HBRVU-187.5型布洛维光学硬度计采用了旋转试验力变换机构和光学测量指示系统，在机体上装有压痕测量装置。本机具有多种试验力和多种压头，用于测定金属材料或试件的布氏、洛氏、维氏硬度，是一台可以用不同试验方法来测量材料硬度的多用硬度计。

    该机广泛适用于黑色金属、有色金属和硬质合金及渗碳层与化学处理层的硬度测定。被广泛用于工厂车间、实验室大专院校和科研机构。

    Model HBRVU-187.5 Brinell Rockwell &Vickers Optical Hardness Tester carries a series of rotating testing force and Optical measurement indication system, and owns pressure trace measuring device. It fits different types of testing force and indenter, which are usually used to measure the Brinell Rockwell &Vickers hardness of metal materials or spicemen. In a word, it is a multipurpose durometer which can measure hardness by various of testing means.

    This device is widely used in the testing of black metal, non-ferrous metal, carbide alloy, acieration tier and chemical treatment tier, and normally used in factory workshops, labs, universities and colleges, and institution for scientific research.   

  

主要技术参数		Main technical parameters
初试验力(N)：98		Preliminary test force(N)：98
总试验力		Total test force
维氏硬度试验(N)：294、588、980		Vickers hardness test(N)：294、588、980
洛氏硬度试验（N）：588、980、1471		Rockwell hardness test(N):588、980、1471
布氏硬度试验(N)：306、613、1839		Brinell Hardness test(N):306、613、1839
显微镜放大倍率：37.5×、75×		magnification of microscope：37.5×、75×
测微鼓轮最小分度值:		Measure tiny drum wheel minimum scale division value：
37.5×时为0.004毫米		0.004mm for 37.5×
75×时为0.002毫米		0.002mm for 75×
试件允许最大高度(mm)：180		Max height of speciments(mm)：180
压头中心到机身距离(mm)：200		Distance from indeneter, s center to outerwall(mm)：200
硬度计外形尺寸(mm)：560×260×760		Machine size(mm)：560×260×760
电源电压：AC220V		Power supply：AC220V
仪器重量(kg)：90		Weight(kg)：90
硬度测试范围		Degree of hardness test seope
洛氏硬度试验		Rockwell hardness test
(70-85)HRA		(70-85)HRA
(30-100)HRB		(30-100)HRB
(20-67)HRC		(20-67)HRC
示值精度：±1HR		Show value accuracy：±1HR
布氏硬度试验		Vickers Hardness test
(4-450)HB		(4-450)HB
示值精度：P≥1839N ±3%   P＜1839N ±4%		Show value accuracy：P≥1839N ±3%   P＜1839N ±4%
维氏硬度试验		Vickers hardness test
(14-1000)HV		(14-1000)HV
示值精度：±3%		Show value accuracy：±3%