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href="http://www.cdcfah.com/cp/second-yiqiyibiao_shiyanji/">試驗(yàn)機(jī)</a>?<a href="http://www.cdcfah.com/cp/third-shiyanji_yingduji/">硬度計(jì)</a>?全自動(dòng)洛氏硬度機(jī)對照表上海尚材試驗(yàn)機(jī)供應(yīng)</p><div id="5h7rnzj" class="leftbox clearfix"><h1>全自動(dòng)洛氏硬度機(jī)對照表上海尚材試驗(yàn)機(jī)供應(yīng)</h1><div id="hj5jd9b" class="proBig"><div id="th3pz7t" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776515947265/7528397.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fbnlb9h" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776515947265/7528397.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7t153tv" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>全自動(dòng)洛氏硬度機(jī)對照表,硬度機(jī)</p><p><span>***更新：</span>2021-02-03 18:07:57</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="bblhhh1" 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="xrnhrpd" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xndf77l" class="box"><p><p> 但硬度和拉伸試驗(yàn)不應(yīng)同時(shí)進(jìn)行。2）對于SP（平整冷軋）狀態(tài)，與鍍層精整（PL）或鏡面光潔度（MF），或以“無拉伸痕”交貨的鋼材組合，***硬度可以提高5個(gè)HV或抗拉強(qiáng)度可以提高20MPa。3）牌號CS2、CS3和CS4的硬度值*適用于沸騰鋼，全自動(dòng)洛氏硬度機(jī)對照表。如上所述，冷軋板的力學(xué)性能可以通過拉伸試驗(yàn)來檢測，也可以通過硬度試驗(yàn)來檢測。由于硬度試驗(yàn)設(shè)備簡單、易于掌握，試驗(yàn)效率高，全自動(dòng)洛氏硬度機(jī)對照表，并且金屬硬度與強(qiáng)度之間有一定的對應(yīng)關(guān)系，所以硬度檢測是確定材料力學(xué)性能更方便的方法。冷軋板的硬度檢測可以用于冷軋薄板生產(chǎn)過程的質(zhì)量控制，更適于生產(chǎn)沖壓產(chǎn)品的廠家對冷軋板原材料進(jìn)行力學(xué)性能的復(fù)檢。日本工業(yè)標(biāo)準(zhǔn)JISG3141-1996規(guī)定的硬度試驗(yàn)是洛氏硬度HRB和維氏硬度HV，全自動(dòng)洛氏硬度機(jī)對照表。維氏硬度試驗(yàn)用于冷軋薄板毫無問題。洛氏硬度HRB卻不適用于測試?yán)滠埍“宀牧稀Ｒ驗(yàn)楫?dāng)板材厚度小于2mm時(shí)，測試HRB硬度可能會(huì)因?yàn)榘l(fā)生“測砧效應(yīng)”而使測試的硬度值失準(zhǔn)。對于薄的冷軋板材料，可以測試表面洛氏硬度HRT，然后換算成HRB或HV硬度。對洛氏硬度計(jì)校正結(jié)果，差值在±1之內(nèi)合格。全自動(dòng)洛氏硬度機(jī)對照表</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動(dòng)洛氏硬度機(jī)對照表,硬度機(jī)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776515947265/7528397.jpg"></div><p> (1)轉(zhuǎn)動(dòng)試驗(yàn)力變換手輪，使試驗(yàn)力符合選擇要求。旋轉(zhuǎn)試驗(yàn)力變換手輪時(shí)，應(yīng)小心緩慢地進(jìn)行，防止過快產(chǎn)生沖擊。(2)打開電源開關(guān)(22),指示燈(21)及光源燈(10)亮。LCD屏上顯示此時(shí)試驗(yàn)力變換手輪所指示的試驗(yàn)力，并顯示94年8月8日初始化日期。(3)這時(shí)光標(biāo)在94年下顯示，按下[TIME]或[TIME-]鍵,可遞增或遞減，每按一次遞增或遞減5個(gè)數(shù)字。年份選擇后，按下[SPECI]鍵選擇月份，這時(shí)光標(biāo)在8月下顯示，數(shù)次按下[TIME]或[TIME-]鍵選擇月份.再按下[SPECI]，這時(shí)光標(biāo)在8日下顯示，如上所述選擇日期。當(dāng)測試結(jié)果輸出打印時(shí)，相應(yīng)打出所鍵入的年月日期。如不需打印日期時(shí)，可連按三次[SPECI]鍵。(4)日期鍵入后，LCD屏上顯示D1、D2、HV、N等字母，即表示儀器己進(jìn)入工作狀態(tài)。(5)轉(zhuǎn)動(dòng)物鏡、壓頭轉(zhuǎn)換手柄(16)，使40X物鏡(18)處于主體前方位置。(光學(xué)系統(tǒng)總放大倍率為400×，處于測量狀態(tài)。)(6)將標(biāo)準(zhǔn)試塊或試樣安放在試臺上，轉(zhuǎn)動(dòng)旋輪(20)使試臺上升。眼睛接近測微目鏡觀察。當(dāng)試樣離物鏡下端2～3mm時(shí)，在目鏡的視場中心出現(xiàn)明亮光斑，說明聚焦面即將來到，此時(shí)應(yīng)緩慢微量上升，直至在目鏡中觀察到試塊或試樣表面的清晰成像，這時(shí)聚焦過程完成。。硬度機(jī)多少錢硬度計(jì)是一種硬度測試儀器。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動(dòng)洛氏硬度機(jī)對照表,硬度機(jī)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776404941406/5970398.jpg"></div><p> 表3-1維氏硬度試驗(yàn)的三種方法維氏硬度試驗(yàn)可選用的試驗(yàn)力值很多，見表3-2。表3-2推薦的維氏硬度試驗(yàn)力試驗(yàn)力的選擇要根據(jù)試樣種類、試樣厚度和預(yù)期的硬度范圍而定。標(biāo)準(zhǔn)規(guī)定，試樣或試驗(yàn)層的厚度至少為壓痕對角線長度的。試驗(yàn)后試樣背面不應(yīng)出現(xiàn)可見的變形痕跡。維氏硬度試驗(yàn)的優(yōu)點(diǎn)維氏硬度試驗(yàn)的壓痕是正方形，輕廓清晰，對角線測量準(zhǔn)確，因此，維氏硬度試驗(yàn)是常用硬度試驗(yàn)方法中精度高的，同時(shí)它的重復(fù)性也很好，這一點(diǎn)比布氏硬度計(jì)優(yōu)越。維氏硬度試驗(yàn)測量范圍寬廣，可以測量目前工業(yè)上所用到的幾乎全部金屬材料，從很軟的材料（幾個(gè)維氏硬度單位）到很硬的材料（3000個(gè)維氏硬度單位）都可測量。維氏硬度試驗(yàn)大的優(yōu)點(diǎn)在于其硬度值與試驗(yàn)力的大小無關(guān)，只要是硬度均勻的材料，可以任意選擇試驗(yàn)力，其硬度值不變。這就相當(dāng)于在一個(gè)很寬廣的硬度范圍內(nèi)具有一個(gè)統(tǒng)一的標(biāo)尺。這一點(diǎn)又比洛氏硬度試驗(yàn)來得優(yōu)越。在中、低硬度值范圍內(nèi)，在同一均勻材料上，維氏硬度試驗(yàn)和布氏硬度試驗(yàn)結(jié)果會(huì)得到近似的硬度值。例如，當(dāng)硬度值為400以下時(shí)，HV≈HB，如圖3-2所示。維氏硬度試驗(yàn)的試驗(yàn)力可以小到10gF，壓痕非常小，特別適合測試薄小材料。維氏硬度試驗(yàn)的缺點(diǎn)維氏硬度試驗(yàn)效率低。</p><p> 否則應(yīng)將吊環(huán)掛于重點(diǎn)刀刃上，校直吊架吊桿；（5）主軸與試臺平臺垂直度，主軸軸線與升降絲桿軸線同軸度超差，應(yīng)分析視其情況進(jìn)行主軸與試臺平臺垂直度、主軸軸線與升降絲桿軸線同軸度的調(diào)整。4、硬度計(jì)反復(fù)加卸載荷造成這種故障的原因及排除方法：（1）按鍵開關(guān)頂桿過長，轉(zhuǎn)向開關(guān)A、B觸點(diǎn)與A1、B1觸點(diǎn)不能脫開，應(yīng)調(diào)節(jié)頂桿長度并固定之；（2）換向開關(guān)安裝位置不當(dāng)，活動(dòng)擋板不能觸動(dòng)換向開關(guān)上的銷子，造成換向開關(guān)不換向，應(yīng)調(diào)整換向開關(guān)的安裝位置。5、硬度計(jì)載荷全部加上時(shí)停機(jī)此種故障原因?yàn)閾Q向開關(guān)接觸點(diǎn)有燒傷、燒蝕現(xiàn)象，造成接觸點(diǎn)接觸不良，應(yīng)對接觸點(diǎn)加以清理打磨或更換新的換向開關(guān)。6、按鍵開關(guān)按下，硬度計(jì)不動(dòng)作，但有嗡嗡的電流聲此種故障原因?yàn)殡姍C(jī)缺相，應(yīng)檢查電源是否正常，電源插頭是否插好，電纜線是否有斷路，電源開關(guān)是否完好，電機(jī)接線是否接牢，電機(jī)線圈是否燒壞一組以及換向開關(guān)觸點(diǎn)接觸是否良好等，應(yīng)視其情況分別予以排除。差值在±2范圍之外時(shí)則必需對硬度計(jì)進(jìn)行校正維修或換其他硬度測試法測定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動(dòng)洛氏硬度機(jī)對照表,硬度機(jī)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776406357422/7324439.jpg"></div><p> 通過對洛氏硬度與維氏硬度壓痕深度關(guān)系曲線的分析得出公式本公式與國家標(biāo)準(zhǔn)實(shí)驗(yàn)換算值對照,換算式計(jì)算結(jié)果與標(biāo)準(zhǔn)實(shí)驗(yàn)值之誤差為±。(3)根據(jù)實(shí)際的實(shí)驗(yàn)數(shù)據(jù)利用線性回歸的方法對洛氏硬度與維氏硬度的換算進(jìn)行探討，得出公式：本公式使用范圍小，誤差較大，但計(jì)算簡便，在對精度要求不高時(shí)可以使用。3.洛氏硬度與布氏硬度的換算(1)對布氏壓痕和洛氏壓痕深度關(guān)系進(jìn)行分析，根據(jù)壓頭的應(yīng)力σHRC=σHB得出換算公式計(jì)算結(jié)果與國家標(biāo)準(zhǔn)實(shí)驗(yàn)值對照，換算式計(jì)算結(jié)果與標(biāo)準(zhǔn)實(shí)驗(yàn)值之誤差為±。(2)根據(jù)實(shí)際實(shí)驗(yàn)數(shù)據(jù)用線性回歸法得到公式公式誤差偏大，使用范圍偏小，但計(jì)算簡便，在對精度要求不高的情況下可以使用。4.布氏硬度與維氏硬度的換算布氏硬度與維氏硬度的關(guān)系，同樣根據(jù)σHB=σHV得出公式此公式換算結(jié)果與國家標(biāo)準(zhǔn)換算值對照，換算誤差為±2HV。5.努氏硬度與洛氏硬度的換算因?yàn)榕嫌捕扰c洛氏硬度的對應(yīng)曲線類似于拋物線，故由曲線得出近似的換算公式為此公式比較精確，可以作為使用參考。水果硬度計(jì)通過測量水果的硬度來判斷水果的成熟度。硬度機(jī)多少錢</p><p style="text-indent:25px">韋氏硬度計(jì)（HW）適用于鋁合金類產(chǎn)品的韋氏硬度值測量。全自動(dòng)洛氏硬度機(jī)對照表</p><p> 什么是洛氏硬度（HRCHRBHRA）洛氏硬度計(jì)洛氏硬度計(jì)（臺式硬度計(jì)）為在規(guī)定條件下，將壓頭（金剛石圓錐、鋼球或硬質(zhì)合金球）分2個(gè)步驟壓入試樣表面。卸除主試驗(yàn)力后，在初試驗(yàn)力下測量壓痕殘余深度h。以壓痕殘余深度ｈ**硬度的高低。洛氏硬度試驗(yàn)機(jī)采用洛氏(ROCKWELL)測量原理，用于碳鋼、合金鋼、鑄鐵、有色金屬及工程塑料等材料的硬度檢測，具有測試精度高，測量范圍寬，主試驗(yàn)力自動(dòng)加卸載，測量結(jié)果數(shù)字顯示并自動(dòng)打印或與外部計(jì)算機(jī)通訊等特點(diǎn)。可廣泛應(yīng)用于計(jì)量、機(jī)械制造、冶金、化工、建材等行業(yè)的檢測、科研與生產(chǎn)。洛氏硬度計(jì)原理在規(guī)定條件下，將壓頭（金剛石圓錐、鋼球或硬質(zhì)合金球）分2個(gè)步驟壓入試樣表面。卸除主試驗(yàn)力后，在初試驗(yàn)力下測量壓痕殘余深度h。以壓痕殘余深度ｈ**硬度的高低。洛氏硬度試驗(yàn)原理如圖２－１所示。1—在初始試驗(yàn)力F0下的壓入深度；2—在總試驗(yàn)力F0+F1下的壓入深度；3—去除主試驗(yàn)力F1后的彈性回復(fù)深度；4—?dú)堄鄩喝肷疃萮；5—試樣表面；6—測量基準(zhǔn)面；7—壓頭位置圖２－１洛氏硬度試驗(yàn)原理圖洛氏硬度值按下式計(jì)算：N－常數(shù)，對于A、C、D、N、T標(biāo)尺，N=100；其他標(biāo)尺，N=130；h－殘余壓痕深度，mm；S－常數(shù)，對于洛氏硬度，S=。全自動(dòng)洛氏硬度機(jī)對照表</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(huì)力學(xué)分會(huì)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(gè)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(shí)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://www.cdcfah.com/cp/3145238.html</p></div></div></div></div></div><div id="d7vjnbb" 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