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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lvnszd3" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998424404004729_zbwuzi_4901460.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="u87ls9h" 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>哈爾濱耐腐蝕氮化硅保護管供應(yīng)商</p><p><span>***更新：</span>2020-06-20 08:17:15</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="h9cc3ol" 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: </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="qcolsmv" class="page-proshow02"><p class="title">詳細說明</p><div id="ahyfhby" class="box"><p><p> 氮化硅制品干壓造粒1、干壓造粒是指將粉料通過模具成型，然后破碎、球化的過程。具體步驟為：預壓輸送→滾壓成型→破碎造粒。具有造粒效率高、生產(chǎn)成本低等優(yōu)點。2、與一些造粒方法，如噴霧造粒相比，干壓造粒所需粘結(jié)劑含量非常低，這樣可以減少因為粘結(jié)劑導致的燒結(jié)密度低，氣孔多的問題。四、冷等靜壓造粒1、冷等靜壓造粒與干壓造粒方法類似，同樣是將粉體置于一定壓力下成型，再破碎球化的造粒方法。2、區(qū)別在于陶瓷粉體放入特定模具后，再置于冷等靜壓設(shè)備中。3、粉體經(jīng)過冷等靜壓工藝壓制成坯體，再通過破碎機破碎，過篩，完成造粒過程。4、冷等靜壓利用了液體介質(zhì)不可壓縮的特點和均勻傳遞壓力的特點，可實現(xiàn)從各個方向?qū)υ嚇舆M行均勻加壓，確保粉體各個方向所受到的壓強均勻且大小不變。三，哈爾濱耐腐蝕氮化硅保護管供應(yīng)商、加壓造粒法：1，哈爾濱耐腐蝕氮化硅保護管供應(yīng)商、以上干壓造粒和冷等靜壓造粒都屬于加壓造粒法，哈爾濱耐腐蝕氮化硅保護管供應(yīng)商。2、優(yōu)點：形成的團粒體積密度大，有利于提高坯體致密度。3、添加的塑化劑等有機物含量少，后期處理簡單，設(shè)備和工藝簡單。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="哈爾濱耐腐蝕氮化硅保護管供應(yīng)商" src="http://tyunfile.71360.com/UpLoadFile/2019/7/27/16/636998424404004729_zbwuzi_4901460.jpg"></div><p> <br /> </p> <p> 熱電偶保護管主要起到保護作用，而接下來，我們就要一起認識一下它的具體用途。一起前來認識看看吧。熱電偶保護管主要有兩種用途：一是防止遭受機械損壞；二是保護熱電偶免受被測介質(zhì)化學腐蝕、不受氧化氣氛或還原氣氛的有害影響，使熱電偶盡可能處于接近其比較好氣氛中。因此熱電偶必須加以保護，使之不受不良氣氛的侵害。氮化硅結(jié)合碳化硅保護管，不但具有良好的抗熱震、抗氧化性能，而且具有抗酸堿腐蝕，氮化硅保護管、抗高溫金屬液體沖刷等特性。普遍應(yīng)用于鋁、鋅等金屬冶煉領(lǐng)域。 </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="哈爾濱耐腐蝕氮化硅保護管供應(yīng)商" src="https://tyunfile.71360.com/UploadFile/zbwuzi/637238611242792969/527626.jpg"></div><p style="text-indent:25px">氮化硅制品按工藝可以分為反應(yīng)燒結(jié)制品、熱壓制品、常壓燒結(jié)制品、等靜壓燒結(jié)制品和反應(yīng)重燒制品等。其中，反應(yīng)燒結(jié)是一種常用的生產(chǎn)氮化硅耐火制品的方法。反應(yīng)燒結(jié)法生產(chǎn)氮化硅制品是將磨細的硅粉（粒度一般小于80μm），用機壓或等靜壓成型，坯體干燥后，在氮氣中加熱至1350～1400℃，在燒成過程中同時氮化而制得。采用這種生產(chǎn)方法，原料條件和燒成工藝及氣氛條件對制品的性能有很大的影響。硅粉中含有許多雜質(zhì)，如Fe，Ca，Aì，Ti等。Fe被認為是反應(yīng)過程中的催化劑。它能促進硅的擴散，但同時，也將造成氣孔等缺點。Fe作為添加劑的主要作用：在反應(yīng)過程中可作催化劑，促使制品表面生成SiO2氧化膜；形成鐵硅熔系，氮溶解在液態(tài)FeSi2中，促進β-Si3N4的生成。但鐵顆粒過大或含量過高，制品中也會出現(xiàn)氣孔等缺點，降低性能。一般鐵的加入量為0～5%。Al，Ca，Ti等雜質(zhì)，易與硅形成低共熔物。適當?shù)奶砑恿浚梢源龠M燒結(jié)，提高制品的性能。硅粉的粒度越細，比表面積越大，則可降低燒成溫度。粒度較細的硅粉與粒度較粗的硅粉相比，制品中含α- Si3N4的量增高。降低硅粉的粒徑，可以降**品的顯微氣孔尺寸。適當?shù)牧６扰浔龋梢蕴岣咧破访芏取?溫度對氮化速率影響很大。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/323462.html</p></div></div></div></div></div><div id="ras78t3" class="page-right twoColRt"><div id="edqnzli" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="azbdz3i" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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