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class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="om8u4fh" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776411250000/3892454.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="lpgsykr" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>上海專業(yè)硬度計</p><p><span>***更新：</span>2020-06-22 12:29:11</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="znzbnyk" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海尚材試驗機有限公司</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: </span>021-50393010</p><p><span>地址: </span>奉城鎮(zhèn)奉旺路373號</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="eyu82ge" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="beqplxe" class="box"><p><p> 5. 試驗原理和設(shè)備 </p> <p> 5.1 洛氏硬度試驗原理——洛氏壓痕硬度試驗的基本原理見圖1，該試驗按力的施加和卸除分為三個 </p> <p> 步驟。 </p> <p> 第1 步——使壓頭接觸試樣，并施加初試驗力Fo。按規(guī)定的保壓時間保持初試驗力，然后測量壓痕的基準(zhǔn)深度。 </p> <p> 第2 步——壓頭上的力按受控的速率增加附加試驗力F1，達到總試驗力F，并按規(guī)定的保壓時間保持總試驗力。 </p> <p> ASTM E18-2017?1 金屬材料洛氏硬度的標(biāo)準(zhǔn)試驗方法 </p> <p> 5 </p> <p> 第3 步——卸除附加試驗力，返回到初試驗力。按規(guī)定的保壓時間保持初試驗力，然后測量**終的壓痕深度。 </p> <p> 通過初試驗力下的**終和基準(zhǔn)壓痕深度的差值h 得到洛氏硬度值，上海專業(yè)硬度計，上海專業(yè)硬度計。卸除初試驗力后，將壓頭從試樣上移開。 </p> <p> 5.1.1 洛氏試驗總體上分為兩類：洛氏硬度試驗和表面洛氏硬度試驗。兩種試驗分類的明顯差異在于 </p> <p> 所使用的試驗力的不同，上海專業(yè)硬度計。對于洛氏硬度試驗，初試驗力為10kgf(98N)，總試驗力為60 kgf(589N)， </p> <p> 100 kgf(981N)和150kgf(1471N)。而對于表面洛氏硬度試驗，初試驗力為3kgf(29N)，總試驗力為15 </p> <p> kgf(147N)，30 kgf(294N)和45 kgf(441N)。 </p> <p> 5.1.2 洛氏硬度試驗的壓頭包括金剛石球頂圓錐壓頭和規(guī)定直徑的碳化鎢球壓頭。 </p> <p> <br /> </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海專業(yè)硬度計" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776411250000/3892454.jpg"></div><p style="text-indent:25px">XHB-3000數(shù)顯布氏硬度計是精密的機械結(jié)構(gòu)和微機控制閉環(huán)系統(tǒng)的機電一體化產(chǎn)品，儀器取消了砝碼，采用電動加卸試驗力，由‰精度的壓力傳感器進行反饋，CPU控制并能對試驗中損失的試驗力進行自動補償。該儀器采用全新的分辨率彩色觸摸屏，顯示直觀清晰，操作方便，顯示屏背光可調(diào)、具備節(jié)能模式。壓痕可通過測微目鏡直接測量，屏幕上直觀顯示試驗力、壓痕長度、保荷時間、轉(zhuǎn)換標(biāo)尺和多條測試結(jié)果等，動態(tài)顯示加載過程，操作時只要測量完壓痕按目鏡按鈕，即可自動計算出硬度值并顯示在屏幕上。硬度測試結(jié)果實時保存，數(shù)據(jù)分類、可選刪除及打印輸出，自動計算大、**小、平均值，并配有RS232接口供用戶連接電腦輸出。硬度計還可根據(jù)用戶特殊需求配置視屏測量裝置和CCD圖像自動測量系統(tǒng)。應(yīng)用范圍：適用于鑄鐵、鋼材、有色金屬及軟合金等材料的硬度測定，也適用于硬質(zhì)的塑料、電木等某些非金屬材料硬度的測定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海專業(yè)硬度計" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776467089843/4201506.jpg"></div><p style="text-indent:25px">XHRS-150數(shù)顯塑料洛氏硬度計以新穎的大屏幕顯示，具有良好的可靠性、可操作性和直觀性，是集機電于一體的高新技術(shù)產(chǎn)品?？娠@示和設(shè)置當(dāng)前測試標(biāo)尺、試驗力、測試壓頭、保荷時間、硬度轉(zhuǎn)換值、壓頭類型等，其主要功能如下：塑料洛氏硬度標(biāo)尺的選擇；各硬度標(biāo)尺之間的換算值；硬度測試結(jié)果可保存查看及打印輸出，自動計算大、**小、平均值；配有RS232接口供用戶連接電腦輸出。應(yīng)用范圍：硬塑料、硬橡膠，鋁、錫、銅、軟鋼、合成樹脂及摩擦材料。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/349738.html</p></div></div></div></div></div><div id="xfrn7k7" class="page-right twoColRt"><div id="k7ipv8d" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nhd29ir" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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