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id="rkh3aac" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776423798828/843294.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="wqnczgi" 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>遼寧橡膠硬度計</p><p><span>***更新：</span>2020-06-11 14:37:06</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="8ovcj7t" 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="h2suro8" class="page-proshow02"><p class="title">詳細說明</p><div id="vzbt2p2" 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準試驗方法 </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**終和基準壓痕深度的差值h 得到洛氏硬度值。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。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)，遼寧橡膠硬度計，遼寧橡膠硬度計，30 kgf(294N)和45 kgf(441N)，遼寧橡膠硬度計。 </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="遼寧橡膠硬度計" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776423798828/843294.jpg"></div><p style="text-indent:25px">HRS-150L加高型數(shù)顯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：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，自動計算大、**小、平均值；配有RS232接口供用戶連接電腦輸出。本設(shè)備為加高型，使測量大物件更加方便。應(yīng)用范圍：適用于淬火、調(diào)質(zhì)、退火、冷硬鑄件，可鍛鑄件，硬質(zhì)合金鋼、鋁合金、銅合金、軸承鋼等硬度測定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="遼寧橡膠硬度計" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776391748047/954682.jpg"></div><p style="text-indent:25px">MHV-1000Z/V2.0自動顯微維氏硬度計，集成了光學(xué)成像、機械位移、電子控制、數(shù)字成像、圖像分析、計算機處理等多種新專業(yè)技術(shù)，通過計算機主機實現(xiàn)對維氏硬度計和自動載物臺的控制，并將硬度壓痕數(shù)字化成像在計算機屏幕上，再通過自動讀數(shù)、手動讀數(shù)等手段，準確測量金屬及部分非金屬材料及各種膜層、鍍層的顯微硬度、硬化層深度、膜層厚度、兩點間距等。還可拍攝金屬表面形貌并進行固定倍率打印等。這一系統(tǒng)，突破了傳統(tǒng)硬度的測試方式，實現(xiàn)了半自動、高精度、高重復(fù)性的硬度測試，是材料分析的重要設(shè)備。</p><div 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