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href="http://www.cdcfah.com/cp/third-zzjrclsbfg_zzsbev/">鑄造設備</a>?揚州密封V法鑄造服務至上江陰華天科技供應</p><div id="3tvn9iu" class="leftbox clearfix"><h1>揚州密封V法鑄造服務至上江陰華天科技供應</h1><div id="cjrtiz2" class="proBig"><div id="nhj8fuw" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293890362187500/7879725.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="qfmbamj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293890362187500/7879725.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ydvn48t" 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>產品關鍵詞：</span>揚州密封V法鑄造,V法鑄造</p><p><span>***更新：</span>2020-12-03 00:23:23</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="furg98h" 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="nhzwlc7" class="page-proshow02"><p class="title">詳細說明</p><div id="jnfc4d2" class="box"><p><p style="text-indent:25px">金屬軟管抽氣和管式抽氣式復合砂箱。在V法鑄造實踐中，揚州密封V法鑄造，針對以上2種砂箱存在的各種問題，國內多數(shù)廠家采用復合砂箱，其箱壁用10mm鋼板焊接，用金屬軟管抽氣。砂箱結構簡單，單層壁構成，可制作尺寸較大的砂箱。為避免塌箱引起鑄型沉降和變形，設置較密箱帶，揚州密封V法鑄造。金屬管兩端與固定在砂箱上壁的真空接頭相連，抽氣時，通過軟管的各活動節(jié)的縫隙來抽吸砂粒間的空氣，同時又能阻止細砂及粉塵被吸走。因軟管間隙較大易吸人砂粒和粉塵，揚州密封V法鑄造，真空管路系統(tǒng)必須配有濾砂和水浴裝置?？s短了生產鏈，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。揚州密封V法鑄造</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州密封V法鑄造,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293890362187500/7879725.png"></div><p>?V法鑄造的特點<br></p><p>V法鑄造因其獨特生產工藝，使得生產出來的鑄件表面光潔度和尺寸精度高，生產工序簡單，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。然造型操作較復雜，從造型開始至終需抽真空，且受薄膜本質的限制，須有樹脂砂型芯方能生產復雜鑄件V法鑄造所用的模樣（如圖3.1所示）在V法鑄造生產中占有非常重要的地位，其質量的優(yōu)劣直接影響鑄件的質量。目前V法鑄造所用模樣一般用木質。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，但模樣結構設計要考慮V法的要求。?<br>無錫V法鑄造流程為增加干砂的堆積密度，采用高頻率低振幅的振動方式使砂箱中干砂緊實。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州密封V法鑄造,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889985097657/1146380.png"></div><p> V法鑄造工藝過程和特點 </p> <p> 1 V法鑄造基本工藝過程 </p> <p> 制造帶有抽氣箱和抽氣孔模樣。 </p> <p> 烘烤薄膜并覆蓋到模樣上，抽負壓，使覆膜成形，后噴上快干涂料。 </p> <p> 將帶有過濾抽氣管的砂箱，放在已覆有薄膜的模板上。 </p> <p> 充填、振實、刮平箱內干砂，放上密封膜，抽負壓，使鑄型內外產生壓力差而緊實，。 </p> <p> 解除模樣內真空，起模。鑄型保持負壓狀態(tài)，直到下芯，合箱，澆鑄。 </p> <p> 脫箱落砂。冷卻后，將砂箱內的壓力恢復到常壓狀態(tài)，砂型自動潰散，鑄件保溫后取出，砂冷卻后返回系統(tǒng)循環(huán)使用，將鑄件取走進入清理工部完成工藝過程。 </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法鑄造適合生產球墨鑄鐵鑄件，也適合生產鑄鋼件。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，很適合生產小批量少無內腔的鋁合金鑄件。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法生產醫(yī)療，電子，通訊等行業(yè)用的小型鋁鑄件，其鑄件表面質量可與金屬型鑄鋁件媲美。圖7為美國Harmony Casting公司采用V法生產的鑄鋁件，大平面厚度為4.7mm，局部薄至2.3mm。對于V法鑄造企業(yè)，結合企業(yè)生產和產品特點、V法鑄造特性及其主輔材料的功用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="揚州密封V法鑄造,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889931113282/8104857.png"></div><p> 首先，模樣作成空心，表面開設抽氣孔（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，較大的模樣內部設置加強筋，以保證在抽氣負壓作用下，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減小； </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出現(xiàn)粘膜現(xiàn)象，影響拔模。 </p> <p> 模樣的制作應充分認識V法鑄造抽真空的特點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度和順暢的通氣性，利用定位銷或砂胎等使模樣定位要準確。利用高爐鐵水的熱量，大幅減少能源消耗，同時降污染物排放，節(jié)能，環(huán)保和經濟效益。無錫V法鑄造流程</p><p style="text-indent:25px">正確選用塑料薄膜，型砂，真空泵﹑負壓度、振動時間和結構合理的砂箱是獲得質量V法鑄件的基礎；揚州密封V法鑄造</p><p> 耐火涂料的使用在V法鑄造中起到至關重要的作用。涂料層的性能不僅影響薄膜氣化氣體的遷移，而且與鑄件表面質量密切相關。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、易燒結的組分，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。揚州密封V法鑄造</p><p style="text-indent:25px">江陰華天科技開發(fā)有限公司位于月城鎮(zhèn)月翔路17號。公司自成立以來，以質量為發(fā)展，讓匠心彌散在每個細節(jié)，公司旗下氣力輸送，V法鑄造，輸送機械，環(huán)保設備深受客戶的喜愛。公司秉持誠信為本的經營理念，在機械及行業(yè)設備深耕多年，以技術為先導，以自主產品為重點，發(fā)揮人才優(yōu)勢，打造機械及行業(yè)設備良好品牌。江陰華天科技秉承“客戶為尊、服務為榮、創(chuàng)意為先、技術為實”的經營理念，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/2238041.html</p></div></div></div></div></div><div id="jy8jlsk" class="page-right twoColRt"><div id="j8oqfw3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="b8lsri7" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="q7g8byf" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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