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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889732578125/1173701.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="m8hvm9r" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889732578125/1173701.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mycj8qc" 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>無錫覆膜砂V法鑄造介紹,V法鑄造</p><p><span>***更新：</span>2020-12-07 03:11:20</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="lc9ajre" 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</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="dtqc3xt" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="isu3ipb" class="box"><p><p> 砂芯的設(shè)計(jì) </p> <p> 砂芯的設(shè)計(jì)主要是排氣問題，在砂芯的分芯面上開挖排氣和集氣通道，在這些通道上扎制砂芯內(nèi)部排氣孔，再將這些排氣和集氣通道進(jìn)行匯集，通過匯集點(diǎn)向鑄型外排出，使得砂芯內(nèi)氣體有效排出型外，避免氣孔和鑄件內(nèi)壁氧化等缺點(diǎn)。 </p> <p> <br /> </p> <p> <br /> </p> <p> 5.澆注速度，無錫覆膜砂V法鑄造介紹、真空保持時間的設(shè)計(jì) </p> <p> 由于V法鑄造的真空特點(diǎn)，澆注過程中，外型和坭芯均處于真空狀態(tài)，其澆注充型的能力遠(yuǎn)大于其它鑄造工藝。鑒于V法鑄造冷卻緩慢和真空特性，澆注溫度不宜偏高，目的是為了避免或減弱收縮類缺點(diǎn)。 </p> <p> 在通氣和排氣系統(tǒng)適當(dāng)?shù)那闆r下，在澆注末期透氣孔不出現(xiàn)“嗆火”狀態(tài)下可以提高澆注速度，滿足產(chǎn)品質(zhì)量前提下，無錫覆膜砂V法鑄造介紹，可以在平常澆注速度的基礎(chǔ)上提高20%～30%;澆注終了的點(diǎn)澆等與其它工藝相同，無錫覆膜砂V法鑄造介紹。實(shí)際生產(chǎn)中，一般依據(jù)真空罐上的真空表及砂箱外管道上的真空表反映的負(fù)壓度來調(diào)節(jié)生產(chǎn)時的負(fù)壓度。無錫覆膜砂V法鑄造介紹</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫覆膜砂V法鑄造介紹,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889732578125/1173701.png"></div><p> 4．加砂造型并震實(shí) </p> <p> （1）砂子成分：以120～140目海細(xì)沙為宜。 </p> <p> （2）加砂方式：先將少量砂子加到模樣上，壓住薄膜，以保證薄膜不起皺。 </p> <p> （3）砂子處理：用過的砂子要經(jīng)過除塵和冷卻方能使用。 </p> <p> 5．起膜并放置型芯 </p> <p> （1）起膜時要掌握行車，砂箱要平起，盡量避免錯位，錯位要及時修復(fù)。 </p> <p> （2）型芯為樹脂砂制作，表面涂油V法涂料。樹脂砂型芯較硬，能保證不粘砂和鑄件的完整。 </p> <p> （3）型芯的位置和尺寸要正確配合型腔 </p> <p> （4）型腔內(nèi)的砂子用真空吸管抽走。 </p> <p> 6．修整型腔并合箱 </p> <p> （1）型腔的拐角、凸緣要補(bǔ)刷涂料以保證能夠鑄出完整。 </p> <p> （2）上線箱體之間放泥條來保證箱體之間的密封。 </p> <p> （3）合箱時要平起平落，不得與芯子相撞。泰州密封V法鑄造裝備為了穩(wěn)定系統(tǒng)壓力，避免澆注時出現(xiàn)塌箱，應(yīng)加大穩(wěn)壓罐容積。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫覆膜砂V法鑄造介紹,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889370097657/738567.png"></div><p> 耐磨鑄件是采礦、冶金、建材、電力、石化、機(jī)械、交通等重要工業(yè)領(lǐng)域的消耗品，在工業(yè)生產(chǎn)中占有重要地位。據(jù)不完全統(tǒng)計(jì), 國內(nèi)年消耗量超過200 萬t , 目前已有近千家耐磨鑄件生產(chǎn)企業(yè), 年生產(chǎn)能力達(dá)到500 萬噸以上，鑄造工藝多種多樣。 </p> <p> 耐磨鑄件工藝現(xiàn)狀 </p> <p> 目前，耐磨鑄件普遍采用水玻璃砂，堿酚醛樹脂砂鑄造工藝，也有部分采用消失模鑄造工藝。這些工藝靈活穩(wěn)定，工藝成熟度較相對較高，能夠?qū)崿F(xiàn)穩(wěn)定批量化生產(chǎn)，是耐磨鑄件生產(chǎn)的傳統(tǒng)工藝。但尤其是水玻璃砂、樹脂砂工藝同時存在著勞動強(qiáng)度大，人均生產(chǎn)效率低的弊端，在環(huán)保問題日益嚴(yán)峻、勞動力成本越來越高的***，傳統(tǒng)工藝面臨著較大的壓力。 </p> <p> 結(jié)合產(chǎn)業(yè)升級的趨勢，國內(nèi)部分企業(yè)探索V法鑄造工藝生產(chǎn)耐磨鑄件，產(chǎn)品類型以軋臼壁、破碎壁、齒板、錘頭等中大型鑄件為主，所生產(chǎn)的鑄件具有表面質(zhì)量好，尺寸精度高的優(yōu)勢，同時造型落砂等工序勞動強(qiáng)度低，具有相對比較好的環(huán)保優(yōu)勢。 </p><p> 國內(nèi)V法薄膜生產(chǎn)企業(yè)主要有武漢恒德科技有限公司、北京華盾塑料公司、天津市萊沃商貿(mào)有限公司等。其中，武漢恒德科技有限公司是我國比較大的V法**EVA薄膜生產(chǎn)企業(yè)，該公司現(xiàn)有4條生產(chǎn)線，具備日產(chǎn)12 t不同規(guī)格EVA薄膜的能力。 </p> <p> 該公司不斷改進(jìn)基于EVA的V法**膜，其醋酸乙烯含量(質(zhì)量分?jǐn)?shù)，下同)為18%-20%，維卡軟化點(diǎn)為70℃。添加山茶植物油提煉的外潤滑劑等輔料，使其伸長率較高，縱向達(dá)到717 % ,橫向達(dá)到589，接近日本同類產(chǎn)品。目前，V法鑄造用EVA鑄型薄膜的行業(yè)標(biāo)準(zhǔn)正在制訂中。水環(huán)式真空泵依靠水環(huán)實(shí)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="無錫覆膜砂V法鑄造介紹,V法鑄造" src="https://tyunfile.71360.com/UploadFile/Jyhuatian/637293889773623047/2195160.png"></div><p> V法鑄造工藝過程和特點(diǎn) </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(fù)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(shí)、刮平箱內(nèi)干砂，放上密封膜，抽負(fù)壓，使鑄型內(nèi)外產(chǎn)生壓力差而緊實(shí)，。 </p> <p> 解除模樣內(nèi)真空，起模。鑄型保持負(fù)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(nèi)的壓力恢復(fù)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(jìn)入清理工部完成工藝過程。鋁合金多采用開放式澆注系統(tǒng)F直∶F橫∶F內(nèi)＝1∶(2～3)∶(1～5)，**小截面積比砂型鑄造大20～30%；揚(yáng)州質(zhì)量V法鑄造特點(diǎn)</p><p style="text-indent:25px">消除涂料、薄膜氣化產(chǎn)物對鑄型的強(qiáng)度與負(fù)壓度影響。無錫覆膜砂V法鑄造介紹</p><p> 覆膜架設(shè)計(jì)對覆膜成形的影響 </p> <p> 烤膜覆膜作為V法鑄造的第一步，直接影響著整個造型的質(zhì)量和效率。EVA薄膜只有在加熱烘烤到一定程度的時候，其延伸性也就是通常所說的覆膜成形性能才能達(dá)到比較好狀態(tài)。然而，從烘烤結(jié)束到薄膜下降至模具的過程中，EVA薄膜由于逐漸遠(yuǎn)離熱源，會很快冷卻，脫離比較好覆膜狀態(tài)。這就要求覆膜架在極短的時間內(nèi)，完成覆膜動作。大量的工藝實(shí)踐表明，覆膜架在5s內(nèi)下行到位是**為合適的，時間越長，對薄膜原有的熱態(tài)延伸性削減越大。一個簡單的公式：t=s/v；（t—覆膜框行走時間；s—覆膜框行程，即EVA薄膜加熱位置與模具臺面的距離；v—覆膜框下降的平均速度）顯然，覆膜框行程和下降的速度直接影響著行走時間，也就影響著覆膜成形的質(zhì)量。無錫覆膜砂V法鑄造介紹</p><p style="text-indent:25px">江陰華天科技開發(fā)有限公司總部位于月城鎮(zhèn)月翔路17號，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。江陰華天科技擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團(tuán)隊(duì)，以高度的專注和執(zhí)著為客戶提供氣力輸送，V法鑄造，輸送機(jī)械，環(huán)保設(shè)備。江陰華天科技不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點(diǎn)，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。江陰華天科技始終關(guān)注機(jī)械及行業(yè)設(shè)備市場，以敏銳的市場洞察力，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/2296979.html</p></div></div></div></div></div><div id="q837jq8" class="page-right twoColRt"><div id="imtf94r" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="f2ctsg2" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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