Brinell Rockwell Vickers Hardness Machine Universal Type Hbrvu - 187.5 Ii

Model HBRVU - 187.5 II Universal Brinell, Rockwell and Vickers hardness tester

1. Brief Introduction

The hardness is one of the important indexes to determine the mechanical properties of the material, and the hardness test is a means which is used to discriminate and determine the quality of metallic materials or components of the product. The so-called hardness is meant the capability of the material which, under a certain condition, is capable to resist the press-in of another matter which will not produce residual deformation itself. The larger the resisting power is, the higher the hardness will be, and vice versa.

In the course of testing the mechanical properties, hardness measurement is the easiest, most economical, and rapidest method, and is also one of the measures which are used to inspect the quality of the product during manufacturing the machine. As the metallic hardness possesses the mutual corresponding relationship with certain other mechanic properties, hence, most metallic materials may approximately infer their other mechanical properties such as strength, fatigue, creep, wearing and internal damages etc. by determining their hardness.

Following the daily growing development of the industrial and agricultural production as well as the scientific technology, various kinds of different requirements are also demanded to the hardness tester itself, especially it demands high precision in measurement and test, and may carry out various kinds of hardness test for different kinds of materials. Based upon this, the model HBRVU - 187.5 II Brinell, Rockwell and Vickers hardness tester which is produced by our factory possesses the conditions which fulfill all the above mentioned requirements.

2. Technical Specifications

1. Primary test force 98.07 N

2. Total test force:

Rockwell Hardness test 588.4, 980.7, 1471 N

Brinell hardness test 306.5, 612.9, 1839 N

Vickers hardness test 294.2, 980.7 N

3. The measuring range of hardness:

Rockwell hardness test: 20 - 67 HRC

30- 100 HRB

70 - 85 HRA

Brinell hardness test: 4 - 450 HB

Vickers hardness test: 14 - 1000 HV

4. Magnifying power of the microscope: 37.5x, 75x

5. The minimum calibrated value of micro-measuring drum wheel:

when 37.5x, it is 0.004 mm

when 75x, it is 0.002 mm

6. Height of test piece (max): 260 mm

7. Effective test width: 200 mm

8. Power supply voltage: AC 220V

9. Dimension of the outward configuration: 660 x 300 x 900 mm

10. Weight: 130 kg.

3. Packing List

(1) Attachment box of main apparatus Conical angle 120°

diamond Rockwell indenter 1

Pyramidal angle 136° diamond Vickers indenter 1

φ1.588 mm steel ball indenter 1

φ2.5, φ5 mm steel ball indenter respectively 1

Large leveled, medium leveled,

test platform respectively 1

“V”shaped test platform 1

Standardized Rockwell hardness block

55 - 65 HRC 1

25 - 35 HRC 1

75 - 95 HRB 1

Standardized Brinell hardness block

(200 ± 50 HB 2.5/187.5/30) 1

Standardized Vickers hardness block

(450±50 HV 30) 1

Weights 5

0.5 A fuse 2

6 V 21CP lamp 2

Power supply plug 1

Operating instructions of the product

(hardness conversion table attached) 1

(2) Attachment box of surveying microscope

(goods supplied according to contract)

Surveying microscope proper 1

15x surveying micro-eyepiece 1

2.5x, 5x objective respectively 1

sliding test platform 1

Pyramidal, V shaped test platform respectively 1

Lamp shade for external lighting 1

Lamp shade for internal lighting 1

6V, 5W lamp 4