洛氏(shi)(shi)硬(ying)(ying)度(du)計(ji)(ji)的(de)(de)(de)(de)穩(wen)定(ding)性檢(jian)(jian)測(ce)：由(you)于(yu)(yu)硬(ying)(ying)度(du)計(ji)(ji)法定(ding)計(ji)(ji)量(liang)(liang)的(de)(de)(de)(de)周(zhou)期一(yi)般(ban)是(shi)一(yi)年，未發生重(zhong)大異常(chang)時(shi)，實驗(yan)(yan)室一(yi)般(ban)不(bu)會重(zhong)新計(ji)(ji)量(liang)(liang)，因此實驗(yan)(yan)室用硬(ying)(ying)度(du)計(ji)(ji)的(de)(de)(de)(de)穩(wen)定(ding)性直(zhi)接影(ying)響著(zhu)日常(chang)檢(jian)(jian)測(ce)結果的(de)(de)(de)(de)正確(que)性。洛氏(shi)(shi)硬(ying)(ying)度(du)計(ji)(ji)在實驗(yan)(yan)室內(nei)部開展硬(ying)(ying)度(du)計(ji)(ji)在一(yi)定(ding)時(shi)間內(nei)的(de)(de)(de)(de)穩(wen)定(ding)性研究具有重(zhong)要的(de)(de)(de)(de)意義(yi)，對于(yu)(yu)提(ti)高實驗(yan)(yan)室的(de)(de)(de)(de)管理水平和工作質(zhi)量(liang)(liang)十分(fen)重(zhong)要，尤其對于(yu)(yu)實驗(yan)(yan)室的(de)(de)(de)(de)檢(jian)(jian)測(ce)人員(yuan)養(yang)成良(liang)好的(de)(de)(de)(de)質(zhi)量(liang)(liang)觀念和質(zhi)量(liang)(liang)意識、實驗(yan)(yan)室提(ti)高市場出名(ming)度(du)和開拓檢(jian)(jian)測(ce)市場十分(fen)重(zhong)要。穩(wen)定(ding)性是(shi)指測(ce)量(liang)(liang)儀器保持其計(ji)(ji)量(liang)(liang)特性隨(sui)時(shi)間恒定(ding)的(de)(de)(de)(de)能力，洛氏(shi)(shi)硬(ying)(ying)度(du)計(ji)(ji)可以進行定(ding)量(liang)(liang)的(de)(de)(de)(de)表征，主要是(shi)確(que)定(ding)計(ji)(ji)量(liang)(liang)特性隨(sui)時(shi)間變(bian)化的(de)(de)(de)(de)關系。洛氏(shi)(shi)硬(ying)(ying)度(du)計(ji)(ji)應用與試(shi)樣硬(ying)(ying)度(du)值(zhi)接近的(de)(de)(de)(de)標準(zhun)硬(ying)(ying)度(du)塊(kuai)校機，使(shi)得試(shi)驗(yan)(yan)結果更為可靠。柳州高階洛氏(shi)(shi)硬(ying)(ying)度(du)計(ji)(ji)測(ce)試(shi)標準(zhun)

洛(luo)氏(shi)硬(ying)度(du)(du)(du)計的(de)(de)維護：1.檢查工作(zuo)臺(tai)正面和(he)(he)側面及卡(ka)具，保(bao)證沒有(you)損壞或外來(lai)物。電器裝(zhuang)置應(ying)有(you)良好的(de)(de)接地(di)線，以防漏電傷人。2.硬(ying)度(du)(du)(du)計使用(yong)(yong)前，應(ying)按(an)試驗要求選(xuan)擇相應(ying)的(de)(de)壓頭，將壓頭用(yong)(yong)無酸汽油清洗后，裝(zhuang)入主(zhu)軸襯套(tao)內(nei)固(gu)定(ding)。固(gu)定(ding)時應(ying)保(bao)持壓頭與主(zhu)軸同心(xin)。3.所有(you)工作(zuo)平臺(tai)的(de)(de)基面和(he)(he)支撐(cheng)面應(ying)清潔(jie)光滑，且不(bu)應(ying)有(you)麻(ma)坑、洛(luo)氏(shi)硬(ying)度(du)(du)(du)計大劃(hua)傷和(he)(he)外來(lai)物，工作(zuo)平臺(tai)應(ying)穩固(gu)地(di)安(an)裝(zhuang)在絲(si)杠上，不(bu)應(ying)有(you)晃(huang)動(dong)(dong)。支撐(cheng)面任(ren)何可觀察(cha)到(dao)(dao)的(de)(de)壓坑都會給薄材試驗造(zao)成(cheng)不(bu)準(zhun)確的(de)(de)結果。工作(zuo)平臺(tai)應(ying)穩固(gu)地(di)安(an)裝(zhuang)在絲(si)杠上，不(bu)應(ying)有(you)晃(huang)動(dong)(dong)。支撐(cheng)面任(ren)何可觀察(cha)到(dao)(dao)的(de)(de)壓坑都會給薄材試驗造(zao)成(cheng)不(bu)準(zhun)確的(de)(de)結果。廣州金(jin)屬淬(cui)透性(xing)末端淬(cui)火(huo)洛(luo)氏(shi)硬(ying)度(du)(du)(du)計哪家(jia)好洛(luo)氏(shi)硬(ying)度(du)(du)(du)計可到(dao)(dao)國(guo)家(jia)規(gui)定(ding)的(de)(de)計量院做第三方檢測報告。

表面(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)采(cai)(cai)(cai)用(yong)三(san)種(zhong)試(shi)(shi)(shi)驗(yan)(yan)力，常(chang)用(yong)兩種(zhong)壓頭，它們有6種(zhong)組合，對應于表面(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)的(de)(de)6個標尺。表面(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)是對洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)的(de)(de)一種(zhong)補(bu)充(chong)，在(zai)采(cai)(cai)(cai)用(yong)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)時，當(dang)遇到材(cai)(cai)料較(jiao)(jiao)薄(bo)，試(shi)(shi)(shi)樣較(jiao)(jiao)小，表面(mian)硬(ying)(ying)(ying)化層較(jiao)(jiao)淺或測試(shi)(shi)(shi)表面(mian)鍍覆層時，就(jiu)應改用(yong)表面(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)。這時采(cai)(cai)(cai)用(yong)與(yu)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)相(xiang)同的(de)(de)壓頭，采(cai)(cai)(cai)用(yong)只有洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)幾分之一大小的(de)(de)試(shi)(shi)(shi)驗(yan)(yan)力，就(jiu)可以在(zai)上述(shu)試(shi)(shi)(shi)樣上得到有效的(de)(de)硬(ying)(ying)(ying)度(du)(du)試(shi)(shi)(shi)驗(yan)(yan)結果(guo)。表面(mian)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)的(de)(de)N標尺適用(yong)于類(lei)似(si)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)的(de)(de)HRC、HRA和HRD測試(shi)(shi)(shi)的(de)(de)材(cai)(cai)料；洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)計T標尺適用(yong)于類(lei)似(si)洛(luo)(luo)氏(shi)(shi)(shi)硬(ying)(ying)(ying)度(du)(du)的(de)(de)HRB、HRF和HRG測試(shi)(shi)(shi)的(de)(de)材(cai)(cai)料。

洛(luo)(luo)(luo)氏(shi)硬(ying)(ying)度(du)(du)計的使用(yong)方(fang)法相對(dui)簡單，首(shou)先需要選(xuan)擇合適的壓頭(tou)和負(fu)(fu)荷(he)大小，然(ran)后將壓頭(tou)放(fang)在(zai)材(cai)料(liao)表面上，通過旋轉螺旋裝置施加(jia)一(yi)定的負(fu)(fu)荷(he)。負(fu)(fu)荷(he)施加(jia)后，保持一(yi)定的時(shi)間，然(ran)后卸(xie)載負(fu)(fu)荷(he)，使用(yong)顯微鏡測量(liang)(liang)(liang)壓痕的直徑。末端，根據(ju)公式(shi)計算(suan)出(chu)洛(luo)(luo)(luo)氏(shi)硬(ying)(ying)度(du)(du)值。洛(luo)(luo)(luo)氏(shi)硬(ying)(ying)度(du)(du)計具(ju)有測量(liang)(liang)(liang)簡便(bian)、結果準(zhun)確、重復(fu)性(xing)(xing)好等優點，因此(ci)被廣(guang)泛(fan)應用(yong)于各個行業。在(zai)金(jin)屬材(cai)料(liao)領(ling)域，洛(luo)(luo)(luo)氏(shi)硬(ying)(ying)度(du)(du)計可以用(yong)來評(ping)估(gu)(gu)材(cai)料(liao)的硬(ying)(ying)度(du)(du)，從(cong)而判斷(duan)材(cai)料(liao)的強度(du)(du)和耐磨性(xing)(xing)。在(zai)塑料(liao)和橡(xiang)膠領(ling)域，洛(luo)(luo)(luo)氏(shi)硬(ying)(ying)度(du)(du)計可以用(yong)來評(ping)估(gu)(gu)材(cai)料(liao)的硬(ying)(ying)度(du)(du)和彈性(xing)(xing)，從(cong)而判斷(duan)材(cai)料(liao)的質量(liang)(liang)(liang)和可用(yong)性(xing)(xing)。洛(luo)(luo)(luo)氏(shi)硬(ying)(ying)度(du)(du)計具(ju)有硬(ying)(ying)度(du)(du)值轉換功能：可轉換為(wei)維(wei)氏(shi)、布氏(shi)、洛(luo)(luo)(luo)氏(shi)、表洛(luo)(luo)(luo)等。

布(bu)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)試(shi)驗(yan)(yan)(yan)(yan)的(de)(de)(de)特點(dian)是(shi)壓痕(hen)(hen)較(jiao)大，成品檢驗(yan)(yan)(yan)(yan)有(you)困(kun)難，試(shi)驗(yan)(yan)(yan)(yan)過程比洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)試(shi)驗(yan)(yan)(yan)(yan)復雜，測(ce)量(liang)操(cao)(cao)作和壓痕(hen)(hen)測(ce)量(liang)都比較(jiao)費時(shi)，并且由于壓痕(hen)(hen)邊(bian)緣的(de)(de)(de)凸(tu)起、凹(ao)陷或圓滑(hua)過渡都會使(shi)壓痕(hen)(hen)直(zhi)徑的(de)(de)(de)測(ce)量(liang)產生較(jiao)大誤差(cha)，因(yin)此要(yao)求(qiu)操(cao)(cao)作者具有(you)熟練的(de)(de)(de)試(shi)驗(yan)(yan)(yan)(yan)技術(shu)和豐(feng)富經驗(yan)(yan)(yan)(yan)，一(yi)般要(yao)求(qiu)由專門的(de)(de)(de)實驗(yan)(yan)(yan)(yan)員操(cao)(cao)作。硬(ying)(ying)度(du)(du)(du)(du)表示材料(liao)抵抗硬(ying)(ying)物(wu)體壓入其表面(mian)的(de)(de)(de)能力。它是(shi)金(jin)屬材料(liao)的(de)(de)(de)重要(yao)性(xing)(xing)能指標(biao)(biao)之一(yi)。一(yi)般硬(ying)(ying)度(du)(du)(du)(du)越(yue)(yue)高，耐磨性(xing)(xing)越(yue)(yue)好。常用的(de)(de)(de)硬(ying)(ying)度(du)(du)(du)(du)指標(biao)(biao)有(you)布(bu)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)、洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)和維氏(shi)硬(ying)(ying)度(du)(du)(du)(du)。金(jin)屬材料(liao)的(de)(de)(de)各(ge)種硬(ying)(ying)度(du)(du)(du)(du)值(zhi)之間，硬(ying)(ying)度(du)(du)(du)(du)值(zhi)與強度(du)(du)(du)(du)值(zhi)之間具有(you)近似的(de)(de)(de)相應(ying)關系。因(yin)為(wei)硬(ying)(ying)度(du)(du)(du)(du)值(zhi)是(shi)由起始(shi)塑(su)性(xing)(xing)變(bian)(bian)形(xing)(xing)抗力和繼(ji)續塑(su)性(xing)(xing)變(bian)(bian)形(xing)(xing)抗力決定的(de)(de)(de)，材料(liao)的(de)(de)(de)強度(du)(du)(du)(du)越(yue)(yue)高，塑(su)性(xing)(xing)變(bian)(bian)形(xing)(xing)抗力越(yue)(yue)高，洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)計(ji)硬(ying)(ying)度(du)(du)(du)(du)值(zhi)也(ye)就越(yue)(yue)高。但各(ge)種材料(liao)的(de)(de)(de)換算關系并不一(yi)致。洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)計(ji)工作平臺(tai)應(ying)穩固地安裝在絲(si)杠上，不應(ying)有(you)晃動。鄭州洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)(du)計(ji)哪家(jia)好

洛氏(shi)硬(ying)度(du)(du)計由于壓痕較大，一般不(bu)用于成品檢測。柳州高階洛氏(shi)硬(ying)度(du)(du)計測試標準

全自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)數(shu)顯洛(luo)氏(shi)硬(ying)度(du)(du)計特點：自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)升降絲杠、自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)選擇試(shi)驗(yan)力、自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)加(jia)載(zai)初試(shi)驗(yan)力、自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)加(jia)載(zai)主試(shi)驗(yan)力，自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)卸載(zai)、自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)顯示(shi)硬(ying)度(du)(du)值，操(cao)作步(bu)驟：一鍵式(shi)操(cao)作：按(an)啟動(dong)(dong)(dong)(dong)(dong)(dong)鍵，工(gong)作臺(tai)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)上升，樣品觸(chu)碰到(dao)壓頭后(hou)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)加(jia)載(zai)，自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)卸載(zai)，自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)顯示(shi)硬(ying)度(du)(du)值。（工(gong)作臺(tai)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)升降（沒有高(gao)(gao)度(du)(du)限制(zhi)），無需(xu)人工(gong)轉動(dong)(dong)(dong)(dong)(dong)(dong)絲桿旋輪。）洛(luo)氏(shi)硬(ying)度(du)(du)計是(shi)(shi)依(yi)據洛(luo)氏(shi)硬(ying)度(du)(du)試(shi)驗(yan)原理設計的，只需(xu)要單側(ce)接觸(chu)試(shi)樣便可測(ce)(ce)試(shi)金屬硬(ying)度(du)(du)。現我(wo)國已生產觸(chu)摸屏控制(zhi)和數(shu)值顯示(shi)以及曲線(xian)顯示(shi)并自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)打印測(ce)(ce)試(shi)數(shu)據的洛(luo)氏(shi)硬(ying)度(du)(du)計。洛(luo)氏(shi)硬(ying)度(du)(du)計的特點是(shi)(shi)操(cao)作簡單，測(ce)(ce)量(liang)迅速(su)，并可從百分表(biao)或(huo)光學(xue)投影屏上直接讀數(shu)。同布(bu)氏(shi)和維(wei)氏(shi)硬(ying)度(du)(du)檢測(ce)(ce)法(fa)一樣，洛(luo)氏(shi)硬(ying)度(du)(du)計成為三(san)種(zhong)較常(chang)用的硬(ying)度(du)(du)檢測(ce)(ce)法(fa)之一。柳州高(gao)(gao)階(jie)洛(luo)氏(shi)硬(ying)度(du)(du)計測(ce)(ce)試(shi)標準

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