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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7kbctp7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/mfq123/637280074118720704/923197.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="w3mcout" 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>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>羅湖耐磨精密拉伸五金件加工廠,精密拉伸五金件</p><p><span>***更新：</span>2020-08-13 16:20:18</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="mjar37d" 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(jī): </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(huì)老村路24號(hào)</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="ksove3h" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="23yj39x" class="box"><p><p style="text-indent:25px">曲面拉伸成形，羅湖耐磨精密拉伸五金件加工廠，羅湖耐磨精密拉伸五金件加工廠，羅湖耐磨精密拉伸五金件加工廠，使金屬平板坯料外法蘭部分縮小，內(nèi)法蘭部分伸長(zhǎng)，成為非直壁非平底的曲面形狀的空心產(chǎn)品的沖壓成形方法將左側(cè)初拉伸產(chǎn)品進(jìn)行再拉伸加工，成形為右側(cè)的臺(tái)階形底部。深度較深的部分在拉伸成形的初期就產(chǎn)生變形，深度較淺的部分在拉伸的后期產(chǎn)生變形。在臺(tái)階變化部分的側(cè)壁易誘發(fā)切應(yīng)力產(chǎn)生變形，將前工序拉伸加工的工件，進(jìn)行反向拉伸，是再拉伸的一種。反向拉伸法可增加徑向拉應(yīng)力，對(duì)于防止起皺可收到較好效果。也有可能提高再拉伸的拉伸系數(shù)。多次拉伸可以確保工件的精度，延伸系數(shù)以及生產(chǎn)效率都得到很大程度的提高。羅湖耐磨精密拉伸五金件加工廠</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="羅湖耐磨精密拉伸五金件加工廠,精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074118720704/923197.png"></div><p style="text-indent:25px">球形件拉伸時(shí)，毛坯與凸模的球形頂部局部接觸，其余大部分處于懸空的不受約束的自由狀態(tài)。因此，此類球面零件拉伸的主要工藝問(wèn)題在于局部接觸部分的嚴(yán)重變薄，或曲面部分的失穩(wěn)起皺，將拉伸產(chǎn)品的法蘭盤(pán)部分進(jìn)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，對(duì)前工序拉伸產(chǎn)品的凸緣部進(jìn)行角形再拉伸加工，此種加工要求材料具有良好的塑性，超過(guò)拉伸加工極限的拉伸加工產(chǎn)品，需要經(jīng)過(guò)兩次以上的多次拉伸方能完成。經(jīng)過(guò)前工位深度方向拉伸加工的產(chǎn)品，在深度方向進(jìn)行再拉伸加工。寬凸緣拉伸件，***次拉伸時(shí)就拉伸成所要求的凸緣直徑，在其后再拉伸時(shí)，凸緣直徑保持不變。鹽田防腐精密拉伸五金件加工在相互對(duì)立的技能需求中尋找滿足各種具體需求的拉伸量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="羅湖耐磨精密拉伸五金件加工廠,精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074053916016/1058647.png"></div><p style="text-indent:25px">精密拉伸件市場(chǎng)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(guò)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(zhǎng)變菜。當(dāng)變形程度較大時(shí)，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(yán)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(yán)重，故硬度較高；而底部變形程度小，冷作硬化小，故度也低。</p><p style="text-indent:25px">矩形再拉伸加工（Rectangular redrawing）：多次拉伸成形的高矩形件，其變形不僅與深圓筒形件的拉伸不同，與低盒形件的變形也有很大差別。圖1-46為多工位自動(dòng)搬送壓力機(jī)進(jìn)行高矩形盒件加工時(shí)，多次拉伸過(guò)程中制件外形、尺寸伴隨拉伸高度的變化。臺(tái)階拉伸加工（Step drawing）：將左側(cè)初拉伸產(chǎn)品進(jìn)行再拉伸加工，成形為右側(cè)的臺(tái)階形底部。深度較深的部分在拉伸成形的初期就產(chǎn)生變形，深度較淺的部分在拉伸的后期產(chǎn)生變形。在臺(tái)階變化部分的側(cè)壁易誘發(fā)切應(yīng)力產(chǎn)生變形加之坯料的變形熱使得坯料和金屑熔蓋在模具的表面上，使工件外表擦傷產(chǎn)生劃痕。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="羅湖耐磨精密拉伸五金件加工廠,精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074093007813/4737142.png"></div><p> 不銹鋼拉伸中導(dǎo)致開(kāi)裂形成的原因有：奧氏體不銹鋼的冷作硬化**高；奧氏體不銹鋼為亞穩(wěn)定型，在變形時(shí)會(huì)出現(xiàn)變相，誘發(fā)馬氏體相；馬氏體相又脆，因此會(huì)容易出現(xiàn)開(kāi)裂。在塑性變形中，隨著變形量的增加，誘發(fā)馬氏體含量也會(huì)隨著變形量的增加而增高，殘余應(yīng)力則越大，殘余應(yīng)力和馬氏體含量的關(guān)系：誘發(fā)馬氏體相含量增高，引發(fā)殘余的應(yīng)力越大，在沖壓過(guò)程中便容易開(kāi)裂。 </p> <p> </p> <p> 造成表面劃痕的因素有：不銹鋼拉伸件的表面會(huì)出現(xiàn)劃痕是由于工件與模具表面存在相對(duì)的移動(dòng)，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，加之坯料的變形熱使得坯料和金屑熔蓋在模具的表面上，使工件外表擦傷產(chǎn)生劃痕。 </p> <p> <br /> 聚氨酯涂層是一種為適應(yīng)環(huán)保需求而研制開(kāi)發(fā)的一種新型綠色特殊涂層，有良好的耐磨和耐腐蝕性。羅湖耐磨精密拉伸五金件加工廠</p><p style="text-indent:25px">鋁合金拉伸件加工注意事項(xiàng)有：在取料、移動(dòng)、拉伸中材料不能相互碰擦。羅湖耐磨精密拉伸五金件加工廠</p><p style="text-indent:25px">圓筒拉伸加工（Round drawing）：帶凸緣（法蘭）圓筒產(chǎn)品的拉伸。法蘭與底部均為平面形狀，圓筒側(cè)壁為軸對(duì)稱，在同一圓周上變形均勻分布，法蘭上毛坯產(chǎn)生拉深變形橢圓拉伸加工（Ellipse drawing）：法蘭上毛坯的變形為拉伸變形，但變形量與變形比沿輪廓形狀相應(yīng)變化。曲率越大的部分，毛坯的塑性變形量就越大；反之，曲率越小的部分，毛坯的塑性變形越小矩形拉伸加工（Rectangular drawing）：一次拉伸成形的低矩形件。拉伸時(shí)，凸緣變形區(qū)圓角處的拉伸阻力大于直邊處的拉伸阻力，圓角處的變形程度大于直邊處的變形程度。羅湖耐磨精密拉伸五金件加工廠</p><p style="text-indent:25px">深圳市銘豐慶五金制品有限公司創(chuàng)建于2004-12-09，注冊(cè)資金 500-700萬(wàn)元，辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，已***實(shí)行網(wǎng)絡(luò)化辦公，**提高了速度和效率。致力于創(chuàng)造***的產(chǎn)品與服務(wù)，以誠(chéng)信、敬業(yè)、進(jìn)取為宗旨，以建MFQ明星產(chǎn)品為目標(biāo)，努力打造成為同行業(yè)中具有影響力的企業(yè)。公司堅(jiān)持以客戶為中心、一般經(jīng)營(yíng)項(xiàng)目是：五金制品、彈簧、眼鏡配件、塑膠制品、電子產(chǎn)品的生產(chǎn)和購(gòu)銷（不含限制項(xiàng)目）（取得消防部門(mén)驗(yàn)收合格后方可開(kāi)業(yè)）。汽車、電器、電子、眼鏡、智能穿戴、智能通信、五金商標(biāo)禮品等行業(yè)的配件的生產(chǎn)。市場(chǎng)為導(dǎo)向，重信譽(yù)，保質(zhì)量，想客戶之所想，急用戶之所急，全力以赴滿足客戶的一切需要。銘豐慶五金制品始終以質(zhì)量為發(fā)展，把顧客的滿意作為公司發(fā)展的動(dòng)力，致力于為顧客帶來(lái)***的[ "五金沖壓", "精密彈簧", "精密五金模具", "眼鏡配件" ]。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/903972.html</p></div></div></div></div></div><div id="yg82kzf" class="page-right twoColRt"><div id="y83yzv8" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="npp3bop" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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