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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="iti8zlj" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776472626953/2755765.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="p8h90tw" 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>帶電腦軟件硬度計(jì)型號</p><p><span>***更新：</span>2020-05-25 10:33:47</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="thvtxdm" 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</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="av3rbhp" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="s7dehra" class="box"><p><p> 5. 試驗(yàn)原理和設(shè)備 </p> <p> 5.1 洛氏硬度試驗(yàn)原理——洛氏壓痕硬度試驗(yàn)的基本原理見圖1，該試驗(yàn)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(yàn)力Fo。按規(guī)定的保壓時間保持初試驗(yàn)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(yàn)力F1，達(dá)到總試驗(yàn)力F，并按規(guī)定的保壓時間保持總試驗(yàn)力。 </p> <p> ASTM E18-2017?1 金屬材料洛氏硬度的標(biāo)準(zhǔn)試驗(yàn)方法 </p> <p> 5 </p> <p> 第3 步——卸除附加試驗(yàn)力，返回到初試驗(yàn)力，帶電腦軟件硬度計(jì)型號。按規(guī)定的保壓時間保持初試驗(yàn)力，然后測量**終的壓痕深度。 </p> <p> 通過初試驗(yàn)力下的**終和基準(zhǔn)壓痕深度的差值h 得到洛氏硬度值。卸除初試驗(yàn)力后，將壓頭從試樣上移開。 </p> <p> 5.1.1 洛氏試驗(yàn)總體上分為兩類：洛氏硬度試驗(yàn)和表面洛氏硬度試驗(yàn)。兩種試驗(yàn)分類的明顯差異在于 </p> <p> 所使用的試驗(yàn)力的不同。對于洛氏硬度試驗(yàn)，初試驗(yàn)力為10kgf(98N)，總試驗(yàn)力為60 kgf(589N)， </p> <p> 100 kgf(981N)和150kgf(1471N)。而對于表面洛氏硬度試驗(yàn)，初試驗(yàn)力為3kgf(29N)，總試驗(yàn)力為15 </p> <p> kgf(147N)，帶電腦軟件硬度計(jì)型號，30 kgf(294N)和45 kgf(441N)，帶電腦軟件硬度計(jì)型號。 </p> <p> 5.1.2 洛氏硬度試驗(yàn)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="帶電腦軟件硬度計(jì)型號" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776472626953/2755765.jpg"></div><p style="text-indent:25px">HRM-45DT電動表面洛氏硬度計(jì)采用自動加卸試驗(yàn)力機(jī)構(gòu)，試驗(yàn)力變換由變荷手輪的旋轉(zhuǎn)而獲得，可選擇保荷時間，操作簡便迅速，除表盤對零外，沒有人為的操作誤差，具有很高的靈敏度、穩(wěn)定性。應(yīng)用范圍：適用于表面淬火鋼，材料表面熱處理和化學(xué)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。技術(shù)參數(shù)：型號HRM-45DT初試驗(yàn)力3kgf()總試驗(yàn)力15kgf(),30kgf(),45kgf()壓頭規(guī)格金剛石洛氏壓頭，Φ試驗(yàn)力施加方法自動（加載/保荷/卸載）硬度讀取表面洛氏表盤讀取硬度值。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="帶電腦軟件硬度計(jì)型號" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776623173828/1132643.jpg"></div><p style="text-indent:25px">601MHB數(shù)顯小負(fù)荷布氏硬度計(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，具有良好的直觀性、可操作性和可靠性，是測試小負(fù)荷布氏硬度的理想產(chǎn)品。本儀器具備8級試驗(yàn)力，9種測試的布氏標(biāo)尺任意選擇；具備了5×和10×兩組物鏡，且都能參與測量；物鏡和壓頭間自動切換；可預(yù)置試驗(yàn)力保荷時間、調(diào)節(jié)測量光源的強(qiáng)弱；自動顯示測量壓痕長度、硬度值、測量次數(shù)等；數(shù)據(jù)結(jié)果可通過內(nèi)置打印機(jī)輸出，并配有RS232接口供用戶連接電腦輸出；還可根據(jù)用戶特殊要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="帶電腦軟件硬度計(jì)型號" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776473212890/4230142.jpg"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/36885.html</p></div></div></div></div></div><div id="56i1szu" class="page-right twoColRt"><div id="vqdwfku" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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