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href="http://www.cdcfah.com/cp/third-drsb_redianou/">熱電偶</a>?湖南碳化硅陶瓷升液管廠家鄒平奧翔硅碳供應(yīng)</p><div id="dnkcumy" class="leftbox clearfix"><h1>湖南碳化硅陶瓷升液管廠家鄒平奧翔硅碳供應(yīng)</h1><div id="ak3hz8c" class="proBig"><div id="ynzwy3l" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238611793476562/5980871.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="sx7e7ik" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238611793476562/5980871.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3nh2hjb" 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>山東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>湖南碳化硅陶瓷升液管廠家</p><p><span>***更新：</span>2020-06-21 07:17:10</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="vkczrya" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">鄒平縣奧翔硅碳制品有限公司</a></p><p><span>聯(lián)系人：</span>張洪恩</p><p><span>郵箱: </span>13884861614@163.com</p><p><span>電話: </span>13884861614</p><p><span>傳真: </span>0543_4534117</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0543-4533667</p><p><span>地址: </span>山東省鄒平市臨池鎮(zhèn)望京村</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="3pr8qho" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="di2apm3" class="box"><p><p>氣體絕緣高壓電器產(chǎn)品用鑄造殼體,相當(dāng)一部分為回轉(zhuǎn)體復(fù)合結(jié)構(gòu)鑄件,重量在40kg以上,主體壁厚在15mm左右,連接法蘭厚度約為30～50mm,局部厚度達(dá)60mm,壁厚變化較大,并伴有各種高質(zhì)量要求的凸臺、法蘭密封面(槽),結(jié)構(gòu)形狀較為復(fù)雜,長期承受。根據(jù)國外先進(jìn)經(jīng)驗,采用金屬型低壓鑄造工藝方法，湖南碳化硅陶瓷升液管廠家,可有效消除鑄件缺點,提高外觀形狀質(zhì)量。低壓鑄造中的升液管使用壽命短是目前所遇到的一個比較關(guān)鍵的問題,由于升液管長時間浸泡在高溫的鋁液中,容易被鋁侵蝕，湖南碳化硅陶瓷升液管廠家,一般的使用材料是鑄鐵管和無縫鋼管,這些材料使用壽命都不理想,高熔點難熔合金,價格又貴，湖南碳化硅陶瓷升液管廠家,無法采用。目前普遍是在涂料上作探索—尋找一種粘結(jié)性能好和耐高溫性能良好的涂料以達(dá)到提高升液管的使用壽命。升液管與爐口及模具在對接安裝時，密封要嚴(yán)密，氣密封間隙的松緊與密封材料的選取十分重要。過緊時壓力大，長時間受力容易壓裂,過松時在很短時間里又會漏氣。另外密封壓緊部位的選取要合理,避免使升液管法蘭盤受力錯位而減短使用壽命。要精確把握間隙、材料，安裝手法等環(huán)節(jié)逐步積累經(jīng)驗。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南碳化硅陶瓷升液管廠家" src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238611793476562/5980871.jpg"></div><p> 本發(fā)明涉及一種鋁合金低壓鑄造澆注系統(tǒng)裝置，具體地說，涉及一種低壓鑄造鋁合金齒輪箱用升液管結(jié)構(gòu)和制造方法。背景技術(shù)：隨著國內(nèi)高鐵市場的快速發(fā)展，高鐵齒輪箱作為動車組傳動系統(tǒng)的部件之一，齒輪箱鑄件的化學(xué)元素要求之高近乎苛刻，低壓鑄造齒輪箱鑄件通常采用鐵質(zhì)升液管，特定的鑄造工藝決定了升液管必須在鋁液中長時間浸泡，在生產(chǎn)制造過程中，F(xiàn)e（鐵）元素與Al（鋁）元素極易發(fā)生反應(yīng)，鐵質(zhì)升液管很容易被腐蝕，污染鋁液，時而伴隨著齒輪箱鑄件的化學(xué)元素Fe超標(biāo)，另外，在使用過程中，若鐵質(zhì)升液管發(fā)生局部被腐蝕導(dǎo)致漏氣，現(xiàn)場很難發(fā)現(xiàn)，澆注時極易造成批量質(zhì)量問題。Fe元素在鋁合金中是一種雜質(zhì)元素，這種雜質(zhì)相主要以一種板條狀或針狀形成的AlFeSi相存在于合金基體中，嚴(yán)重割裂基體，對齒輪箱鑄件的疲勞性能、沖擊韌性、延伸率等性能指標(biāo)產(chǎn)生極大的影響，齒輪箱鑄件Fe含量要求≤，然而，在實際生產(chǎn)過程中增Fe不可避免，受制于原材料成本的原因，原材料Fe含量一般在，本身增Fe空間就極其狹窄，一旦控制不當(dāng)，極易發(fā)生Fe元素超標(biāo)。傳統(tǒng)的齒輪箱鑄造過程中會在升液管壁涂覆一種涂料，但*通過涂料方式阻止增Fe效果不夠理想，因為在低壓鑄造生產(chǎn)過程中。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湖南碳化硅陶瓷升液管廠家" src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998403531096161_zbwuzi_5340980.jpg"></div><p> 將造粒得到的粉粒體通過70目篩后，使用震動加料機(jī)將其填充于升液管模具中并邊填入邊振動，震動頻率為150Hz，然后將所述坩堝模具置于等靜壓設(shè)備中，在200-300MPa的壓力下進(jìn)行冷等靜壓成型，保持壓力100s，脫模后得到升液管生坯。，將所述升液管生胚進(jìn)壓燒結(jié)，得到氮化硅升液管。其中，氣壓燒結(jié)的溫度為1900℃，氣壓燒結(jié)的壓力8MPa。將得到的升液管生坯置于氣壓燒結(jié)爐內(nèi)，抽真空并通電加熱，加熱至900℃后，在繼續(xù)加熱的同時，向爐內(nèi)充入純度為％的氮氣進(jìn)行加壓，加熱至1100℃時壓力為，保溫1h后，繼續(xù)加熱至1400℃，在繼續(xù)加熱的同時，向爐內(nèi)繼續(xù)充入純度為％的氮氣進(jìn)行加壓，達(dá)到氣壓燒結(jié)的溫度為1900℃、壓力為5-10MPa，氣壓燒結(jié)結(jié)束后，停止加熱并關(guān)閉進(jìn)氣閥，隨爐冷卻至100℃開始卸壓，開爐并進(jìn)行精加工和成品檢驗，得到氮化硅升液管。以上內(nèi)容是結(jié)合具體的推薦實施方式對本發(fā)明所作的進(jìn)一步詳細(xì)說明，不能認(rèn)定本發(fā)明具體實施只局限于上述這些說明。對于本發(fā)明所屬技術(shù)領(lǐng)域的普通技術(shù)人員來說，在不脫離本發(fā)明構(gòu)思的前提下，還可以做出若干簡單推演或替換，都應(yīng)當(dāng)視為屬于本發(fā)明的保護(hù)范圍。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/334723.html</p></div></div></div></div></div><div id="rlyqdam" class="page-right twoColRt"><div id="u3eucuw" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dnu2i2p" class="recomPic likePro"><a 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