洛(luo)氏硬(ying)(ying)度(du)计检定(ding)中常见各种误(wu)差(cha)及处理方法：压(ya)头(tou)的影响：（1）金(jin)刚(gang)(gang)石压(ya)头(tou)不符合技(ji)术(shu)要求或(huo)是使(shi)用一段时(shi)(shi)间(jian)后有磨损，操作(zuo)者如不能(neng)判断金(jin)刚(gang)(gang)石的好坏，可(ke)由计量测试(shi)机构进行检定(ding)。（2）钢(gang)球(qiu)(qiu)压(ya)头(tou)强度(du)和硬(ying)(ying)度(du)不够(gou)，容易产(chan)生变形(xing)。钢(gang)球(qiu)(qiu)扳压(ya)扁产(chan)生长(zhang)久变形(xing)后呈(cheng)椭圆(yuan)，短轴垂(chui)直于零件(jian)表(biao)面时(shi)(shi)，压(ya)痕(hen)浅(qian)，示值(zhi)高(gao)；长(zhang)轴垂(chui)直于零件(jian)表(biao)面时(shi)(shi)，压(ya)痕(hen)加深(shen)，示值(zhi)降(jiang)低(di)(di)，钢(gang)球(qiu)(qiu)允差(cha)小(xiao)0.002mm。人为(wei)误(wu)差(cha)：（1）操作(zuo)人员技(ji)术(shu)熟练(lian)程度(du)不够(gou)，实践经验较差(cha)，应由熟悉硬(ying)(ying)度(du)计的人员使(shi)用；（2）洛(luo)氏硬(ying)(ying)度(du)计加荷(he)(he)过快(kuai)，持(chi)荷(he)(he)时(shi)(shi)间(jian)短，低(di)(di)硬(ying)(ying)度(du)的零件(jian)硬(ying)(ying)度(du)偏高(gao)，而(er)加荷(he)(he)过慢，持(chi)荷(he)(he)时(shi)(shi)间(jian)长(zhang)，硬(ying)(ying)度(du)偏低(di)(di)，操作(zuo)时(shi)(shi)加荷(he)(he)应平整，保持(chi)一定(ding)加荷(he)(he)时(shi)(shi)间(jian)。洛(luo)氏硬(ying)(ying)度(du)计应用与试(shi)样(yang)硬(ying)(ying)度(du)值(zhi)接近的标准硬(ying)(ying)度(du)块校机，使(shi)得试(shi)验结果(guo)更(geng)为(wei)可(ke)靠。东莞淬火(huo)与回火(huo)调质硬(ying)(ying)度(du)洛(luo)氏硬(ying)(ying)度(du)计误(wu)差(cha)

洛(luo)氏(shi)硬(ying)度(du)(du)计的(de)维护：1.所有(you)工作平台的(de)基面(mian)(mian)和支撑面(mian)(mian)应(ying)(ying)清(qing)洁光(guang)滑，且(qie)不(bu)应(ying)(ying)有(you)麻上(shang)现(xian)(xian)象应(ying)(ying)停止使(shi)用(yong)。如果压头为(wei)碳化钨钢球时，球体表面(mian)(mian)应(ying)(ying)抛光(guang)无(wu)缺陷(xian)，钢球突出球套(tao)应(ying)(ying)不(bu)小(xiao)于钢球直径的(de)三分之一(yi)。2.由(you)于硬(ying)度(du)(du)计在(zai)使(shi)用(yong)中还(hai)受到环境温度(du)(du)、磁(ci)场、人员、试(shi)(shi)样(yang)等(deng)因素的(de)影响，还(hai)会出现(xian)(xian)以上(shang)没有(you)列举的(de)现(xian)(xian)象，那么在(zai)以后(hou)的(de)实际工作中，通过具体故(gu)(gu)障(zhang)分析，洛(luo)氏(shi)硬(ying)度(du)(du)计较(jiao)终找出合理解决(jue)(jue)办法(fa)解决(jue)(jue)，并及时进行汇总保存，便于以后(hou)能够(gou)及时迅(xun)速查找故(gu)(gu)障(zhang)并准确排除(chu)。其它型(xing)号的(de)洛(luo)氏(shi)和表面(mian)(mian)洛(luo)氏(shi)硬(ying)度(du)(du)计的(de)常见故(gu)(gu)障(zhang)可参照本文(wen)的(de)方(fang)法(fa)进行排除(chu)。佛山(shan)日本生产洛(luo)氏(shi)硬(ying)度(du)(du)计生产厂家洛(luo)氏(shi)硬(ying)度(du)(du)计鉴(jian)别(bie)试(shi)(shi)件较(jiao)小(xiao)厚度(du)(du)和测定试(shi)(shi)验的(de)环境温度(du)(du)。

洛氏(shi)硬(ying)(ying)度(du)(du)(du)计(ji)适用(yong)(yong)于(yu)(yu)对成(cheng)批加工的(de)(de)成(cheng)品(pin)(pin)(pin)或半成(cheng)品(pin)(pin)(pin)工件进行逐件检测(ce)。洛氏(shi)硬(ying)(ying)度(du)(du)(du)计(ji)可测(ce)试(shi)淬火、表面淬火钢(gang)，调质(zhi)、退火钢(gang)，冷硬(ying)(ying)铸件，可锻铸件，硬(ying)(ying)质(zhi)合金钢(gang)，铝合金，轴承钢(gang)，硬(ying)(ying)化薄钢(gang)板的(de)(de)硬(ying)(ying)度(du)(du)(du)。布(bu)氏(shi)硬(ying)(ying)度(du)(du)(du)计(ji)则适用(yong)(yong)于(yu)(yu)硬(ying)(ying)度(du)(du)(du)较(jiao)高的(de)(de)工件的(de)(de)硬(ying)(ying)度(du)(du)(du)测(ce)试(shi)，还(hai)可用(yong)(yong)于(yu)(yu)铸件、锻件、供货(huo)状(zhuang)态的(de)(de)钢(gang)材、有色金属及(ji)经过调质(zhi)热处理的(de)(de)半成(cheng)品(pin)(pin)(pin)钢(gang)铁(tie)工件。布(bu)氏(shi)硬(ying)(ying)度(du)(du)(du)计(ji)多用(yong)(yong)于(yu)(yu)原材料和半成(cheng)品(pin)(pin)(pin)的(de)(de)检测(ce)，由于(yu)(yu)压痕(hen)较(jiao)大(da)，一般不用(yong)(yong)于(yu)(yu)成(cheng)品(pin)(pin)(pin)检测(ce)。它的(de)(de)试(shi)验数据稳定，精度(du)(du)(du)高于(yu)(yu)洛氏(shi)，其缺(que)点压痕(hen)较(jiao)大(da)，成(cheng)品(pin)(pin)(pin)检验困难，试(shi)验过程(cheng)比洛氏(shi)试(shi)验复杂(za)，测(ce)量(liang)(liang)操(cao)作和压痕(hen)测(ce)量(liang)(liang)都(dou)较(jiao)费时。

洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)计长期使用(yong)后应(ying)(ying)注意些(xie)1、硬(ying)(ying)度(du)(du)(du)计长时(shi)(shi)(shi)间不(bu)使用(yong)时(shi)(shi)(shi)，应(ying)(ying)用(yong)防尘罩(zhao)将机(ji)(ji)器(qi)盖好。2、定期在(zai)(zai)丝(si)(si)杠(gang)与(yu)手(shou)轮的(de)接触面注入少量(liang)机(ji)(ji)油(you)。3、硬(ying)(ying)度(du)(du)(du)计使用(yong)前，应(ying)(ying)将丝(si)(si)杠(gang)顶面和(he)工(gong)(gong)作(zuo)台上(shang)(shang)端(duan)面擦净。4、定期在(zai)(zai)丝(si)(si)杠(gang)与(yu)手(shou)轮的(de)接触面注入少量(liang)机(ji)(ji)油(you)。5、当(dang)标(biao)准硬(ying)(ying)块(kuai)支承面有毛刺时(shi)(shi)(shi)应(ying)(ying)用(yong)油(you)石(shi)打(da)光，在(zai)(zai)其不(bu)同(tong)位置(zhi)试验时(shi)(shi)(shi)，硬(ying)(ying)块(kuai)应(ying)(ying)在(zai)(zai)工(gong)(gong)作(zuo)台上(shang)(shang)拖动(dong)(dong)，不(bu)应(ying)(ying)拿离(li)工(gong)(gong)作(zuo)台。6、在(zai)(zai)进(jin)行(xing)硬(ying)(ying)度(du)(du)(du)检(jian)(jian)测(ce)(ce)的(de)过程中(zhong)，有关的(de)装置(zhi)是不(bu)应(ying)(ying)该(gai)受到冲击和(he)振动(dong)(dong)的(de)，以免(mian)对操作(zuo)造(zao)成影(ying)响。7、当(dang)硬(ying)(ying)度(du)(du)(du)计在(zai)(zai)进(jin)行(xing)硬(ying)(ying)度(du)(du)(du)检(jian)(jian)测(ce)(ce)时(shi)(shi)(shi)，必(bi)须保(bao)(bao)证(zheng)检(jian)(jian)测(ce)(ce)力(li)(li)的(de)方向(xiang)与(yu)试样(yang)的(de)检(jian)(jian)测(ce)(ce)面垂直(zhi)。一定要观察仔细(xi)，看他们(men)是否(fou)垂直(zhi)。8、在(zai)(zai)任何情况下，不(bu)允(yun)许压(ya)头与(yu)试台及支座(zuo)、试样(yang)触碰。要保(bao)(bao)证(zheng)试样(yang)支撑面、洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)计支座(zuo)和(he)试台工(gong)(gong)作(zuo)面上(shang)(shang)不(bu)得有压(ya)痕。在(zai)(zai)进(jin)行(xing)检(jian)(jian)测(ce)(ce)时(shi)(shi)(shi)，应(ying)(ying)该(gai)应(ying)(ying)均匀平稳地(di)施加检(jian)(jian)测(ce)(ce)力(li)(li)，不(bu)能猛(meng)然的(de)就加检(jian)(jian)测(ce)(ce)力(li)(li)，那样(yang)会(hui)造(zao)成冲击与(yu)振动(dong)(dong)。洛(luo)氏(shi)硬(ying)(ying)度(du)(du)(du)计压(ya)头与(yu)试验力(li)(li)的(de)不(bu)同(tong)组合(he)。

洛(luo)(luo)氏(shi)硬度(du)(du)计数显(xian)(xian)(xian)式洛(luo)(luo)氏(shi)硬度(du)(du)计操作(zuo)步(bu)骤(zhou)(zhou)，数显(xian)(xian)(xian)洛(luo)(luo)氏(shi)硬度(du)(du)计：分两种(zhong)(zhong)，初始(shi)试(shi)(shi)验(yan)力手动(dong)(dong)(dong)加(jia)载(zai)(zai)(zai)(zai)；主试(shi)(shi)验(yan)力自(zi)(zi)(zi)动(dong)(dong)(dong)加(jia)载(zai)(zai)(zai)(zai)、自(zi)(zi)(zi)动(dong)(dong)(dong)保(bao)(bao)荷(he)(he)、自(zi)(zi)(zi)动(dong)(dong)(dong)卸载(zai)(zai)(zai)(zai)；操作(zuo)步(bu)骤(zhou)(zhou)：压(ya)头(tou)和样品(pin)接(jie)触，光标到(dao)“OK”处(chu)，自(zi)(zi)(zi)动(dong)(dong)(dong)加(jia)载(zai)(zai)(zai)(zai)、自(zi)(zi)(zi)动(dong)(dong)(dong)保(bao)(bao)荷(he)(he)、自(zi)(zi)(zi)动(dong)(dong)(dong)卸载(zai)(zai)(zai)(zai)，自(zi)(zi)(zi)动(dong)(dong)(dong)显(xian)(xian)(xian)示硬度(du)(du)值(zhi)，分辨率0.1HR；初始(shi)试(shi)(shi)验(yan)力自(zi)(zi)(zi)动(dong)(dong)(dong)加(jia)载(zai)(zai)(zai)(zai)；主试(shi)(shi)验(yan)力自(zi)(zi)(zi)动(dong)(dong)(dong)加(jia)载(zai)(zai)(zai)(zai)、自(zi)(zi)(zi)动(dong)(dong)(dong)保(bao)(bao)荷(he)(he)、自(zi)(zi)(zi)动(dong)(dong)(dong)卸载(zai)(zai)(zai)(zai)；操作(zuo)步(bu)骤(zhou)(zhou)：压(ya)头(tou)和样品(pin)间距0.5mm是，按(an)下“加(jia)载(zai)(zai)(zai)(zai)键”，压(ya)头(tou)自(zi)(zi)(zi)动(dong)(dong)(dong)下降，自(zi)(zi)(zi)动(dong)(dong)(dong)加(jia)载(zai)(zai)(zai)(zai)、自(zi)(zi)(zi)动(dong)(dong)(dong)保(bao)(bao)荷(he)(he)、自(zi)(zi)(zi)动(dong)(dong)(dong)卸载(zai)(zai)(zai)(zai)，压(ya)头(tou)自(zi)(zi)(zi)动(dong)(dong)(dong)提(ti)升，自(zi)(zi)(zi)动(dong)(dong)(dong)显(xian)(xian)(xian)示硬度(du)(du)值(zhi)，分辨率0.1HR。洛(luo)(luo)氏(shi)硬度(du)(du)计成为三种(zhong)(zhong)较常用的硬度(du)(du)检(jian)测法之一。长春HRC洛(luo)(luo)氏(shi)硬度(du)(du)计直(zhi)销(xiao)厂家(jia)

洛氏硬度(du)(du)试(shi)验采(cai)用三种(zhong)试(shi)验力，5种(zhong)压头，它们共(gong)有(you)15种(zhong)组合。东(dong)莞(guan)淬火与回(hui)火调质硬度(du)(du)洛氏硬度(du)(du)计误差

全自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)数显(xian)洛(luo)(luo)氏硬(ying)(ying)(ying)(ying)度(du)(du)计(ji)，特(te)点：自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)升降丝杠、自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)选择(ze)试(shi)(shi)验(yan)力(li)(li)、自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)加载初试(shi)(shi)验(yan)力(li)(li)、自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)加载主试(shi)(shi)验(yan)力(li)(li)，自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)卸(xie)(xie)载、自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)显(xian)示(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)计(ji)，操作步(bu)骤：一键式操作：按启动(dong)(dong)(dong)(dong)(dong)(dong)(dong)键，工(gong)(gong)作台自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)上(shang)升，样品触(chu)碰到压头(tou)后(hou)自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)加载，自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)卸(xie)(xie)载，自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)显(xian)示(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)值(zhi)。（工(gong)(gong)作台自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)升降（没有高(gao)度(du)(du)限制），无需人工(gong)(gong)转动(dong)(dong)(dong)(dong)(dong)(dong)(dong)丝杆旋轮。快(kuai)速(su)测量(liang)洛(luo)(luo)氏硬(ying)(ying)(ying)(ying)度(du)(du)计(ji)，洛(luo)(luo)氏硬(ying)(ying)(ying)(ying)度(du)(du)计(ji)特(te)点：4秒显(xian)示(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)值(zhi)；对工(gong)(gong)件表面要求低，不用(yong)去氧化皮即可(ke)测量(liang)；带(dai)夹紧(jin)装置，不用(yong)辅(fu)助支撑，可(ke)自(zi)(zi)动(dong)(dong)(dong)(dong)(dong)(dong)(dong)夹紧(jin)长轴(zhou)工(gong)(gong)件。东莞淬火(huo)与回火(huo)调质(zhi)硬(ying)(ying)(ying)(ying)度(du)(du)洛(luo)(luo)氏硬(ying)(ying)(ying)(ying)度(du)(du)计(ji)误差

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