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href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_shiyanji/">試驗機(jī)</a>?<a href="http://www.cdcfah.com/cp/third-shiyanji_yingduji/">硬度計</a>?四川布氏硬度機(jī) 上海尚材試驗機(jī)供應(yīng)</p><div id="8fs3vk2" class="leftbox clearfix"><h1>四川布氏硬度機(jī) 上海尚材試驗機(jī)供應(yīng)</h1><div id="emm3pj9" class="proBig"><div id="uhxcsig" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776441435547/8903464.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gtka7jh" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/shangcai/637127776441435547/8903464.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yv3ntu4" 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>四川布氏硬度機(jī),硬度機(jī)</p><p><span>***更新：</span>2020-11-10 02:07:18</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="lny3ghe" 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(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="zrb333w" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="2h8jzvx" class="box"><p><p> 布氏硬度計因能測出試樣較大范圍的硬度值，因而廣泛應(yīng)用于生產(chǎn)中對未經(jīng)淬火鋼、鑄鐵、有色金屬及質(zhì)地較軟的軸承合金等的布氏硬度值測定。本文以DHB-3000布氏硬度計為例，談?wù)勔恍┏Ｒ姽收霞芭懦椒ā?、載荷誤差超過±：（1）力點刀刃松動，應(yīng)調(diào)整力點刀刃并擰緊；（2）力點刀刃和支點的磨損會不同程度地增加載荷誤差，應(yīng)研修刀刃；（3）載荷杠桿上的調(diào)整塊位置不適當(dāng)，可根據(jù)情況向前或向后移動，調(diào)整合適后固定緊；（4）壓縮彈簧銹蝕，增大了與壓軸、主軸襯套的磨擦，應(yīng)清洗生銹部位并上防護(hù)油或更換之。（5）加荷不平穩(wěn)，有沖擊振動現(xiàn)象，應(yīng)排除引起不平穩(wěn)的因素。2、加荷速度不能控制在規(guī)定的時間內(nèi)加荷速度過快或過慢，主要是減速器用油粘度過小或過大，應(yīng)清洗減速器，并更換減速器用油。3、測定的硬度值與標(biāo)準(zhǔn)硬度塊示值不一致造成這種故障的原因及排除方法：（1）硬度計安裝不水平，應(yīng)將硬度計調(diào)至水平；（2）鋼球表面不光潔或直徑超過允差，應(yīng)用千分尺挑選合格的鋼球換上；7（3）壓痕測量裝置誤差偏大，四川布氏硬度機(jī)，四川布氏硬度機(jī)，應(yīng)調(diào)整壓痕測量裝置的允許誤差，四川布氏硬度機(jī)，使其≤±；（4）砝碼不能垂直放置，砝碼與硬度計后蓋擦靠，應(yīng)檢查吊環(huán)是否掛在重點刀刃上，吊架吊桿是否平直。硬度低于HRC20時應(yīng)用HRB標(biāo)度進(jìn)行測試。四川布氏硬度機(jī)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川布氏硬度機(jī),硬度機(jī)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776441435547/8903464.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)實驗換算值對照,換算式計算結(jié)果與標(biāo)準(zhǔn)實驗值之誤差為±。(3)根據(jù)實際的實驗數(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，但計算簡便，在對精度要求不高時可以使用。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得出換算公式計算結(jié)果與國家標(biāo)準(zhǔn)實驗值對照，換算式計算結(jié)果與標(biāo)準(zhǔn)實驗值之誤差為±。(2)根據(jù)實際實驗數(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為努氏硬度與洛氏硬度的對應(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。安徽顯微硬度機(jī)供應(yīng)商維氏硬度（HV）以頂角為136°的金剛石方形錐壓入器壓入材料表面，用載荷值除以材料壓痕凹坑的表面積。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川布氏硬度機(jī),硬度機(jī)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776423798828/843294.jpg"></div><p> 7)如果在目鏡中觀察到的成像呈模糊狀或一半清晰一半模糊，則說明光源中心偏離系統(tǒng)光路中心，需調(diào)節(jié)燈泡的中心位置。如果視場太暗或太亮可通過操作面板(6)上的軟鍵調(diào)節(jié)光源強(qiáng)弱。(8)如果想觀察試塊或試樣上的較大視場范圍，可將物鏡壓頭轉(zhuǎn)換手柄逆時針轉(zhuǎn)至主體前方，此時，光學(xué)系統(tǒng)總放大倍率為100X，處于觀察狀態(tài)。當(dāng)轉(zhuǎn)換1OX和40X物鏡時聚焦面有微量變化，可微調(diào)升降絲桿進(jìn)行聚焦。(9)將轉(zhuǎn)換手柄逆時針轉(zhuǎn)動，使壓頭主軸處于主體前方，此時壓頭前列(1)與聚焦好的平面之間間隙約為～。當(dāng)測量不規(guī)則的試樣時要小心，防止壓頭碰及試樣，損壞壓頭。(10)根據(jù)試驗要求在操作面板上鍵入試驗力延時保荷時間，每鍵入一次變化為五秒，[十]為加，[－]為減。(11)按下操作面板(6)上的[START]鍵，此時加試驗力，[LOADING]LED指示燈亮。(12)試驗力保持階段時，延時[DWELL]LED亮，此時LCD屏上T按所選擇時間倒計數(shù)，延時時間到，試驗力卸除，卸試驗力(UNLOADING)LED亮。在LED未滅前，不要轉(zhuǎn)動壓頭測量轉(zhuǎn)換手柄，否則會影響壓痕測量精度，甚至損壞儀器。(13)將轉(zhuǎn)換手柄順時針轉(zhuǎn)動，使40X物鏡處于主體前方。這時就可在測微目鏡中測量對角線長度。(14)先將測微目鏡右邊的鼓輪順時針旋轉(zhuǎn)。</p><p> 使目鏡內(nèi)觀察到的兩刻線相近移動。當(dāng)兩刻線邊緣相近時，透光縫隙逐漸減少，當(dāng)兩刻線間處于無光隙的臨界狀態(tài)時，按下[CL]鍵清零。(15)轉(zhuǎn)動左側(cè)鼓輪使鼓輪左邊刻線對準(zhǔn)壓痕一角，再轉(zhuǎn)動右側(cè)鼓輪，兩刻線分離，使右側(cè)刻線對準(zhǔn)壓痕另一角。當(dāng)刻線對準(zhǔn)壓痕對角線無誤時，就按下測微目鏡下方的按鈕輸入，并在顯示屏的D1后顯示。(16)當(dāng)右側(cè)鼓輪轉(zhuǎn)動時，LCD屏上D1后的數(shù)字閃爍，表示結(jié)果還未輸入，當(dāng)結(jié)果輸入后就不再閃爍，光標(biāo)轉(zhuǎn)入D2。按上述要求，再次測定另一對角線長度。此時LCD屏HV硬度值就同時顯示。注:壓痕會由于樣品的表面粗糙不平或平整度差異或多或少地發(fā)生變形，所以測量對角線應(yīng)在兩個垂直方向上進(jìn)行，取其算術(shù)平均值。(當(dāng)進(jìn)行努氏硬度試驗時，只需測試長對角線長度，HK硬度值就立即顯示。)(17)本次測量完成后，才能進(jìn)行下一次試驗。如果本次測量結(jié)果不滿意，可重復(fù)進(jìn)行測量或按[SPECI]、[RESET]復(fù)位鍵重新進(jìn)行試驗。(此時測微目鏡刻線需重新對零)(18)當(dāng)LCD屏顯示測量次數(shù)N≥1時，可按[SPECI]、[PRI]打印鍵，測試結(jié)果從打印機(jī)(24)中打印輸出。***次試驗結(jié)果(N=O)不予打印。(19)當(dāng)在目鏡中觀察到壓痕太小或太大影響測量時，需重新選擇試驗力，轉(zhuǎn)動試驗力變換手輪。差值在±2范圍之外時則必需對硬度計進(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="四川布氏硬度機(jī),硬度機(jī)" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776472285156/7820234.jpg"></div><p> 金屬硬度材料分選儀，多能存儲20個不同的檢測參數(shù)。硬度檢測方法選用對于HBSlt;450的金屬材料，包括退火、正火、調(diào)質(zhì)鋼，金屬硬度材料分選儀價格，各種鑄鐵以及多種有色金屬及其合金（包括鋁、銅、鎂、鉛、鋅、錫等）用布氏硬度檢測方法比較合理。因為布氏法有多種檢測力和壓頭選擇，金屬硬度材料分選儀出售，壓痕直徑大，能測出較大范圍內(nèi)金屬各組成部分的綜合性能，而不易受個別相或局部組織的影響，數(shù)據(jù)較準(zhǔn)確穩(wěn)定，復(fù)現(xiàn)性較好。用洛氏硬度檢測法測得的金屬材料硬度值與布氏和維氏法的結(jié)果比較，精度較低，這是因為洛氏檢測法是以測量壓痕深度間接反映硬度值的高低，檢測點很小，金屬硬度材料分選儀報價，且每一洛氏單位*為，易于出現(xiàn)誤差。但洛氏檢測法方便、迅速，特別適用于鋼鐵材料的熱處理工藝過程和終產(chǎn)品檢測。在試件允許的情況下，一般選不同部位至少測試三個硬度值，取平均值，取平均值作為試件的硬度值。江西洛氏硬度機(jī)價格</p><p style="text-indent:25px">水果硬度計通過測量水果的硬度來判斷水果的成熟度。四川布氏硬度機(jī)</p><p> 表面熱處理分為兩大類，一類是表面淬火回火熱處理，另一類是化學(xué)熱處理，其硬度檢驗方法如下：1、表面淬火回火熱處理表面淬火，回火熱處理通常用感應(yīng)加熱或火焰加熱的方式進(jìn)行。主要技術(shù)參數(shù)是表面硬度、局部硬度和有效硬化層深度。硬度檢測可采用維氏硬度計，也可采用洛氏或表面洛氏硬度計。試驗力（標(biāo)尺）的選擇與有效硬化層深度和工件表面硬度有關(guān)。這里涉及到三種硬度計。維氏硬度計是測試熱處理工件表面硬度的重要手段，它可選用～100KG的試驗力，測試薄至，它的精度是高的，可分辨出熱處理工件表面硬度的微小差別。另外，有效硬化層深度也要由維氏硬度計來檢測，所以，對于進(jìn)行表面熱處理加工或大量使用表面熱處理工件的單位，配備一臺維氏硬度計是有必要的。表面洛氏硬度計也是十分適于測試表面淬火工件硬度的，表面洛氏硬度計有三種標(biāo)尺可以選擇?？梢詼y試有效硬化深度超過。盡管表面洛氏硬度計的精度沒有維氏硬度計高，但是作為熱處理工廠質(zhì)量管理和合格檢查的檢測手段，已經(jīng)能夠滿足要求。況且它還具有操作簡單、使用方便、價格較低，測量迅速、可直接讀取硬度值等特點，利用表面洛氏硬度計可對成批的表面熱處理工件進(jìn)行快速無損的逐件檢測。四川布氏硬度機(jī)</p><p style="text-indent:25px">上海尚材試驗機(jī)有限公司總部位于奉城鎮(zhèn)奉旺路373號，是一家公司主要開發(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。經(jīng)營范圍：試驗分析儀器、拋光機(jī)、切割機(jī)、鑲嵌機(jī)、磨拋機(jī)制造、加工、批發(fā)、零售、修理，機(jī)械設(shè)備制造、加工，從事貨物進(jìn)出口及技術(shù)進(jìn)出口業(yè)務(wù)。的公司。上海尚材作為公司主要開發(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。經(jīng)營范圍：試驗分析儀器、拋光機(jī)、切割機(jī)、鑲嵌機(jī)、磨拋機(jī)制造、加工、批發(fā)、零售、修理，機(jī)械設(shè)備制造、加工，從事貨物進(jìn)出口及技術(shù)進(jìn)出口業(yè)務(wù)。的企業(yè)之一，為客戶提供良好的硬度計，布氏硬度計，洛氏硬度計，維氏硬度計。上海尚材不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。上海尚材始終關(guān)注機(jī)械及行業(yè)設(shè)備行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1921632.html</p></div></div></div></div></div><div id="zhd7idz" class="page-right twoColRt"><div id="aizuv7d" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8hava8m" 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