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    • 维氏硬度计工作原理简述
    • 本站编辑:莱州市试验机金刚石工具厂发布日期:2020-09-01 09:53 浏览次数:

    提起硬度计,我们不少人可能陌生的很,不知道这是个什么东西。其广泛应用于测定微小、薄形试件、表面渗镀层等试件的显微硬度和测定玻璃、陶瓷、玛瑙、人造宝石等较脆而又硬的材料的努氏硬度,是科研机构、工厂及质监部门进行材料研究和检测的理想硬度测试仪器。不过对其的基本原理并不是很清楚,因此小编就维氏硬度计工作原理简述,下面让我们一起了解下吧!


      维氏硬度计原理:

      以49.03~980.7N的负荷,将相对面夹角为136°的方锥形金刚石压入器压材料表面,保持规定时间后用测量压痕对角线长度,可燃气体检测仪再按公式来计算硬度的大小。它适用于较大工件和较深表面层的硬度测定。维氏硬度尚有小负荷维氏硬度试验负荷1.961~<49.03N,粗糙度仪维修它适用于较薄工件、工具表面或镀层的硬度测定;显微维氏硬度试验负荷<1.961N,风速仪适用于金属箔、极薄表面层的硬度测定。HV-适用于显微镜分析。维氏硬度(HV) 以120kg以内的载荷和顶角为136°的金刚石方形锥压入器压入材料表面用材料压痕凹坑的表面积除以载荷值即为维氏硬度值(HV)的换算。

    维氏硬度计工作原理简述

       维氏硬度的表示方法:

      维氏硬度表示为HV维氏硬度符号HV前面的数值为硬度值后面为试验力值。标准的试验保持时间为10~15S。如果选用的时间超出这一范围在力值后面还要注上保持时间。例如:

      600HV30—表示采用294.2N(30kg)的试验力保持时间10~15S时得到的硬度值为600。

      600HV30/20—表示采用294.2N(30kg)的试验力保持时间20S时得到的硬度值为600。

      以上的介绍大概就是关于维氏硬度计工作原理简述,在使用的时候,一定要了解清楚,这样方便更好的使用。

    When we mention the hardness tester, many of us may be unfamiliar with it. We don't know what it is. It is widely used to measure the microhardness of micro and thin specimens, surface coating and other specimens, and to determine the Knoop hardness of brittle and hard materials such as glass, ceramics, agate and artificial gems. It is an ideal hardness testing instrument for research and testing of materials in scientific research institutions, factories and quality supervision departments. However, its basic principle is not very clear, so the working principle of Vickers hardness tester is briefly introduced. Let's understand it together!

    Principle of Vickers hardness tester:

    Under the load of 49.03 ~ 980.7n, the square cone-shaped diamond with a relative angle of 136 ° is pressed into the surface of the pressing material, and the diagonal length of the indentation is measured after the specified time, and the hardness is calculated by the combustible gas detector according to the formula. It is suitable for hardness measurement of larger workpieces and deeper surface layers. The Vickers hardness has small load Vickers hardness test load of 1.961 ~ < 49.03n. It is suitable for the hardness measurement of thin workpiece, tool surface or coating; the micro Vickers hardness test load is less than 1.961n, and the anemometer is suitable for the hardness measurement of metal foil and extremely thin surface layer. HV - suitable for microscopic analysis. Vickers hardness (HV) is the conversion of Vickers hardness (HV) when the load is less than 120kg and the diamond square cone impactor with a top angle of 136 ° is pressed into the material surface, and the surface product of indentation pits is divided by the load value, which is the conversion of Vickers hardness value (HV).

    Working principle of Vickers hardness tester

    The expression method of Vickers hardness is as follows:

    Vickers hardness is expressed as HV Vickers hardness symbol. The value in front of HV is the hardness value, and the following is the test force value. The standard test holding time is 10 ~ 15s. If the selected time is beyond this range, the holding time should be noted after the force value. For example:

    600hv30 - indicates that the hardness value is 600 when 294.2n (30kg) test force is used for 10-15s.

    600hv30 / 20 - indicates that the hardness value is 600 with 294.2n (30kg) holding time of 20s.

    The above introduction is about the working principle of Vickers hardness tester, in use, we must understand clearly, so as to facilitate better use.