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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="nrtqs7p" class="twoCol"><div id="cb7y2m8" 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-_jxjxysb/">機械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_zzjrclsbfg/">鑄造及熱處理設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-zzjrclsbfg_zzsbev/">鑄造設(shè)備</a>?揚州專業(yè)V法鑄造企業(yè) 歡迎咨詢江陰華天科技供應(yīng)</p><div id="edprdke" class="leftbox clearfix"><h1>揚州專業(yè)V法鑄造企業(yè) 歡迎咨詢江陰華天科技供應(yīng)</h1><div id="bqsuw8h" class="proBig"><div id="vf2blhd" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889636621094/6553892.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xmtvcev" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889636621094/6553892.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rqnp7l4" 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>揚州專業(yè)V法鑄造企業(yè),V法鑄造</p><p><span>***更新：</span>2020-09-09 07:07:40</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="tx7dfw7" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">江陰華天科技開發(fā)有限公司</a></p><p><span>聯(lián)系人：</span>謝經(jīng)理</p><p><span>郵箱: </span>273371292@qq.com</p><p><span>電話: </span>13961688156</p><p><span>傳真: </span>0510_</p><p><span>網(wǎng)址: </span>http://www.jy-dannier.com</p><p><span>手機: </span>0510-86273026</p><p><span>地址: </span>月城鎮(zhèn)月翔路17號</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="jv73ixo" class="page-proshow02"><p class="title">詳細說明</p><div id="m8mjvnz" class="box"><p><p style="text-indent:25px">覆膜架帶動EVA薄膜下降過程中與空氣產(chǎn)生的對流運動必然形成對整張薄膜的浮力，進而造成薄膜的向上運動，并使薄膜自身產(chǎn)生一定的張力，即薄膜內(nèi)部區(qū)域?qū)ν獠繀^(qū)域的拉力作用（見圖1）。根據(jù)空氣動力學(xué)原理，對流速度越快，也就是覆膜架下降的速度越快，這種浮力越大，整張薄膜向上浮動的速度也就越大，同時，對薄膜的拉伸作用也越明顯。這種浮力不但會使EVA薄膜容易上浮并接觸到紅熱的電熱絲或者電熱管燙破，也有可能使熱態(tài)強度很低的薄膜在拉力作用下直接拉裂；采用數(shù)學(xué)模型去定量的給出覆膜框下行速度的參考值是很困難的，揚州專業(yè)V法鑄造企業(yè)，揚州專業(yè)V法鑄造企業(yè)，因為柔性極強的薄膜在覆膜框帶動下運動的受力狀態(tài)極其復(fù)雜，直接的生產(chǎn)調(diào)試控制速度過快是比較現(xiàn)實的辦法。值得注意的是，覆膜架下行過程中加速度太大會造成EVA薄膜強烈顫動，這往往源于氣動控制裝置穩(wěn)定性太差、速度變化過分強烈。這種不必要的震蕩對于熱態(tài)下強度很低的薄膜也是非常危險的，揚州專業(yè)V法鑄造企業(yè)。圖2為某生產(chǎn)現(xiàn)場因為覆膜框震蕩造成EVA薄膜破裂的現(xiàn)象。除塵濾氣罐采用介質(zhì)分離，抽吸進來的氣體與水混合。揚州專業(yè)V法鑄造企業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州專業(yè)V法鑄造企業(yè),V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889636621094/6553892.png"></div><p> 隨著V法鑄造向復(fù)雜結(jié)構(gòu)鑄件的延伸和拓展，原有的一維震實臺顯然已經(jīng)難以保障橫向縱深部位的填充緊實（見圖5），必須采用更為可靠的三維震實臺。但是部分企業(yè)始終意識不到這個問題，而因為這個問題而出現(xiàn)的粘砂或者尺寸失準(zhǔn)問題比比皆是。 </p> <p> <p> 起模機構(gòu)對鑄型質(zhì)量的影響 </p> <p> V法造型過程中，EVA薄膜與模具之間有一定的粘附力存在。再加上砂型的擠壓作用，使得起模過程中薄膜與模具之間存在明顯的摩擦。在提倡V法鑄造工藝少無拔模斜度的要求下，無疑對起模機構(gòu)的平穩(wěn)性有較為嚴(yán)格的要求。 </p> </p> <p> <br /> 揚州專業(yè)V法鑄造企業(yè)近年來，V法鑄造持續(xù)升溫。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州專業(yè)V法鑄造企業(yè),V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889931113282/8104857.png"></div><p style="text-indent:25px">這就是因為局部氣體難以迅速逃逸造成局部砂型強度下降的結(jié)果。有人提出低負(fù)壓大流量的說法，明確顯示出負(fù)壓很低但是整個生產(chǎn)過程非常安全。其實這就是砂箱結(jié)構(gòu)布置合理的效果。抽氣面積越大，抽氣位置越均勻越合理，泄入氣體排出越快，真空及鑄型強度穩(wěn)定性越好，塌箱危險性也越低；另有觀點認(rèn)為，只要整個鑄型處在一個負(fù)壓場下，各點的強度應(yīng)該是一樣的。實則不然。實踐表明，同一個鑄型，各點的強度是有差異的。如對于一個*有四壁抽氣的砂箱來說，鑄型的強度往往由砂箱四周向中心逐漸減弱的趨勢，而砂箱輪廓越大，這種趨勢越明顯。</p><p> 首先，模樣作成空心，表面開設(shè)抽氣孔（抽氣孔直徑一般為0.5～2.5 mm），形成抽氣室，模樣盡量避免尖銳的棱角，較大的模樣內(nèi)部設(shè)置加強筋，以保證在抽氣負(fù)壓作用下，模樣不破裂或變形；其次，薄膜和模樣之間較光滑，模樣撥模斜度可適當(dāng)減?。?</p> <p> 木模表面不宜涂刷漆片溶液或耐溫低于60～70℃的其它油漆，否則將烘熱的塑料薄膜覆上后會出現(xiàn)粘膜現(xiàn)象，影響拔模。 </p> <p> 模樣的制作應(yīng)充分認(rèn)識V法鑄造抽真空的特點及保證吸膜成型性的需要，大平板及分型面處要保證足夠的強度和順暢的通氣性，利用定位銷或砂胎等使模樣定位要準(zhǔn)確。為了穩(wěn)定系統(tǒng)壓力，避免澆注時出現(xiàn)塌箱，應(yīng)加大穩(wěn)壓罐容積。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州專業(yè)V法鑄造企業(yè),V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889431923828/6575353.png"></div><p> 關(guān)于V法鑄造工藝優(yōu)勢的討論國外典型耐磨鑄件生產(chǎn)企業(yè)實踐證明V法鑄造工藝在耐磨鑄件的生產(chǎn)上是成功的，也是有優(yōu)勢的。具體優(yōu)勢如下： </p> <p> 1產(chǎn)品質(zhì)量方面 </p> <p> V法鑄造鑄件表面質(zhì)量好，光潔度高；產(chǎn)品尺寸精度高，尤其是中大型鑄件批量化生產(chǎn)條件下的尺寸穩(wěn)定性更具優(yōu)勢；產(chǎn)品輪廓清晰，可實現(xiàn)少無拔模斜度；鋼水流動性好，可實現(xiàn)低溫度澆注，作為提高鑄件晶粒度等級，提高耐磨性的潛在手段之一； </p> <p> 2生產(chǎn)管理方面 </p> <p> V法鑄造工藝的成本更低，單位鑄件重量能耗和輔材消耗低，勞動強度低；采用干砂造型無需混砂等過程，設(shè)備投資少，砂處理簡單，舊砂回用率較高，不存在廢砂廢水等污染情況；模具磨損小，壽命高；高自動化程度生產(chǎn)線生產(chǎn)效率高，人均產(chǎn)量高；分析砂溫對砂處理設(shè)備設(shè)計和鑄件質(zhì)量控制的影響，從而科學(xué)和適宜地進行砂溫控制。揚州專業(yè)V法鑄造企業(yè)</p><p style="text-indent:25px">水環(huán)式真空泵依靠水環(huán)實現(xiàn)密封，各部件的公差較大，不怕干砂粉塵。揚州專業(yè)V法鑄造企業(yè)</p><p style="text-indent:25px">金屬軟管抽氣和管式抽氣式復(fù)合砂箱。在V法鑄造實踐中，針對以上2種砂箱存在的各種問題，國內(nèi)多數(shù)廠家采用復(fù)合砂箱，其箱壁用10mm鋼板焊接，用金屬軟管抽氣。砂箱結(jié)構(gòu)簡單，單層壁構(gòu)成，可制作尺寸較大的砂箱。為避免塌箱引起鑄型沉降和變形，設(shè)置較密箱帶。金屬管兩端與固定在砂箱上壁的真空接頭相連，抽氣時，通過軟管的各活動節(jié)的縫隙來抽吸砂粒間的空氣，同時又能阻止細砂及粉塵被吸走。因軟管間隙較大易吸人砂粒和粉塵，真空管路系統(tǒng)必須配有濾砂和水浴裝置。揚州專業(yè)V法鑄造企業(yè)</p><p style="text-indent:25px">江陰華天科技開發(fā)有限公司是一家環(huán)保設(shè)備、氣力輸送設(shè)備、V法鑄造機械設(shè)備、消失模設(shè)備、樹脂砂設(shè)備、其他通用機械設(shè)備的技術(shù)開發(fā)、設(shè)計、制造、加工、銷售、安裝、調(diào)試、維修。產(chǎn)品與服務(wù)用于鋼鐵、有色、煤化工、石油化工、鐵路、食品、火電、鑄造等行業(yè)。的公司，致力于發(fā)展為創(chuàng)新務(wù)實、誠實可信的企業(yè)。公司自創(chuàng)立以來，投身于氣力輸送，V法鑄造，輸送機械，環(huán)保設(shè)備，是機械及行業(yè)設(shè)備的主力軍。江陰華天科技致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。江陰華天科技始終關(guān)注自身，在風(fēng)云變化的時代，對自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使江陰華天科技在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1213699.html</p></div></div></div></div></div><div id="qac82v4" class="page-right twoColRt"><div id="8sp4fgn" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="jy32kwn" 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(yīng)" class="vcenter" 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