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<meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u 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id="j8fd2hy" class="leftbox clearfix"><h1>保定螺栓商家信息推薦柳州市華僑緊固件供應(yīng)</h1><div id="zkl2rpn" class="proBig"><div id="83cy73l" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gxxfty0013/637389547995455487/9656744.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="33qht88" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/gxxfty0013/637389547995455487/9656744.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="u77g8cy" 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>廣西壯族自治區(qū)</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>保定螺栓商家,螺栓</p><p><span>***更新：</span>2020-12-19 06:08:15</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="cn8fky3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">柳州市華僑緊固件有限公司</a></p><p><span>聯(lián)系人：</span>唐忠玉</p><p><span>郵箱: </span>2282305088@qq.com</p><p><span>電話: </span>13907724831</p><p><span>傳真: </span>0772_</p><p><span>網(wǎng)址: </span>http://www.hqfastner.com</p><p><span>手機(jī): </span>0772-7507381</p><p><span>地址: </span>廣西穿山鎮(zhèn)興泰路8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="yg4xypt" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="zcqwiek" class="box"><p>螺栓性能等級(jí)的含義 <p> 鋼結(jié)構(gòu)連接用螺栓性能等級(jí)分3.6、4.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9等10余個(gè)等級(jí)，其中8.8級(jí)及以上螺栓材質(zhì)為低碳合金鋼或中碳鋼并經(jīng)熱處理（淬火、回火），通稱為**度螺栓，其余通稱為普通螺栓。螺栓性能等級(jí)標(biāo)號(hào)有兩部分?jǐn)?shù)字組成，分別表示螺栓材料的公稱抗拉強(qiáng)度值和屈強(qiáng)比值。例如：性能等級(jí)4.6級(jí)的螺栓，其含義是： 1、螺栓材質(zhì)公稱抗拉強(qiáng)度達(dá)400MPa級(jí)； 2、螺栓材質(zhì)的屈強(qiáng)比值為0.6； 3、螺栓材質(zhì)的公稱屈服強(qiáng)度達(dá)400×0，保定螺栓商家.6=240MPa級(jí) 性能等級(jí)10.9級(jí)**度螺栓，其材料經(jīng)過(guò)熱處理后，能達(dá)到： 1、螺栓材質(zhì)公稱抗拉強(qiáng)度達(dá)1000MPa級(jí)； 2、螺栓材質(zhì)的屈強(qiáng)比值為0.9； 3、螺栓材質(zhì)的公稱屈服強(qiáng)度達(dá)1000×0，保定螺栓商家.9=900MPa級(jí) 螺栓性能等級(jí)的含義是國(guó)際通用的標(biāo)準(zhǔn)，保定螺栓商家，相同性能等級(jí)的螺栓，不管其材料和產(chǎn)地的區(qū)別，其性能是相同的，設(shè)計(jì)上只選用性能等級(jí)即可。強(qiáng)度等級(jí)所謂8.8級(jí)和10.9級(jí)是指螺栓的抗剪切應(yīng)力等級(jí)為8.8GPa和10.9GPa 10.9s的s 表示鋼結(jié)構(gòu) </p> <p> <br /> 螺栓怎么處理表面污漬？保定螺栓商家</p> <span style="display:none;"></span><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="保定螺栓商家,螺栓" src="https://tyunfile.71360.com/UploadFile/gxxfty0013/637389547995455487/9656744.jpg"></div><p> 螺栓按連接的受力方式分：分普通的和有鉸制孔用的。 </p> <p> <br /> </p> <p> 螺栓按頭部形狀分：有六角頭的，圓頭的，方形頭的，沉頭的等等。其中六角頭是常用的，沉頭用在要求連接的地方。 </p> <p> <br /> </p> <p> 螺栓按螺紋的牙型分為粗牙和細(xì)牙兩類，粗牙型在螺栓的標(biāo)志中不顯示。螺栓按照性能等級(jí)分為3.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9八個(gè)等級(jí)。 </p> <p> <br /> </p> <p> 其中8.8級(jí)以上(含8.8級(jí))螺栓材質(zhì)為低碳合金鋼或中碳鋼并經(jīng)熱處理(淬火+回火)，通稱**度螺栓，8.8級(jí)以下(不含8.8級(jí))通稱普通螺栓。 </p> <p> <br /> </p> <p> 普通螺栓按照制作精度可分為A、B、C三個(gè)等級(jí)，A、B級(jí)為精制螺栓，C級(jí)為粗制螺栓。對(duì)于鋼結(jié)構(gòu)用連接螺栓，除特別注明外，一般為普通粗制C級(jí)螺栓。 </p> <p> <br /> </p> <p> 螺母規(guī)格表是具體詳細(xì)的把各種各式的螺母統(tǒng)一起來(lái)，用表格把螺母的一些規(guī)格細(xì)分出來(lái) 。螺母有很多種類，也有不同材質(zhì)的螺母。 </p> <p> <br /> </p> <p> 每類螺母都有不同的規(guī)格，每種螺絲也有它具有的機(jī)械性能和作用。 </p> <p> <br /> 保定螺栓商家螺栓性能等級(jí)的含義鋼結(jié)構(gòu)連接用螺栓性能等級(jí)分幾種？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="保定螺栓商家,螺栓" src="https://tyunfile.71360.com/UploadFile/gxxfty0013/637389547992818733/7700245.jpg"></div><p> 根據(jù)螺栓的強(qiáng)度級(jí)別采用不同的材料： </p> <p> <br /> </p> <p> 目前市場(chǎng)上標(biāo)準(zhǔn)件主要有碳鋼、不銹鋼、銅三種材料。 </p> <p> <br /> </p> <p> 碳鋼。我們以碳鋼料中碳的含量區(qū)分低碳鋼，中碳鋼和高碳鋼以及合金鋼。 </p> <p> <br /> </p> <p> 1、低碳鋼C%≤0.25% 國(guó)內(nèi)通常稱為A3 鋼。國(guó)外基本稱為1008，1015，1018，1022 等。主要用于4.8 級(jí)螺栓及4 級(jí)螺母、小螺絲等無(wú)硬度要求的產(chǎn)品。（注：鉆尾釘主要用1022 材料。） </p> <p> <br /> </p> <p> 2、中碳鋼0.25%<C%≤0.45% 國(guó)內(nèi)通常稱為35 號(hào)、45 號(hào)鋼，國(guó)外基本稱為1035，CH38F，1039，40ACR 等。主要用于8 級(jí)螺母、8.8 級(jí)螺栓及8.8 級(jí)內(nèi)六角產(chǎn)品。 </p> <p> <br /> </p> <p> 3、高碳鋼C%>0.45%。目前市場(chǎng)上基本沒(méi)使用 </p> <p> <br /> </p> <p> 4、合金鋼：在普碳鋼中加入合金元素，增加鋼材的一些特殊性能：如35、40 鉻鉬、SCM435， </p> <p> 10B38。芳生螺絲主要使用SCM435 鉻鉬合金鋼，主要成分有C、Si、Mn、P、S、Cr、Mo。 </p> <p> <br /> </p><p> 法蘭螺栓分類 </p> <p> <br /> </p> <p> 1、六角頭部類型：一種是平腦的，另一種是凹腦的。 </p> <p> <br /> </p> <p> 2、表面顏色類別：根據(jù)不同需要，表面有鍍白、軍綠、彩黃、耐腐蝕的達(dá)克羅。 </p> <p> <br /> </p> <p> 3、法蘭盤(pán)類別：根據(jù)法蘭螺栓的使用位置不同，盤(pán)的大小要求各不相同，另有平底和帶齒之分，帶齒的起防滑作用。 </p> <p> <br /> </p> <p> 4、按連接的受力方式,有普通的和有鉸制孔用的.鉸制孔用的法蘭螺栓要和孔的尺寸配合,用在受橫向力時(shí)。 </p> <p> <br /> </p> <p> 另外為了滿足安裝后鎖緊的需要,有桿部有孔的,這些孔可以使螺栓受振動(dòng)時(shí)不至松脫. </p> <p> <br /> </p> <p> 有的法蘭螺栓沒(méi)螺紋的光桿部位要做,叫細(xì)桿法蘭螺栓.這種法蘭螺栓有利于受變力的聯(lián)結(jié). 螺栓都是用什么材料制作的？</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="保定螺栓商家,螺栓" src="https://tyunfile.71360.com/UploadFile/gxxfty0013/637389547993482809/2482300.jpg"></div><p style="text-indent:25px">預(yù)緊力的大小與螺栓的擰緊力矩、螺栓與螺母之間的摩擦力、螺母與被聯(lián)接件之間的摩擦力有關(guān),因此跟潤(rùn)滑情況有關(guān)系，至于公式有很多，大部分都是經(jīng)驗(yàn)公式之類的沒(méi)有太大的關(guān)系。非常簡(jiǎn)單，螺栓預(yù)緊力=夾緊力+外部載荷當(dāng)外部載荷為零時(shí)，夾緊力就是螺栓預(yù)緊力，當(dāng)工件收到張力時(shí)，也就是有外部載荷，螺栓只要沒(méi)有發(fā)生形變，那么螺栓預(yù)緊力就是不變的，但是夾緊力在變小當(dāng)外部載荷大于螺栓預(yù)緊力時(shí)，螺栓被再次拉伸，此時(shí)工件分離，沒(méi)有任何夾緊力五分送來(lái)。螺栓：大拉力=10000N，小拉力2000N 被連接件：小壓力=10000N，大壓力18000N 題目是求工作中螺栓及被連接件所受（力）的大與小值，只算內(nèi)力的話，沒(méi)有用。什么是剪力螺栓？有什么作用？蚌埠品質(zhì)螺栓</p><p style="text-indent:25px">六角頭螺栓分外六角螺栓和內(nèi)六角螺栓，是常用的緊固件，主要用作機(jī)械設(shè)備的緊固。保定螺栓商家</p><p> 螺栓的分類有： </p> <p> <br /> </p> <p> 一、螺栓按連接的受力方式分：分普通的和有鉸制孔用的。 </p> <p> <br /> </p> <p> 二、螺栓按頭部形狀分：有六角頭的，圓頭的，方形頭的，沉頭的等等。 </p> <p> <br /> </p> <p> 三、螺紋按長(zhǎng)度分為全螺紋和非全螺紋兩類。 </p> <p> <br /> </p> <p> 四、按螺紋的牙型分為粗牙和細(xì)牙兩類，粗牙型在螺栓的標(biāo)志中不顯示。 </p> <p> <br /> </p> <p> 五、螺栓按照性能等級(jí)分為3.6、4.8、5.6、6.8、8.8、9.8、10.9、12.9八個(gè)等級(jí)，其中8.8級(jí)以上(含8.8級(jí))螺栓材質(zhì)為低碳合金鋼或中碳鋼并經(jīng)熱處理(淬火+回火)，通稱**度螺栓，8.8級(jí)以下(不含8.8級(jí))通稱普通螺栓。 </p> <p> <br /> </p> <p> 六、普通螺栓按照制作精度可分為A、B、C三個(gè)等級(jí)，A、B級(jí)為精制螺栓，C級(jí)為粗制螺栓。 </p> <p> <br /> 保定螺栓商家</p><p style="text-indent:25px">柳州市華僑緊固件有限公司致力于五金、工具，是一家生產(chǎn)型的公司。柳州華僑緊固件致力于為客戶提供良好的緊固件，螺栓，標(biāo)準(zhǔn)件，螺絲，一切以用戶需求為中心，深受廣大客戶的歡迎。公司秉持誠(chéng)信為本的經(jīng)營(yíng)理念，在五金、工具深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，打造五金、工具良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2468174.html</p></div></div></div></div></div><div id="aymsyzv" class="page-right twoColRt"><div id="zsokqmi" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qualvrs" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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