重慶優(yōu)良法蘭鍛件真誠(chéng)推薦河北海浩高壓法蘭管件供應(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="(3)過(guò)熱金屬坯料由加熱溫度過(guò)高或高溫下保溫時(shí)間太長(zhǎng)引起晶粒粗大的現(xiàn)象稱為過(guò)熱。過(guò)熱會(huì)使坯料塑性下降，鍛件的力學(xué)性能降低，重慶優(yōu)良法蘭鍛件，重慶優(yōu)良法蘭鍛件。為此，要嚴(yán)格控制加熱溫度，重慶優(yōu)良法蘭鍛件，盡可能縮短高溫階段的保溫時(shí)間來(lái)預(yù)防過(guò)熱"><meta name="keywords" content="重慶優(yōu)良法蘭鍛件"><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" 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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mpg8zfw" 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>河北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>重慶優(yōu)良法蘭鍛件</p><p><span>***更新：</span>2020-06-09 12:08:17</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="7g4qm8f" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">河北海浩高壓法蘭管件集團(tuán)有限公司</a></p><p><span>聯(lián)系人：</span>董學(xué)文</p><p><span>郵箱: </span>1390756017@qq.com</p><p><span>電話: </span>15028729866</p><p><span>傳真: </span>0317_6866720</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0317-6866720</p><p><span>地址: </span>河北省孟村縣辛大路付林路段</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="voktw9o" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="s7dnxb3" class="box"><p><p style="text-indent:25px">(3)過(guò)熱金屬坯料由加熱溫度過(guò)高或高溫下保溫時(shí)間太長(zhǎng)引起晶粒粗大的現(xiàn)象稱為過(guò)熱。過(guò)熱會(huì)使坯料塑性下降，鍛件的力學(xué)性能降低，重慶優(yōu)良法蘭鍛件，重慶優(yōu)良法蘭鍛件。為此，要嚴(yán)格控制加熱溫度，重慶優(yōu)良法蘭鍛件，盡可能縮短高溫階段的保溫時(shí)間來(lái)預(yù)防過(guò)熱的產(chǎn)生。 (4)過(guò)燒金屬坯料加熱溫度超過(guò)始鍛溫度過(guò)多，使晶粒邊界出現(xiàn)氧化及熔化的現(xiàn)象稱為過(guò)燒。過(guò)燒后，材料的強(qiáng)度嚴(yán)重下降，塑性很差，一經(jīng)鍛打即破碎變成廢料，是無(wú)法挽救的。因此，要嚴(yán)格執(zhí)行正確的操作規(guī)范。 (5)裂紋大型鍛件加熱時(shí)，如果裝爐溫度過(guò)高或加熱速度過(guò)快，則鍛件心部與表層溫差過(guò)大，造成內(nèi)應(yīng)力過(guò)大，導(dǎo)致產(chǎn)生裂紋。因此，對(duì)大型鍛件加熱時(shí)，要防止裝爐溫度過(guò)高和加熱速度過(guò)快，一般應(yīng)采用防熱措施。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶優(yōu)良法蘭鍛件" src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622955199663_hbhhgs_5599618.jpg"></div><p style="text-indent:25px">缺點(diǎn)分析編輯 (1)氧化金屬坯料在加熱時(shí)與爐中氧化性氣體反應(yīng)生成氧化物的現(xiàn)象稱為氧化。氧化皮的產(chǎn)生，不但造成金屬的燒損，而且降低鍛件表面質(zhì)量和尺寸精度。當(dāng)氧化皮壓入鍛件內(nèi)深度超過(guò)機(jī)械加工余量時(shí)，能導(dǎo)致鍛件報(bào)廢。 (2)脫碳加熱時(shí)金屬坯料表層的碳與氧等介質(zhì)發(fā)生化學(xué)反應(yīng)造成表層碳元素降低的現(xiàn)象稱為脫碳。脫碳會(huì)使表層硬度下降，耐磨性降低。如脫碳層厚度小于機(jī)械加工余量，不會(huì)對(duì)鍛件造成危害；反之則影響鍛件質(zhì)量。采用快速加熱、在坯料表層涂保護(hù)涂料、在中性介質(zhì)或還原性介性中加熱都能減緩脫碳。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶優(yōu)良法蘭鍛件" src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622954419378_hbhhgs_7559577.jpg"></div><p style="text-indent:25px">②水輪發(fā)電機(jī)用鍛件，像主軸和中間軸等。 ③火電站用鍛件，像轉(zhuǎn)子、葉輪、護(hù)環(huán)主軸等。 ④冶金機(jī)械，像冷軋輥、熱軋輥和人字齒輪軸等。 ⑤壓力容器用鍛件，像筒體、釜圈法蘭和封頭等。 ⑥船用鍛件，像曲軸、尾軸、舵桿、推力軸和中間軸等。 ⑦鍛壓機(jī)械設(shè)備，像錘頭、錘桿、水壓機(jī)的立柱、缸體、輪軸壓裝機(jī)的支柱和缸體等。 ⑧模塊鍛件，主要是熱模鍛錘用的鍛模。 ⑨汽車工業(yè)用鍛件，像左、右轉(zhuǎn)向節(jié)、前梁、車鉤等，據(jù)統(tǒng)計(jì)在汽車中，鍛壓件占其質(zhì)量的80%。 ⑩機(jī)車用鍛件，像車軸、車輪、板簧、機(jī)車的曲軸等，據(jù)統(tǒng)計(jì)，在機(jī)車中鍛壓件占其質(zhì)量的60%。 ?**用鍛件，像炮管、門體、炮閂支架和牽引環(huán)等，據(jù)統(tǒng)計(jì)，在坦克中，鍛壓件占其質(zhì)量的65%。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶優(yōu)良法蘭鍛件" src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622954263321_hbhhgs_2146121.jpg"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/202866.html</p></div></div></div></div></div><div id="3dwxyhi" class="page-right twoColRt"><div id="unouqcy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qjabcok" 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="8wawn8m" class="recomPic likePro"><a 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