余姚聯(lián)銘粉末冶金信息推薦寧波聯(lián)銘粉末冶金供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="在粉末冶金材料的熱處理中，為了提高淬透性，通常加入一些合金元素如：鎳、鉬、錳、鉻、釩等，它們的作用跟在致密材料中的作用機(jī)理相同，可明顯細(xì)化晶粒，當(dāng)其溶于奧氏體后會(huì)增加過冷奧氏體的穩(wěn)定性，保證淬火時(shí)的奧氏體轉(zhuǎn)變，余姚聯(lián)銘粉末冶金，使淬火后材料"><meta name="keywords" content="余姚聯(lián)銘粉末冶金"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" 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tcPro"><section class="home-main container clearfix"><div id="dednpof" class="twoCol"><div id="8myvh2o" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yjkc/">冶金礦產(chǎn)</a>?<a href="http://www.cdcfah.com/cp/second-yjkc_jsfm/">金屬粉末</a>?<a href="http://www.cdcfah.com/cp/third-jsfm_qtjsfm/">其他金屬粉末</a>?余姚聯(lián)銘粉末冶金信息推薦寧波聯(lián)銘粉末冶金供應(yīng)</p><div id="vkhjvkg" class="leftbox clearfix"><h1>余姚聯(lián)銘粉末冶金信息推薦寧波聯(lián)銘粉末冶金供應(yīng)</h1><div id="e2nwzl8" class="proBig"><div id="ihjgipb" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lmfmyj/637249885493642578/8160048.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3mtq88u" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/lmfmyj/637249885493642578/8160048.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="kzg3ohy" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>余姚聯(lián)銘粉末冶金</p><p><span>***更新：</span>2020-06-24 07:21:37</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="lk8bszb" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">寧波聯(lián)銘粉末冶金有限公司</a></p><p><span>聯(lián)系人：</span>樂雪君</p><p><span>郵箱: </span>286178122@qq.com</p><p><span>電話: </span>13484278563</p><p><span>傳真: </span>0574_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0574-13484278</p><p><span>地址: </span>蛟川街道鎮(zhèn)寧東路685號(hào)</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="td72d8k" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="uz79jyq" class="box"><p><p> 在粉末冶金材料的熱處理中，為了提高淬透性，通常加入一些合金元素如：鎳、鉬、錳、鉻、釩等，它們的作用跟在致密材料中的作用機(jī)理相同，可明顯細(xì)化晶粒，當(dāng)其溶于奧氏體后會(huì)增加過冷奧氏體的穩(wěn)定性，保證淬火時(shí)的奧氏體轉(zhuǎn)變，余姚聯(lián)銘粉末冶金，使淬火后材料的表面硬度增加，淬硬深度也增加。另外，粉末冶金材料淬火后都要進(jìn)行回火處理，回火處理的溫度控制對(duì)粉末冶金材料的的性能影響較大，因此要根據(jù)不同材料的特性確定回火溫度，降低回火脆性的影響，一般的材料可在175-250℃下空氣或油中回火0.5-1.0h。 </p> <p> 2、化學(xué)熱處理工藝 </p> <p> 化學(xué)熱處理一般都包括分解，余姚聯(lián)銘粉末冶金，余姚聯(lián)銘粉末冶金、吸收、擴(kuò)散三個(gè)基本過程，比如，滲碳熱處理的反應(yīng)如下： </p> <p> 2CO≒[C]+CO2 (放熱反應(yīng)) </p> <p> CH4≒[C]+2H2 (吸熱反應(yīng)) </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余姚聯(lián)銘粉末冶金" src="https://tyunfile.71360.com/UploadFile/lmfmyj/637249885493642578/8160048.jpg"></div><p> 雙向壓制雙向壓制一般分為陰模浮動(dòng)式壓制和陰模拉下式壓制。粉末治金陰模浮動(dòng)式壓制陰模浮動(dòng)式壓制工作原理：陰模由彈簧支承，處于浮動(dòng)狀態(tài)，下模沖固定不動(dòng)，上模沖在凸輪帶動(dòng)下向下進(jìn)入陰模型腔，對(duì)粉末施加向下壓力。開始加壓時(shí)，由于粉末與陰模型腔壁間摩擦力小于彈簧支承力，只有上模沖向下移動(dòng)，隨著壓力增大，粉末對(duì)陰模型腔壁間的摩擦力大干彈簧支承力時(shí)，陰模型腔與上模沖一起向下運(yùn)動(dòng)，與下模沖間產(chǎn)生相對(duì)移動(dòng)，從而達(dá)到雙向壓制的效果。陰模浮動(dòng)式壓制的一個(gè)循環(huán)有以下步驟。A裝料：手工或者由自動(dòng)送粉器把粉末均勻裝入陰模型腔。B上沖下壓：粉末填充完畢后，陰模彈簧支撐，下模沖位置固定不變，上模沖在壓機(jī)凸輪帶動(dòng)下，向下進(jìn)入陰模型腔，對(duì)陰模型腔中的粉末施加向下壓力。C陰模浮動(dòng)：隨著上模沖施加的壓力不斷增大，粉末對(duì)陰模型腔壁間的摩擦力也不斷增大，當(dāng)此摩擦力大干陰模型腔的彈簧支撐力時(shí)，陰模型腔與上模沖一起向下運(yùn)動(dòng)，直到坯件成型。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余姚聯(lián)銘粉末冶金" src="https://tyunfile.71360.com/UploadFile/lmfmyj/637249885633291016/5569944.jpg"></div><p> 近年來，一系列粉末冶金新的成形技術(shù)層出不窮，并呈現(xiàn)出加速發(fā)展態(tài)勢(shì),金屬注射成形、溫壓成形、流動(dòng)溫壓成形、噴射成形、高速壓制成形等新技術(shù)不斷涌現(xiàn),使得粉末高致密化成形技術(shù)得到了很大的發(fā)展。 </p> <p> 包括電工材料和磁性材料。電工材料中，用作電能頭材料的有金、銀、鉑等貴金屬的粉末冶金材料和以銀、銅為基體添加鎢、鎳、鐵、碳化鎢、石墨等制成的粉末冶金加工材料;用作電極的有鎢銅、鎢鎳銅等粉末冶金材料;用作電刷的有金屬-石墨粉末冶金材料;用作電熱合金和熱電偶的有鉬、鉭、鎢等粉末冶金材料。磁性材料分為軟磁材料和硬磁材料。軟磁材料有磁性粉末、磁粉芯、軟磁鐵氧體、矩磁鐵氧體、壓磁鐵氧體、微波鐵氧體、正鐵氧體和粉末硅鋼等;硬磁材料有硬磁鐵氧體、稀土鈷硬磁、磁記錄材料、微粉硬磁、磁性塑料等。用于制造各種轉(zhuǎn)換、傳遞、儲(chǔ)存能量和信息的磁性器件。 </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/371711.html</p></div></div></div></div></div><div id="rb2pg2c" class="page-right twoColRt"><div id="jdxysug" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dspgsug" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="etq2v3q" class="recomPic likePro"><a 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