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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178593831455/1545798.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jhp5ftf" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178593831455/1545798.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ljpnthv" 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)品關鍵詞：</span>南京SF雙層油罐封頭制作廠,封頭</p><p><span>***更新：</span>2021-01-26 06:19:37</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="hvljpvl" 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="rxvl5b3" class="page-proshow02"><p class="title">詳細說明</p><div id="jxxfvj3" class="box"><p><p style="text-indent:25px">封頭屬于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，封頭的制作、查驗與查驗一同來看一下吧。1、封頭的制作、查驗與查驗除應契合本規(guī)范規(guī)則外，還應契合圖樣或訂貨技能協(xié)議需求；2、封頭制作單位應建立健全契合國家壓力容器安全監(jiān)察組織有關法規(guī)需求的質(zhì)量體系，以確保橢圓封頭質(zhì)量；3、封頭的拼焊應由持有相應資歷的“鍋爐壓力容器焊工合格證書”的人員擔任；4、封頭的無損檢測應由持有相應種類和技能等級的“鍋爐壓力容器無損檢測人員資歷證”的人員擔任；對剖析規(guī)劃的橢圓封頭進行無損檢測的人員，其技能等級不得低于II級；5、凡制作封頭的鋼板應有以查驗和追蹤的承認符號；在制作過程中，如原有承認符號被裁掉或鋼板分紅幾塊，應于鋼板切割前完結(jié)符號的移植；承認符號的表達方式由橢圓封頭制作單位規(guī)則；6，南京SF雙層油罐封頭制作廠、關于有防腐需求的不銹鋼以及復合鋼板制橢圓封頭，不得在防腐蝕面選用硬印作為資料的承認符號和焊工標志；7，南京SF雙層油罐封頭制作廠、關于低溫壓力容器用橢圓封頭及需進行疲勞剖析規(guī)劃的橢圓封頭，南京SF雙層油罐封頭制作廠，不得選用硬印作為資料的承認符號和焊工標志。半球形封頭常用在高壓容器上。南京SF雙層油罐封頭制作廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京SF雙層油罐封頭制作廠,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393178593831455/1545798.png"></div><p style="text-indent:25px">不銹鋼封頭的熱處理：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，因比容的增大會伴隨工件體積的膨脹，工件各部位先后相變，造成體積長大不一致而產(chǎn)生組織應力。不銹鋼封頭組織應力變化的較終結(jié)果是表層受拉應力，心部受壓應力，恰好與熱應力相反。組織應力的大小與工件在馬氏體相變區(qū)的冷卻速度，形狀，材料的化學成分等因素有關。只不過熱應力在組織轉(zhuǎn)變以前就已經(jīng)產(chǎn)生了不銹鋼封頭，而組織應力則是在組織轉(zhuǎn)變過程中產(chǎn)生的，在整個冷卻過程中，熱應力與組織應力綜合作用的結(jié)果，就是工件中實際存在的應力。這兩種應力綜合作用的結(jié)果是十分復雜的，受著許多因素的影響，如成分、形狀、熱處理工藝等。就其發(fā)展過程來說只有兩種類型，即熱應力和組織應力，作用方向相反時二者抵消，作用方向相同時二者相互迭加。不管是相互抵消還是相互迭加，兩個應力應有一個占主導因素，熱應力占主導地位時的作用結(jié)果是工件心部受拉，表面受壓。組織應力占主導地位時的作用結(jié)果是工件心部受壓表面受拉。安徽液罐車封頭企業(yè)維護好封頭才是硬道理。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京SF雙層油罐封頭制作廠,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393179688209406/4267871.png"></div><p style="text-indent:25px">封頭是壓力容器上使用的堵塞裝置，對密封性有非常嚴格的要求。因為密封性會關系到壓力容器的使用，嚴重時甚至會出現(xiàn)工作事故，因此，密封性必須要十分注意。我們知道，為了讓封頭具有更好的密封性，通常封頭在制作完成后，會對其進行平口處理，使其與壓力容器可以更好的銜接在一起。那么，封頭的平口應該如何處理？不論瓜瓣封頭還是整體封頭,不論沖壓封頭還是旋壓封頭,不論標準橢圓封頭還是球形封頭或碟形封頭,成型后都較原設計高出一個值,這個值就是修切余量,以備車削或割掉。應根據(jù)封頭規(guī)格和本單位設備情況決定平口方法,若不能在立車床上平口時,則考慮用氣割或等離子切割方法平口。這里介紹的是用氣割(或等離子切割)進行平口的方法。在現(xiàn)實的生活之中比較多的封頭都是使用在高壓容器之上的，這種高壓容器是一種能在內(nèi)部產(chǎn)生極大壓強的器件，如果我們不對于這種容器進行密封的話，那么其中的壓力能量是不穩(wěn)定的。在封頭的平口工作中，需要根據(jù)具體制造工藝選擇坡口形式，外坡還是內(nèi)坡，坡角度這些都是有要求的。</p><p style="text-indent:25px">壓制封頭前需要做哪些準備工作？1、運行前檢查：開機前檢查油箱上的油位指示器，如缺油應及時補充至正常油位。檢查周圍環(huán)境是否有影響正常工作的障礙物。開機后應先使設備各部空運轉(zhuǎn)2～3次，確認各部正常后方可正式工作。2、作業(yè)操作：將封頭平穩(wěn)放置在工裝的園環(huán)上。將2個插銷拉出至適當位置，防止封頭受壓后上移。按下按鈕，使壓頭前進或后退即可完成封頭橢圓修正工序。該設備修正封頭直徑為2150-2420mm之間。操作臺上的紅色按鈕是緊急停止按鈕，工作過程中發(fā)生異常時，按下此按鈕。工作結(jié)束后，應及時切斷電源。按規(guī)定保養(yǎng)設備。3、安全注意要求：油缸不允許超載和超行程使用。液壓系統(tǒng)較高壓力不得超過16Mpa。操作工不允許調(diào)整溢流閥。設備啟動后，操作工不得擅自離開操作臺，如需離開，應關閉設備，并切斷電源。從事設備調(diào)試、維修和保養(yǎng)時，必須切斷電源，使設備完全處于斷電狀態(tài)，并在電控柜上‘有人作業(yè)，禁止合閘’的警示牌，并設專人監(jiān)護。完畢后，須經(jīng)確認一切正常，方可摘除警示牌，重新啟動設備。封頭的調(diào)校方式需要遵守相關的標準。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京SF雙層油罐封頭制作廠,封頭" src="https://tyunfile.71360.com/UploadFile/wxgxft/637393177944636134/5518321.png"></div><p style="text-indent:25px">模壓技能是封頭制作材料加工技能中較早實現(xiàn)實用化的封頭制作技能。封頭車間中模壓一般采用的是脈沖封頭制作，能量密度較高，時刻較短，可以加工1μm的封頭，特別適用于加工具有必定視點和材料較薄的封頭，還適合加工強度硬度較高或較脆較軟材料的零件上的深封頭和微封頭。在現(xiàn)在模壓技能的開展下，現(xiàn)在的模壓機實現(xiàn)了自動化的操作，在封頭行業(yè)上面的使用改變了傳統(tǒng)封頭技能的加工辦法，實現(xiàn)了無人操作，提供了大量的出產(chǎn)效率，實現(xiàn)全程全自動的操作，帶動了封頭經(jīng)濟的開展，在打孔作用方面提升了一個層次，加工作用赫然明顯。封頭是一種由旋轉(zhuǎn)橢圓球面和圓筒形直段兩部分組成的封頭。南通球冠形封頭加工廠</p><p style="text-indent:25px">關于低溫壓力容器用橢圓封頭及需進行疲勞剖析規(guī)劃的橢圓封頭，不得選用硬印作為資料的承認符號和焊工標志。南京SF雙層油罐封頭制作廠</p><p style="text-indent:25px">鈦板不銹鋼封頭屬于不銹鋼封頭的一種，主要是用來對不銹鋼管道進行密封的零件。在它制造的過程中，有一個工藝程序是需要謹慎再謹慎的，那是熱處理工藝。在對鈦板不銹鋼封頭進行熱處理的過程中是比較容易出現(xiàn)熱應力的，原因是加熱和冷卻的過程中，表層和心部的冷卻速度和時間的不一致，有溫差存在。另外還比較容易出現(xiàn)組織應力，主要是由于組織的變化即奧氏體向馬氏體轉(zhuǎn)變時，因比容的增大會伴隨工件體積的膨脹，工件各部位先后相變，造成體積長大不一致。南京SF雙層油罐封頭制作廠</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，讓匠心彌散在每個細節(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。公司注重以質(zhì)量為中心，以服務為理念，秉持誠信為本的理念，打造機械及行業(yè)設備良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3016225.html</p></div></div></div></div></div><div id="ptpxfd5" class="page-right twoColRt"><div id="hfvthv5" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="lzx5n33" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="55rxndr" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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