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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="qkholn8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="burtk2w" class="box"><p><p style="text-indent:25px">5.2 試驗(yàn)力的檢測 5.2.1 對硬度計(jì)工作范圍內(nèi)的每一個試驗(yàn)力均應(yīng)進(jìn)行檢測。當(dāng)通過杠桿或利用機(jī)械效益的其他裝置以開環(huán)方式施加力時，應(yīng)選擇在試驗(yàn)過程中壓頭整個移動范圍內(nèi)至少三個間隔相等的位置對每個試驗(yàn)力進(jìn)行檢測。 5.2.2 應(yīng)在壓頭的每個位置上對每個試驗(yàn)力進(jìn)行三次測量，每次測量即將讀數(shù)之前，壓頭的移動方向應(yīng)與試驗(yàn)時的移動方向一致，多功能硬度測試儀使用方法。 5.2.3 應(yīng)采用下述兩種方法之一測量試驗(yàn)力： ——使用滿足GB/T 13634要求的1級或優(yōu)于1級的標(biāo)準(zhǔn)測力儀； ——用校準(zhǔn)過質(zhì)量的砝碼或具有相同準(zhǔn)確度的其他方法施加一個準(zhǔn)確到±0.2%的力，使該力與被測試驗(yàn)力相平衡。 5，多功能硬度測試儀使用方法.2.4 力的每一次測量的相對誤差（見公式A，多功能硬度測試儀使用方法.2）均應(yīng)在GB/T 231.1規(guī)定的試驗(yàn)力標(biāo)稱值的±1.0%以內(nèi)。硬度計(jì)分為臺式硬度計(jì)、便攜式硬度計(jì)兩種。多功能硬度測試儀使用方法</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="多功能硬度測試儀使用方法,硬度測試儀" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776484013672/8680701.jpg"></div><p style="text-indent:25px">5. 試驗(yàn)原理及試驗(yàn)裝置 5.1 維氏硬度和努氏硬度的試驗(yàn)原理—維氏壓痕硬度試驗(yàn)和努氏壓痕硬度試驗(yàn)的一般原理包括兩個步驟。 5.1.1 步驟1—在垂直于表面的方向使規(guī)定的合適壓頭壓到試樣上面并施加試驗(yàn)力F。將試驗(yàn)力保持一定時間后卸除。 5.1.2 步驟2—對于維氏硬度試驗(yàn)，測量兩條對角線的長度并計(jì)算平均對角線長度(其可被用于推導(dǎo)維氏硬度值)。對于努氏硬度試驗(yàn)，測量長對角線的長度(其可被用于推導(dǎo)努氏硬度值)。 5.1.3 當(dāng)在加載循環(huán)結(jié)束后移走壓頭時，大多數(shù)材料都將展現(xiàn)出一些彈性恢復(fù)。但如果要利用壓痕的對角線長度計(jì)算硬度值，則應(yīng)假設(shè)壓痕仍保持卸除試驗(yàn)力之后的壓頭形狀。在努氏試驗(yàn)中，則應(yīng)假設(shè)壓痕的長對角線與短對角線之比壓頭的相同。 5.2 試驗(yàn)機(jī)—試驗(yàn)機(jī)應(yīng)能支撐試樣并控制壓頭以預(yù)先設(shè)定的試驗(yàn)力壓入試樣，并且應(yīng)配備有一個光學(xué)顯微鏡，以選擇期望的試驗(yàn)位置并測量試驗(yàn)中所產(chǎn)生的壓痕尺寸。試樣表面的平面宜垂直于壓頭的軸線(即施加力的方向)。 5.2.1 試驗(yàn)機(jī)的特征、限制和各種操作程序的描述見設(shè)備制造商的使用手冊。多功能硬度測試儀使用方法布氏硬度計(jì)用于大型重型工件、粗糙工件的現(xiàn)場測試，對惡劣工況的適應(yīng)力強(qiáng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="多功能硬度測試儀使用方法,硬度測試儀" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776411054687/3897884.jpg"></div><p style="text-indent:25px"> HRM-45表面洛氏硬度計(jì)是一種普及型的表面洛氏硬度測試儀器。適用于材料的表面洛氏硬度試驗(yàn)，無需電源，其施加試驗(yàn)力的速度由液壓緩沖器來調(diào)節(jié)，試驗(yàn)力變換通過變荷手輪的旋轉(zhuǎn)獲得。本儀器操作簡便，性能穩(wěn)定，使用普遍。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-45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)力施加方法手動硬度讀取表面洛氏表盤讀取硬度值。</p><p style="text-indent:25px">5.5 試驗(yàn)循環(huán)的檢測 5.5.1 硬度計(jì)的試驗(yàn)循環(huán)宜由其制造者在生產(chǎn)時進(jìn)行檢測，或當(dāng)硬度計(jì)經(jīng)過修理后可能會影響到試驗(yàn)循環(huán)時進(jìn)行檢測。在其他時間對試驗(yàn)循環(huán)的檢測見表4的規(guī)定。 5.5.2 應(yīng)檢測試驗(yàn)循環(huán)以符合GB/T 231.1確定的試驗(yàn)循環(huán)時間，并要考慮與時間測量有關(guān)的測量不確定度。 6 間接檢驗(yàn) 6.1 宜在（23±5）℃溫度范圍內(nèi)，使用按GB/T 231.3標(biāo)定的標(biāo)準(zhǔn)硬度塊進(jìn)行間接檢驗(yàn)。如果在此溫度范圍以外進(jìn)行檢驗(yàn)，則應(yīng)在檢驗(yàn)報(bào)告中注明。標(biāo)準(zhǔn)塊的試驗(yàn)面和支承面與壓頭表面不應(yīng)有任何外來的或腐蝕性的污物。邵氏硬度測試:用硬度計(jì)插入被測材料,表盤上指針通過彈簧與刺針相連,用針刺入測物表面,顯示數(shù)值即硬度值。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="多功能硬度測試儀使用方法,硬度測試儀" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776440234375/5442824.jpg"></div><p style="text-indent:25px">A.2.2 壓痕直徑測量裝置的校準(zhǔn) 用標(biāo)準(zhǔn)線紋尺（參考標(biāo)準(zhǔn)）校準(zhǔn)壓痕直徑測量裝置的相對合成標(biāo)準(zhǔn)不確定度按公式（A.5）計(jì)算： …………………………………（A.5）式中： uL RS——標(biāo)準(zhǔn)線紋尺（參考標(biāo)準(zhǔn)）校準(zhǔn)證書給出的相對標(biāo)準(zhǔn)測量不確定度，k=1； ums——壓痕直徑測量裝置分辨力引入的相對標(biāo)準(zhǔn)測量不確定度； uL HTM——硬度計(jì)長度測量的相對標(biāo)準(zhǔn)不確定度。標(biāo)準(zhǔn)線紋尺（壓痕直徑測量裝置校準(zhǔn)用的參考標(biāo)準(zhǔn)）的測量不確定度在其相應(yīng)的校準(zhǔn)證書中給出。下列影響量不要對校準(zhǔn)用的標(biāo)準(zhǔn)線紋尺的測量不確定度產(chǎn)生實(shí)質(zhì)的影響。如： ——溫度相關(guān)性； ——長期穩(wěn)定度； ——內(nèi)插法誤差。標(biāo)準(zhǔn)線紋尺測量不確定度評定示例如下：標(biāo)準(zhǔn)線紋尺的擴(kuò)展測量不確定度： UL RS=0.000 5 mm（k=2）壓痕直徑測量裝置的分辨力： δms=1.0 硬度是表征著材料的彈性、塑性、形變、強(qiáng)化率、強(qiáng)度和韌性等一系列不同物理量組合的一種綜合性能指標(biāo)。多功能硬度測試儀使用方法</p><p style="text-indent:25px">硬度測試儀主要有布氏、洛氏和維氏硬度測試儀。多功能硬度測試儀使用方法</p><p style="text-indent:25px">硬度計(jì)檢驗(yàn)結(jié)果的測量不確定度 A.1 概述 GB/T231.1-2018的圖C.1示出了硬度標(biāo)尺的定義和量值傳遞所需的計(jì)量鏈。測量不確定度分析是一個有用的工具，有助于確定誤差源并了解測量值之間的差異。本附錄給出了不確定度評定指南，評定示例中推導(dǎo)出的值*供參考，但客戶特別指定的除外。本部分中對硬度計(jì)的性能規(guī)定的指標(biāo)，是經(jīng)過相當(dāng)長的一段時間才研發(fā)完善起來的。當(dāng)在確定硬度計(jì)需要滿足的一個具體的允差時,與所使用的計(jì)量器具和/或參考標(biāo)準(zhǔn)相關(guān)的不確定度就已經(jīng)包含在該允差之內(nèi)了，因此對該不確定度的限值欲做進(jìn)一步的任何修正（例如，減小測量不確定度的允差）都是不適當(dāng)?shù)?。這適用于在對硬度計(jì)進(jìn)行直接或間接檢驗(yàn)過程中做的所有測量。在不同情況下，使用規(guī)定的計(jì)量器具和/或參考標(biāo)準(zhǔn)測得的簡化測量值可用于評估硬度計(jì)是否符合本部分。然而，也可能有適合減小測量不確定度允差的特殊情況，但這只能在所有相關(guān)方共同協(xié)商一致后方可進(jìn)行操作。多功能硬度測試儀使用方法</p><p> 上海尚材試驗(yàn)機(jī)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(jì)的公司，是ISO9001-2015國際質(zhì)量體系認(rèn)證企業(yè)，是上海市****，是全國鋼標(biāo)準(zhǔn)化技術(shù)委員會力學(xué)分會委員單位之一，并參與了洛氏、布氏和維氏硬度試驗(yàn)國家標(biāo)準(zhǔn)的修編。公司主要開發(fā)布氏、洛氏、顯微、維氏硬度計(jì)，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?dāng)?shù)年穩(wěn)定研發(fā)團(tuán)隊(duì)，業(yè)內(nèi)專業(yè)顧問團(tuán)隊(duì)。20畝生產(chǎn)基地，5棟標(biāo)準(zhǔn)工業(yè)廠房，坐擁長三角地理優(yōu)勢，堅(jiān)持5S管理多年。擁有完備的機(jī)加工車間，CNC、數(shù)控機(jī)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(biāo)準(zhǔn)化、科學(xué)化、精細(xì)化”的現(xiàn)代管理方式，目標(biāo)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(jìn)制造企業(yè)。 </p> <p> 在“中國制造2025”強(qiáng)國戰(zhàn)略**下，我們立志為自己在世界硬度計(jì)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://m.cdcfah.com/cp/2814548.html</p></div></div></div></div></div><div id="gkcebn2" class="page-right twoColRt"><div id="v8khz2v" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8hoqikm" class="recomPic likePro"><a href="http://m.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(qiáng) 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