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歡迎咨詢上海尚材試驗(yàn)機(jī)供應(yīng)</h1><div id="vkhegix" class="proBig"><div id="n32qif8" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776398339843/8783325.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wfrtlsh" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776398339843/8783325.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="apm3wyh" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>四川專業(yè)硬度計(jì)</p><p><span>***更新：</span>2020-06-01 16:23:48</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="7fcokri" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海尚材試驗(yàn)機(jī)有限公司</a></p><p><span>聯(lián)系人：</span>衛(wèi)志清</p><p><span>郵箱: </span>shangcaisy@163.com</p><p><span>電話: </span>17765160728</p><p><span>傳真: </span>021_57520236</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-50393010</p><p><span>地址: </span>奉城鎮(zhèn)奉旺路373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="hcumovh" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ztqs7ol" class="box"><p><p> 7. 試驗(yàn)步驟 </p> <p> 7.1 在進(jìn)行硬度測試前，應(yīng)按照A1.5 對硬度機(jī)進(jìn)行日常檢驗(yàn)。只允許在硬度塊的已校準(zhǔn)表面上進(jìn)行 </p> <p> 硬度測量。 </p> <p> 7.2 洛氏硬度試驗(yàn)應(yīng)在10~35℃(50~95℉）范圍的環(huán)境溫度進(jìn)行，四川專業(yè)硬度計(jì)。洛氏硬度試驗(yàn)的操作者應(yīng)注意測試 </p> <p> 材料的溫度和硬度機(jī)的溫度可能影響試驗(yàn)結(jié)果。因此，使用者應(yīng)確保測試溫度不會(huì)對硬度測量產(chǎn)生 </p> <p> 負(fù)面影響。 </p> <p> 7.3 試樣應(yīng)具有剛性支撐，以使測試表面的位移降到**?。ㄒ?.5）。 </p> <p> 7.4 測試周期——本標(biāo)準(zhǔn)對洛氏試樣周期的說明包括對周期的5 個(gè)單獨(dú)部分提出的建議或要求。圖2 </p> <p> 以洛氏C 標(biāo)尺試驗(yàn)為例，給出了這些部分的說明，定義如下： </p> <p> (1) 接觸速率，vA—壓頭接觸測試材料的速率。 </p> <p> (2) 初試驗(yàn)力保持時(shí)間tPF——從初試驗(yàn)力完全加載開始，到***次測量壓痕基準(zhǔn)深度時(shí)結(jié)束的 </p> <p> 保持時(shí)間（同見7.4.1.3）。 </p> <p> (3) 主試驗(yàn)力施加時(shí)間，tTA——施加主試驗(yàn)力達(dá)到總試驗(yàn)力的時(shí)間。 </p> <p> (4) 總試驗(yàn)力保持時(shí)間，四川專業(yè)硬度計(jì)，tTF——總試驗(yàn)力完全加載的保持時(shí)間，四川專業(yè)硬度計(jì)。 </p> <p> (5) 彈性恢復(fù)保持時(shí)間，tR——在初試驗(yàn)力作用下的保持時(shí)間，從主試驗(yàn)力完全卸除開始，到測 </p> <p> 量壓痕第二次即**終深度時(shí)結(jié)束。 </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川專業(yè)硬度計(jì)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776398339843/8783325.jpg"></div><p style="text-indent:25px">402SXV數(shù)顯顯微維氏硬度計(jì)是光、機(jī)、電一體化的高新技術(shù)產(chǎn)品，它造型新穎、美觀，內(nèi)部結(jié)構(gòu)多用不銹鋼零件組成，性能更佳。在大屏幕上能更加直觀地顯示試驗(yàn)方法、試驗(yàn)力、壓痕長度、保荷時(shí)間、測量次數(shù)、轉(zhuǎn)換標(biāo)尺、日期時(shí)間，操作時(shí)只要測量壓痕按目鏡按鈕，即可自動(dòng)計(jì)算出硬度值并顯示在屏幕上。具有上下限報(bào)警功能，數(shù)據(jù)結(jié)果可以保存通過表格查看，也可通過內(nèi)置打印機(jī)輸出，并配有RS232接口供用戶連接電腦輸出?？蛇x配努氏壓頭進(jìn)行努氏硬度測量，也可選配LCD視屏測量裝置和CCD圖像自動(dòng)測量系統(tǒng)。應(yīng)用范圍：黑色金屬、有色金屬、IC薄片、表面涂層、層壓金屬；玻璃、陶瓷、瑪瑙、寶石、薄塑料等；碳化層和淬火硬化層的深度及梯度的硬度測試。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川專業(yè)硬度計(jì)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776392939453/6623374.jpg"></div><p> 硬度是材料機(jī)誡性能的重要指標(biāo)之一，而硬度測試是判斷金屬材料或零件質(zhì)量的重要手段。由于金屬的硬度與其它機(jī)誡性能有相互對應(yīng)關(guān)系，因此大多數(shù)金屬材料可以通過測定硬度值近似地推算出其它機(jī)誡性能，如強(qiáng)度、疲勞、蠕變和磨損等。布氏硬度測試，通過選擇試驗(yàn)力，使用不同的球壓頭，基本上可以滿足所有的金屬材料硬度的測定。本儀器采用精密結(jié)構(gòu)設(shè)計(jì)，試驗(yàn)力施加由力傳感器直接控制，使整機(jī)結(jié)構(gòu)緊湊，加卸試驗(yàn)力平穩(wěn)、準(zhǔn)確。在電氣上由CPU控制試驗(yàn)過程，物鏡和壓頭間采用自動(dòng)切換，切換定位采用機(jī)械與電子雙重配合，使定位精度更高。本儀器適用于測量鑄鐵、有色金屬及合金材料，各種退火、調(diào)質(zhì)處理后的鋼材，特別是較軟的金屬如：鋁、鉛、錫等材料測試的硬度值更正確。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川專業(yè)硬度計(jì)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776404941406/5970398.jpg"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/110335.html</p></div></div></div></div></div><div id="zqi337v" class="page-right twoColRt"><div id="kevnu7e" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="et8yqzl" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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