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class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="nwskmgi" class="twoCol"><div id="mqxprta" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機(jī)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>?無(wú)錫真空密封V法鑄造裝備誠(chéng)信為本江陰華天科技供應(yīng)</p><div id="aj2fuwt" class="leftbox clearfix"><h1>無(wú)錫真空密封V法鑄造裝備誠(chéng)信為本江陰華天科技供應(yīng)</h1><div id="8z2bifm" class="proBig"><div id="37surtv" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889431923828/6575353.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="cwo8p8v" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889431923828/6575353.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3dnczb2" 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>無(wú)錫真空密封V法鑄造裝備,V法鑄造</p><p><span>***更新：</span>2020-12-07 05:13:55</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="bvn7kjq" 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(jī): </span>0510-86273026</p><p><span>地址: </span>月城鎮(zhèn)月翔路17號(hào)</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="d2jqi2a" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="c8yvxo2" class="box"><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(qiáng)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(huì)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(shí)V法鑄造抽真空的特點(diǎn)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(qiáng)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，無(wú)錫真空密封V法鑄造裝備。但澆注時(shí)負(fù)壓度的變化大，無(wú)錫真空密封V法鑄造裝備，澆注瞬間，無(wú)錫真空密封V法鑄造裝備，負(fù)壓度下降快，澆注完畢后鑄型能恢復(fù)并保持較高的負(fù)壓度。無(wú)錫真空密封V法鑄造裝備</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無(wú)錫真空密封V法鑄造裝備,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889431923828/6575353.png"></div><p style="text-indent:25px">覆膜架帶動(dòng)EVA薄膜下降過(guò)程中與空氣產(chǎn)生的對(duì)流運(yùn)動(dòng)必然形成對(duì)整張薄膜的浮力，進(jìn)而造成薄膜的向上運(yùn)動(dòng)，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(dòng)力學(xué)原理，對(duì)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(dòng)的速度也就越大，同時(shí)，對(duì)薄膜的拉伸作用也越明顯。這種浮力不但會(huì)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(qiáng)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，因?yàn)槿嵝詷O強(qiáng)的薄膜在覆膜框帶動(dòng)下運(yùn)動(dòng)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(guò)快是比較現(xiàn)實(shí)的辦法。值得注意的是，覆膜架下行過(guò)程中加速度太大會(huì)造成EVA薄膜強(qiáng)烈顫動(dòng)，這往往源于氣動(dòng)控制裝置穩(wěn)定性太差、速度變化過(guò)分強(qiáng)烈。這種不必要的震蕩對(duì)于熱態(tài)下強(qiáng)度很低的薄膜也是非常危險(xiǎn)的。圖2為某生產(chǎn)現(xiàn)場(chǎng)因?yàn)楦材た蛘鹗幵斐蒃VA薄膜破裂的現(xiàn)象。無(wú)錫真空密封V法鑄造裝備鑄型都必須保持一定的真空度以固定松散的干砂，確保鑄型有足夠的強(qiáng)度和剛度澆注時(shí)防止鑄型坍塌和鑄件變形。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無(wú)錫真空密封V法鑄造裝備,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889762324219/6573071.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(shí)臺(tái)顯然已經(jīng)難以保障橫向縱深部位的填充緊實(shí)（見圖5），必須采用更為可靠的三維震實(shí)臺(tái)。但是部分企業(yè)始終意識(shí)不到這個(gè)問(wèn)題，而因?yàn)檫@個(gè)問(wèn)題而出現(xiàn)的粘砂或者尺寸失準(zhǔn)問(wèn)題比比皆是。 </p> <p> <p> 起模機(jī)構(gòu)對(duì)鑄型質(zhì)量的影響 </p> <p> V法造型過(guò)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(guò)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(wú)拔模斜度的要求下，無(wú)疑對(duì)起模機(jī)構(gòu)的平穩(wěn)性有較為嚴(yán)格的要求。 </p> </p> <p> <br /> </p><p> 環(huán)境保護(hù)方面 </p> <p> V法鑄造工藝不產(chǎn)生廢棄物污染，采用合理有效的除塵手段即可收集鑄造過(guò)程中產(chǎn)生的粉塵，排放量可嚴(yán)格達(dá)到國(guó)家環(huán)保要求。 </p> <p> 從國(guó)內(nèi)大部分耐磨企業(yè)的生產(chǎn)情況來(lái)看，以上優(yōu)勢(shì)并沒有完全在生產(chǎn)中發(fā)揮出來(lái)，這與我們對(duì)V法鑄造工藝的認(rèn)識(shí)欠缺，對(duì)基礎(chǔ)研究的投入以及對(duì)設(shè)備輔材的配套研究不足有很大關(guān)系。 </p> <p> 4技術(shù)發(fā)展水平方面 </p> <p> V法鑄造在國(guó)內(nèi)發(fā)展的時(shí)間有限，局限于鑄造設(shè)備企業(yè)的研發(fā)創(chuàng)新能力，V法鑄造生產(chǎn)線形式單一，難以針對(duì)特殊鑄件開發(fā)**裝備，這也是V法鑄造在國(guó)內(nèi)耐磨件生產(chǎn)方面受到局限的問(wèn)題之一。目前國(guó)內(nèi)多數(shù)生產(chǎn)線仍然采用傳統(tǒng)的布局形式，生產(chǎn)線效率低，控制水平差異導(dǎo)致生產(chǎn)過(guò)程不穩(wěn)定，產(chǎn)品質(zhì)量難以達(dá)到V法應(yīng)有的質(zhì)量水平，同時(shí)行業(yè)內(nèi)又缺乏高水平的先進(jìn)V法鑄造生產(chǎn)線及相關(guān)裝備企業(yè)。干砂造型抽真空后減小了砂與砂之間的間隙，增加了砂與砂之間的摩擦力，提高砂強(qiáng)度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無(wú)錫真空密封V法鑄造裝備,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889985097657/1146380.png"></div><p style="text-indent:25px">V法造型過(guò)程中，震動(dòng)是獲得高緊實(shí)度砂型的重要環(huán)節(jié)。V法鑄型的硬度和強(qiáng)度，不僅與我們常規(guī)理解中的砂箱的真空度有關(guān)系，震實(shí)效果也是很重要的一方面（如圖4所示）。在震實(shí)不夠的情況下，有時(shí)候通過(guò)高的真空度，可以獲得較高的鑄型硬度，但這只是一種假象，砂型強(qiáng)度往往是不足的。在砂型抽真空，翻轉(zhuǎn)，轉(zhuǎn)運(yùn)，合箱，澆注等過(guò)程中產(chǎn)生的波動(dòng)又會(huì)造成鑄型內(nèi)砂子形位的重新排布進(jìn)而引起鑄型強(qiáng)度，結(jié)構(gòu)尺寸等的變化。而這些變化反映到鑄件上，則表現(xiàn)出鑄件尺寸或者重量精度超差等質(zhì)量問(wèn)題。目前在震實(shí)臺(tái)設(shè)計(jì)中，對(duì)于振幅，震動(dòng)頻率，激振力及如何配置振動(dòng)電機(jī)等問(wèn)題往往模棱兩可，缺乏基本的核算依據(jù)。正確選擇真空泵以及合理的真空系統(tǒng)是保證V法鑄型穩(wěn)定負(fù)壓度的前提。泰州密封V法鑄造裝備</p><p style="text-indent:25px">近年來(lái)，V法鑄造持續(xù)升溫。無(wú)錫真空密封V法鑄造裝備</p><p> 耐磨鑄件是采礦、冶金、建材、電力、石化、機(jī)械、交通等重要工業(yè)領(lǐng)域的消耗品，在工業(yè)生產(chǎn)中占有重要地位。據(jù)不完全統(tǒng)計(jì), 國(guó)內(nèi)年消耗量超過(guò)200 萬(wàn)t , 目前已有近千家耐磨鑄件生產(chǎn)企業(yè), 年生產(chǎn)能力達(dá)到500 萬(wàn)噸以上，鑄造工藝多種多樣。 </p> <p> 耐磨鑄件工藝現(xiàn)狀 </p> <p> 目前，耐磨鑄件普遍采用水玻璃砂，堿酚醛樹脂砂鑄造工藝，也有部分采用消失模鑄造工藝。這些工藝靈活穩(wěn)定，工藝成熟度較相對(duì)較高，能夠?qū)崿F(xiàn)穩(wěn)定批量化生產(chǎn)，是耐磨鑄件生產(chǎn)的傳統(tǒng)工藝。但尤其是水玻璃砂、樹脂砂工藝同時(shí)存在著勞動(dòng)強(qiáng)度大，人均生產(chǎn)效率低的弊端，在環(huán)保問(wèn)題日益嚴(yán)峻、勞動(dòng)力成本越來(lái)越高的***，傳統(tǒng)工藝面臨著較大的壓力。 </p> <p> 結(jié)合產(chǎn)業(yè)升級(jí)的趨勢(shì)，國(guó)內(nèi)部分企業(yè)探索V法鑄造工藝生產(chǎn)耐磨鑄件，產(chǎn)品類型以軋臼壁、破碎壁、齒板、錘頭等中大型鑄件為主，所生產(chǎn)的鑄件具有表面質(zhì)量好，尺寸精度高的優(yōu)勢(shì)，同時(shí)造型落砂等工序勞動(dòng)強(qiáng)度低，具有相對(duì)比較好的環(huán)保優(yōu)勢(shì)。無(wú)錫真空密封V法鑄造裝備</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(jī)械設(shè)備、消失模設(shè)備、樹脂砂設(shè)備、其他通用機(jī)械設(shè)備的技術(shù)開發(fā)、設(shè)計(jì)、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(shí)、誠(chéng)實(shí)可信的企業(yè)。公司自創(chuàng)立以來(lái)，投身于氣力輸送，V法鑄造，輸送機(jī)械，環(huán)保設(shè)備，是機(jī)械及行業(yè)設(shè)備的主力軍。江陰華天科技始終以本分踏實(shí)的精神和必勝的信念，影響并帶動(dòng)團(tuán)隊(duì)取得成功。江陰華天科技創(chuàng)始人謝田，始終關(guān)注客戶，創(chuàng)新科技，竭誠(chéng)為客戶提供良好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2299732.html</p></div></div></div></div></div><div id="y72bikw" class="page-right twoColRt"><div id="vkmwy3h" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="p4jlivc" 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)" 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