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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="oif7wyf" 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>泰州先進(jìn)V法鑄造裝備,V法鑄造</p><p><span>***更新：</span>2020-11-17 07:15:23</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="wf7clza" 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="xgdn2iu" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="38jqnp8" class="box"><p><p style="text-indent:25px">為了保證在足夠短的時(shí)間內(nèi)覆膜完成而又不至于因速度過快對(duì)EVA薄膜造成不必要的影響，覆膜行程高度的設(shè)計(jì)也是很重要的一方面。而覆膜行程高度過高（見圖3），泰州先進(jìn)V法鑄造裝備，泰州先進(jìn)V法鑄造裝備，也正是是造成覆膜下降時(shí)間過長的主要原因。當(dāng)然，覆膜行程高度，不僅要考慮覆膜時(shí)間，也要考慮模具的高度，甚至有時(shí)候也要考慮完成其他工序時(shí)工人的作業(yè)空間。這需要根據(jù)具體的鑄件產(chǎn)品和其他工裝設(shè)備的因素去綜合衡量，泰州先進(jìn)V法鑄造裝備。但是，保證覆膜框在5s內(nèi)下行至模具是明確的，也是合理的。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(jìn)V法鑄造裝備</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州先進(jìn)V法鑄造裝備,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889636621094/6553892.png"></div><p style="text-indent:25px">V法鑄造一般選擇用熱塑性簿膜，要求成型性好，易涂（刷）涂料，方向性小，熱塑應(yīng)力小，對(duì)熱量不敏感，燃燒時(shí)發(fā)氣量小，不產(chǎn)生有害氣體，質(zhì)優(yōu)價(jià)廉。筆者采用EVA薄膜作為V法鑄造塑料簿膜。覆膜成型時(shí)，簿膜置于加熱器下150～200mm,加熱溫度為80～120℃，加熱時(shí)間一般為20～50s。簿膜加熱至鏡面狀時(shí)應(yīng)迅速將其落下覆膜，覆膜后，須檢查簿膜是否與模樣表面緊密貼緊，是否有無孔洞或破損。對(duì)于某些難以吸膜成型的部位，采取局部強(qiáng)化抽真空措施，調(diào)節(jié)抽氣速度實(shí)現(xiàn)覆膜成型。泰州先進(jìn)V法鑄造裝備合理的澆注系統(tǒng)及澆注速度是防止產(chǎn)生脹砂、塌箱、增厚等缺點(diǎn)的關(guān)鍵措施；</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州先進(jìn)V法鑄造裝備,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889732578125/1173701.png"></div><p> 重視工藝試驗(yàn)和工藝過程的積累 </p> <p> 通過工藝試驗(yàn)過程的開展，理解耐磨鑄件V法鑄造工藝路線，熟知工藝控制要點(diǎn)及比較好工藝參數(shù)，對(duì)于V法鑄造項(xiàng)目的順利開展具有重要意義。V法鑄造在國內(nèi)推廣早期，上述環(huán)節(jié)的缺失為不少企業(yè)釀成了重大損失，目前逐漸引起越來越多企業(yè)的重視。尤其是真空的使用和控制是V法鑄造工藝有別于傳統(tǒng)砂型鑄造的重要特征，深刻的影響著產(chǎn)品質(zhì)量和生產(chǎn)管理過程的控制等。從國外耐磨企業(yè)案例不難看出，在其探索過程中，同樣經(jīng)過了足夠的產(chǎn)品生產(chǎn)試驗(yàn)，從單件到小批量，從簡易工藝設(shè)備到大型生產(chǎn)線，在充分分析工藝過程的基礎(chǔ)上，對(duì)相應(yīng)V法工藝裝備及生產(chǎn)線有了更充分的認(rèn)識(shí)和風(fēng)險(xiǎn)預(yù)判，為后續(xù)的批量化生產(chǎn)奠定了基礎(chǔ)。 </p><p> 造型臺(tái)車移動(dòng)式V法造型機(jī)組 </p> <p> 該造型機(jī)組由上箱和下箱造型。在臺(tái)車造型機(jī)上完成覆膜、噴（刷）涂料、涂料烘干，而后臺(tái)車移至砂斗下加砂振實(shí)后又移出復(fù)位蓋膜、抽真空、頂箱起模，吊車將鑄型吊走。電動(dòng)臺(tái)車在固定的軌道上前后移動(dòng)，臺(tái)車上裝有震實(shí)臺(tái)、負(fù)壓箱、型板及模樣。電加熱器在臺(tái)車的上部，有移動(dòng)機(jī)構(gòu)可兼管2臺(tái)造型機(jī)使用，用人工烘烤覆膜，也可設(shè)計(jì)成自動(dòng)加熱覆膜機(jī)。覆膜抽真空后噴（刷）涂料而后進(jìn)行涂料烘干，放置砂箱。完成上述工序后，驅(qū)動(dòng)臺(tái)車至砂斗下，空氣彈簧進(jìn)氣，抬起震實(shí)臺(tái)以上部分與加砂斗的雨淋下砂口對(duì)接，驅(qū)動(dòng)下砂氣缸，向砂箱加砂而后振實(shí)。當(dāng)達(dá)到所需要時(shí)間后，震實(shí)停止，震實(shí)臺(tái)下降，電動(dòng)臺(tái)車移至原位，蓋膜并給鑄型抽真空，當(dāng)鑄型達(dá)到一定的緊實(shí)度后，移到頂箱機(jī)構(gòu)處進(jìn)行頂箱起模后，用吊車運(yùn)至合箱處。江陰華天科技開發(fā)有限公司為福建龍巖盛豐機(jī)械制造有限公司和中恒通（福建）機(jī)械制造有限公司設(shè)計(jì)的V法生產(chǎn)線就是采用這種形式，主要生產(chǎn)載重車后橋和制動(dòng)鼓，各種叉車，裝載機(jī)及其他機(jī)械設(shè)備用平衡重類灰鑄鐵件，生產(chǎn)**10000t/年，造型生產(chǎn)率8～10型/h，比較大砂箱內(nèi)尺寸2000×1400×320/360mm。縮短了生產(chǎn)鏈，省去了高爐鐵水凝固和重熔環(huán)節(jié)，簡稱為短流程鑄造工藝。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州先進(jìn)V法鑄造裝備,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889677343750/6918240.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)問題，而因?yàn)檫@個(gè)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(jī)構(gòu)對(duì)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(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 /> 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?zé)峤粨Q達(dá)到冷卻目的。無錫真空密封V法鑄造流程</p><p style="text-indent:25px">鑄件質(zhì)量好，尺寸精度高，輪廓清晰不易產(chǎn)生氣孔等缺點(diǎn)，可與精密鑄件媲美。泰州先進(jìn)V法鑄造裝備</p><p style="text-indent:25px">覆膜架帶動(dòng)EVA薄膜下降過程中與空氣產(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)試控制速度過快是比較現(xiàn)實(shí)的辦法。值得注意的是，覆膜架下行過程中加速度太大會(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。泰州先進(jìn)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，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。江陰華天科技作為環(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)。的企業(yè)之一，為客戶提供良好的氣力輸送，V法鑄造，輸送機(jī)械，環(huán)保設(shè)備。江陰華天科技致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來良好體驗(yàn)。江陰華天科技始終關(guān)注機(jī)械及行業(yè)設(shè)備市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2026397.html</p></div></div></div></div></div><div id="maczgho" class="page-right twoColRt"><div id="d7d7oqx" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8idasz7" class="recomPic likePro"><a 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