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src="http://tyunfile.71360.com/UploadFile/shangcai/637127776515878906/8922474.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="aik87ah" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776515878906/8922474.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yhzbqco" 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>維氏硬度測試儀質(zhì)量,硬度測試儀</p><p><span>***更新：</span>2021-02-04 14:05:43</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="zmegab8" 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="dqnuwif" class="page-proshow02"><p class="title">詳細說明</p><div id="ivxzwif" class="box"><p><p style="text-indent:25px">5.5 試驗循環(huán)的檢測 5.5.1 硬度計的試驗循環(huán)宜由其制造者在生產(chǎn)時進行檢測，維氏硬度測試儀質(zhì)量，或當硬度計經(jīng)過修理后可能會影響到試驗循環(huán)時進行檢測。在其他時間對試驗循環(huán)的檢測見表4的規(guī)定。 5.5.2 應檢測試驗循環(huán)以符合GB/T 231.1確定的試驗循環(huán)時間，并要考慮與時間測量有關(guān)的測量不確定度，維氏硬度測試儀質(zhì)量。 6 間接檢驗 6.1 宜在（23±5）℃溫度范圍內(nèi)，使用按GB/T 231.3標定的標準硬度塊進行間接檢驗。如果在此溫度范圍以外進行檢驗，維氏硬度測試儀質(zhì)量，則應在檢驗報告中注明。標準塊的試驗面和支承面與壓頭表面不應有任何外來的或腐蝕性的污物。維氏硬度計：主要是用于測黑色金屬、有色金屬、硬質(zhì)合金（如鋁合金）及表面滲碳、滲氮層的硬度，用HV表示。維氏硬度測試儀質(zhì)量</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="維氏硬度測試儀質(zhì)量,硬度測試儀" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776515878906/8922474.jpg"></div><p style="text-indent:25px">在檢驗硬度計以前，應對其進行檢查以確保硬度計按制造者的說明書正確地安裝。宜特別檢查： a) 安裝球壓頭的主軸在其導向裝置中能正?；瑒樱?b) 在球座中裝上校準過程中所使用的球并將其牢固地安裝到主軸孔中； c) 施加和卸除試驗力時，無沖擊、振動或過沖且不影響讀數(shù)； d) 對于壓痕直徑測量裝置與主機為一體的硬度計： 1）從卸除試驗力到測量壓痕模式的轉(zhuǎn)換過程不影響壓痕直徑測量； 2）照明不影響直徑測量； 3）需要時，壓痕中心要位于視場中心。維氏硬度測試儀質(zhì)量測量系統(tǒng)的使用和存放，應避免灰塵，潮濕和有腐蝕性氣體的環(huán)境中。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="維氏硬度測試儀質(zhì)量,硬度測試儀" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776452792968/2808977.jpg"></div><p style="text-indent:25px">HRMS-45數(shù)顯表面洛氏硬度計是集機、電一體化的高新技術(shù)產(chǎn)品，可進行表面洛氏硬度測試。該儀器造型新穎、美觀，LCD液晶屏可顯示和設(shè)置當前測試標尺、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：表面洛氏硬度標尺的選擇；各硬度標尺之間的換算值；硬度測試結(jié)果可保存查看及打印輸出，自動計算比較大、**小、平均值；配有RS232接口供用戶連接電腦輸出。應用范圍：適用于表面淬火鋼，材料表面熱處理和化學處理層，銅、鋁合金，薄板、鍍鋅、鍍鉻、鍍錫材料，軸承鋼，冷硬鑄件等。</p><p style="text-indent:25px">6.2 金剛石壓頭 6.2.1 總則為檢驗金剛石壓頭的可靠性，應按本部分的要求對每個壓頭進行直接和間接的校準與檢驗。 6.2.2 金剛石壓頭的直接校準與檢驗 6.2.2.1 與0.3 mm壓入深度范圍相對應的金剛石圓錐面和頂端球面應拋光，兩個面的結(jié)合應光滑相切。兩個面應無表面缺痕。 6.2.2.2 壓頭的形狀可通過直接測量或光學測量進行檢驗。檢驗應在至少4個等間隔的不同軸截面上進行（例如0°、45°、90°、135°）。也可以使用準直儀進行測量，在這種情況下，宜在至少4個中心角上進行測量，且應包括120°的中心角。金剛石壓頭頂端球面與圓錐結(jié)合的位置會因頂端球面半徑和圓錐角度的不同而改變。理論上一個完美壓頭的幾何形狀的結(jié)合點，沿壓頭軸線的一條垂線測量，應位于距壓頭軸線100 μm的位置。為避免在頂端球面半徑和圓錐角度測量中包含二者的結(jié)合區(qū)域，可忽略金剛石表面80 μm到120 μm之間的部分。里氏硬度計是壓入和回跳硬度值組合的一種測試方式。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="維氏硬度測試儀質(zhì)量,硬度測試儀" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776425839843/286410.jpg"></div><p style="text-indent:25px">2 洛氏與表面洛氏硬度標準 2.1 試驗原理 GB/T 230.1-2018《金屬材料洛氏硬度試驗第1部分：試驗方法》規(guī)定的洛氏硬度是指，用金剛石圓錐或碳化物合金圓球壓頭，在規(guī)定的初始試驗力F0作用下壓入試樣表面，得到測量基準面，然后施加主試驗力F1，經(jīng)規(guī)定時間后卸除主試驗力恢復至初始試驗力F0，得到殘余壓痕深度D。D越大表明材料越軟，相應計算得到的洛氏硬度值越小。圖1 洛氏硬度試驗原理 Fig.1 The principle of Rockwell hardness 根據(jù)主試驗力的不同選擇，即表面洛氏硬度采用15、30、45kg對應的力(舊稱：公斤力)以及洛氏硬度采用的60、100與150 kg力，壓頭形狀包括金剛石圓錐以及1/16英寸與1/8英寸合金圓球。載荷與壓頭組合，可構(gòu)成HRA 、HRC、 HRD… HRBW、 HRFW、HR15TW、HR15N…等15類標尺。不同標尺得到的洛氏硬度值不可直接比較。采用便攜式里氏硬度計進行硬度檢測的實用價值在于不必破壞工件并可成批檢驗零件。端淬硬度測試儀技術(shù)參數(shù)</p><p style="text-indent:25px">硬度計做好周期檢定工作，每年至少一次以保證硬度計的準確性。維氏硬度測試儀質(zhì)量</p><p style="text-indent:25px">A1.4 間接檢定 A1.4.1 試驗機的間接檢定應依表A1.1 給出的計劃進行。間接檢定的頻率可能超過表A1.1 規(guī)定的頻率，并且宜依據(jù)試驗機的使用情況來作檢定。 A1.4.2 在進行下一次間接檢定之前，應對試驗機將會用到的每一個試驗力和每一個壓頭作檢定。采用未按表A1.1 給出的計劃作鑒定的試驗力和壓頭組合進行的硬度試驗不符合本標準要求。 A1.4.3 間接檢定用的標定試塊應符合附錄A4 要求。注A1.4—應注意的是，并沒有適用于所有幾何形狀、材料或硬度范圍的合適標定試塊。 A1.4.4 間接檢定用的壓頭應符合附錄A3 要求。 A1.4.5 調(diào)整前狀態(tài)—建議將試驗機的調(diào)整前狀態(tài)作為間接檢定的一部分來評價。這對記錄試驗機的歷史性能十分重要。該程序宜由檢定機構(gòu)在進行任何清理、維護、調(diào)整或維修之前執(zhí)行。維氏硬度測試儀質(zhì)量</p><p> 上海尚材試驗機有限公司是專業(yè)生產(chǎn)各種類型金屬、非金屬材料硬度計的公司，是ISO9001-2015國際質(zhì)量體系認證企業(yè)，是上海市****，是全國鋼標準化技術(shù)委員會力學分會委員單位之一，并參與了洛氏、布氏和維氏硬度試驗國家標準的修編。公司主要開發(fā)布氏、洛氏、顯微、維氏硬度計，共有30多個品種，產(chǎn)品質(zhì)量穩(wěn)定、功能完善，****各地并出口歐美、中東、亞洲、非洲、澳洲等國際市場，深受國內(nèi)外商客青睞。 </p> <p> 公司擁有十數(shù)年穩(wěn)定研發(fā)團隊，業(yè)內(nèi)專業(yè)顧問團隊。20畝生產(chǎn)基地，5棟標準工業(yè)廠房，坐擁長三角地理優(yōu)勢，堅持5S管理多年。擁有完備的機加工車間，CNC、數(shù)控機床等各類加工設(shè)備逾50臺，專業(yè)技術(shù)工人近80人，制造時間和品質(zhì)掌控在手。公司高度關(guān)注“技術(shù)創(chuàng)新、市場營銷、生產(chǎn)管理、企業(yè)文化”四大領(lǐng)域，將不斷推行“標準化、科學化、精細化”的現(xiàn)代管理方式，目標將自身打造成“高品位、高效率、高質(zhì)量、優(yōu)服務(wù)”的現(xiàn)代先進制造企業(yè)。 </p> <p> 在“中國制造2025”強國戰(zhàn)略**下，我們立志為自己在世界硬度計行業(yè)占據(jù)一席之地盡全部力量；為振興中國民營制造業(yè)，詮釋“MADE IN CHINA”新概念盡到自己綿薄之力！ </p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3160916.html</p></div></div></div></div></div><div id="lo7yqxe" class="page-right twoColRt"><div id="l2wahtq" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="mbtvce8" 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" class="vcenter" 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