as for the problem of surface rockwell hardness measurement of deep hole in measurement field, this article develops a kind of portable micro-control surface rockwell apparatus.

1、

this instrument may measure not only in-hole surface rockwell hardness of oil pump tube, but also that of other deep-hole tubes.

既可应用于石油泵管内孔表面洛氏硬度测量，亦可应用于其它深孔管件的内孔表面洛氏硬度测量。

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2、

model hr-150al is a high distance rockwell hardness tester. it's fit for testing rockwell hardness of metal material.

HR-150AL加高手动洛氏硬度计是一种高行程洛氏硬度测试仪器，适用于金属材料的洛氏硬度试验。

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3、

the results show that the resistivity decreases and rockwell hardness and wear resistance increase with the increase of mos 2 in the composite.

结果表明，随二硫化钼含量的增加，该复合材料的电阻率降低，硬度升高，耐磨性有所增加；

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4、

the effect of uncertainty evaluation in rockwell hardness test is described by analyzing and calculating the uncertainty of metal in rockwell hardness test.

通过对金属在洛氏硬度实验检测中的不确定度的分析与计算，介绍不确定度的评定在洛氏硬度实验检测中的作用。

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5、

the rockwell hardness measurement was monitored with a digital video camera and a curve of the indentation depth against time was obtained.

将数码摄像技术与传统的洛氏硬度计相结合，通过对测试过程的实时监控，得到压痕深度随时间变化的曲线。

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6、

the national standard gb/ t 230.2-2002 about metallic rockwell hardness test which put into practice on may 1st, 2003 was introduced.

介绍了从2003年5月1日起开始实施的金属洛氏硬度试验国家标准GB/T230.2-2002；

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7、

it was found that the surface roughness is significant in brinell hardness testing, but has little influence on rockwell hardness.

结果表明，表面粗糙度对布氏硬度值有重要影响，而洛氏硬度值与表面粗糙度关系不大。

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8、

the polymer has tensile strength 11.79 mpa, elongation at break 2.1% and rockwell hardness number 122.

聚合物拉伸强度为11.79MPa，断裂伸长率为2.1%，洛氏硬度为122。

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9、

by the hardness test of carbon steel sample, the measurement uncertainty for rockwell hardness of b gauge is studied.

通过碳钢样品的硬度试验对洛氏硬度B标尺的测量不确定度进行了研究。

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10、

a comparative study of impact strength and rockwell hardness on nano composite denture base resin and traditional denture base resin

纳米基托复合树脂与传统基托树脂冲击强度及洛氏硬度的对比研究

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11、

the basic principles and practical applications of measurement uncertainty are introduced by evaluating and analyzing measurement of metal rockwell hardness c.

通过对金属洛式硬度C标尺的不确定度评定与分析，介绍了不确定度的基本原理及其在硬度实验中的实践应用。

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12、

a case of regulation and service on hrd-150 electrical rockwell hardness tester

HRD-150型电动洛氏硬度计调修实例

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13、

the evaluation of measurement uncertainty for rockwell hardness ( scale a) test of cemented carbide

硬质合金洛氏硬度（A标尺）测量不确定度的评定

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14、

the testing technology of rockwell hardness and uncertainty in measurement of rockwell hardness blocks

洛氏硬度测量的误差来源及洛氏硬度块的测量结果不确定度

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15、

finite element analysis of rockwell hardness

洛氏硬度的有限元解析

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16、

the appreciation on the uncertainty on measuring metal rockwell hardness

金属洛氏硬度试验测量不确定度评定

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17、

choices of loading speed and keeping time of gross load for rockwell hardness tests

洛氏硬度试验中加荷速度和总负荷保持时间的选择

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18、

introduction and analysis of new standard gb/ t 230.2 about rockwell hardness tester

新洛氏硬度国家标准GB/T230.2介绍及技术对比分析

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19、

evaluation of uncertainty in rockwell hardness test the measurement uncertainty estimation of environmental chamber temperature performance

测量洛氏硬度过程中不确定度的评定环境试验箱温度性能不确定度的评定

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20、

comparison and analysis of evaluating methods of uncertainty in measuring metal rockwell hardness in foreign standard

国外标准中洛氏硬度值测量不确定度的评定方法对比与分析

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