洛(luo)氏(shi)硬度(du)計(ji)(ji)的(de)(de)(de)穩(wen)定(ding)性(xing)檢(jian)測：由(you)于硬度(du)計(ji)(ji)法(fa)定(ding)計(ji)(ji)量(liang)(liang)的(de)(de)(de)周期一(yi)般(ban)是一(yi)年，未發生(sheng)重(zhong)(zhong)大異常(chang)時(shi)(shi)，實(shi)驗(yan)室一(yi)般(ban)不會重(zhong)(zhong)新計(ji)(ji)量(liang)(liang)，因此實(shi)驗(yan)室用硬度(du)計(ji)(ji)的(de)(de)(de)穩(wen)定(ding)性(xing)直接影響著日常(chang)檢(jian)測結果的(de)(de)(de)正確(que)性(xing)。洛(luo)氏(shi)硬度(du)計(ji)(ji)在實(shi)驗(yan)室內部開展(zhan)硬度(du)計(ji)(ji)在一(yi)定(ding)時(shi)(shi)間內的(de)(de)(de)穩(wen)定(ding)性(xing)研究具有重(zhong)(zhong)要的(de)(de)(de)意義，對(dui)于提高(gao)實(shi)驗(yan)室的(de)(de)(de)管理(li)水(shui)平和工作質量(liang)(liang)十(shi)分(fen)重(zhong)(zhong)要，尤其(qi)對(dui)于實(shi)驗(yan)室的(de)(de)(de)檢(jian)測人員養成良好的(de)(de)(de)質量(liang)(liang)觀念(nian)和質量(liang)(liang)意識、實(shi)驗(yan)室提高(gao)市場(chang)出名度(du)和開拓檢(jian)測市場(chang)十(shi)分(fen)重(zhong)(zhong)要。穩(wen)定(ding)性(xing)是指測量(liang)(liang)儀器保(bao)持其(qi)計(ji)(ji)量(liang)(liang)特(te)性(xing)隨時(shi)(shi)間恒定(ding)的(de)(de)(de)能(neng)力，洛(luo)氏(shi)硬度(du)計(ji)(ji)可(ke)以進(jin)行定(ding)量(liang)(liang)的(de)(de)(de)表征，主(zhu)要是確(que)定(ding)計(ji)(ji)量(liang)(liang)特(te)性(xing)隨時(shi)(shi)間變化的(de)(de)(de)關系。洛(luo)氏(shi)硬度(du)計(ji)(ji)應用與試(shi)(shi)(shi)樣硬度(du)值接近的(de)(de)(de)標(biao)準硬度(du)塊(kuai)校機，使(shi)得(de)試(shi)(shi)(shi)驗(yan)結果更(geng)為可(ke)靠。柳州高(gao)階洛(luo)氏(shi)硬度(du)計(ji)(ji)測試(shi)(shi)(shi)標(biao)準

洛(luo)氏(shi)硬(ying)度計的(de)(de)(de)維護：1.檢查工(gong)(gong)作臺(tai)正面和(he)側面及卡具(ju)，保證(zheng)沒(mei)有(you)損壞或外(wai)來物。電器裝(zhuang)置(zhi)應(ying)(ying)(ying)有(you)良好(hao)的(de)(de)(de)接地(di)線，以防漏電傷人。2.硬(ying)度計使用前(qian)，應(ying)(ying)(ying)按(an)試驗要求選擇相應(ying)(ying)(ying)的(de)(de)(de)壓(ya)頭，將壓(ya)頭用無酸汽油(you)清(qing)洗后，裝(zhuang)入(ru)主軸(zhou)襯套(tao)內固定。固定時(shi)應(ying)(ying)(ying)保持壓(ya)頭與主軸(zhou)同心。3.所有(you)工(gong)(gong)作平(ping)臺(tai)的(de)(de)(de)基面和(he)支撐(cheng)面應(ying)(ying)(ying)清(qing)潔光滑，且不(bu)(bu)應(ying)(ying)(ying)有(you)麻坑、洛(luo)氏(shi)硬(ying)度計大劃傷和(he)外(wai)來物，工(gong)(gong)作平(ping)臺(tai)應(ying)(ying)(ying)穩固地(di)安裝(zhuang)在(zai)絲杠上，不(bu)(bu)應(ying)(ying)(ying)有(you)晃動。支撐(cheng)面任何可(ke)(ke)觀察(cha)到的(de)(de)(de)壓(ya)坑都會給(gei)薄(bo)材(cai)試驗造成不(bu)(bu)準確的(de)(de)(de)結果(guo)。工(gong)(gong)作平(ping)臺(tai)應(ying)(ying)(ying)穩固地(di)安裝(zhuang)在(zai)絲杠上，不(bu)(bu)應(ying)(ying)(ying)有(you)晃動。支撐(cheng)面任何可(ke)(ke)觀察(cha)到的(de)(de)(de)壓(ya)坑都會給(gei)薄(bo)材(cai)試驗造成不(bu)(bu)準確的(de)(de)(de)結果(guo)。廣州(zhou)金(jin)屬淬(cui)透(tou)性末端淬(cui)火洛(luo)氏(shi)硬(ying)度計哪家(jia)好(hao)洛(luo)氏(shi)硬(ying)度計可(ke)(ke)到國(guo)家(jia)規定的(de)(de)(de)計量院做(zuo)第三(san)方檢測報告。

表(biao)(biao)面(mian)(mian)(mian)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)采(cai)用(yong)(yong)三種(zhong)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)力，常用(yong)(yong)兩種(zhong)壓頭(tou)，它們有(you)6種(zhong)組合，對(dui)應于(yu)表(biao)(biao)面(mian)(mian)(mian)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)6個標尺(chi)。表(biao)(biao)面(mian)(mian)(mian)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)是(shi)對(dui)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)的(de)(de)(de)(de)一種(zhong)補充(chong)，在(zai)采(cai)用(yong)(yong)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)時，當遇到(dao)材(cai)(cai)料較(jiao)(jiao)薄，試(shi)(shi)(shi)(shi)(shi)樣較(jiao)(jiao)小，表(biao)(biao)面(mian)(mian)(mian)硬(ying)(ying)(ying)化層(ceng)較(jiao)(jiao)淺或(huo)測(ce)試(shi)(shi)(shi)(shi)(shi)表(biao)(biao)面(mian)(mian)(mian)鍍覆層(ceng)時，就(jiu)應改用(yong)(yong)表(biao)(biao)面(mian)(mian)(mian)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)。這時采(cai)用(yong)(yong)與洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)相同的(de)(de)(de)(de)壓頭(tou)，采(cai)用(yong)(yong)只有(you)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)幾分之一大小的(de)(de)(de)(de)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)力，就(jiu)可以(yi)在(zai)上述試(shi)(shi)(shi)(shi)(shi)樣上得到(dao)有(you)效的(de)(de)(de)(de)硬(ying)(ying)(ying)度(du)(du)(du)試(shi)(shi)(shi)(shi)(shi)驗(yan)(yan)結果。表(biao)(biao)面(mian)(mian)(mian)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)N標尺(chi)適用(yong)(yong)于(yu)類似(si)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)HRC、HRA和HRD測(ce)試(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)材(cai)(cai)料；洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)計T標尺(chi)適用(yong)(yong)于(yu)類似(si)洛(luo)(luo)(luo)(luo)(luo)氏(shi)(shi)硬(ying)(ying)(ying)度(du)(du)(du)的(de)(de)(de)(de)HRB、HRF和HRG測(ce)試(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)材(cai)(cai)料。

洛(luo)氏(shi)(shi)硬(ying)(ying)度計(ji)(ji)(ji)的(de)使用(yong)(yong)方法相對簡單(dan)，首先(xian)需要選擇合適的(de)壓(ya)頭(tou)和(he)負(fu)荷大小，然后(hou)將壓(ya)頭(tou)放(fang)在(zai)材(cai)(cai)(cai)料(liao)(liao)表面上(shang)，通過(guo)旋(xuan)轉螺旋(xuan)裝置(zhi)施(shi)(shi)加一(yi)定的(de)負(fu)荷。負(fu)荷施(shi)(shi)加后(hou)，保持一(yi)定的(de)時間，然后(hou)卸載負(fu)荷，使用(yong)(yong)顯微鏡測量(liang)壓(ya)痕(hen)的(de)直徑。末端，根據公式計(ji)(ji)(ji)算出洛(luo)氏(shi)(shi)硬(ying)(ying)度值。洛(luo)氏(shi)(shi)硬(ying)(ying)度計(ji)(ji)(ji)具有測量(liang)簡便、結果準(zhun)確、重復性好等(deng)優點，因(yin)此被廣泛應用(yong)(yong)于各個(ge)行業。在(zai)金屬(shu)材(cai)(cai)(cai)料(liao)(liao)領域，洛(luo)氏(shi)(shi)硬(ying)(ying)度計(ji)(ji)(ji)可(ke)以(yi)用(yong)(yong)來評估(gu)材(cai)(cai)(cai)料(liao)(liao)的(de)硬(ying)(ying)度，從(cong)而判斷(duan)材(cai)(cai)(cai)料(liao)(liao)的(de)強度和(he)耐(nai)磨性。在(zai)塑(su)料(liao)(liao)和(he)橡膠領域，洛(luo)氏(shi)(shi)硬(ying)(ying)度計(ji)(ji)(ji)可(ke)以(yi)用(yong)(yong)來評估(gu)材(cai)(cai)(cai)料(liao)(liao)的(de)硬(ying)(ying)度和(he)彈性，從(cong)而判斷(duan)材(cai)(cai)(cai)料(liao)(liao)的(de)質(zhi)量(liang)和(he)可(ke)用(yong)(yong)性。洛(luo)氏(shi)(shi)硬(ying)(ying)度計(ji)(ji)(ji)具有硬(ying)(ying)度值轉換(huan)(huan)功能：可(ke)轉換(huan)(huan)為維氏(shi)(shi)、布氏(shi)(shi)、洛(luo)氏(shi)(shi)、表洛(luo)等(deng)。

布氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)試驗(yan)(yan)的(de)(de)(de)(de)特點是壓(ya)痕較大，成品檢驗(yan)(yan)有困難，試驗(yan)(yan)過程比洛(luo)(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)試驗(yan)(yan)復雜，測量(liang)操作(zuo)和(he)(he)壓(ya)痕測量(liang)都(dou)比較費時，并且由(you)于壓(ya)痕邊緣的(de)(de)(de)(de)凸起、凹陷(xian)或圓滑過渡都(dou)會使(shi)壓(ya)痕直徑的(de)(de)(de)(de)測量(liang)產生較大誤差，因此(ci)要(yao)求(qiu)操作(zuo)者具有熟練的(de)(de)(de)(de)試驗(yan)(yan)技術和(he)(he)豐富經驗(yan)(yan)，一般要(yao)求(qiu)由(you)專(zhuan)門的(de)(de)(de)(de)實驗(yan)(yan)員操作(zuo)。硬(ying)(ying)度(du)(du)(du)(du)表示(shi)材(cai)料(liao)抵(di)抗硬(ying)(ying)物體壓(ya)入其(qi)表面的(de)(de)(de)(de)能力(li)。它是金屬(shu)材(cai)料(liao)的(de)(de)(de)(de)重(zhong)要(yao)性(xing)能指(zhi)標之一。一般硬(ying)(ying)度(du)(du)(du)(du)越高，耐磨(mo)性(xing)越好。常用的(de)(de)(de)(de)硬(ying)(ying)度(du)(du)(du)(du)指(zhi)標有布氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)、洛(luo)(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)和(he)(he)維氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)。金屬(shu)材(cai)料(liao)的(de)(de)(de)(de)各(ge)種(zhong)硬(ying)(ying)度(du)(du)(du)(du)值之間(jian)(jian)，硬(ying)(ying)度(du)(du)(du)(du)值與強度(du)(du)(du)(du)值之間(jian)(jian)具有近(jin)似的(de)(de)(de)(de)相應(ying)關系。因為硬(ying)(ying)度(du)(du)(du)(du)值是由(you)起始(shi)塑(su)性(xing)變(bian)形(xing)(xing)抗力(li)和(he)(he)繼續塑(su)性(xing)變(bian)形(xing)(xing)抗力(li)決定的(de)(de)(de)(de)，材(cai)料(liao)的(de)(de)(de)(de)強度(du)(du)(du)(du)越高，塑(su)性(xing)變(bian)形(xing)(xing)抗力(li)越高，洛(luo)(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)計(ji)硬(ying)(ying)度(du)(du)(du)(du)值也就越高。但各(ge)種(zhong)材(cai)料(liao)的(de)(de)(de)(de)換算關系并不一致。洛(luo)(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)計(ji)工作(zuo)平(ping)臺應(ying)穩固地安裝在絲杠上，不應(ying)有晃動(dong)。鄭州洛(luo)(luo)氏(shi)(shi)硬(ying)(ying)度(du)(du)(du)(du)計(ji)哪家(jia)好

洛氏(shi)硬度計由于(yu)壓痕較大，一般不用于(yu)成品檢(jian)測。柳(liu)州高(gao)階洛氏(shi)硬度計測試標準(zhun)

全自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)數顯(xian)洛(luo)氏硬(ying)(ying)(ying)度(du)(du)計(ji)特點：自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)升(sheng)降(jiang)絲(si)杠、自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)選擇(ze)試(shi)(shi)(shi)(shi)驗(yan)力、自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)加載(zai)初試(shi)(shi)(shi)(shi)驗(yan)力、自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)加載(zai)主試(shi)(shi)(shi)(shi)驗(yan)力，自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)卸載(zai)、自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)顯(xian)示硬(ying)(ying)(ying)度(du)(du)值(zhi)，操(cao)作步驟：一(yi)鍵(jian)式操(cao)作：按啟動(dong)(dong)(dong)鍵(jian)，工(gong)作臺自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)上升(sheng)，樣品(pin)觸(chu)(chu)碰到壓頭后自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)加載(zai)，自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)卸載(zai)，自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)顯(xian)示硬(ying)(ying)(ying)度(du)(du)值(zhi)。（工(gong)作臺自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)升(sheng)降(jiang)（沒有(you)高度(du)(du)限制），無需人工(gong)轉(zhuan)動(dong)(dong)(dong)絲(si)桿旋輪。）洛(luo)氏硬(ying)(ying)(ying)度(du)(du)計(ji)是(shi)依據洛(luo)氏硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)(shi)驗(yan)原理設計(ji)的(de)(de)(de)(de)，只需要(yao)單側接觸(chu)(chu)試(shi)(shi)(shi)(shi)樣便(bian)可測(ce)(ce)試(shi)(shi)(shi)(shi)金屬硬(ying)(ying)(ying)度(du)(du)。現我國已生產(chan)觸(chu)(chu)摸屏控制和數值(zhi)顯(xian)示以及曲線顯(xian)示并自(zi)(zi)(zi)(zi)(zi)動(dong)(dong)(dong)打印測(ce)(ce)試(shi)(shi)(shi)(shi)數據的(de)(de)(de)(de)洛(luo)氏硬(ying)(ying)(ying)度(du)(du)計(ji)。洛(luo)氏硬(ying)(ying)(ying)度(du)(du)計(ji)的(de)(de)(de)(de)特點是(shi)操(cao)作簡單，測(ce)(ce)量迅速，并可從百分(fen)表或光(guang)學投(tou)影屏上直接讀數。同布氏和維(wei)氏硬(ying)(ying)(ying)度(du)(du)檢測(ce)(ce)法(fa)(fa)一(yi)樣，洛(luo)氏硬(ying)(ying)(ying)度(du)(du)計(ji)成(cheng)為三種(zhong)較常用的(de)(de)(de)(de)硬(ying)(ying)(ying)度(du)(du)檢測(ce)(ce)法(fa)(fa)之一(yi)。柳州高階洛(luo)氏硬(ying)(ying)(ying)度(du)(du)計(ji)測(ce)(ce)試(shi)(shi)(shi)(shi)標準

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