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#f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>泰州覆膜砂V法鑄造效果,V法鑄造</p><p><span>***更新：</span>2020-07-31 15:20:11</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="h0n555e" 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="34i5dx9" class="page-proshow02"><p class="title">詳細說明</p><div id="vqa0rqh" class="box"><p><p> 耐火涂料的使用在V法鑄造中起到至關重要的作用。涂料層的性能不*影響薄膜氣化氣體的遷移，而且與鑄件表面質(zhì)量密切相關。涂料載液一般選用乙醇、甲醇或異丙醇，綜合實踐一般選用乙醇含量大于95％的工業(yè)酒精，沸點為70℃，密度0．8g／cm，閃點12℃，泰州覆膜砂V法鑄造效果。V法鑄造用涂料應具有以下基本要求： </p> <p> 不與塑料薄膜反應，***無味； </p> <p> 具有好的懸浮性和強韌性，涂料層有高的透氣性及良好的抗機械滲透粘砂的能力； </p> <p> 較高耐火度，其中應含有耐火度較高的礦物和耐火度相對較低、易燒結的組分，泰州覆膜砂V法鑄造效果，泰州覆膜砂V法鑄造效果，燒結形成剝離層，清理時易潰散； </p> <p> 要有較小的發(fā)氣量，良好的流動性和觸變性； </p> <p> 較高附著力，涂料能牢固的粘附在塑料薄膜上形成致密的涂層。為了穩(wěn)定系統(tǒng)壓力，避免澆注時出現(xiàn)塌箱，應加大穩(wěn)壓罐容積。泰州覆膜砂V法鑄造效果</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州覆膜砂V法鑄造效果,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889732578125/1173701.png"></div><p> 重視系統(tǒng)化工程的設計 </p> <p> 耐磨鑄造車間的建設是一個系統(tǒng)工程，除了生產(chǎn)設備本身外，車間布局物流設計，原輔材料的配套，熱處理系統(tǒng)的配套，機加工設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***增加了企業(yè)成本，而且造成管理使用上的困難。可通過采用建設冷卻立體庫，設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，降低了設備投資成本，同時提高的系統(tǒng)運行效率。揚州質(zhì)量V法鑄造優(yōu)點近國內(nèi)消失模生產(chǎn)廠家發(fā)展迅速，尤其是中小廠家，但實踐中有些鑄件采用消失模鑄造不很對號。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州覆膜砂V法鑄造效果,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889985097657/1146380.png"></div><p> V法鑄造工藝設計簡介 </p> <p> 對于V法鑄造工藝的設計，不是只完成單個鑄件的工藝設計，應該是先完成單個鑄件的澆冒口系統(tǒng)、砂芯設計、透氣設計、冷鐵等的設計，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計，合理布置，重新進行澆注系統(tǒng)的優(yōu)化設計。之后進行模型體和型板上的抽氣塞設計(大小、位置、間距等設計)，抽氣塞的設計必須自行進行，不能交由模具設計和制作單位進行，抽氣塞設計是否合理對后續(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。 </p><p> 與傳統(tǒng)濕型相比，V法砂型少無型壁移動，其硬度可達90—95，由于干砂保溫時間長，冒口體積可減少5%—15%。因此V法鑄造可提高金屬液的利用率（球墨鑄鐵件提高約25%，鑄鋼件提高約20%）。V法鑄造適合生產(chǎn)球墨鑄鐵鑄件，也適合生產(chǎn)鑄鋼件。圖4為V法鑄造的球墨鑄鐵后橋。圖5為我國天瑞集團鑄造有限公司V法鑄造的鐵道機車鑄鋼側(cè)架。 </p> <p> V法砂型處于真空，不含水份，保溫性能好，很適合生產(chǎn)小批量少無內(nèi)腔的鋁合金鑄件。日本曾采用大型V法造型機和超大砂箱（7000 mm×4000mm×1000/800mm）生產(chǎn)出鑄鋁游艇殼體（見圖6）。烏克蘭、荷蘭和美國等數(shù)家鑄造企業(yè)采用V法生產(chǎn)醫(yī)療，電子，通訊等行業(yè)用的小型鋁鑄件，其鑄件表面質(zhì)量可與金屬型鑄鋁件媲美。圖7為美國Harmony Casting公司采用V法生產(chǎn)的鑄鋁件，大平面厚度為4.7mm，局部薄至2.3mm。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，可與精密鑄件媲美。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州覆膜砂V法鑄造效果,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889370097657/738567.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果。有人提出低負壓大流量的說法，明確顯示出負壓很低但是整個生產(chǎn)過程非常安全。其實這就是砂箱結構布置合理的效果。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；另有觀點認為，只要整個鑄型處在一個負壓場下，各點的強度應該是一樣的。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。合理的澆注系統(tǒng)及澆注速度是防止產(chǎn)生脹砂、塌箱、增厚等缺點的關鍵措施；泰州先進V法鑄造介紹</p><p style="text-indent:25px">鑄型負壓度的控制。鑄型負壓度的控制包括真空度和抽氣速度控制，造型﹑澆注和冷卻期間。泰州覆膜砂V法鑄造效果</p><p> V法鑄造工藝裝備對鑄件質(zhì)量的影響 </p> <p> V法鑄造引入我國至今已有30多年的發(fā)展，而V法鑄造裝備則經(jīng)歷了從無到有以及由對外引進仿制，到自主研發(fā)設計的過程。V法鑄造裝備質(zhì)量水平的提升，也進一步保障并促進了V法鑄造工藝的拓展。據(jù)不完全統(tǒng)計，目前國內(nèi)約有400多條形式各異的V法鑄造生產(chǎn)線在運行，既有極其簡易甚至不配套砂處理的單機造型設備，也有比較常見且配置相對***的半自動鑄造生產(chǎn)線，更有機械化，自動化程度較高，投資規(guī)模龐大的現(xiàn)代化V法鑄造車間。但是根據(jù)大量的調(diào)研與實踐，發(fā)現(xiàn)部分設備和工裝難以滿足鑄件產(chǎn)品的生產(chǎn)工藝要求，致使生產(chǎn)受阻或產(chǎn)品質(zhì)量難以保證。尤其是造型過程中覆膜成形，加砂震實，抽真空起模工序，相應設備工裝的特點明顯影響著鑄型和鑄件質(zhì)量。泰州覆膜砂V法鑄造效果</p><p style="text-indent:25px">江陰華天科技開發(fā)有限公司位于江蘇省無錫市，創(chuàng)立于2006-09-27。公司業(yè)務分為[ "氣力輸送", "V法鑄造", "輸送機械", "環(huán)保設備" ]等，目前不斷進行創(chuàng)新和服務改進，為客戶提供質(zhì)量的產(chǎn)品和服務。公司從事機械及行業(yè)設備多年，有著創(chuàng)新的設計、強大的技術，還有一批**的專業(yè)化的隊伍，確保為客戶提供質(zhì)量的產(chǎn)品及服務。公司自成立以來發(fā)展迅速，業(yè)務不斷發(fā)展壯大，年營業(yè)額度達到700-1000萬元，未來我們將不斷進行創(chuàng)新和改進，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/763848.html</p></div></div></div></div></div><div id="fb3pufz" class="page-right twoColRt"><div id="ht0uaqx" class="box01 margin10 clearfix"><h3><a 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