洛(luo)氏硬(ying)(ying)度(du)(du)(du)(du)计检定中常见各种误差及(ji)处理方法：压(ya)头(tou)的(de)影响：（1）金刚(gang)石(shi)压(ya)头(tou)不(bu)符合技术(shu)要(yao)求或(huo)是(shi)使用(yong)一段时间后(hou)有磨(mo)损，操(cao)(cao)作(zuo)者如不(bu)能判断金刚(gang)石(shi)的(de)好坏(huai)，可由计量测试机构进行检定。（2）钢球压(ya)头(tou)强(qiang)度(du)(du)(du)(du)和(he)硬(ying)(ying)度(du)(du)(du)(du)不(bu)够，容易产生变(bian)形。钢球扳压(ya)扁产生长(zhang)久变(bian)形后(hou)呈(cheng)椭圆，短轴(zhou)垂(chui)直于零件表面时，压(ya)痕浅(qian)，示值高；长(zhang)轴(zhou)垂(chui)直于零件表面时，压(ya)痕加深，示值降低，钢球允差小0.002mm。人(ren)为误差：（1）操(cao)(cao)作(zuo)人(ren)员技术(shu)熟练程度(du)(du)(du)(du)不(bu)够，实践(jian)经验较(jiao)差，应(ying)由熟悉(xi)硬(ying)(ying)度(du)(du)(du)(du)计的(de)人(ren)员使用(yong)；（2）洛(luo)氏硬(ying)(ying)度(du)(du)(du)(du)计加荷(he)(he)过(guo)快，持(chi)(chi)荷(he)(he)时间短，低硬(ying)(ying)度(du)(du)(du)(du)的(de)零件硬(ying)(ying)度(du)(du)(du)(du)偏(pian)高，而加荷(he)(he)过(guo)慢，持(chi)(chi)荷(he)(he)时间长(zhang)，硬(ying)(ying)度(du)(du)(du)(du)偏(pian)低，操(cao)(cao)作(zuo)时加荷(he)(he)应(ying)平(ping)整，保持(chi)(chi)一定加荷(he)(he)时间。洛(luo)氏硬(ying)(ying)度(du)(du)(du)(du)计应(ying)用(yong)与(yu)试样硬(ying)(ying)度(du)(du)(du)(du)值接近(jin)的(de)标准硬(ying)(ying)度(du)(du)(du)(du)块(kuai)校机，使得试验结果更为可靠(kao)。东(dong)莞淬(cui)火与(yu)回火调质硬(ying)(ying)度(du)(du)(du)(du)洛(luo)氏硬(ying)(ying)度(du)(du)(du)(du)计误差

洛氏(shi)(shi)硬(ying)(ying)度(du)计(ji)的(de)(de)维护：1.所有(you)(you)工(gong)作(zuo)平台(tai)的(de)(de)基面和支撑(cheng)面应清(qing)洁光滑，且不应有(you)(you)麻(ma)上现象应停止(zhi)使用。如果压(ya)头(tou)为碳化钨钢球(qiu)时(shi)，球(qiu)体表(biao)面应抛(pao)光无(wu)缺陷(xian)，钢球(qiu)突出(chu)球(qiu)套应不小于(yu)钢球(qiu)直径的(de)(de)三分之一。2.由于(yu)硬(ying)(ying)度(du)计(ji)在使用中还(hai)受到环境温度(du)、磁(ci)场、人(ren)员(yuan)、试样(yang)等因素(su)的(de)(de)影响，还(hai)会(hui)出(chu)现以(yi)上没有(you)(you)列举的(de)(de)现象，那么在以(yi)后的(de)(de)实际工(gong)作(zuo)中，通过具(ju)体故障(zhang)(zhang)分析，洛氏(shi)(shi)硬(ying)(ying)度(du)计(ji)较(jiao)终(zhong)找出(chu)合理解决办法(fa)解决，并(bing)及(ji)时(shi)进行汇总保存，便(bian)于(yu)以(yi)后能够及(ji)时(shi)迅速查找故障(zhang)(zhang)并(bing)准确排(pai)(pai)除。其它型号的(de)(de)洛氏(shi)(shi)和表(biao)面洛氏(shi)(shi)硬(ying)(ying)度(du)计(ji)的(de)(de)常见故障(zhang)(zhang)可参照本文(wen)的(de)(de)方法(fa)进行排(pai)(pai)除。佛山日(ri)本生产(chan)洛氏(shi)(shi)硬(ying)(ying)度(du)计(ji)生产(chan)厂(chang)家洛氏(shi)(shi)硬(ying)(ying)度(du)计(ji)鉴别(bie)试件较(jiao)小厚(hou)度(du)和测定试验的(de)(de)环境温度(du)。

洛(luo)氏硬(ying)(ying)度(du)(du)(du)计适(shi)用(yong)(yong)于(yu)对成(cheng)(cheng)(cheng)批加工(gong)的(de)(de)成(cheng)(cheng)(cheng)品或半(ban)成(cheng)(cheng)(cheng)品工(gong)件(jian)进(jin)行逐件(jian)检测(ce)。洛(luo)氏硬(ying)(ying)度(du)(du)(du)计可测(ce)试(shi)(shi)(shi)淬火(huo)、表面淬火(huo)钢(gang)(gang)，调(diao)质(zhi)、退火(huo)钢(gang)(gang)，冷(leng)硬(ying)(ying)铸(zhu)(zhu)件(jian)，可锻铸(zhu)(zhu)件(jian)，硬(ying)(ying)质(zhi)合(he)金(jin)钢(gang)(gang)，铝合(he)金(jin)，轴承钢(gang)(gang)，硬(ying)(ying)化薄(bo)钢(gang)(gang)板(ban)的(de)(de)硬(ying)(ying)度(du)(du)(du)。布氏硬(ying)(ying)度(du)(du)(du)计则适(shi)用(yong)(yong)于(yu)硬(ying)(ying)度(du)(du)(du)较(jiao)(jiao)高(gao)的(de)(de)工(gong)件(jian)的(de)(de)硬(ying)(ying)度(du)(du)(du)测(ce)试(shi)(shi)(shi)，还可用(yong)(yong)于(yu)铸(zhu)(zhu)件(jian)、锻件(jian)、供货状态(tai)的(de)(de)钢(gang)(gang)材、有色金(jin)属及经(jing)过调(diao)质(zhi)热(re)处理(li)的(de)(de)半(ban)成(cheng)(cheng)(cheng)品钢(gang)(gang)铁工(gong)件(jian)。布氏硬(ying)(ying)度(du)(du)(du)计多用(yong)(yong)于(yu)原材料和半(ban)成(cheng)(cheng)(cheng)品的(de)(de)检测(ce)，由于(yu)压(ya)痕(hen)较(jiao)(jiao)大(da)，一般不用(yong)(yong)于(yu)成(cheng)(cheng)(cheng)品检测(ce)。它的(de)(de)试(shi)(shi)(shi)验(yan)(yan)数据稳定，精度(du)(du)(du)高(gao)于(yu)洛(luo)氏，其缺点压(ya)痕(hen)较(jiao)(jiao)大(da)，成(cheng)(cheng)(cheng)品检验(yan)(yan)困(kun)难，试(shi)(shi)(shi)验(yan)(yan)过程(cheng)比洛(luo)氏试(shi)(shi)(shi)验(yan)(yan)复杂，测(ce)量操作和压(ya)痕(hen)测(ce)量都较(jiao)(jiao)费时。

洛(luo)(luo)氏(shi)硬(ying)度(du)计长期使(shi)用(yong)后(hou)应(ying)(ying)注(zhu)意些1、硬(ying)度(du)计长时间不(bu)使(shi)用(yong)时，应(ying)(ying)用(yong)防尘罩将(jiang)机(ji)器(qi)盖好。2、定(ding)期在丝杠(gang)与(yu)(yu)手(shou)轮的(de)(de)(de)(de)接触面(mian)(mian)注(zhu)入少量(liang)机(ji)油。3、硬(ying)度(du)计使(shi)用(yong)前(qian)，应(ying)(ying)将(jiang)丝杠(gang)顶面(mian)(mian)和(he)(he)工作(zuo)(zuo)台上端面(mian)(mian)擦(ca)净。4、定(ding)期在丝杠(gang)与(yu)(yu)手(shou)轮的(de)(de)(de)(de)接触面(mian)(mian)注(zhu)入少量(liang)机(ji)油。5、当标准硬(ying)块支(zhi)(zhi)承(cheng)面(mian)(mian)有毛刺时应(ying)(ying)用(yong)油石(shi)打光(guang)，在其不(bu)同位置(zhi)试(shi)验(yan)时，硬(ying)块应(ying)(ying)在工作(zuo)(zuo)台上拖动(dong)，不(bu)应(ying)(ying)拿离工作(zuo)(zuo)台。6、在进(jin)行硬(ying)度(du)检(jian)(jian)测的(de)(de)(de)(de)过程(cheng)中，有关(guan)的(de)(de)(de)(de)装置(zhi)是(shi)不(bu)应(ying)(ying)该受到冲击(ji)和(he)(he)振动(dong)的(de)(de)(de)(de)，以免对操作(zuo)(zuo)造成影响。7、当硬(ying)度(du)计在进(jin)行硬(ying)度(du)检(jian)(jian)测时，必须(xu)保证(zheng)检(jian)(jian)测力(li)的(de)(de)(de)(de)方向(xiang)与(yu)(yu)试(shi)样(yang)的(de)(de)(de)(de)检(jian)(jian)测面(mian)(mian)垂直(zhi)。一定(ding)要(yao)观察仔细，看他(ta)们是(shi)否垂直(zhi)。8、在任何情况下，不(bu)允许压(ya)(ya)(ya)头(tou)与(yu)(yu)试(shi)台及支(zhi)(zhi)座、试(shi)样(yang)触碰(peng)。要(yao)保证(zheng)试(shi)样(yang)支(zhi)(zhi)撑面(mian)(mian)、洛(luo)(luo)氏(shi)硬(ying)度(du)计支(zhi)(zhi)座和(he)(he)试(shi)台工作(zuo)(zuo)面(mian)(mian)上不(bu)得(de)有压(ya)(ya)(ya)痕。在进(jin)行检(jian)(jian)测时，应(ying)(ying)该应(ying)(ying)均匀平稳地(di)施加(jia)检(jian)(jian)测力(li)，不(bu)能(neng)猛(meng)然的(de)(de)(de)(de)就加(jia)检(jian)(jian)测力(li)，那样(yang)会造成冲击(ji)与(yu)(yu)振动(dong)。洛(luo)(luo)氏(shi)硬(ying)度(du)计压(ya)(ya)(ya)头(tou)与(yu)(yu)试(shi)验(yan)力(li)的(de)(de)(de)(de)不(bu)同组合。

洛(luo)(luo)(luo)氏硬(ying)度(du)(du)计数显(xian)式洛(luo)(luo)(luo)氏硬(ying)度(du)(du)计操(cao)(cao)作(zuo)步骤(zhou)，数显(xian)洛(luo)(luo)(luo)氏硬(ying)度(du)(du)计：分两种，初始(shi)试验(yan)力手动(dong)(dong)(dong)(dong)(dong)加载(zai)；主(zhu)试验(yan)力自(zi)动(dong)(dong)(dong)(dong)(dong)加载(zai)、自(zi)动(dong)(dong)(dong)(dong)(dong)保(bao)荷(he)、自(zi)动(dong)(dong)(dong)(dong)(dong)卸(xie)(xie)(xie)载(zai)；操(cao)(cao)作(zuo)步骤(zhou)：压(ya)(ya)头和样品接(jie)触，光标到“OK”处，自(zi)动(dong)(dong)(dong)(dong)(dong)加载(zai)、自(zi)动(dong)(dong)(dong)(dong)(dong)保(bao)荷(he)、自(zi)动(dong)(dong)(dong)(dong)(dong)卸(xie)(xie)(xie)载(zai)，自(zi)动(dong)(dong)(dong)(dong)(dong)显(xian)示(shi)硬(ying)度(du)(du)值(zhi)，分辨率0.1HR；初始(shi)试验(yan)力自(zi)动(dong)(dong)(dong)(dong)(dong)加载(zai)；主(zhu)试验(yan)力自(zi)动(dong)(dong)(dong)(dong)(dong)加载(zai)、自(zi)动(dong)(dong)(dong)(dong)(dong)保(bao)荷(he)、自(zi)动(dong)(dong)(dong)(dong)(dong)卸(xie)(xie)(xie)载(zai)；操(cao)(cao)作(zuo)步骤(zhou)：压(ya)(ya)头和样品间距0.5mm是，按下(xia)(xia)“加载(zai)键”，压(ya)(ya)头自(zi)动(dong)(dong)(dong)(dong)(dong)下(xia)(xia)降，自(zi)动(dong)(dong)(dong)(dong)(dong)加载(zai)、自(zi)动(dong)(dong)(dong)(dong)(dong)保(bao)荷(he)、自(zi)动(dong)(dong)(dong)(dong)(dong)卸(xie)(xie)(xie)载(zai)，压(ya)(ya)头自(zi)动(dong)(dong)(dong)(dong)(dong)提升(sheng)，自(zi)动(dong)(dong)(dong)(dong)(dong)显(xian)示(shi)硬(ying)度(du)(du)值(zhi)，分辨率0.1HR。洛(luo)(luo)(luo)氏硬(ying)度(du)(du)计成为三种较(jiao)常用的(de)硬(ying)度(du)(du)检测(ce)法(fa)之一。长春HRC洛(luo)(luo)(luo)氏硬(ying)度(du)(du)计直销厂(chang)家(jia)

洛(luo)氏(shi)硬(ying)(ying)度(du)试(shi)验采(cai)用三种(zhong)试(shi)验力，5种(zhong)压头，它们共有15种(zhong)组合。东莞淬火与回火调质(zhi)硬(ying)(ying)度(du)洛(luo)氏(shi)硬(ying)(ying)度(du)计误差

全自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)数显洛(luo)氏硬(ying)度(du)(du)(du)计，特(te)(te)点(dian)：自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)升(sheng)降丝杠、自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)选择试验力、自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)加载(zai)初(chu)试验力、自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)加载(zai)主试验力，自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)卸(xie)载(zai)、自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)显示硬(ying)度(du)(du)(du)计，操(cao)作步骤：一键(jian)式操(cao)作：按启动(dong)(dong)(dong)键(jian)，工作台自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)上升(sheng)，样品触碰到压(ya)头(tou)后自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)加载(zai)，自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)卸(xie)载(zai)，自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)显示硬(ying)度(du)(du)(du)值。（工作台自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)升(sheng)降（没有高(gao)度(du)(du)(du)限制），无需人(ren)工转动(dong)(dong)(dong)丝杆(gan)旋轮(lun)。快速测(ce)量(liang)洛(luo)氏硬(ying)度(du)(du)(du)计，洛(luo)氏硬(ying)度(du)(du)(du)计特(te)(te)点(dian)：4秒(miao)显示硬(ying)度(du)(du)(du)值；对工件(jian)表面要求低，不用去氧化皮即可测(ce)量(liang)；带夹(jia)紧(jin)装置，不用辅助支撑，可自(zi)(zi)(zi)(zi)动(dong)(dong)(dong)夹(jia)紧(jin)长轴工件(jian)。东莞淬火(huo)与回火(huo)调质硬(ying)度(du)(du)(du)洛(luo)氏硬(ying)度(du)(du)(du)计误差

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