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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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河北定制O型圈公司,O型圈</p><p><span>***更新：</span>2020-08-18 14:21:35</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="dccbb26" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州思飛硅橡膠制品有限公司</a></p><p><span>聯(lián)系人：</span>關(guān)偉蘭</p><p><span>郵箱: </span>szsf1688@126.com</p><p><span>電話: </span>18662569900</p><p><span>傳真: </span>0512_</p><p><span>網(wǎng)址: </span>http://sfgxjbm.shop.88360.com</p><p><span>手機(jī): </span>0512-65853376</p><p><span>地址: </span>蘇州吳中經(jīng)濟(jì)開(kāi)發(fā)區(qū)旺山工業(yè)園龍翔路西2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="wnyhaec" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="bhbocq3" class="box"><p><p> <br /> </p> <p> O型圈材料的壓縮長(zhǎng)久變形率與溫度有關(guān)。當(dāng)變形率在40%或更大時(shí)，河北定制O型圈公司，即會(huì)出現(xiàn)泄漏，所以幾種膠料的耐熱性界限為：丁腈橡膠70℃，三元乙丙橡膠100℃，氟橡膠140℃。因此各國(guó)對(duì)O型圈的長(zhǎng)久變形作了規(guī)定。中國(guó)標(biāo)準(zhǔn)橡膠材料的O型圈在不同溫度下的尺寸變化見(jiàn)表。同一材料的O型圈，在同一溫度下，截面直徑大的O型圈壓縮長(zhǎng)久變形率較低。在油中的情況就不同了。由于此時(shí)O型圈不與氧氣接觸，般發(fā)生在動(dòng)密封狀態(tài)。O型圈如果裝配的妥善，并且使用條件適當(dāng)，一般不大容易在往復(fù)運(yùn)動(dòng)狀態(tài)下產(chǎn)生滾動(dòng)或扭曲，因?yàn)镺型圈與溝槽的接觸面積大于在滑動(dòng)表面上的摩擦接觸面積，而且O型圈本身的抗拒能力原來(lái)就能阻止扭曲，河北定制O型圈公司。摩擦力的分布也趨向保持O型圈在其溝槽中靜止不動(dòng)，因?yàn)殪o摩擦大于滑動(dòng)摩擦，河北定制O型圈公司，而且溝槽表面的粗糙度一般不如滑動(dòng)表面的粗糙度。 </p> <p> <br /> </p> <p> <br /> O型密封圈 - 橡膠密封件的橡膠O型密封圈。河北定制O型圈公司</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北定制O型圈公司,O型圈" src="https://tyunfile.71360.com/WaterMark/UploadFile/sfgxjbm/637328358602041016/4564732.png"></div><p> 丙烯酸酯橡膠ACM(PolyacrylateRubber)由AlkylEsterAcrylate為主成份聚合而成之彈性體，耐石化油、耐高溫、耐候性均佳，在機(jī)械強(qiáng)度、壓縮變形率及耐水性方面則較弱，比一般耐油膠稍差。一般使用溫度范圍為-25~170℃。優(yōu)點(diǎn)：·適用于汽車(chē)傳動(dòng)油之中·具良好的抗氧化及抗候性·具抗彎曲變型的功·對(duì)油品有較好的抵抗性·適用于汽車(chē)傳動(dòng)系統(tǒng)及動(dòng)力方向盤(pán)之中缺點(diǎn)：·不適用于熱水之中·不適用于煞車(chē)油之中·不具耐低溫的功能·不適用于磷酸酯之中·汽車(chē)傳動(dòng)系統(tǒng)及動(dòng)力系統(tǒng)密封件。聚氨酯橡膠PU(UrethaneRubber)聚氨酯橡膠機(jī)械物性相當(dāng)好，高硬度、高彈性、耐磨耗性均是其它橡膠類(lèi)所難相比；耐老化性、耐臭氧性、耐油性也相當(dāng)好。一般使用溫度范圍為-45~90℃。優(yōu)點(diǎn)：·耐磨、耐高壓缺點(diǎn)：·不耐高溫·工業(yè)上耐高壓、耐磨密封件，如液壓缸密封件。河北定制O型圈公司進(jìn)口O型圈|進(jìn)口O形圈|現(xiàn)貨供應(yīng)英制O型圈規(guī)格尺寸表。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北定制O型圈公司,O型圈" src="https://tyunfile.71360.com/WaterMark/UploadFile/sfgxjbm/637328358470078125/6223922.png"></div><p> 摩擦力與O型圈的應(yīng)用在動(dòng)密封裝置中，摩擦與磨損是O型圈損壞的重要影響因素。磨損程度主要取決于摩擦力的大小。當(dāng)液體壓力微小時(shí)，O型圈摩擦力的大小取決于它的預(yù)壓縮量。當(dāng)工作液體承受壓力時(shí)，摩擦力隨之工作壓力的增加而增大。在工作壓力小于20MPa的情況下，近似地呈線形關(guān)系。壓力大于20MPa時(shí)，隨著壓力的增加，O型圈與金屬表面接觸面積的增加也逐漸緩慢，摩擦力的增加也相應(yīng)緩慢。在正常情況下，O型圈的使用壽命隨著液體壓力的升高將會(huì)近似的呈平方關(guān)系而減小。摩擦力的增加，使得旋轉(zhuǎn)或往復(fù)運(yùn)動(dòng)的軸與O形密封圈之間產(chǎn)生大量的摩擦熱。由于多數(shù)O型圈都是用橡膠制成的，導(dǎo)熱性極差。因此，摩擦熱就會(huì)引起橡膠的老化，導(dǎo)致O型圈實(shí)效，破壞其密封性能。摩擦還會(huì)引起O型圈表面損傷，使壓縮量減小。嚴(yán)重的摩擦?xí)芸煲餙型圈的表面損壞，失去密封性。作氣動(dòng)往復(fù)運(yùn)動(dòng)用密封時(shí)，摩擦熱還會(huì)引起粘著，造成摩擦力進(jìn)一步增加。運(yùn)動(dòng)用密封在低速運(yùn)動(dòng)時(shí)，摩擦阻力還是引起爬行的一個(gè)因素，影響元件和系統(tǒng)的工作性能。所以對(duì)運(yùn)動(dòng)密封來(lái)說(shuō)，摩擦性是重要性能之一。摩擦系數(shù)是摩擦特性的一個(gè)評(píng)價(jià)指標(biāo)，合成橡膠摩擦系數(shù)較大，由于密封在運(yùn)動(dòng)狀態(tài)時(shí)。 </p><p> O型圈用于旋轉(zhuǎn)運(yùn)動(dòng)存在的主要問(wèn)題是焦耳熱效應(yīng)。焦耳熱效應(yīng)使高速的旋轉(zhuǎn)軸與O型圈的接觸處產(chǎn)生磨擦熱，生成的熱量使這些接觸部位的溫度不斷上升，橡膠材料受熱嚴(yán)重變形，壓縮量與伸長(zhǎng)量發(fā)生變化的現(xiàn)象。發(fā)熱還加速密封材料老化，降低了O型圈的使用壽命；破壞密封油膜，由此引起斷油現(xiàn)象，加速密封的磨損。基于上述情況，近年來(lái)國(guó)內(nèi)外旋轉(zhuǎn)運(yùn)動(dòng)用O型圈進(jìn)行了深入的研究。為了避免出現(xiàn)焦耳熱效應(yīng)，關(guān)鍵在于根據(jù)橡膠的性能來(lái)正確地選擇設(shè)計(jì)O型圈的結(jié)構(gòu)參數(shù)，主要是O型圈的拉伸量和壓縮率。根據(jù)實(shí)驗(yàn)，將旋轉(zhuǎn)運(yùn)動(dòng)用O型圈設(shè)計(jì)成內(nèi)徑與旋轉(zhuǎn)軸直徑相等或稍大些，一般大3%~5%，在安裝O型圈時(shí)，從內(nèi)徑向里壓縮，并將斷面的壓縮量也設(shè)計(jì)得小一些，一般約為5%。并且，盡量采用受熱量影響小的密封材料，充分考慮O型圈安裝處的散熱問(wèn)題。這樣就使O型圈的工作情況大為改善，可應(yīng)用于轉(zhuǎn)速達(dá)4m/s的旋轉(zhuǎn)軸的密封。近年來(lái)又出現(xiàn)了耐熱氟橡膠和耐磨聚氨酯橡膠，并且對(duì)橡膠元件工作的焦耳熱效應(yīng)有了更深入的了解，并針對(duì)此問(wèn)題研究解決方案，設(shè)計(jì)出了新的O型圈密封結(jié)構(gòu)，使O型圈能夠更好的應(yīng)用與高速、高壓的旋轉(zhuǎn)運(yùn)動(dòng)。O形密封圈由于其具有體積小。美國(guó)杜邦氟膠O型圈、進(jìn)口O型圈美國(guó)杜邦氟膠O型圈。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北定制O型圈公司,O型圈" src="https://tyunfile.71360.com/WaterMark/UploadFile/sfgxjbm/637328528129531250/607072.png"></div><p> 橡膠O型圈—硫化硫化是橡膠O型圈生產(chǎn)過(guò)程結(jié)束前的一道主要工序，一般使用平板硫化或烘箱二段硫化。在實(shí)際生產(chǎn)中，二段硫化是橡膠制品達(dá)到一定的硫化程度之后除去熱源繼續(xù)進(jìn)行加熱硫化的工藝，很多橡膠O型圈生產(chǎn)廠家選擇二段硫化。以三元乙丙橡膠O型圈為例，通常在常溫下硫化℃硫化，再提高硫化溫度至120℃繼續(xù)硫化，溫度加至150℃繼續(xù)硫化。橡膠O型圈生產(chǎn)過(guò)程中，含有硅橡膠、氟橡膠或丙烯酸酯橡膠的O型圈更適合選擇二段硫化工藝。橡膠O型圈生產(chǎn)過(guò)程主要包括烘膠、切膠，塑煉、混煉、濾膠、硫化成型等，橡膠制品廠家需要根據(jù)膠料加工工藝性能需求合理調(diào)整生產(chǎn)工藝；使用再生膠降低橡膠O型圈生產(chǎn)成本時(shí)，橡膠制品廠家還需要結(jié)合再生膠特點(diǎn)，選擇原膠與再生膠并用時(shí)，需要將原膠充分塑煉之后再與再生膠進(jìn)行混煉，尤其是天然橡膠與硬質(zhì)丁腈橡膠。 O型圈-FDA食品級(jí)O型圈--蘇州思飛。上海丁腈橡膠O型圈銷(xiāo)售廠家</p><p style="text-indent:25px">耐高溫硅膠防水o型密封圈-燈具密封圈現(xiàn)貨批發(fā)。河北定制O型圈公司</p><p> 工作原理1、用于靜密封時(shí)的密封原理在靜密封中以O(shè)型圈應(yīng)用較多。如果設(shè)計(jì)、使用正確，O形密封圈在靜密封中可以實(shí)現(xiàn)無(wú)泄漏的密封。O形密封圈裝入密封槽后，其截面承受接觸壓縮應(yīng)力而產(chǎn)生彈性變形。對(duì)接觸面產(chǎn)生一定的初始接觸壓力Po。即使沒(méi)有介質(zhì)壓力或者壓力很小，O形密封圈靠自身的彈性力作用而也能實(shí)現(xiàn)密封；當(dāng)容腔內(nèi)充入有壓力的介質(zhì)后，在介質(zhì)壓力的作用下，O形密封圈發(fā)生位移，移向低壓側(cè)，同時(shí)其彈性變形進(jìn)一步加大，填充和封閉間隙δ。此時(shí)，坐用于密封副偶合面的接觸壓力上升為Pm：Pm=Po+Pp式中Pp——經(jīng)O型圈傳給接觸面的接觸壓力（）Pp=K·PK——壓力傳遞系數(shù)，對(duì)于橡膠制O形密封圈K=1；P——被密封液體的壓力（）。從而增加了密封效果。由于一般K≥1，所以Pm＞P。由此可見(jiàn)，只要O形密封圈存在初始?jí)毫?，就能?shí)現(xiàn)無(wú)泄漏的密封。這種靠介質(zhì)本身壓力來(lái)改變O形密封圈接觸狀態(tài)，使之實(shí)現(xiàn)密封的性質(zhì)，稱(chēng)為自封作用。理論上，壓縮變形即使為零，在油壓力下也能密封，但實(shí)際上O形密封圈安裝時(shí)可能會(huì)有偏心。所以，O型圈裝入密封溝槽后，其斷面一般受到7%—30%的壓縮變形。靜密封取較大的壓縮率值，動(dòng)密封取較小的壓縮率值。這是因?yàn)楹铣上鹉z在低溫下要壓縮。河北定制O型圈公司</p><p style="text-indent:25px">蘇州思飛硅橡膠制品有限公司始建于2006-10-26，坐落于蘇州吳中經(jīng)濟(jì)開(kāi)發(fā)區(qū)旺山工業(yè)園龍翔路西2號(hào)，現(xiàn)有員工51~100人余人。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，以建蘇州思飛硅橡膠制品有限公明星產(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)。公司以用心服務(wù)為**價(jià)值,希望通過(guò)我們的專(zhuān)業(yè)水平和不懈努力,將加工、銷(xiāo)售：新能源硅膠制品、模壓硅膠制品、電子、汽車(chē)、生活美容硅膠制品、密封圈、腳墊、按鍵等硅膠制品、橡膠密封制品、橡膠配件制品；銷(xiāo)售：模具、海綿、珍珠棉、絕緣材料；自營(yíng)和代理各類(lèi)商品及技術(shù)的進(jìn)出口業(yè)務(wù).等業(yè)務(wù)進(jìn)行到底。蘇州思飛始終以質(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[ "密封圈", "硅膠按鍵", "腳墊", "硅橡膠訂制品" ]。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/957239.html</p></div></div></div></div></div><div id="g7uisdc" class="page-right twoColRt"><div id="7yhbvpo" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yosb36h" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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