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src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889644755860/7471982.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="888hdfh" 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>南京真空V法鑄造原理,V法鑄造</p><p><span>***更新：</span>2020-12-17 04:12:32</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="qkmognp" 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="7zo2meb" class="page-proshow02"><p class="title">詳細說明</p><div id="kzrj8p8" class="box"><p><p style="text-indent:25px">對于一些多筋板或具有相當高垂直面的鑄件而言，這種擦傷鑄型的現(xiàn)象尤為普遍。而個別自動化程度很高的機械手，運轉(zhuǎn)穩(wěn)定性差，末端柔性不足，在運轉(zhuǎn)過程中產(chǎn)生震蕩或者難以急停，甚至不能保證**起碼的定位及真空對接精度，直接影響鑄型在起模翻轉(zhuǎn)等過程中的安全性，南京真空V法鑄造原理。隨著V法成套裝備生產(chǎn)線自動化和機械化水平的提升，對起模機構(gòu)的使用要求越來越高。這就需要我們在這些關(guān)鍵的造型設(shè)備方面，提高設(shè)計，南京真空V法鑄造原理，制造，安裝的精度和可靠性，以充分保障造型質(zhì)量和鑄型安全，南京真空V法鑄造原理。固定式冷卻沸騰床采用水循環(huán)冷卻，水泵將冷水輸送至沸騰床內(nèi)冷卻水管中與熱砂充分地熱交換達到冷卻目的。南京真空V法鑄造原理</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京真空V法鑄造原理,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889644755860/7471982.png"></div><p> V法鑄造工藝設(shè)計簡介 </p> <p> 對于V法鑄造工藝的設(shè)計，不是只完成單個鑄件的工藝設(shè)計，應該是先完成單個鑄件的澆冒口系統(tǒng)、砂芯設(shè)計、透氣設(shè)計、冷鐵等的設(shè)計，然后，根據(jù)工廠現(xiàn)有V法裝備的實際和生產(chǎn)效率等進行模具的工藝布置設(shè)計，合理布置，重新進行澆注系統(tǒng)的優(yōu)化設(shè)計。之后進行模型體和型板上的抽氣塞設(shè)計(大小、位置、間距等設(shè)計)，抽氣塞的設(shè)計必須自行進行，不能交由模具設(shè)計和制作單位進行，抽氣塞設(shè)計是否合理對后續(xù)生產(chǎn)中的覆膜效果影響很大，同時影響生產(chǎn)中抽氣塞破損、堵塞后的更換。上述工作完成之后開始進行砂箱的設(shè)計工作，抽氣布局要合理，尤其是澆口和冒口附近，由于薄膜氣化和涂層受熱嚴重，真空泄漏較多，應在該部位增大真空抽氣量，保證該部位的負壓滿足實際需要。在進行砂箱設(shè)計時，不能只考慮真空度是否滿足，砂箱的負壓室容積必須保證足夠的抽氣量，否則，即便是真空度足夠，抽氣量不足同樣造成鑄型緊實率不足、砂型硬度不夠，澆注過程中甚至會由此產(chǎn)生砂型垮塌。南通專業(yè)V法鑄造設(shè)備廠正確選用塑料薄膜，型砂，真空泵﹑負壓度、振動時間和結(jié)構(gòu)合理的砂箱是獲得質(zhì)量V法鑄件的基礎(chǔ)；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京真空V法鑄造原理,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889867304688/5688127.png"></div><p> V法具有與傳統(tǒng)砂型鑄造無法比擬的優(yōu)勢，其具體表現(xiàn)在以下七個方面： </p> <p> 造型易起模，模具少無磨損，金屬模具壽命長，模具可用木質(zhì)材料； </p> <p> 鑄件尺寸精度高，輪廓清晰，鑄鐵件粗糙度值達Ra18—25μm。叉車鑄鐵配重是V法鑄造產(chǎn)品的典型**。安徽合力叉車集團合肥鑄鍛廠生產(chǎn)的叉車配重，曾獲2002年第四屆北京國際鑄造工業(yè)展覽會鑄件一等獎。世界上叉車和其他工程車所需配重和平衡塊幾乎都是V法鑄造生產(chǎn)的；(3) V法干砂保溫效果和真空抽吸作用都能提高金屬液的流動性。試驗表明：V法鑄造和濕型鑄造相比，金屬液流動性可提高27％。因此V法鑄造不僅能生產(chǎn)厚壁鑄件，也能生產(chǎn)薄壁鑄件。如南京東陶（TOTO）有限公司引進日本新東鑄造生產(chǎn)線，生產(chǎn)***鑄鐵浴缸，比較大浴缸尺寸為1829mm×1067mm×650mm，鑄件重達180kg，壁厚7mm，如圖2所示。圖3 天津英昌鋼琴鑄件有限公司生產(chǎn)的鋼琴鑄鐵弦架也是V法鑄造薄壁件的典型產(chǎn)品。 </p><p> 重視系統(tǒng)化工程的設(shè)計 </p> <p> 耐磨鑄造車間的建設(shè)是一個系統(tǒng)工程，除了生產(chǎn)設(shè)備本身外，車間布局物流設(shè)計，原輔材料的配套，熱處理系統(tǒng)的配套，機加工設(shè)備的配套等都要作為系統(tǒng)的一部分考慮。 </p> <p> 以砂箱的周轉(zhuǎn)為例，耐磨鑄件由于保溫冷卻時間長，在一定程度上限制了砂箱的流轉(zhuǎn)速度，企業(yè)訂購大量砂箱不僅**增加了企業(yè)成本，而且造成管理使用上的困難。可通過采用建設(shè)冷卻立體庫，設(shè)計冷卻托盤的方式加快砂箱流轉(zhuǎn)，同時節(jié)約生產(chǎn)場地。標準化托盤的設(shè)計和制作，滿足叉車運輸條件，并不額外增加過多的勞動力，實現(xiàn)了工藝生產(chǎn)的要求，降低了設(shè)備投資成本，同時提高的系統(tǒng)運行效率。 V法鑄造是設(shè)備﹑工藝和原輔材料相互配合協(xié)調(diào)平衡的有機結(jié)合，要全盤考慮協(xié)調(diào)的系統(tǒng)工程。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南京真空V法鑄造原理,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293890362187500/7879725.png"></div><p style="text-indent:25px">V法造型過程中，震動是獲得高緊實度砂型的重要環(huán)節(jié)。V法鑄型的硬度和強度，不僅與我們常規(guī)理解中的砂箱的真空度有關(guān)系，震實效果也是很重要的一方面（如圖4所示）。在震實不夠的情況下，有時候通過高的真空度，可以獲得較高的鑄型硬度，但這只是一種假象，砂型強度往往是不足的。在砂型抽真空，翻轉(zhuǎn)，轉(zhuǎn)運，合箱，澆注等過程中產(chǎn)生的波動又會造成鑄型內(nèi)砂子形位的重新排布進而引起鑄型強度，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)量問題。目前在震實臺設(shè)計中，對于振幅，震動頻率，激振力及如何配置振動電機等問題往往模棱兩可，缺乏基本的核算依據(jù)。而鑄鋼件多采用開放式澆注系統(tǒng)，其澆道截面積比例為F直∶F橫∶F內(nèi)＝1∶(1．2～2)∶(1．2～2) ；泰州先進V法鑄造原理</p><p style="text-indent:25px">利用短流程工藝來澆注V法鑄造中的特大件如大型配重等也引起了越來越多人的濃厚興趣。南京真空V法鑄造原理</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。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。南京真空V法鑄造原理</p><p style="text-indent:25px">江陰華天科技開發(fā)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。江陰華天科技致力于為客戶提供良好的氣力輸送，V法鑄造，輸送機械，環(huán)保設(shè)備，一切以用戶需求為中心，深受廣大客戶的歡迎。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。江陰華天科技秉承“客戶為尊、服務為榮、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/2436844.html</p></div></div></div></div></div><div id="nc8czwd" class="page-right twoColRt"><div 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