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src="https://tyunfile.71360.com/UploadFile/mfq123/637280074021494141/8351680.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wl4df3c" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/mfq123/637280074021494141/8351680.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="peypt9g" 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>龍崗精密拉伸五金件的用途和特點(diǎn),精密拉伸五金件</p><p><span>***更新：</span>2020-07-26 17:17:45</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="333729n" 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="zdh74sn" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="dhzbaex" 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，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，要注意屈服點(diǎn)、抗拉強(qiáng)度的比值越小，拉深性能越好，龍崗精密拉伸五金件的用途和特點(diǎn)，龍崗精密拉伸五金件的用途和特點(diǎn)，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(jiàn)到的，龍崗精密拉伸五金件的用途和特點(diǎn)，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(shí)會(huì)出現(xiàn)開(kāi)裂有時(shí)會(huì)出現(xiàn)拉伸變形后；有時(shí)會(huì)在拉伸件由凹模內(nèi)退出的時(shí)候發(fā)生；有時(shí)在拉伸變形后受到撞擊或者振動(dòng)時(shí)才出現(xiàn)；有時(shí)在拉伸變形后經(jīng)過(guò)一段時(shí)間的存放或者使用中出現(xiàn)開(kāi)裂。 </p> <p> <br /> 例如同等的拉伸高度，如果選擇塑性比較差的金屬材料，就需要用更多的拉伸步距或中途退火。龍崗精密拉伸五金件的用途和特點(diǎn)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="龍崗精密拉伸五金件的用途和特點(diǎn),精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074021494141/8351680.png"></div><p> </p> <p> 變薄拉伸加工：用凸模將已成形容器擠入比容器外徑稍小的凹模型腔內(nèi)，使帶底的容器外徑變小，同時(shí)壁厚變薄，既消除壁厚偏差，又使容器表面光滑。按照沖壓時(shí)的溫度情況有冷沖壓和熱沖壓兩種方式。這取決于精密小五金拉伸件材料的強(qiáng)度、厚度、變形程度以及設(shè)備能力等，同時(shí)應(yīng)考慮材料的原始熱處理狀態(tài)和**終使用條件。按照沖壓時(shí)的溫度情況有冷沖壓和熱沖壓兩種方式。這取決于精密小五金拉伸件材料的強(qiáng)度、厚度、變形程度以及設(shè)備能力等，同時(shí)應(yīng)考慮材料的原始熱處理狀態(tài)和**終使用條件。 </p> <p> <br /> 廣州金屬精密拉伸五金件哪里買(mǎi)在拉伸件拉伸成型工藝中，有一次拉伸成型和多次拉伸成型。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="龍崗精密拉伸五金件的用途和特點(diǎn),精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074239697266/6761125.png"></div><p style="text-indent:25px">錐形拉伸加工（Taper drawing）：h/d>0.8、α =10°～30°的深錐形件，由于深度較大，坯料的變形程度較大，*靠坯料與凸模接觸的局部面積傳遞成形力，極易引起坯料局部過(guò)度變薄乃至破裂，需要經(jīng)過(guò)多次過(guò)渡逐漸成形。階梯拉伸法是首先將坯料拉伸成階梯形過(guò)渡件，其階梯外形與錐形部的內(nèi)形相切，***脹形成錐形。階梯過(guò)渡件的拉伸次數(shù)、工藝等與階梯圓筒件的拉伸相同。反向拉伸加工（Reverse drawing）：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)。</p><p style="text-indent:25px">山形拉伸加工（Hill drawing）：沖壓件的側(cè)壁為斜面時(shí)，側(cè)壁在沖壓過(guò)程中是懸空的，不貼模，直到成形結(jié)束時(shí)才貼模。成形時(shí)側(cè)壁的不同部位變形特點(diǎn)不完全相同。丘形拉伸加工（Hill drawing）：丘形蓋板件在成形過(guò)程中的坯件變形不是簡(jiǎn)單的拉伸變形，而是拉伸和脹形變形同時(shí)存在的復(fù)合成形。壓料面上坯件的變形為拉伸變形（徑向?yàn)槔瓚?yīng)力，切向?yàn)閴簯?yīng)力），而輪廓內(nèi)部（特別是中心區(qū)域）坯件的變形為脹形變形（徑向和切向均為拉應(yīng)力）。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="龍崗精密拉伸五金件的用途和特點(diǎn),精密拉伸五金件" src="https://tyunfile.71360.com/UploadFile/mfq123/637280074303623047/5027911.png"></div><p> 精密拉伸沖壓中，鋁合金拉伸件是比較難加工的，但是在加工中注意某些問(wèn)題點(diǎn)就可以很順利的完成加工了。 </p> <p> </p> <p> 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，堆疊以及纏繞等，相互之間要留有一定的空隙。對(duì)容易折彎、出料長(zhǎng)短的鋁合金材料要及時(shí)處理。 </p> <p> </p> <p> 原材料要冷卻到50°以下才能移到拉伸架上進(jìn)行拉伸加工，溫度過(guò)高會(huì)燙到作業(yè)員和燙壞坯毛條，也不能徹底的消除材料內(nèi)應(yīng)力從而產(chǎn)生廢品。 </p> <p> <br /> </p> <p> 由于毛條有阻熱效果，裝飾外表需求高的鋁合金材料要多翻轉(zhuǎn)，便于散熱均勻，從而減少橫向亮斑。 </p> <p> <br /> </p> <p> 要注意寬厚比較高，弧度大、壁厚細(xì)、形狀奇怪等鋁合金材料的小腳、薄齒、長(zhǎng)腿、圓弧面、傾斜面、開(kāi)口、視點(diǎn)等受力情況，避免材料部分或者點(diǎn)狀尺度變形、扭曲、螺旋等。 </p> <p> <br /> </p> <p> 拉伸量要控制在百分之一的擺布，沖壓過(guò)程中需根據(jù)原材料的出料實(shí)際情況與各種具體需求加以調(diào)整。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> <p> <br /> 具有很高的附著力和光潔度，是一種沖壓件防腐蝕涂層。中山?jīng)_壓精密拉伸五金件廠家</p><p style="text-indent:25px">一次拉伸的特點(diǎn)是一次成型，可以提高生產(chǎn)效率。龍崗精密拉伸五金件的用途和特點(diǎn)</p><p style="text-indent:25px">因?yàn)楹吐认堤砑觿?huì)發(fā)生化學(xué)反應(yīng)，鍍鋅鋼板在選用拉伸油時(shí)應(yīng)注意氯型沖壓油可能發(fā)生白銹的問(wèn)題，所以要選擇潤(rùn)硫型拉伸油可以避免生銹問(wèn)題。不銹鋼是容易產(chǎn)生硬化的材料，要求使用油膜強(qiáng)度高、抗燒結(jié)性好的拉伸油。一般選用含有硫氯復(fù)合型添加劑的拉伸油，在保證極壓性能的同時(shí)避免工件出現(xiàn)毛刺、破裂等問(wèn)題，五金沖壓件的尺寸精度是由公差登記所衡量的，國(guó)標(biāo)規(guī)定分為20個(gè)等級(jí)，從IT01、IT0、IT1、IT2～I(xiàn)T18, 數(shù)字越大，公差等級(jí)（加工精度）越低，尺寸允許的變動(dòng)范圍（公差數(shù)值）越大，加工難度越小龍崗精密拉伸五金件的用途和特點(diǎn)</p><p style="text-indent:25px">深圳市銘豐慶五金制品有限公司坐落深圳市龍崗區(qū)平湖街道辦新木社區(qū)居委會(huì)老村路24號(hào)，交通便利，環(huán)境優(yōu)美，是一家生產(chǎn)型企業(yè)。公司是一家有限責(zé)任公司企業(yè)，以誠(chéng)信務(wù)實(shí)的創(chuàng)業(yè)精神、質(zhì)量高效的管理團(tuán)隊(duì)、精悍的職工隊(duì)伍，努力為廣大用戶提供***的產(chǎn)品。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" ]，價(jià)格合理，品質(zhì)有保證，深受廣大客戶的歡迎。銘豐慶五金制品自成立以來(lái)，一直堅(jiān)持走正規(guī)化、專業(yè)化路線，得到了廣大客戶及社會(huì)各界的普遍認(rèn)可與大力支持。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/708360.html</p></div></div></div></div></div><div id="6y2ce4x" class="page-right twoColRt"><div 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