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href="http://www.cdcfah.com/cp/second-_wjgj/">五金、工具</a>?<a href="http://www.cdcfah.com/cp/third-wjgj_qtwjgj/">其他五金工具</a>?東莞本地精密拉伸五金件模具銘豐慶五金制品供應(yīng)</p><div id="srtncya" class="leftbox clearfix"><h1>東莞本地精密拉伸五金件模具銘豐慶五金制品供應(yīng)</h1><div id="l8fxhik" class="proBig"><div id="l3vsecq" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/mfq123/637280074303623047/5027911.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fj3ap87" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/mfq123/637280074303623047/5027911.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gkh73bq" 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>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>東莞本地精密拉伸五金件模具,精密拉伸五金件</p><p><span>***更新：</span>2020-09-26 08:18:36</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="icujquq" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市銘豐慶五金制品有限公司</a></p><p><span>聯(lián)系人：</span>劉自成</p><p><span>郵箱: </span>657179543@qq.com</p><p><span>電話: </span>13602685781</p><p><span>傳真: </span>0755_84693444</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0755-84006255</p><p><span>地址: </span>深圳市龍崗區(qū)平湖街道辦新木社區(qū)居委會老村路24號</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="laheg7v" class="page-proshow02"><p class="title">詳細說明</p><div id="37y7qz7" class="box"><p><p> 沖壓拉伸加工中為什么要用塑性好的金屬材料？這取決于塑性材料的拉伸變形量。例如同等的拉伸高度，如果選擇塑性比較差的金屬材料，東莞本地精密拉伸五金件模具，就需要用更多的拉伸步距或中途退火。 </p> <p> <br /> </p> <p> 選擇拉伸材料中，東莞本地精密拉伸五金件模具，要注意屈服點、抗拉強度的比值越小，拉深性能越好，東莞本地精密拉伸五金件模具，一次變形的極限程度越大越有利于降低成本以及保證拉伸的質(zhì)量。不銹鋼拉伸是拉伸工藝中經(jīng)常見到的，很多拉伸件經(jīng)常用到不銹鋼。但由于不銹鋼的延展率比較小，彈性模量也比較大，硬化**比較高。拉伸時會出現(xiàn)開裂有時會出現(xiàn)拉伸變形后；有時會在拉伸件由凹模內(nèi)退出的時候發(fā)生；有時在拉伸變形后受到撞擊或者振動時才出現(xiàn)；有時在拉伸變形后經(jīng)過一段時間的存放或者使用中出現(xiàn)開裂。 </p> <p> <br /> 奧氏體不銹鋼為亞穩(wěn)定型，在變形時會出現(xiàn)變相，誘發(fā)馬氏體相；東莞本地精密拉伸五金件模具</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="東莞本地精密拉伸五金件模具,精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074303623047/5027911.png"></div><p style="text-indent:25px">精密拉伸件市場應(yīng)用*** 拉伸件的種類很多，由于其形狀不同，其變形區(qū)的位置、變形的性質(zhì)、坯料各部分的應(yīng)力應(yīng)變狀態(tài)和分布規(guī)律等都有相當(dāng)大的差別，有些甚至是本質(zhì)上的區(qū)別。 1、拉伸過程中，坯料的凸緣部分是主要變形區(qū)，其余部分只發(fā)生少量變形，但要承受并傳遞拉伸力，故是傳力區(qū)； 2、變形區(qū)受切向壓應(yīng)力和徑向拉應(yīng)力作用，產(chǎn)生切向壓縮和徑向伸長變菜。當(dāng)變形程度較大時，變形區(qū)主要發(fā)生失穩(wěn)起皺現(xiàn)象。 3、拉伸件的壁厚不均勻，口部壁厚略有增厚，底部壁厚略有減薄，靠近底部圓角處變薄嚴重； 4、拉伸件各部分硬度也不一樣，口部變形程度大，冷作硬化嚴重，故硬度較高；而底部變形程度小，冷作硬化小，故度也低。龍崗質(zhì)量精密拉伸五金件的用途和特點在一定的壓力促使下，導(dǎo)致坯料和模具局部表面直接產(chǎn)生摩擦。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="東莞本地精密拉伸五金件模具,精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074145996094/6078502.png"></div><p style="text-indent:25px">變薄拉伸加工：與普通拉伸不同，變薄拉伸主要是在拉伸過程中改變拉伸件筒壁的厚度。凸凹模之間的間隙小于毛坯厚度，毛坯直壁部分在通過間隙時，處于較大的均勻壓應(yīng)力之下，拉伸過程中壁厚變薄的同時，消除容器壁厚偏差，增加容器表面的光滑度，提高精度和強度。面板拉伸加工：面板產(chǎn)品是板材沖壓件，表面形狀復(fù)雜。在拉伸工序中，毛坯變形復(fù)雜，其成形性質(zhì)已非簡單的拉伸成形，而是拉深與脹形同時存在的復(fù)合成形。逆向拉伸加工：將前工序的拉伸工件進行反向拉伸，工件內(nèi)側(cè)變成外側(cè)，并使其外徑變小的加工。</p><p> 毛坯與凸凹模中心不合或五金拉深件沖壓材料厚度不均勻，以及凹模圓角半徑和凸凹模間隙不均勻，凹模圓角半徑太大，在拉深的***階段脫離了壓邊圈，使尚未越過圓角的材料壓邊圈壓不到起皺后被拉入凹模形成口緣褶皺。 </p> <p> <br /> </p> <p> 五金拉深件邊緣不平對策： </p> <p> <br /> </p> <p> 五金拉深件沖模重新定位，校正凹模圓角半徑和凸凹模間隙使其大小均勻后再投入生產(chǎn)減少凹模圓角半徑或采用弧形壓邊圈裝置即可消除褶皺。為什么有的拉伸件廠家沖壓出來的不銹鋼拉深件表面那么光滑，無劃痕？有的生產(chǎn)出來的工件卻是大批量的出現(xiàn)劃痕。 </p> <p> <br /> </p> <p> 經(jīng)過工程師分析發(fā)現(xiàn)，不銹鋼拉深件表出現(xiàn)的那些劃痕是在沖壓移滑的過程中造成的。該怎么防止出現(xiàn)劃痕呢？***要改變滑移時的摩擦狀態(tài)。可以用液態(tài)潤滑、涂油覆膜、噴涂刷油以及凹模強制潤液等涂抹方式。 </p> <p> <br /> 對容易折彎、出料長短的鋁合金材料要及時處理。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="東莞本地精密拉伸五金件模具,精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074424853516/1892555.png"></div><p style="text-indent:25px">法蘭盤拉伸加工：將拉伸產(chǎn)品的法蘭盤部分進行淺拉伸的加工。其應(yīng)力應(yīng)變情況類似于壓縮翻邊。由于切向受壓應(yīng)力，容易起皺，故成形極限主要受壓縮起皺的限制。邊緣拉伸加工：對前工序拉伸產(chǎn)品的凸緣部進行角形再拉伸加工，此種加工要求材料具有良好的塑性。深度拉伸加工：超過拉伸加工極限的拉伸加工產(chǎn)品，需要經(jīng)過兩次以上的多次拉伸方能完成。經(jīng)過前工位深度方向拉伸加工的產(chǎn)品，在深度方向進行再拉伸加工。寬凸緣拉伸件，***次拉伸時就拉伸成所要求的凸緣直徑，在其后再拉伸時，凸緣直徑保持不變。一次拉伸的特點是一次成型，可以提高生產(chǎn)效率。寶安質(zhì)量精密拉伸五金件模具</p><p style="text-indent:25px">奧氏體不銹鋼的冷作硬化**高；東莞本地精密拉伸五金件模具</p><p style="text-indent:25px">精密五金拉伸件是比較難做的，***它的精密度要求高，第二表面光潔度要求也高；第三和普通的拉伸件相比較是很小的。零件的精度能達到0.03mm,表面光潔度可到達0.8mm。如此高精密的工件，需要多年經(jīng)驗的師傅才能做出來。禾聚精密沖壓拉伸件可以保證其公差為±0.01mm，折彎尺寸為±0.03mm內(nèi)，選用拉伸油的方法有四種，硅鋼板是比較容易拉伸的材料，為了工件成品的易清洗性，在防止劃痕產(chǎn)生的前提下會選用低粘度的沖壓油。碳鋼板在選用拉伸油時首先應(yīng)該注意的是拉伸油的粘度。根據(jù)工藝難易度和脫脂條件來決定較佳粘度。東莞本地精密拉伸五金件模具</p><p style="text-indent:25px">深圳市銘豐慶五金制品有限公司致力于五金、工具，是一家生產(chǎn)型的公司。公司業(yè)務(wù)涵蓋五金沖壓，精密彈簧，精密五金模具，眼鏡配件等，價格合理，品質(zhì)有保證。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造五金、工具良好品牌。銘豐慶五金制品立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1428691.html</p></div></div></div></div></div><div id="s78kzof" class="page-right twoColRt"><div id="vfrolce" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="apmebnk" 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" 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