里氏硬度计选购时需要注意标准

首先，我们需要了解我们需要检测的工件的规格以及工件的尺寸、厚度、表面粗糙度等物理性能。 工件的材质也会对测试结果产生不同的影响，如铝、铜、工具钢等特殊材质，不同材质的回弹模量不同，冲量装置的选择极为重要 为测试结果。

  购买里氏硬度计的目的是需要测试的硬度值，HL、HB、HRC、HRB、HV、HS。 如果您满足以上条件，就可以购买一台硬度计，可以提高您的工作效率。 硬度计可以在一个屏幕上同时显示以上6个单位的硬度值。

  真正的里氏硬度计符合国家和国际标准并且可以互换。 虽然国内有关部门制定了里氏硬度计标准，但一些厂家有技术实力生产出符合标准的里氏硬度计，所以采用修改后的方法生产里氏硬度计。 然而，它与真正的里氏硬度计相去甚远。 原厂硬度值不准的硬度计，校正后也能满足硬度试块的要求，所以用户要好好选择。

  本仪器需要注意真里氏硬度计的以下特点：

  冲击装置是可互换的。 一台里氏硬度计主机可同时配备七种不同类型的冲击装置； 一台主机上可以配置多台同类型的冲击设备。

  冲击装置的冲头是可更换的。 仪器冲击单元的冲头是可更换的。 同类型冲击装置的冲头可相互更换，不影响测量值。

  仪表不可调。 里氏硬度计出厂后不可调节。 当因球头磨损导致测量值不准确时，应通过更换球头来解决。

  仪器的测量误差在全硬度范围内均符合标准要求。 仪器的测量误差在硬度从低到高的整个范围内均满足标准规定的误差要求。

First of all, we need to understand the specifications of the workpiece we need to test and the physical properties of the workpiece such as size, thickness and surface roughness. The material of the workpiece will also have different effects on the test results, such as aluminum, copper, tool steel and other special materials, the springback modulus of different materials is different, the choice of impulse device is very important for the test results.

The purpose of purchasing the Richter hardness tester is to test the hardness values, HL, HB, HRC, HRB, HV, HS. If you meet the above conditions, you can buy a hardness tester, can improve your work efficiency. The durometer can display all six of these hardness values on a single screen.

The true Richter hardness tester conforms to national and international standards and is interchangeable. Although the relevant departments in China have formulated the Standard of The Richter hardness tester, some manufacturers have the technical strength to produce the Richter hardness tester that meets the standard, so the modified method is used to produce the Richter hardness tester. However, it is a far cry from a true Richter hardness tester. The original hardness value is not accurate hardness tester, after correction can also meet the requirements of hardness test block, so the user should choose well.

This instrument needs to pay attention to the following characteristics of true Richter hardness tester:

The impact device is interchangeable. A Richter hardness tester host machine can be equipped with seven different types of impact devices; Multiple impact devices of the same type can be configured on one host.

The punch of the impact device is replaceable. The punch of the instrument impact unit is replaceable. The punch of the same type of impact device can be replaced with each other without affecting the measured value.

Meter is not adjustable. The Richter hardness tester cannot be adjusted after leaving the factory. When the measurement value is not accurate due to the wear of the ball head, the ball head should be replaced to solve the problem.

The measurement errors of the instrument are in line with the standard requirements within the range of full hardness. The measurement error of the instrument meets the standard error requirement in the whole range of hardness from low to high.