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href="http://www.cdcfah.com/cp/third-wjgj_guanjianbi/">管件</a>?廣西帶勁法蘭鍛件歡迎咨詢河北海浩高壓法蘭管件供應</p><div id="wmmc8g8" class="leftbox clearfix"><h1>廣西帶勁法蘭鍛件歡迎咨詢河北海浩高壓法蘭管件供應</h1><div id="kgw288s" class="proBig"><div id="8i8ayui" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622954419378_hbhhgs_7559577.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="q2mkqo0" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622954419378_hbhhgs_7559577.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="swsymsy" 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>河北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>廣西帶勁法蘭鍛件</p><p><span>***更新：</span>2020-06-08 09:05:47</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="k8gecao" 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有限公司</a></p><p><span>聯(lián)系人：</span>董學文</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: </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="ssi2kgm" class="page-proshow02"><p class="title">詳細說明</p><div id="02ekyw0" class="box"><p><p style="text-indent:25px">(3)過熱金屬坯料由加熱溫度過高或高溫下保溫時間太長引起晶粒粗大的現(xiàn)象稱為過熱。過熱會使坯料塑性下降，鍛件的力學性能降低。為此，要嚴格控制加熱溫度，盡可能縮短高溫階段的保溫時間來預防過熱的產生。 (4)過燒金屬坯料加熱溫度超過始鍛溫度過多，使晶粒邊界出現(xiàn)氧化及熔化的現(xiàn)象稱為過燒。過燒后，材料的強度嚴重下降，塑性很差，一經鍛打即破碎變成廢料，是無法挽救的。因此，要嚴格執(zhí)行正確的操作規(guī)范。 (5)裂紋大型鍛件加熱時，如果裝爐溫度過高或加熱速度過快，則鍛件心部與表層溫差過大，造成內應力過大，導致產生裂紋，廣西帶勁法蘭鍛件，廣西帶勁法蘭鍛件。因此，廣西帶勁法蘭鍛件，對大型鍛件加熱時，要防止裝爐溫度過高和加熱速度過快，一般應采用防熱措施。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西帶勁法蘭鍛件" src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622954419378_hbhhgs_7559577.jpg"></div><p style="text-indent:25px">特點 1)重量范圍大。鍛件有小到幾克至大到幾百噸 2)比鑄件質量高。鍛件的力學性能比鑄件好，能承受大的沖擊力作用和其他重負荷，所以，凡是一些重要的、受力大的零件都采用鍛件。 [1] 對于高碳化物鋼而言，鍛件比軋材質量好。如高速鋼軋材只有經過改鍛后才能滿足使用要求。特別是高速鋼銑刀必須進行改鍛。 3)重**輕。在保證設計強度的前提下，鍛件比鑄件的重量輕，這就減輕了機器自身的重量，對于交通工具、飛機、車輛和字宙航撩器械有重要的意義。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣西帶勁法蘭鍛件" src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622954887549_hbhhgs_5287487.jpg"></div><p style="text-indent:25px">缺點分析編輯 (1)氧化金屬坯料在加熱時與爐中氧化性氣體反應生成氧化物的現(xiàn)象稱為氧化。氧化皮的產生，不但造成金屬的燒損，而且降低鍛件表面質量和尺寸精度。當氧化皮壓入鍛件內深度超過機械加工余量時，能導致鍛件報廢。 (2)脫碳加熱時金屬坯料表層的碳與氧等介質發(fā)生化學反應造成表層碳元素降低的現(xiàn)象稱為脫碳。脫碳會使表層硬度下降，耐磨性降低。如脫碳層厚度小于機械加工余量，不會對鍛件造成危害；反之則影響鍛件質量。采用快速加熱、在坯料表層涂保護涂料、在中性介質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="廣西帶勁法蘭鍛件" src="http://tyunfile.71360.com/UpLoadFile/2019/7/9/9/636982622955199663_hbhhgs_5599618.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/188685.html</p></div></div></div></div></div><div id="6uqe0co" class="page-right twoColRt"><div id="e80s0k0" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="aoemag0" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="8igus80" class="recomPic likePro"><a 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