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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <h1><a href="http://www.yy4080ys.com/">91精品国产自在现不卡,午夜免费福利小电影,91色在线 | 国产,欧美A视频</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><output id="bf54f"><em id="bf54f"><rt id="bf54f"></rt></em></output><em id="bf54f"></em><em id="bf54f"></em><strong id="bf54f"><pre id="bf54f"></pre></strong><rt id="bf54f"><noscript id="bf54f"><pre id="bf54f"></pre></noscript></rt><thead id="bf54f"><cite id="bf54f"><center id="bf54f"></center></cite></thead><ol id="bf54f"><legend id="bf54f"><meter id="bf54f"></meter></legend></ol><form id="bf54f"><meter id="bf54f"></meter></form><rt id="bf54f"></rt><del id="bf54f"></del><s id="bf54f"><tr id="bf54f"><meter id="bf54f"></meter></tr></s><div id="bf54f"><var id="bf54f"></var></div><noscript id="bf54f"></noscript><th id="bf54f"></th><sup id="bf54f"></sup><fieldset id="bf54f"></fieldset><sup 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id="showmsg_content_top"> </div> <div class="nrn5qyg" id="showmsg_companymsg"> <ul> <li> 公司:<strong><a href="/haerbingcgz" target="_blank"> 功誠(chéng)鋼管制造(哈爾濱市分公司)</a></strong> </li> <li>價(jià)格:電聯(lián)</li> <li id="lxr">聯(lián)系人:姜培功</li> <li>更新時(shí)間:2025-08-04 06:52:02<span id="r9dlgzi" class="weather"> ip歸屬地：哈爾濱，天氣：多云轉(zhuǎn)晴，溫度：17-28</span> 瀏覽次數(shù):2</li> <li>所在地:哈爾濱 </li> <li>標(biāo)題:<strong><a href="#">買無(wú)縫鋼管必看-質(zhì)量有保障</a></strong></li> <li> 來(lái)源: <span>gcgz</span> </li> <div id="loaftjc" 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="81ejtqm" class="tu"> <div id="7yynvlz" class="t_left1213"> <div id="cbwznmm" class="pimgbig"><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221105129289.jpg" id="pimgbig" alt="買無(wú)縫鋼管必看-質(zhì)量有保障"></div>  <div id="usscqyf" class="playvideo"><img src="/images/play.png" /></div> <div id="851fyfo" class="pvideo"> <video id="pmp4" controls="" controlslist="nodownload" src="http://img.cjjhb.com/pub_soft/236/1466_3.mp4" type="video/mp4" preload="none"></video> </div>  <ul class="pimgsmall"> <li><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221105129289.jpg" alt="買無(wú)縫鋼管必看-質(zhì)量有保障"></li> <li><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221106093599.jpg" alt="買無(wú)縫鋼管必看-質(zhì)量有保障"></li> <li><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221106030667.jpg" alt="買無(wú)縫鋼管必看-質(zhì)量有保障"></li> </ul> </div> </div> </div> <div class="zsogsyk" id="showmsg_content"> <div id="pqvx7nl" class="new-cont-box new-cont-box-300"> <div id="rgccfey" class="new-info-box"> <pre> <hr> <div id="bak17v0" class="ty-tips1212">以下是:黑龍江省哈爾濱市買無(wú)縫鋼管必看-質(zhì)量有保障的產(chǎn)品參數(shù) </div> <div id="zrcdr6p" class="newcanshubox"> <table><tbody><tr><th colspan="2">產(chǎn)品參數(shù)</th></tr><tr><th>產(chǎn)品價(jià)格</th><td>電議</td></tr><tr><th>發(fā)貨期限</th><td>電議</td></tr><tr><th>供貨總量</th><td>電議</td></tr><tr><th>運(yùn)費(fèi)說(shuō)明</th><td>電議</td></tr><tr><th>范圍</th><td>買無(wú)縫鋼管必看-質(zhì)量有保障供應(yīng)范圍覆蓋<a href="http://www.yy4080ys.com/27gcgz236">黑龍江省</a>、<a href="http://www.yy4080ys.com/0451gcgz236">哈爾濱市</a>、<a href="http://www.yy4080ys.com/0452gcgz236">齊齊哈爾市</a>、<a href="http://www.yy4080ys.com/0468gcgz236">鶴崗市</a>、<a href="http://www.yy4080ys.com/0459gcgz236">大慶市</a>、<a href="http://www.yy4080ys.com/0454gcgz236">佳木斯市</a>、<a href="http://www.yy4080ys.com/0453gcgz236">牡丹江市</a>、<a href="http://www.yy4080ys.com/0456gcgz236">黑河市</a>、<a href="http://www.yy4080ys.com/0455gcgz236">綏化市</a>、<a href="http://www.yy4080ys.com/0457gcgz236">大興安嶺市</a> <a 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class="tysbm1">功誠(chéng)鋼管制造(哈爾濱市分公司)</span>為您提供<span id="kishs97" class="tybt1">買無(wú)縫鋼管必看-質(zhì)量有保障</span>,聯(lián)系人:<span id="yx2qt6z" class="tylxr">姜培功</span>,電話:<span id="sphha1q" class="tylxr">【0527-88266888】、【17768165506】</span>。黑龍江省,哈爾濱市哈爾濱地處中國(guó)東北地區(qū)、東北亞中心地帶，是中國(guó)東北地區(qū)北部政治、經(jīng)濟(jì)、文化中心，被譽(yù)為歐亞大陸橋的明珠，是條歐亞大陸橋和空中走廊的國(guó)際性綜合交通樞紐，哈大齊工業(yè)走廊的起點(diǎn)，戰(zhàn)略定位的沿邊開發(fā)開放中心城市、東北亞區(qū)域中心城市及“對(duì)俄合作中心城市”。</div> <p> <div id="cspco8z" class="ty-tips1212">我們的買無(wú)縫鋼管必看-質(zhì)量有保障視頻將帶您走進(jìn)產(chǎn)品的生產(chǎn)線，讓您親眼見證產(chǎn)品的每一個(gè)制作環(huán)節(jié)和工藝細(xì)節(jié)。</div><p><video id='pmp4' width='' class='pmp4' height='auto' controls controlsList='nodownload' type='video/mp4' preload='none' src="http://img.cjjhb.com/pub_soft/236/1466_8.mp4" poster='http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221106586448.jpg' ></video><br></p><div id="93v3ksg" class="ty-tips1212">以下是:黑龍江哈爾濱買無(wú)縫鋼管必看-質(zhì)量有保障的圖文介紹 </div><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107355142.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107324141.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><div id="6pdpuxx" class="khcont"><p> </p> <p> ●無(wú)縫鋼管化學(xué)成份： </p> <p> 碳 C ：0.10～0.15硅 Si：0.17～0.37錳 Mn：1.10～1.60* S ：≤0.035磷 P ：≤0.035鉻 Cr：0.90～1.30釩 V ：0.03～0.06鉬 Mo：0.32～0.40硼 B ：0.002～0.006 </p> <p> ●無(wú)縫鋼管力學(xué)性能： </p> <p> 抗拉強(qiáng)度 σb (MPa)：868 條件屈服強(qiáng)度 σ0.2 (MPa)：713伸長(zhǎng)率 δ5 (%)：17伸長(zhǎng)率 δ10 (%)：11 斷面收縮率 ψ (%)：62 沖擊韌性值 αku (J/cm2)：5 試樣尺寸：某試料 </p> <p> ●無(wú)縫鋼管熱處理規(guī)范及金相組織：熱處理規(guī)范：900℃正火，600℃回火。金相組織：回火貝氏體+少量回火索氏體。<br /> 精密管|精密不銹鋼管|精密小口徑不銹鋼管 </p> <p> 無(wú)縫鋼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。已脆化的無(wú)縫鋼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)度無(wú)縫鋼管等鋼種。已脆化無(wú)縫鋼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%的高純無(wú)縫鋼管并不產(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></div><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107236128.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107196015.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107142528.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><p class="typys"><span id="g71wfay" class="tycsgsmz10">黑龍江哈爾濱功誠(chéng)鋼管制造有限公司</span>是<span id="wewioes" class="tycsgjc10"> 圓鋼廠家</span>生產(chǎn)基地，設(shè)備工藝先進(jìn)，技術(shù)力量雄厚，省部級(jí)重合同守信用企業(yè)，<span id="gomoc2g" class="tycsgjc10"> 圓鋼廠家</span>定點(diǎn)生產(chǎn)廠家。我司擁有完整、科學(xué)的質(zhì)量管理體系。<span id="ynai1cs" class="tycsgsmz10">黑龍江哈爾濱功誠(chéng)鋼管制造有限公司</span>的誠(chéng)信、實(shí)力和產(chǎn)品質(zhì)量獲得業(yè)界的認(rèn)可。歡迎各界朋友蒞臨參觀、指導(dǎo)和業(yè)務(wù)洽談。</p></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107122584.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221107049814.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><div id="bbssq6u" class="khcont"><p> </p> <p> 無(wú)縫鋼管的熱處理是冷拔工藝流程中的重要環(huán)節(jié)。不管是未經(jīng)冷拔的毛坯管的熱處理冷拔流程中的工序間熱處理還是冷拔后的成品管的熱處理都對(duì)拔制效果及拔制后的成品管的金相組織或其物理性能指標(biāo)有重要影響。 </p> <p> 無(wú)縫鋼管的管坯如果不是處于正火及退火狀態(tài)硬度較高需要經(jīng)熱處理降低硬度、改善組織以提高其冷拔效果。冷拔后的鋼管經(jīng)過(guò)塑性變形由于發(fā)生了晶格的扭曲和晶粒的破碎拉長(zhǎng)出現(xiàn)了加工硬化現(xiàn)象處于組織不穩(wěn)定狀態(tài)其硬度、強(qiáng)度等性能指標(biāo)提高明顯而塑性顯著下降。 </p> <p> 無(wú)縫鋼管工序間熱處理的目的就是內(nèi)部應(yīng)力降低硬度提高材料的塑性改善其再次冷拔的效果。否則在再拔制過(guò)程中由于材料塑性的下降將會(huì)導(dǎo)致拔制過(guò)程中斷管以及模具破壞的現(xiàn)象出現(xiàn)。 </p> <p> 而成品無(wú)縫鋼管的熱處理主要是內(nèi)部應(yīng)力保證其強(qiáng)度、硬度等各項(xiàng)物理性能指標(biāo)以滿足使用的要求。 </p></div><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221106586448.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221106550679.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><p><img src="http://2024aiimg.qy55.com//cjjhb_soft/236/1466/202402221106496565.jpg" title="買無(wú)縫鋼管必看-質(zhì)量有保障"><br></p><div id="kiyysb6" class="khcont5"><p> 產(chǎn)品用途：軸承用冷軋精密管、鋼筋連接套筒用冷軋精密管、非標(biāo)中空絲桿用冷軋無(wú)縫鋼管、機(jī)械加工用冷軋精密無(wú)縫管、汽車減震器用冷軋精密管、摩托車減震器用冷軋無(wú)縫鋼管、電機(jī)外殼專用精密管、液壓和氣動(dòng)缸筒用精密內(nèi)徑無(wú)縫鋼管等。 </p> <p> Q345B無(wú)縫鋼管產(chǎn)品特點(diǎn)： </p> <p> 1.外徑更小。 </p> <p> 2.精度高可做小批量生產(chǎn)。 </p> <p> 3. 冷拔成品精度高，表面質(zhì)量好。 </p> <p> 4.鋼管橫面積更復(fù)雜。 </p> <p> 5.鋼管性能更優(yōu)越，金屬比較密。 </p> <p> 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