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href="http://www.cdcfah.com/cp/third-famenti_diefakna/">蝶閥</a>?廣東真空精煉真空管道蝶閥品牌頂耕國際貿(mào)易供應</p><div id="j8z2ynj" class="leftbox clearfix"><h1>廣東真空精煉真空管道蝶閥品牌頂耕國際貿(mào)易供應</h1><div id="vaco3ln" class="proBig"><div id="aprtaw8" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496894532/5616452.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2atk23p" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496894532/5616452.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="dnfxefc" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>廣東真空精煉真空管道蝶閥品牌</p><p><span>***更新：</span>2020-05-27 07:29:47</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="dnkhjls" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-61637356</p><p><span>地址: </span>大葉公路5225號1幢2370室</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="fuwi8b8" class="page-proshow02"><p class="title">詳細說明</p><div id="3bnu2kz" class="box"><p><p> 鋼制閥門的密封面一般采用堆焊方法制造。用于閥門堆焊的材料按合金類型分為4大類,即鈷基合金、鎳基合金、鐵基合金和銅基合金。這些合金材料被制成電焊條、焊絲(含藥芯焊絲)、焊劑(含過渡合金型焊劑)和合金粉末等,采用手工電弧焊、氧乙炔焰焊、鎢極氬弧焊、埋弧自動焊和等離子弧焊等方法堆焊。選用閥門密封面堆焊材料一般根據(jù)閥門的使用溫度、工作壓力和介質(zhì)的腐蝕性,或閥門的類型、密封面結(jié)構(gòu)形式、密封比壓和許用比壓,或企業(yè)生產(chǎn)制造條件、設備加工能力和堆焊技術(shù)能力及用戶要求。還應采用優(yōu)化設計,在滿足閥門使用性能的條件下,選用價格低、生產(chǎn)工藝簡單和生產(chǎn)效率高的密封面材料。用于閥門密封面堆焊的材料有的只有一種形態(tài),或電焊條或焊絲或合金粉末,因而只能采用一種堆焊方法。有的制成電焊條、焊絲或合金粉末多種形態(tài),如stellitel6合金,既有電焊條(D802)，廣東真空精煉真空管道蝶閥品牌,又有焊絲(HS111)和合金粉末(PT2102),則可采用手工電弧焊、氧2乙炔焰焊、鎢極氬弧焊、送絲等離子弧焊和粉末等離子弧焊等多種方法堆焊。在選擇閥門密封面堆焊材料時，廣東真空精煉真空管道蝶閥品牌,應兼顧選擇本企業(yè)技術(shù)成熟，廣東真空精煉真空管道蝶閥品牌、工藝簡單、生產(chǎn)效率高的堆焊方法,從而在密封面堆焊制造上保證實現(xiàn)其使用性能。密封面是閥門的關(guān)鍵部位。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東真空精煉真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496894532/5616452.png"></div><p> (1)閥體和閥蓋的質(zhì)量，特別是在鍛造或鑄造時應避免其產(chǎn)生折疊、夾渣、氣孔、組織疏散、隱裂紋等缺點和成分不均。 </p> <p> <br /> </p> <p> (2)閥桿和閥體連接處零件等的加工質(zhì)量，特別是閥桿和填料函的粗糙度、閥桿的直線度、閥蓋填料函孔的垂直度和加工的精度。 </p> <p> <br /> </p> <p> (3)閥門填料函的結(jié)構(gòu)選擇，由于閥桿處的密封為動密封，閥桿在轉(zhuǎn)動或滑動過程中填料容易磨損，需選用特制的低泄漏填料密封及填料密封組合，并嚴格控制填料與閥桿的間隙，填料與填料箱的間隙。 </p> <p> <br /> </p> <p> 綜上所述，閥門類型的選用除了滿足工藝條件和標準規(guī)范外，還應充分考慮各種使用工況，工程設計中應力求選用的閥門密封等級滿足安全、合理和經(jīng)濟的原則。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東真空精煉真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737896250000/4170655.jpg"></div><p> 它擔任閥門密封直接接觸的面。那閥門密封材料都有哪些呢，我們知道閥門密封圈材料有金屬和非金屬兩大類。閥門密封材料是閥門密封的重要組成部分，它擔任閥門密封直接接觸的面。那閥門密封材料都有哪些呢，我們知道閥門密封圈材料有金屬和非金屬兩大類。下面就簡單介紹一下各類密封材料的使用條件，以及常用的閥門類型1合成橡膠合成橡膠的耐油、耐溫、耐腐蝕等綜合性能優(yōu)于天然橡膠。一般合成橡膠的使用溫度t≤150℃，天然橡膠t≤60℃，橡膠用于公稱壓力PN≤1MPa的截止閥、閘閥、隔膜閥、蝶閥、止回閥、夾管閥等閥門的密封。2尼龍尼龍具有摩擦系數(shù)小、耐腐蝕性好等特點。尼龍多用于溫度t≤90℃、公稱壓力PN≤32MPa的球閥、截止閥等。3聚四氟乙烯聚四氟乙烯多用于溫度t≤232℃、公稱壓力PN≤、閘閥、球閥等。4鑄鐵鑄鐵用于溫度t≤100℃、公稱壓力PN≤、煤氣和油類用的閘閥、截止閥、旋塞閥等。5巴氏合金巴氏合金用于溫度t-70~150℃、公稱壓力PN≤。6銅合金銅合金常用材料有6-6-3錫青銅和58-2-2錳黃銅等。銅合金耐磨性好，適用于溫度t≤200℃、公稱壓力PN≤，常用于閘閥、截止閥、止回閥、旋塞閥等。7鉻不銹鋼鉻不銹鋼常用牌號有2Cr13、3Cr13經(jīng)調(diào)質(zhì)處理，耐腐蝕性能好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東真空精煉真空管道蝶閥品牌" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749327031250/8086057.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/55087.html</p></div></div></div></div></div><div id="hro283c" class="page-right twoColRt"><div id="oyacugn" class="box01 margin10 clearfix"><h3><a 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