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class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145249305566625/6371452493055666257599542.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tn87spj" 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>新鄉(xiāng)冷拔異型鋼廠家排名</p><p><span>***更新：</span>2020-06-11 07:20:07</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="qvpr7nu" 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="ak298s8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ae2nzgn" class="box"><p><p style="text-indent:25px">一般情況下，將冷拉方鋼始鍛溫度理解為鋼或合金在加熱爐內(nèi)允許的高加熱溫度。一般情況下，從加熱爐內(nèi)取出毛坯送到鍛壓設(shè)備上開始鍛造之前，根據(jù)毛坯的大小、運(yùn)送毛坯的方法以及加熱爐與鍛壓設(shè)備之間距離的遠(yuǎn)近，毛坯有幾度到幾十度的溫降。也就是說，冷拉方鋼真正開始鍛造的溫度是稍低的，所以在始鍛之前，新鄉(xiāng)冷拔異型鋼廠家排名，應(yīng)盡量減小毛坯的溫降。由于鋼的過燒溫度約比熔點(diǎn)低100-150℃，過熱溫度又比過燒溫度低約50℃，新鄉(xiāng)冷拔異型鋼廠家排名，所以鋼的始鍛溫度一般應(yīng)低于熔點(diǎn)150-200℃，新鄉(xiāng)冷拔異型鋼廠家排名。另外碳含量對鋼的鍛造上限溫度具有重要的影響，使得冷拉方鋼的始鍛溫度隨含碳量的增加而降低，因此通常始鍛溫度隨含碳量的增加降低得更多，要控制原料中的碳含量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="新鄉(xiāng)冷拔異型鋼廠家排名" src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145249305566625/6371452493055666257599542.jpg"></div><p> 冷拔方鋼是什么？冷拔方鋼是將經(jīng)熱加工后的鋼材在冷狀態(tài)下進(jìn)行二次加工的一種鋼材，這種鋼材的特點(diǎn)就是更加的精密、尺寸精度高、表面相對比較光滑，機(jī)械性能好可用于多種機(jī)械行業(yè)的加工之中。它的生產(chǎn)工序是比較多的，這里簡單介紹一下它的拔制要求：<span style="font-size:12px;">1.拔制方式：長芯棒拔制；短芯棒拔制；無芯棒拔制；游動芯棒拔制。其中多采用短芯棒+無芯棒拔制。</span><span style="font-size:12px;">2.拔管機(jī)：鏈?zhǔn)健摾K式、液壓式。</span><span style="font-size:12px;">3.冷拔工具：外模、內(nèi)模、模套、連接桿及螺絲、芯桿、牙板。</span> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="新鄉(xiāng)冷拔異型鋼廠家排名" src="http://tyunfile.71360.com/UpLoadFile/kanghongjx/2020/1/637145248725503189/6371452487255031898650876.jpg"></div><p style="text-indent:25px">冷拔，指常溫下的拉拔工藝，也是指在材料的一端施加拔力，使材料通過一個模具孔而拔出的方法，模具的孔徑要較材料的直徑小。冷拔圓鋼也就是指通過上述方式加工而成的圓鋼。冷拉指的是在金屬材料的兩端施加拉力強(qiáng)行拉伸金屬材料，使金屬材料產(chǎn)生一定的塑性變形達(dá)到提高金屬材料屈服點(diǎn)強(qiáng)度和延伸材料長度的目的。冷拔圓鋼在材料市場上，人們一般將冷拉圓鋼和冷拔圓鋼等同，其實(shí)兩者有著完全不同的加工方式。在一般情況下人們也就按約定成俗的說法冷拉圓鋼就是指冷拔圓鋼。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" 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