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id="qf8xr"></sup></th><optgroup id="qf8xr"></optgroup><pre id="qf8xr"></pre></div> <div id="ix4ijkg" class="all_head"> <div id="b9p4tux" class="all_head_left"> <a href="http://yy4080ys.com"> <img alt="北極信息港" src="/images/logo.png" /> </a> </div> <div id="8svuo8x" class="clr"></div> </div> <link href="/css/zsy1212.css" type="text/css" rel="stylesheet" /> <link href="/css/common.css" type="text/css" rel="stylesheet" /> <div id="9i83cav" class="w960"> <div class="wyq344c" id="Tab1" style="float:right"> <div id="ipwnr4f" class="Menubox"> <ul><li id="sch0" onclick="fSelSch(0)" class="hover">搜索引擎</li><li id="sch1" onclick="fSelSch(1)">北極信息港</li></ul> </div> <div id="uze844o" class="Contentbox"> <ul> <li id="9sostu3" class="li01"> <form id="frmSchFull" onsubmit="return baidu(this)"> <span id="u4661jg" class="li02"> <input name="word" type="text" class="Sinput"> </span> <input type="hidden" name="s" value="0"> <input type="submit" name="Submit" class="Sbuttom" value="搜索"> <input name="tn" type="hidden" value="bds"> <input name="cl" type="hidden" value="3"> <input name="ct" type="hidden"> <input name="si" type="hidden" value="cjjhb.com"> </form> </li> </ul> </div> </div> </div>    <div class="ovq41s3" id="showmsg_head"> </div> <div id="wa46icd" class="all_now_position" style="margin-top: 10px;"> 您所在的位置:<a href="http://yy4080ys.com">總站首頁(yè)</a> ><a href="http://yy4080ys.com">北極信息港</a> >精密無(wú)縫鋼管-信守承諾 </div>  <div class="v9fmoml" id="showmsg">  <div class="dnppqmo" id="showmsg_left"> <div class="34cfycf" id="showmsg_title"> <h1>精密無(wú)縫鋼管-信守承諾</h1> </div> <div id="f8x8ous" class="showmsg_contentall"> <div class="3bagghi" id="showmsg_content_top"> </div> <div class="rxazda3" id="showmsg_companymsg"> <ul> <li> 公司:<strong><a href="/changshousdy1" target="_blank"> 珺豪金屬制品(長(zhǎng)壽區(qū)分公司)</a></strong> </li> <li>價(jià)格:電聯(lián)</li> <li id="lxr">聯(lián)系人:胡經(jīng)理</li> <li>更新時(shí)間:2025-06-11 18:12:45<span id="zbae3qv" class="weather"> ip歸屬地：重慶，天氣：晴，溫度：22-36</span> 瀏覽次數(shù):1</li> <li>所在地:長(zhǎng)壽 </li> <li>標(biāo)題:<strong><a href="#">精密無(wú)縫鋼管-信守承諾</a></strong></li> <li> 來(lái)源: <span>sdy1</span> </li> <div id="3lonpl8" class="bdsharebuttonbox"> <a href="#" class="bds_more" data-cmd="more"></a> <a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空間"></a> <a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a> <a href="#" class="bds_tqq" data-cmd="tqq" title="分享到騰訊微博"></a> <a href="#" class="bds_renren" data-cmd="renren" title="分享到人人網(wǎng)"></a> <a href="#" class="bds_weixin" data-cmd="weixin" title="分享到wx"></a> </div> </ul> <div id="o3einmo" class="tu"> <div id="ck8xvw8" class="t_left1213"> <div id="88rqrt3" class="pimgbig"><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322433837.jpg" id="pimgbig" alt="精密無(wú)縫鋼管-信守承諾"></div> <ul class="pimgsmall"> <li><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322433837.jpg" alt="精密無(wú)縫鋼管-信守承諾"></li> <li><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220321491436.jpg" alt="精密無(wú)縫鋼管-信守承諾"></li> <li><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220320313214.jpg" alt="精密無(wú)縫鋼管-信守承諾"></li> </ul> </div> </div> </div> <div class="o4gm8a8" id="showmsg_content"> <div id="r4gprsu" class="new-cont-box new-cont-box-300"> <div id="864tvvx" class="new-info-box"> <pre> <hr> <div id="lmuvuuv" class="ty-tips1212">以下是:重慶市長(zhǎng)壽區(qū)精密無(wú)縫鋼管-信守承諾的產(chǎn)品參數(shù) </div> <div id="d8vdegi" class="newcanshubox"> <table><tbody><tr><th>范圍</th><td>精密無(wú)縫鋼管-信守承諾供應(yīng)范圍覆蓋重慶市長(zhǎng)壽區(qū) 萬(wàn)州區(qū)、涪陵區(qū)、渝中區(qū)、大渡口區(qū)、江北區(qū)、沙坪壩區(qū)、九龍坡區(qū)、南岸區(qū)、北碚區(qū)、綦江區(qū)、大足區(qū)、渝北區(qū)、巴南區(qū)、黔江區(qū)、江津區(qū)、合川區(qū)、永川區(qū)、南川區(qū)、潼南區(qū)、銅梁區(qū)、榮昌區(qū)、璧山區(qū)、梁平區(qū)、城口縣、豐都縣、墊江縣、武隆縣、忠縣、開縣、云陽(yáng)縣、奉節(jié)縣、巫山縣、巫溪縣等區(qū)域。</td></tr></tbody> </table> </div> <div id="4fkf33j" class="_hnyd3w2aqb"></div><div id="n9gm88l" class="cont-tips">【珺豪】業(yè)務(wù)覆蓋多元場(chǎng)景，提供以下產(chǎn)品和服務(wù)：涪陵厚壁無(wú)縫鋼管敢與同行比質(zhì)量、九龍坡厚壁無(wú)縫鋼管買的放心、南川厚壁無(wú)縫鋼管真誠(chéng)合作、榮昌厚壁無(wú)縫鋼管匠心品質(zhì)、璧山厚壁無(wú)縫鋼管服務(wù)周到、武隆厚壁無(wú)縫鋼管現(xiàn)貨直發(fā)等。<span id="wba88jh" class="tybt2">精密無(wú)縫鋼管-信守承諾</span>,<span id="8go8zya" class="tysbm2">珺豪金屬制品(長(zhǎng)壽區(qū)分公司)</span>為您提供<span id="lp8kjnq" class="tybt2">精密無(wú)縫鋼管-信守承諾</span>的資訊,聯(lián)系人:<span id="fi8xdbh" class="tylxr">胡經(jīng)理</span>,發(fā)貨地:<span id="fk98rpt" class="tydz">經(jīng)濟(jì)開發(fā)區(qū)匯通物流園</span>。重慶市,長(zhǎng)壽區(qū) 長(zhǎng)壽區(qū)處重慶同城化發(fā)展先行區(qū)，長(zhǎng)壽城區(qū)位于重慶主城以東沿江下游，緊依兩江新區(qū)，距重慶江北國(guó)際機(jī)場(chǎng)和重慶北站60公里，萬(wàn)噸級(jí)船隊(duì)常年可通江達(dá)海，渝懷、渝利、渝萬(wàn)鐵路和渝宜、長(zhǎng)涪、三環(huán)高速交織交匯，是重慶水陸交通的重要樞紐。</div> <p> <div id="nsywa8m" class="ty-tips1212">我們精心制作的精密無(wú)縫鋼管-信守承諾產(chǎn)品視頻已經(jīng)準(zhǔn)備就緒，【解鎖新品！】精密無(wú)縫鋼管-信守承諾產(chǎn)品視頻，帶你穿越新品體驗(yàn)之旅！</div><p></p><div id="pvz8u4h" class="ty-tips1212">以下是:重慶長(zhǎng)壽精密無(wú)縫鋼管-信守承諾的圖文介紹 </div><p><p class="typys">精誠(chéng)合作、共振輝煌，為營(yíng)銷理念，用過(guò)硬的質(zhì)量、良好的信譽(yù)、優(yōu)質(zhì)的服務(wù)、合理的價(jià)格，不斷的拓展<span id="vwacaf8" class="tycsgjc4"> 厚壁無(wú)縫鋼管</span>市場(chǎng)。針對(duì)客商制定的特殊規(guī)格、型號(hào)的<span id="4zhhcik" class="tycsgjc4"> 厚壁無(wú)縫鋼管</span>產(chǎn)品，無(wú)論量大還是量小，<span id="u3kmmow" class="tycsgsmz4">重慶長(zhǎng)壽珺豪金屬制品有限公司</span>都能迅速的組織生產(chǎn)。正是因?yàn)橛辛藦?qiáng)大的科研、生產(chǎn)作后盾，以靈活的生產(chǎn)、銷售為經(jīng)營(yíng)手段，<span id="83lqnpv" class="tycsgsmz4">重慶長(zhǎng)壽珺豪金屬制品有限公司</span>才會(huì)創(chuàng)造一個(gè)又一個(gè)驕人的業(yè)績(jī)。　　公司竭誠(chéng)歡迎海內(nèi)外各界新老朋友來(lái)函來(lái)電洽談業(yè)務(wù)，并隨時(shí)恭候垂詢惠顧。愿與您精誠(chéng)合作，共創(chuàng)輝煌的明天。</p></p><p><img src="http://img.cjjhb.com/UploadImages/202108/11/202108111007544288.jpg" title=" 精密無(wú)縫鋼管-信守承諾" alt=" 精密無(wú)縫鋼管-信守承諾"/></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322485936.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322440970.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><div id="mvbdb33" class="khcont"><p> 產(chǎn) 品說(shuō) 明<br /> 化學(xué)成分：碳（C）量是0.42~0.50%，Si含量為0.17~0.37%，Mn含量0.50~0.80%，Cr含量<=0.25%。<br /> 45#精密無(wú)縫鋼管熱處理方法：<br /> 熱處理溫度：正火850，淬火840，回火600. <br /> 45#精密無(wú)縫鋼管為優(yōu)質(zhì)碳素結(jié)構(gòu)用鋼 ,硬度不高易切削加工,模具中常用來(lái)做模板,梢子,導(dǎo)柱等,但須熱處理。 <br /> 1. 45#精密無(wú)縫鋼管淬火后沒(méi)有回火之前，硬度大于HRC55（可達(dá)HRC62）為合格。 <br /> 實(shí)際應(yīng)用的硬度為HRC55（高頻淬火HRC58）。 <br /> 2. 45#精密無(wú)縫鋼管不要采用滲碳淬火的熱處理工藝。 <br /> 調(diào)質(zhì)處理后零件具有良好的綜合機(jī)械性能，廣泛應(yīng)用于各種重要的結(jié)構(gòu)零件，特別是那些在交變負(fù)荷下工作的連桿、螺栓、齒輪及軸類等。但表面硬度較低，不耐磨?？捎谜{(diào)質(zhì)+表面淬火提高零件表面硬度。 <br /> 滲碳處理一般用于表面耐磨、芯部耐沖擊的重載零件，其耐磨性比調(diào)質(zhì)+表面淬火高。其表面含碳量0.8－－1.2%，芯部一般在0.1－－0.25%（特殊情況下采用0.35%）。經(jīng)熱處理后，表面可以獲得很高的硬度（HRC58－－62），芯部硬度低，耐沖擊。 </p> <p> 公司生產(chǎn)產(chǎn)品主要包括：軸承用冷軋精密鋼管、鋼筋連接套筒用冷軋精密鋼管、非標(biāo)中空絲桿用冷軋精密鋼管、機(jī)械加工用冷軋精密無(wú)縫鋼管、汽車減震器用冷軋精密鋼管、摩托車減震器用冷軋精密鋼管、電機(jī)外殼專用精密鋼管、液壓和氣動(dòng)缸筒用精密內(nèi)徑無(wú)縫鋼管等。 <br /> 其顯著特點(diǎn)是：1、冷軋精密鋼管公差尺寸精度高，產(chǎn)品精度控制±0.05mm；光潔度好；內(nèi)外表面無(wú)氧化層，內(nèi)壁清潔度好。2、冷軋精密鋼管的綜合性能優(yōu)良，能承受高壓，冷彎、擴(kuò)口、壓扁不開裂，不皺皮，能作各種復(fù)雜變形及機(jī)械加工處理。3、精密無(wú)縫管的推廣應(yīng)用可以節(jié)約鋼材，提高加工工效，減少加工工序和設(shè)備投資，可以節(jié)約費(fèi)用和大大節(jié)約機(jī)械加工工時(shí)，提高生產(chǎn)量和材料利用率，同時(shí)有利于提高產(chǎn)品質(zhì)量，降低成本。 </p> <p> </p></div><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322391090.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322375393.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322329648.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><div id="zfnoq3w" class="khcont5"><p> <br /> 根據(jù)精密管產(chǎn)生脆性的回火溫度范圍，可分為低溫回火脆性和高溫回火脆性。 </p> <p> 精密管低溫回火脆性合金鋼淬火得到馬氏體組織后，在250～400℃溫度范圍回火使鋼脆化，其韌性一脆性轉(zhuǎn)化溫度明顯升高。已脆化的精密管不能再用低溫回火加熱的方法，故又稱為%26ldquo;不可逆回火脆性%26rdquo;。它主要發(fā)生在合金結(jié)構(gòu)鋼和低合金超高強(qiáng)度精密管等鋼種。已脆化精密管的斷口是沿晶斷口或是沿晶和準(zhǔn)解理混合斷口。產(chǎn)生低溫回火脆性的原因，普遍認(rèn)為：(1)與滲碳體在低溫回火時(shí)以薄片狀在原奧氏體晶界析出，造成晶界脆化密切相關(guān)。(2)雜質(zhì)元素磷等在原奧氏體晶界偏聚也是造成低溫回火脆性原因之一。含磷低于0.005%的高純精密管并不產(chǎn)生低溫回火脆性。磷在火加熱時(shí)發(fā)生奧氏體晶界偏聚，淬火后保留下來(lái)。磷在原奧氏體晶界偏聚和滲碳體回火時(shí)在原奧氏體晶界析出，這兩個(gè)因素造成沿晶脆斷，促成了低溫回火脆性的發(fā)生。 </p> <p> 精密管中合金元素對(duì)低溫回火脆性產(chǎn)生較大的影響。鉻和錳促進(jìn)雜質(zhì)元素磷等在奧氏體晶界偏聚，從而促進(jìn)低溫回火脆性，鎢和釩基本上沒(méi)有影響，鉬降低低溫回火精密管的韌性一脆性轉(zhuǎn)化溫度，但尚不足以抑制低溫回火脆性。硅能推遲回火時(shí)滲碳體析出，提高其生成溫度，故可提高精密管低溫回火脆性發(fā)生的溫度。 </p></div><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322292690.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322232857.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><div id="34onoou" class="khcont"><p> <br /> 高精密鋼管  </p> <p> </p> <p> 高精密鋼管的標(biāo)準(zhǔn);GB/T3639-2008，另外可能也還有應(yīng)用GB/T8162-2008結(jié)構(gòu)用精密鋼管的。 </p> <p> 高精密鋼管歐標(biāo)為：DIN2391<br /> 高精密鋼管的生產(chǎn)流程和普通的無(wú)縫管一樣，就是多了道后酸洗冷軋的程序。 <br /> 管坯——檢驗(yàn)——?jiǎng)兤ぁ獧z驗(yàn)——加熱——穿孔——酸洗——修磨——潤(rùn)滑風(fēng)干——焊頭——冷拔——固溶處理——酸洗——酸洗鈍化——檢驗(yàn)——冷軋——去油——切頭——風(fēng)干——內(nèi)拋光——外拋光——檢驗(yàn)——標(biāo)識(shí)——成品包裝<br /> 精密鋼管工藝流程<br /> 管坯——檢驗(yàn)——?jiǎng)兤ぁ獧z驗(yàn)——加熱——穿孔——酸洗——修蘑——潤(rùn)滑風(fēng)干——焊頭——冷拔——固溶處理——酸洗——酸洗鈍化——檢驗(yàn)<br /> 精密鋼管進(jìn)行塑性變形時(shí)，金屬的強(qiáng)度和硬度升高，而其塑性和韌性下降的現(xiàn)象稱為冷變形強(qiáng)化（也稱為加工硬化）。產(chǎn)生冷變形強(qiáng)化的原因，通常被認(rèn)為在塑性變形過(guò)程中，隨變形量的增加，位錯(cuò)密度增加，并發(fā)生一系列交互作用，使位錯(cuò)運(yùn)動(dòng)受阻；同時(shí)晶粒也會(huì)出現(xiàn)破碎，變成細(xì)條狀，晶界變得模糊不清，形成所謂的"纖維組織"。無(wú)錫精密鋼管的變形程度愈大，位錯(cuò)密度愈高，位錯(cuò)運(yùn)動(dòng)的阻力愈大，塑性變形抗力也愈大，則其強(qiáng)度和硬度升高，而塑性韌性下降。 </p></div><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322217870.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322174614.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/142/1249/202402220322145070.jpg" title="精密無(wú)縫鋼管-信守承諾"><br></p><div id="k93qr8c" class=imgtipsbox>點(diǎn)擊查看珺豪金屬制品(長(zhǎng)壽區(qū)分公司)的<a href="/changshousdy1/picture.html"><span id="gkqlort" class=imgtips>【產(chǎn)品相冊(cè)庫(kù)】</span></a>以及我們的<a href="/changshousdy1/video.html"><span id="pourvv8" class=videotips>【產(chǎn)品視頻庫(kù)】</span></a></div> </p> <hr> <div id="elr88sv" class="cont-tips">今年在重慶市長(zhǎng)壽區(qū)購(gòu)買<span id="i33rq8h" class="tybt5">精密無(wú)縫鋼管-信守承諾</span>有了新選擇，<span id="4flm3bd" class="tysbm5">珺豪金屬制品(長(zhǎng)壽區(qū)分公司)</span>始終堅(jiān)守以用戶為中心的服務(wù)理念,將品質(zhì)作為發(fā)展的基石。廠家直銷,確保為您提供價(jià)格實(shí)惠且品質(zhì)卓越的<span id="nqrqwwd" class="tybt1">精密無(wú)縫鋼管-信守承諾</span>產(chǎn)品。如需購(gòu)買或咨詢,請(qǐng)隨時(shí)聯(lián)系我們,聯(lián)系人:<span id="n8jmkjr" class="tylxr">胡經(jīng)理</span>-【17768165506】,地址:<span id="ddj9zy8" class="tydz">經(jīng)濟(jì)開發(fā)區(qū)匯通物流園</span>。</div> </pre> </div> <div id="is8jghl" class="main-bd"> <a target="_blank">在360搜索 <span id="34cagfn" class="sstitle2024">精密無(wú)縫鋼管-信守承諾</span> 的信息</a></br> <a target="_blank">在搜狗搜索 <span id="8fk3x43" class="sstitle2024">精密無(wú)縫鋼管-信守承諾</span> 的信息</a> </div> </div> </div> </div> </div>   <div class="hk3ehl3" id="showmsg_right">  <div id="rwavddc" class="title"><a class="title-name">聯(lián)系我們</a> <span>CONTACT US</span> </div> <div class="vefhflp" id="showmsg_right_advt"> <ul class="lxfsbox"> <li>聯(lián)系人：胡經(jīng)理</li> <li id="cgfk83l" class="mobileimg">手機(jī)：17768165506</li> <li id="vxdy89c" class="mobileimg">QQ：1747188098</li> <li>企業(yè)：<a href="/changshousdy1" target="_blank"> 珺豪金屬制品(長(zhǎng)壽區(qū)分公司)</a></li> <li>主營(yíng)：厚壁無(wú)縫鋼管</li> <li>地址：經(jīng)濟(jì)開發(fā)區(qū)匯通物流園發(fā)貨到長(zhǎng)壽</li> </ul> </div>  <div class="ovbcfij" id="showmsg_sj"> 您也許對(duì)長(zhǎng)壽本地以下產(chǎn)品新聞也感興趣 </div> <div class="9bfh3x4" id="showmsg_sj"> 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