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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>重慶智能硬度機價格,硬度機</p><p><span>***更新：</span>2020-11-09 13:11:52</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="ddrl2tt" 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="ja1wpyb" class="page-proshow02"><p class="title">詳細說明</p><div id="cuish8i" class="box"><p><p> 鋼材的硬度:金屬硬度(Hardness)的代號為H。按硬度試驗方法的不同，●常規(guī)表示有布氏(HB)、洛氏(HRC)、維氏(HV)、里氏(HL)硬度等，其中以HB及HRC較為常用?！馠B應(yīng)用范圍較廣，HRC適用于表面高硬度材料，如熱處理硬度等。兩者區(qū)別在于硬度計之測頭不同，布氏硬度計之測頭為鋼球，而洛氏硬度計之測頭為金剛石?！馠V-適用于顯微鏡分析。維氏硬度(HV)以120kg以內(nèi)的載荷和頂角為136°的金剛石方形錐壓入器壓入材料表面，用材料壓痕凹坑的表面積除以載荷值，即為維氏硬度值(HV)?！馠L手提式硬度計，測量方便，利用沖擊球頭沖擊硬度表面后，產(chǎn)生彈跳;利用沖頭在距試樣表面1mm處的回彈速度與沖擊速度的比值計算硬度，公式:里氏硬度HL=1000×VB(回彈速度)/VA(沖擊速度)。●目前**常用的便攜式里氏硬度計用里氏(HL)測量后可以轉(zhuǎn)化為:布氏(HB)、洛氏(HRC)、維氏(HV)、肖氏(HS)硬度。或用里氏原理直接用布氏(HB)、洛氏(HRC)、維氏(HV)，重慶智能硬度機價格、里氏(HL)、肖氏(HS)測量硬度值。時代公司生產(chǎn)的TH系列里氏硬度計就有此功能，是傳統(tǒng)臺式硬度機的有益補充，重慶智能硬度機價格，重慶智能硬度機價格!"1、HB-布氏硬度:布氏硬度(HB)一般用于材料較軟的時候，如有色金屬、熱處理之前或退火后的鋼鐵。洛氏硬度(HRC)一般用于硬度較高的材料。對第二種誤差，在測量前需用標準塊對硬度計進行校準。重慶智能硬度機價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶智能硬度機價格,硬度機" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776448945312/1604205.jpg"></div><p> (1)轉(zhuǎn)動試驗力變換手輪，使試驗力符合選擇要求。旋轉(zhuǎn)試驗力變換手輪時，應(yīng)小心緩慢地進行，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屏上顯示此時試驗力變換手輪所指示的試驗力，并顯示94年8月8日初始化日期。(3)這時光標在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個數(shù)字。年份選擇后，按下[SPECI]鍵選擇月份，這時光標在8月下顯示，數(shù)次按下[TIME]或[TIME-]鍵選擇月份.再按下[SPECI]，這時光標在8日下顯示，如上所述選擇日期。當測試結(jié)果輸出打印時，相應(yīng)打出所鍵入的年月日期。如不需打印日期時，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，即表示儀器己進入工作狀態(tài)。(5)轉(zhuǎn)動物鏡、壓頭轉(zhuǎn)換手柄(16)，使40X物鏡(18)處于主體前方位置。(光學系統(tǒng)總放大倍率為400×，處于測量狀態(tài)。)(6)將標準試塊或試樣安放在試臺上，轉(zhuǎn)動旋輪(20)使試臺上升。眼睛接近測微目鏡觀察。當試樣離物鏡下端2～3mm時，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，這時聚焦過程完成。。重慶智能硬度機價格硬度試驗是機械性能試驗中**簡單易行的一種試驗方法。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶智能硬度機價格,硬度機" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776468222656/2992200.jpg"></div><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，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、測定的硬度值與標準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，應(yīng)調(diào)整壓痕測量裝置的允許誤差，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。</p><p> 4按實驗原理分類可分為布氏、洛氏、肖氏、維氏、里氏、努普、巴氏和劃痕、銼刀以及其他物理檢測方法，如超聲波、磁矯頑力等等。11種常見硬度試驗方法1洛氏硬度（HR）用一個金剛石圓錐（HRC）或經(jīng)硬化的（鎢）鋼球壓頭（HRB等），以10kgf的預(yù)載荷和60,100,或150kgf的主試驗力壓入被測材料表面。2表面洛氏硬度（HR）依據(jù)設(shè)定的標尺，用一個金剛石圓錐或經(jīng)硬化的（鎢）鋼球壓頭壓入被測材料表面。表面洛氏測量應(yīng)用的力值較小，產(chǎn)生的壓痕較淺，多用于相對易碎和很薄的材料中。預(yù)載荷為3kgf，主試驗力為15,30,或45kgf。3維氏硬度（HV）以1-120kgf的試驗力，將相對面夾角為136°的方錐形金剛石壓頭壓入被測材料表面。壓痕則應(yīng)用顯微鏡或USB攝像頭來進行視頻觀測及測量。4顯微維氏硬度（HV）通常以不超過1kgf的試驗力，將相對面夾角為136°的方錐形金剛石壓頭壓入被測材料表面。壓痕則應(yīng)用精密顯微鏡或**辨率的USB攝像頭來進行視頻觀測及測量。600x的放大倍數(shù)是**常見的，1000x的放大倍數(shù)正愈加被***的應(yīng)用。5努氏硬度（HK）通常以不超過1kgf的試驗力，將細長的金剛石椎體壓入被測材料表面。壓痕則應(yīng)用精密顯微鏡或**辨率的USB攝像頭來進行視頻觀測及測量。使壓頭或砧座與試驗機接觸部分壓緊，接觸良好，以免影響試驗結(jié)果的準確性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="重慶智能硬度機價格,硬度機" src="http://tyunfile.71360.com/UploadFile/shangcai/637127776484013672/8680701.jpg"></div><p> 硬度是一個專業(yè)的物理術(shù)語，材料局部抵抗硬物壓入其表面的能力稱為硬度。由于規(guī)定了不同的測試方法，所以有不同的硬度標準。各種硬度標準的力學含義不同，相互不能直接換算，但可通過試驗加以對比。彈簧鋼砍粗鐵小意思硬度一般分為三種：①劃痕硬度。主要用于比較不同礦物的軟硬程度，方法是選一根一端硬一端軟的棒，將被測材料沿棒劃過，根據(jù)出現(xiàn)劃痕的位置確定被測材料的軟硬。定性地說，硬物體劃出的劃痕長，軟物體劃出的劃痕短。②壓入硬度。主要用于金屬材料，方法是用一定的載荷將規(guī)定的壓頭壓入被測材料，以材料表面局部塑性變形的大小比較被測材料的軟硬。由于壓頭、載荷以及載荷持續(xù)時間的不同，壓入硬度有多種，主要是布氏硬度、洛氏硬度、維氏硬度和顯微硬度等幾種。③回跳硬度。主要用于金屬材料，方法是使一特制的小錘從一定高度自由下落沖擊被測材料的試樣，并以試樣在沖擊過程中儲存（繼而釋放）應(yīng)變能的多少（通過小錘的回跳高度測定）確定材料的硬度。凌空削發(fā)不是神話在刀劍硬度的測試上，我們通常采用的是洛氏硬度測試中的HRC標尺，通常用于測試淬火鋼、回火鋼、調(diào)質(zhì)鋼和部分不銹鋼。這是金屬加工行業(yè)應(yīng)用**多的硬度試驗方法。HRC適用范圍HRC20－67。對形狀復(fù)雜的試件要采用相應(yīng)形狀的墊塊，固定后方可測試。專業(yè)硬度機維修</p><p style="text-indent:25px">校準硬度計用的標準塊不能兩面使用，因標準面與背面硬度不一定一致。重慶智能硬度機價格</p><p> 將其壓入材料表面，通過觀察其表面凹坑的大小，來得到其主要參數(shù)(kgf/mm2)。雖然表達材料硬度的種類有多種，而且每種材料的檢測方式不同，但是其實各種硬度之間是可以進行相互換算的，具體如下：洛氏硬度與維氏硬度的換算(1)洛氏硬度與維氏硬度的換算公式是通過對Hans·Qvarnstorm提出的TheQvarnstorm總結(jié)得到的：而且，此公式用我國公布的黑色金屬硬度標準數(shù)據(jù)進行換算，其HRC誤差大約保持在±HRC范圍內(nèi)，而且就算差別很大也就士。(2)通過使用大小不一的力擠壓被測材料，然后通過對洛氏硬度與維氏硬度壓痕深度關(guān)系曲線的分析得出換算公式。本公式與國家標準實驗換算值對照,通過這種方式得到的換算值之誤差竟只有±。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)系進行分析，通過壓頭的應(yīng)力得出換算公式計算結(jié)果與國家標準實驗值對照，且換算誤差為±。(2)根據(jù)實際實驗數(shù)據(jù)用線性回歸法得到公式，且其公式誤差偏大，正常情況下，可以通過范圍偏小，不過，這種方法一般使用在精度要求不高的情況下可以使用。重慶智能硬度機價格</p><p style="text-indent:25px">上海尚材試驗機有限公司位于奉城鎮(zhèn)奉旺路373號。公司業(yè)務(wù)分為硬度計，布氏硬度計，洛氏硬度計，維氏硬度計等，目前不斷進行創(chuàng)新和服務(wù)改進，為客戶提供良好的產(chǎn)品和服務(wù)。公司秉持誠信為本的經(jīng)營理念，在機械及行業(yè)設(shè)備深耕多年，以技術(shù)為先導，以自主產(chǎn)品為重點，發(fā)揮人才優(yōu)勢，打造機械及行業(yè)設(shè)備良好品牌。上海尚材秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實”的經(jīng)營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1917883.html</p></div></div></div></div></div><div id="fx6dbgg" class="page-right twoColRt"><div 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