加工無錫國鑫封頭供應(yīng)</h1><div id="a4iyuoc" class="proBig"><div id="oeus0ou" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178030524304/5216185.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="k2c2wuk" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178030524304/5216185.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="k240w44" 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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>球形封頭加工,封頭</p><p><span>***更新：</span>2021-02-05 13:26:28</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="ms2ac0q" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">無錫國鑫封頭制造有限公司</a></p><p><span>聯(lián)系人：</span>魏峰潔</p><p><span>郵箱: </span>239703@qq.com</p><p><span>電話: </span>13861726550</p><p><span>傳真: </span>0510_83898088</p><p><span>網(wǎng)址: </span>http://www.wxgxft.com</p><p><span>手機(jī): </span>0510-83897088</p><p><span>地址: </span>玉祁街道曙光村</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="g2ykquk" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="swmu0aq" class="box"><p><p style="text-indent:25px">不銹鋼封頭是石油化工、原子能到食品制藥諸多行業(yè)壓力容器設(shè)備中不可缺少的重要部件。封頭是壓力容器上的端蓋，是壓力容器的一個(gè)主要承壓部件。所起的作用是密封作用。一是做成了罐形壓力容器的上下底，二是管道到頭了，不準(zhǔn)備再向前延伸了，那就用一個(gè)封頭在把管子用焊接的形式密封住。和封頭的作用差不多的的產(chǎn)品有盲板和管帽，不過那兩種產(chǎn)品是可以拆卸的。而封頭焊好了之后是不可以再拆卸的。與之配套的管件有壓力容器、管道、法蘭盤、彎頭、三通、四通等產(chǎn)品。不銹鋼封頭的品質(zhì)直接關(guān)系到壓力容器的長(zhǎng)期安全可靠運(yùn)行。我國現(xiàn)有的封頭標(biāo)準(zhǔn)，是按結(jié)構(gòu)型式（橢圓形、碟形、錐形）、成形方式（沖壓、旋壓）的不同，而分別制訂的，這不*造成不同標(biāo)準(zhǔn)封頭質(zhì)量要求不完全一致的不合理現(xiàn)象，同時(shí)也給標(biāo)準(zhǔn)封頭的選用、標(biāo)準(zhǔn)的修訂帶來某些困難，球形封頭加工，球形封頭加工。沖壓成形，球形封頭加工，封頭進(jìn)行熱壓時(shí)，應(yīng)將上下胎模進(jìn)行預(yù)熱，預(yù)熱溫度應(yīng)在150℃以上。球形封頭加工</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="球形封頭加工,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178030524304/5216185.png"></div><p style="text-indent:25px">封頭屬壓力容器中鍋爐部件的一種。通常是在壓力容器的兩端使用的。再有就是在管道的末端做封堵之用的一種焊接管件產(chǎn)品。有比較多種的形式。接下來我為您介紹一下山東封頭的標(biāo)準(zhǔn)。我國現(xiàn)有的封頭標(biāo)準(zhǔn)，是按結(jié)構(gòu)型式(橢圓形、碟形、錐形)、成形方式(沖壓、旋壓)的不同，而分別制訂的，這不*造成不同標(biāo)準(zhǔn)封頭質(zhì)量要求不完全一致的不合理現(xiàn)象，同時(shí)也給標(biāo)準(zhǔn)封頭的選用、標(biāo)準(zhǔn)的修訂帶來某些困難。1、以往的封頭標(biāo)。準(zhǔn)都是*與GB150《鋼制壓力容器》配套的，即只考慮了按規(guī)則設(shè)計(jì)的封頭的制造、檢驗(yàn)與驗(yàn)收要求，而我國早在1995年就完成GB150與JB4732了壓力容器基礎(chǔ)標(biāo)準(zhǔn)的雙軌制(與《鋼制壓力容器分析設(shè)計(jì)標(biāo)準(zhǔn)》)，缺少與分析設(shè)計(jì)相配套的封頭標(biāo)準(zhǔn)，不能不說是我國壓力容器標(biāo)準(zhǔn)化工作的一大缺憾；2、GB150屬強(qiáng)制性標(biāo)準(zhǔn)，而根據(jù)GB150編制并與之配套的封頭標(biāo)準(zhǔn)卻是指導(dǎo)(推薦)性的，這顯然是不合理的，也難以保證封頭這一重要受壓元件的質(zhì)量。上海儲(chǔ)氣罐封頭廠家拼接封頭時(shí)，需要拼接距離，它應(yīng)大于3δ且不小于100mm。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="球形封頭加工,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179721099912/4809230.png"></div><p style="text-indent:25px">橢圓封頭影響裂紋產(chǎn)生的因素：1、化學(xué)成分的影響。根據(jù)相關(guān)資料公式計(jì)算可知316，310的值分別為+1.00、+4.72故其非常穩(wěn)定不容易產(chǎn)生裂紋。2、加工變形量的影響。封頭在冷旋壓過程中，材料的變形量較大翻邊部位較大可達(dá)40%以上根據(jù)相關(guān)資料介紹Cr-Ni不銹鋼冷加工對(duì)導(dǎo)磁率的影響產(chǎn)生馬氏體組織的含量隨化學(xué)成分的增加而減少隨冷加工變形率的增大而增加。304、321的變形率大約在15%時(shí)，馬氏體增加加速316在變形率的60%時(shí)馬氏體增加尚不明顯。3、焊接的影響。在等強(qiáng)度原則下選用焊接工藝焊接熱影響區(qū)的晶粒長(zhǎng)大使其塑性下降焊接缺陷中的尖銳缺口在旋壓過程中被拉裂，都使其性能低于母材而首先產(chǎn)生裂紋。</p><p style="text-indent:25px">在現(xiàn)行各種封頭中，標(biāo)準(zhǔn)橢圓封頭以其制造加工容易，應(yīng)力分布狀況理想以及節(jié)省材料等優(yōu)點(diǎn)而被普遍使用。封頭拼接焊縫屬A類，從橢圓封頭的制造來看，一般是先拼接后壓制成型。在壓制過程中，內(nèi)部缺陷可能會(huì)延伸，同時(shí)又可能產(chǎn)生新缺陷。因此，探傷實(shí)際的選擇顯得非常重要。有明確規(guī)定說：成型后的封頭應(yīng)在形狀檢查合格后再進(jìn)行無損探傷。由于壓制成型后的焊縫形狀復(fù)雜，如果透明方法選擇不當(dāng)，容易造成漏檢。通常采用定向曝光機(jī)可獲得質(zhì)量較高的檢測(cè)結(jié)果，但此法工作效率低、勞動(dòng)強(qiáng)度大。凡冷成形加工都會(huì)產(chǎn)生一定的殘余應(yīng)力和冷作強(qiáng)化，封頭也不例外。如遇上容器的安裝應(yīng)力、焊接殘余應(yīng)力、熱應(yīng)力時(shí)，將產(chǎn)生應(yīng)力疊加，如果使用在有應(yīng)力腐蝕的環(huán)境時(shí)，在短時(shí)間內(nèi)有可能會(huì)產(chǎn)生應(yīng)力腐蝕裂紋。球形封頭與筒身連接處存在不連續(xù)應(yīng)力。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="球形封頭加工,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178480785204/2623291.png"></div><p style="text-indent:25px">不銹鋼封頭冷加工出現(xiàn)磁性的具體原因。其實(shí)，當(dāng)處于亞穩(wěn)定狀態(tài)的奧氏體不銹鋼進(jìn)行冷加工的時(shí)候，其中有一部分的奧氏體會(huì)發(fā)生馬氏體轉(zhuǎn)變，同時(shí)還會(huì)和原來的奧氏體保持共格。在實(shí)際工作中，我們通常會(huì)把這種以切變方式在極短時(shí)間內(nèi)發(fā)生的無擴(kuò)散相變，稱作致生馬氏體相變或者是形變誘導(dǎo)馬氏體相變。說到這里，我們就需要對(duì)不銹鋼封頭產(chǎn)品所采用材料的結(jié)構(gòu)來進(jìn)行進(jìn)一步說明。事實(shí)上，不銹鋼中馬氏體通常會(huì)包括兩種結(jié)構(gòu)形式，一種是有體心立方結(jié)構(gòu)的α’馬氏休，另一種是密集六方結(jié)構(gòu)的ε馬氏體。也就是說，如果在加工不銹鋼封頭的時(shí)候，所采用的材料結(jié)構(gòu)不同的話，那么就可能會(huì)發(fā)生不同的情況。在這兩種不同形態(tài)中，其中第1種結(jié)構(gòu)的材料具有一定的磁性，而第二種結(jié)構(gòu)的材料不具有磁性。但是，如果鎳鉻含量較高的話，也會(huì)產(chǎn)生ε馬氏體。因此，我們就會(huì)明白，當(dāng)不銹鋼封頭的部分組織在進(jìn)行轉(zhuǎn)換的過程中，就會(huì)產(chǎn)生一定的磁性。通常情況下，奧氏體的穩(wěn)定性主要取決于其自身的化學(xué)成分。如果想要避免有磁性產(chǎn)生的話，應(yīng)當(dāng)更換材料，或者是進(jìn)行固溶處理。封頭功能越來越多樣化，使得它的發(fā)展也是越來越壯大，在各大機(jī)械行業(yè)中頻繁使用到的封口材料。連云港鋁封頭生產(chǎn)廠家直銷</p><p style="text-indent:25px">封頭要保證表面光潔度，減少填料摩擦。球形封頭加工</p><p style="text-indent:25px">封頭是石油化工、原子能到食品制藥諸多行業(yè)壓力容器設(shè)備中不可缺少的重要部件。不同時(shí)期封頭價(jià)格都會(huì)有所浮動(dòng)，而封頭標(biāo)準(zhǔn)沒有經(jīng)常變動(dòng)，我國現(xiàn)有的封頭標(biāo)準(zhǔn)，是按結(jié)構(gòu)型式（橢圓形、碟形、錐形）、成形方式（沖壓、旋壓）的不同，而分別制訂的，這不*造成不同標(biāo)準(zhǔn)封頭質(zhì)量要求不完全一致的不合理現(xiàn)象，同時(shí)也給標(biāo)準(zhǔn)封頭的選用、標(biāo)準(zhǔn)的修訂帶來某些困難。一、以往的封頭標(biāo)準(zhǔn)都是*與GB150《鋼制壓力容器》配套的，即只考慮了按規(guī)則設(shè)計(jì)的封頭的制造、檢驗(yàn)與驗(yàn)收要求，而我國早在1995年就完成GB150與JB4732了壓力容器基礎(chǔ)標(biāo)準(zhǔn)的雙軌制（與《鋼制壓力容器分析設(shè)計(jì)標(biāo)準(zhǔn)》），缺少與分析設(shè)計(jì)相配套的封頭標(biāo)準(zhǔn)，不能不說是我國壓力容器標(biāo)準(zhǔn)化工作的一大缺憾。二、GB150屬強(qiáng)制性標(biāo)準(zhǔn)，而根據(jù)GB150編制并與之配套的封頭標(biāo)準(zhǔn)卻是指導(dǎo)（推薦）性的，這顯然是不合理的，也難以保證封頭這一重要受壓元件的質(zhì)量。球形封頭加工</p><p style="text-indent:25px">無錫國鑫封頭制造有限公司致力于機(jī)械及行業(yè)設(shè)備，是一家生產(chǎn)型公司。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下封頭，不銹鋼封頭，碳鋼封頭，鋁封頭深受客戶的喜愛。公司將不斷增強(qiáng)企業(yè)重點(diǎn)競(jìng)爭(zhēng)力，努力學(xué)習(xí)行業(yè)知識(shí)，遵守行業(yè)規(guī)范，植根于機(jī)械及行業(yè)設(shè)備行業(yè)的發(fā)展。國鑫封頭立足于全國市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3177606.html</p></div></div></div></div></div><div id="2uaq0c2" class="page-right twoColRt"><div id="ocai0sy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ouqg0ag" class="recomPic likePro"><a href="http://www.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="k4s244y" 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