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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="vkhya3r" class="twoCol"><div id="8mr3pcz" 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_gangcai/">鋼材</a>?<a href="http://www.cdcfah.com/cp/third-gangcai_xingcai/">型材</a>?河南冷拔鋼廠家報(bào)價(jià) 康弘供</p><div id="bqiaczq" class="leftbox clearfix"><h1>河南冷拔鋼廠家報(bào)價(jià) 康弘供</h1><div id="wliub33" class="proBig"><div id="qugn3iy" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145248281824291/6371452482818242913675787.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8jgd8v3" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145248281824291/6371452482818242913675787.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qz7ug73" 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>河南省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河南冷拔鋼廠家報(bào)價(jià)</p><p><span>***更新：</span>2020-06-04 05:11:28</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="ktldfw3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">新鄉(xiāng)市康弘機(jī)械有限公司</a></p><p><span>聯(lián)系人：</span>朱經(jīng)理</p><p><span>郵箱: </span>xxkhjx@163.com</p><p><span>電話: </span>15893889818</p><p><span>傳真: </span>0373_5438268</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0373-5439888</p><p><span>地址: </span>合河鄉(xiāng)東北永康村</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="878jldx" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="aurtace" class="box"><p><p style="text-indent:25px">冷拔加工使材料除了有拉伸變形外還有擠壓變形冷拔加工一般要在專門的冷拔機(jī)上進(jìn)行。鋼材經(jīng)冷加工后，產(chǎn)生一定的塑性變形，屈服點(diǎn)明顯提高，即強(qiáng)度和硬度明顯提高，河南冷拔鋼廠家報(bào)價(jià)，但塑性和韌性有所降低，這種現(xiàn)象稱為鋼材的冷加工強(qiáng)化（或冷作強(qiáng)化）。通常冷加工變形越大，則強(qiáng)化越明顯，即屈服強(qiáng)度提高越多，河南冷拔鋼廠家報(bào)價(jià)，而塑性與韌性降低也越大。圓鋼在冷拔過程中，不僅受拉，同時(shí)還受到擠壓作用，河南冷拔鋼廠家報(bào)價(jià)。經(jīng)過一次或多次冷拔后，圓鋼的屈服強(qiáng)度可提高40%～60%，但塑性**降低，具有硬鋼的性質(zhì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南冷拔鋼廠家報(bào)價(jià)" src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145248281824291/6371452482818242913675787.png"></div><p style="text-indent:25px">冷拔鋼堆積時(shí)的準(zhǔn)則要求是在碼垛穩(wěn)固、確保的條件下，做到按種類、規(guī)格碼垛，不同種類的資料要別離碼垛，避免混淆和相互腐蝕。禁止在垛位附近存放對鋼材有腐蝕作用的物品。垛底應(yīng)墊高、鞏固、平整，避免資料受潮或變形。同種資料按入庫先后別離堆碼，便于履行先進(jìn)先發(fā)的準(zhǔn)則。露天堆積的型鋼，下面有木墊或條石，垛面略有傾斜，以利排水，并留意資料安放平直，避免形成曲折變形。垛與垛之間應(yīng)留有的通道，檢查道一般為零點(diǎn)五米，出入通道視資料巨細(xì)和運(yùn)送機(jī)械而定露天堆積的角鋼和槽鋼應(yīng)俯放，即口朝下，工字鋼應(yīng)立放，鋼材的I槽面不能朝上，以免積水生銹。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南冷拔鋼廠家報(bào)價(jià)" src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145249305566625/6371452493055666257599542.jpg"></div><p> 冷拉和冷拔的區(qū)別：是金屬冷加工的兩種不同的方法，兩者并非一個(gè)概念。<span style="font-size:12px;">冷拉是在常溫條件下,以超過原來鋼筋屈服點(diǎn)強(qiáng)度的拉應(yīng)力,強(qiáng)行拉</span><span style="font-size:12px;">伸鋼筋,使鋼筋產(chǎn)生一塑性變形達(dá)到提高鋼筋屈服點(diǎn)強(qiáng)度和節(jié)約鋼材</span><span style="font-size:12px;">的目的。此處常溫為平均室外溫度大于5°C。<span></span></span><span style="font-size:12px;">冷拔時(shí),鋼筋同時(shí)經(jīng)受張拉和擠壓而發(fā)生塑性變形,拔出的鋼筋截面</span><span style="font-size:12px;">積減小，產(chǎn)生冷作強(qiáng)化,抗拉強(qiáng)度可提高40 ~ 90%。</span><span style="font-size:12px;">冷拉指在金屬材料的兩端施加拉力，使材料產(chǎn)生拉伸變形</span><span style="font-size:12px;"></span><span style="font-size:12px;">的方法;</span><span style="font-size:12px;"></span><span style="font-size:12px;">冷拔是指在材料的一端施加拔力,使材料通過一個(gè)模具孔</span><span style="font-size:12px;"></span><span style="font-size:12px;">而拔出的方法，模具的孔徑要較材料的直徑小些。</span><span style="font-size:12px;"> <p> <br /> </p> </span> </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南冷拔鋼廠家報(bào)價(jià)" src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145248776682184/6371452487766821848108873.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/139246.html</p></div></div></div></div></div><div id="vkmolsp" class="page-right twoColRt"><div id="ujqszg3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mliaco8" 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