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#f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>無錫負壓V法鑄造,V法鑄造</p><p><span>***更新：</span>2020-07-27 09:13:15</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="5lfrdfw" 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="5vsu3yf" class="page-proshow02"><p class="title">詳細說明</p><div id="feb2pyv" class="box"><p><p> 關于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，無錫負壓V法鑄造，壽命高；高自動化程度生產(chǎn)線生產(chǎn)效率高，無錫負壓V法鑄造，無錫負壓V法鑄造，人均產(chǎn)量高；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，提高砂強度。無錫負壓V法鑄造</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫負壓V法鑄造,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889431923828/6575353.png"></div><p>?V法鑄造的特點<br></p><p>V法鑄造因其獨特生產(chǎn)工藝，使得生產(chǎn)出來的鑄件表面光潔度和尺寸精度高，生產(chǎn)工序簡單，金屬利用率高，模具和砂箱壽命長，減少型芯數(shù)量使用，舊砂可基本回用，節(jié)約造型成本，少污染且勞動強度低，適用于鑄鐵﹑鑄鋼﹑非鐵合金等鑄件的單件小批量或機械自動化大批量得生產(chǎn)。然造型操作較復雜，從造型開始至終需抽真空，且受薄膜本質(zhì)的限制，須有樹脂砂型芯方能生產(chǎn)復雜鑄件V法鑄造所用的模樣（如圖3.1所示）在V法鑄造生產(chǎn)中占有非常重要的地位，其質(zhì)量的優(yōu)劣直接影響鑄件的質(zhì)量。目前V法鑄造所用模樣一般用木質(zhì)。V法鑄造要求模樣表面光潔﹑尺寸精度高，其工藝收縮率及拔模斜度要小于粘土砂、水玻璃砂、樹脂砂等其他鑄造工藝，一般取收縮率為0．2％～0．8％，拔模斜度在0～1°。V法造型的模樣不與型砂接觸(由薄膜和涂料隔開)，磨損和變形很小，使用壽命長，但模樣結(jié)構(gòu)設計要考慮V法的要求。?<br>無錫密封V法鑄造企業(yè)根據(jù)涂料不同骨料組配的特性，合理地選擇V法鑄造用型砂。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫負壓V法鑄造,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889644755860/7471982.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(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。</p><p> 環(huán)境保護方面 </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程中產(chǎn)生的粉塵，排放量可嚴格達到國家環(huán)保要求。 </p> <p> 從國內(nèi)大部分耐磨企業(yè)的生產(chǎn)情況來看，以上優(yōu)勢并沒有完全在生產(chǎn)中發(fā)揮出來，這與我們對V法鑄造工藝的認識欠缺，對基礎研究的投入以及對設備輔材的配套研究不足有很大關系。 </p> <p> 4技術發(fā)展水平方面 </p> <p> V法鑄造在國內(nèi)發(fā)展的時間有限，局限于鑄造設備企業(yè)的研發(fā)創(chuàng)新能力，V法鑄造生產(chǎn)線形式單一，難以針對特殊鑄件開發(fā)**裝備，這也是V法鑄造在國內(nèi)耐磨件生產(chǎn)方面受到局限的問題之一。目前國內(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，控制水平差異導致生產(chǎn)過程不穩(wěn)定，產(chǎn)品質(zhì)量難以達到V法應有的質(zhì)量水平，同時行業(yè)內(nèi)又缺乏高水平的先進V法鑄造生產(chǎn)線及相關裝備企業(yè)。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫負壓V法鑄造,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889985097657/1146380.png"></div><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℃。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(jié)的組分，燒結(jié)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。金屬液平穩(wěn)充型，避免沖刷鑄型或產(chǎn)生飛濺，一般采用底注半封閉式或開放式澆注系統(tǒng)。泰州實型V法鑄造設備</p><p style="text-indent:25px">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。無錫負壓V法鑄造</p><p style="text-indent:25px">微觀上來講，砂型強度是靠砂子之間以及砂子與砂箱直接的摩擦力建立的。砂箱四壁和箱帶都對砂子有較強的摩擦力，也就加強了其附近砂型的強度。某廠在采用V法工藝生產(chǎn)球鐵橋殼過程中，由于砂箱未加箱檔或抽氣管，盡管系統(tǒng)真空度較高，但是鑄型強度及剛性不足，完全抵擋不住球墨鑄**固過程中的石墨化膨脹，嚴重脹箱，造成鑄件內(nèi)部組織致密性不夠，同時分型面產(chǎn)生極大的飛邊，致使鑄件報廢。砂箱及鑄件如圖8所示。江陰華天科技開發(fā)有限公司坐落于中國經(jīng)濟發(fā)達的長江三角洲經(jīng)濟區(qū)中心的江蘇省江陰市，專業(yè)從事氣力輸送系統(tǒng)，V法、消失模、樹脂砂、水玻璃砂鑄造設備，輸送設備及環(huán)保設備的設計制造、安裝調(diào)試。無錫負壓V法鑄造</p><p style="text-indent:25px">江陰華天科技開發(fā)有限公司屬于機械及行業(yè)設備的高新企業(yè)，技術力量雄厚。是一家私營有限責任公司企業(yè)，隨著市場的發(fā)展和生產(chǎn)的需求，與多家企業(yè)合作研究，在原有產(chǎn)品的基礎上經(jīng)過不斷改進，追求新型，在強化內(nèi)部管理，完善結(jié)構(gòu)調(diào)整的同時，優(yōu)良的質(zhì)量、合理的價格、完善的服務，在業(yè)界受到***好評。公司業(yè)務涵蓋[ "氣力輸送", "V法鑄造", "輸送機械", "環(huán)保設備" ]，價格合理，品質(zhì)有保證，深受廣大客戶的歡迎。江陰華天科技將以真誠的服務、創(chuàng)新的理念、***的產(chǎn)品，為彼此贏得全新的未來！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/716674.html</p></div></div></div></div></div><div id="yg73zi7" class="page-right twoColRt"><div id="udv48m3" class="box01 margin10 clearfix"><h3><a 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