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href="http://www.cdcfah.com/cp/third-guanjianbi_fengtou/">封頭</a>?蘇州球形封頭無錫國鑫封頭供應(yīng)</p><div id="0veyaso" class="leftbox clearfix"><h1>蘇州球形封頭無錫國鑫封頭供應(yīng)</h1><div id="pue2mfm" class="proBig"><div id="826qrlf" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179688209406/4267871.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lvt8omq" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179688209406/4267871.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ojsktyo" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>蘇州球形封頭,封頭</p><p><span>***更新：</span>2021-01-29 09:24:27</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7jscvq7" 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: </span>0510-83897088</p><p><span>地址: </span>玉祁街道曙光村</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="zedl4xj" class="page-proshow02"><p class="title">詳細說明</p><div id="v11zwak" class="box"><p><p style="text-indent:25px">不銹鋼封頭組織應(yīng)力變化的結(jié)果是表層受拉應(yīng)力,另一方面鋼在熱處理過程中由于組織的變化即奧氏體向馬氏體轉(zhuǎn)變時,因此容積的增大會隨同工件體積的膨脹,工件各部位先后相變，而組織應(yīng)力則是組織轉(zhuǎn)變過程中產(chǎn)生的,造成體積長短不一致而發(fā)生組織應(yīng)力。內(nèi)部受壓應(yīng)力,恰好與熱應(yīng)力相反。組織應(yīng)力的大小與工件在馬氏體相變區(qū)的冷卻速度,形狀。整個冷卻過程中,熱應(yīng)力與組織應(yīng)力綜合作用的結(jié)果,就是工件中實際存在應(yīng)力。這兩種應(yīng)力綜合作用的結(jié)果是十分復(fù)雜的,受著許多因素的影響,如成分、形狀、熱處置工藝等。就其發(fā)展過程來說只有兩種類型,即熱應(yīng)力和組織應(yīng)力,作用方向相反時二者抵消,作用方向相同時二者相互迭加。由于內(nèi)部冷卻體積收縮不能自由進行而使表層受壓內(nèi)部受拉，蘇州球形封頭，蘇州球形封頭，蘇州球形封頭。即在熱應(yīng)力的作用下使工件表層受壓而內(nèi)部受拉。這種現(xiàn)象受到冷卻速度,就會導(dǎo)致體積膨脹和收縮不均而產(chǎn)生應(yīng)力,不銹鋼封頭在加熱和冷卻過程中,不銹鋼封頭由于表層和內(nèi)部的冷卻速度和時間的不一致,形成溫差。半球封頭是由一塊園形坯料，經(jīng)圧制而成其為半球形。蘇州球形封頭</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州球形封頭,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179688209406/4267871.png"></div><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。封頭是壓力容器上的端蓋，是壓力容器的一個主要承壓部件。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，不準備再向前延伸了，那就用一個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。封頭的品質(zhì)直接關(guān)系到壓力容器的長期安全可靠運行。根據(jù)幾何形狀的不同，可分為球形、橢圓形、碟形、球冠形、錐殼和平蓋等幾種，其中球形、橢圓形、碟形、球冠型封頭又統(tǒng)稱為凸形封頭。在焊接上分為對焊封頭，承插焊封頭。用于各種容器設(shè)備，如儲罐、換熱器、塔、反應(yīng)釜、鍋爐和分離設(shè)備等。浙江球形封頭加工廠封頭普遍應(yīng)用于制藥，化工，原子能，航天，機械它等方面。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州球形封頭,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177986022692/3812274.png"></div><p style="text-indent:25px">球形封頭制造方法如下：1、鍛壓法：用型鍛機將管子端部或一部分予以沖伸，使外徑減少，常用型鍛機有旋轉(zhuǎn)式、連桿式、滾輪式。2、滾軋法：一般不用芯軸，適合于厚壁管內(nèi)側(cè)圓緣。在管內(nèi)放置芯子，外周用滾輪推壓，用于圓緣加工。沖壓法：在沖床上用帶錐度的芯子將管端擴到要求的尺寸和形狀。3、彎曲成形法：有三種方法較為常用，一種方法叫伸展法，另一種方法叫沖壓法，第三種滾輪法，有3－4個輥，兩個固定輥，一個調(diào)整輥，調(diào)整固定輥距，成品管件就是彎曲的。4、鼓脹法：一種是在管內(nèi)放置橡膠，上方用沖子壓縮，使管子凸出成形；另一種方法是液壓鼓脹成形，在管子中部充入液體，液體壓力把管子鼓成所需要的形狀，波紋管的生產(chǎn)大部分用的是這種方法。</p><p style="text-indent:25px">容器封頭的根本特點如下：在日常日子中咱們所見的產(chǎn)品比較多都是容器封頭，大到大型油罐、小到鍋爐等都是有容器封頭。1、容器封頭是在資料消耗不大的前提下，經(jīng)封頭制作出來的，其零件重量輕、硬度剛好，并且板料通過塑性變形后，金屬內(nèi)部的安排結(jié)構(gòu)得到改進，使封頭件強度有所進步。2、容器封頭具有較高的尺度精度，同模件尺度均勻一致，有較好的互換性。不需要進一步機械加工即可滿意一般的安裝和運用要求。3、在封頭過程中，由于資料的外表不受損壞，外表質(zhì)量不受影響，外觀光滑美觀，這為外表噴漆、電鍍、磷化及其他外表處理提供了便利條件。標準橢圓形的封頭壁厚大約比半球形的封頭厚一倍，而與圓筒的壁厚相近。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州球形封頭,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178030524304/5216185.png"></div><p style="text-indent:25px">壓力容器用封頭有哪些？一般來說壓力容器用封頭主要是按照封頭的形狀來進行區(qū)分的，比較常見的有球形封頭、圓形封頭、橢圓形封頭、蝶形封頭。這些封頭根據(jù)需求不同，會進行不同的選擇。這主要是因為幾何形狀和尺寸的改變，就會影響內(nèi)壓殼受壓力的變化，如果說應(yīng)力不能在可控范圍內(nèi)的話，就會影響容器的整體承載能力，甚至有的部位就會成為設(shè)備的破壞源，所以多關(guān)注封頭的要求還是比較重要的。除了形狀之外，由于封頭要時時刻刻受到壓力，所以做工上的要求也比較高，尤其是在壓力容器封頭上的接管，它的結(jié)構(gòu)也是非常復(fù)雜的，開孔的大小、位置以及受力的情況經(jīng)常會超出常規(guī)的設(shè)計范圍，所以要引入具體的分析設(shè)計，這樣才能保證平安的使用。封頭拋光通常會用專門的拋光機，這些拋光機的自動化設(shè)計非常高。浙江球形封頭加工廠</p><p style="text-indent:25px">封頭的加工在設(shè)計上現(xiàn)在不考慮加工減薄量，因此在制造的過程中要另外增加減薄量。蘇州球形封頭</p><p style="text-indent:25px">如何防止球形封頭變形？球形封頭中，根據(jù)壓機立柱間距和壓模尺寸及鋼板尺寸，選定頂圓需拼焊的板寬和拼焊塊數(shù)。盡可能采用壓鼓。直徑7.5m球形封頂圓取直徑6.2m，3塊板拼焊后壓鼓，然后車環(huán)縫坡口；直徑6.5m球形封頭頂圓取直徑5.36m，2塊板拼焊后壓鼓，然后車環(huán)縫坡口。直徑12m球形封頭頂圓取直徑lOm，直徑較大，由5塊板拼接，先分別壓形，然后切割研配向心、徑向縱縫坡口。為了防止自由變形，先制2個圓胎，檢測研配都可在此胎上進行。球形封頭是以球殼的球冠部分所形成的封頭，有半球形封頭和無折邊球性封頭兩類。它在同樣容積下表面積較小，相同承壓條件下需要的厚度較薄，從節(jié)省材料和強度上看，是較合理的。另外，球形封頭具有鍛打精良，表面光滑，耐酸耐堿耐高溫，外形美觀，質(zhì)感性能強等特點。此類封頭為一塊深度比較淺的球面體(球冠)。其結(jié)構(gòu)見圖。它結(jié)構(gòu)簡單，深度淺，易加_百一制造，成本低。但它與筒體連接處存在著明顯的形狀突變，導(dǎo)致產(chǎn)生比較高的局部應(yīng)力，故受力狀況極差，所以這類封頭一般只能用于直徑比較小，壓力較低的容器。蘇州球形封頭</p><p style="text-indent:25px">無錫國鑫封頭制造有限公司致力于機械及行業(yè)設(shè)備，是一家生產(chǎn)型公司。公司業(yè)務(wù)涵蓋封頭，不銹鋼封頭，碳鋼封頭，鋁封頭等，價格合理，品質(zhì)有保證。公司從事機械及行業(yè)設(shè)備多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。國鑫封頭秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3065493.html</p></div></div></div></div></div><div id="2mgfdh8" class="page-right twoColRt"><div 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