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Digital Low Load Brinell Hardness HBW tester

Model: HBS-62.5

Brinell hardness tester is a precision metrological instrument for measuring the Brinell hardness of metals. The Brinell hardness tester is mainly used to measure the hardness of materials such as cast iron, steel, non-ferrous metals, and soft alloys. The Brinell hardness test is the hardness test method with the largest indentation among all hardness tests. It can reflect the comprehensive performance of the material and is not affected by micro-segregation or uneven composition of the sample, making it a relatively high-precision hardness testing method. 


HBS-62.5 digital display small-load Brinell hardness tester is a high-tech product integrating optics, mechanics, and electronics. This machine has a novel design, good reliability, operability, and intuitiveness. It is a new type of micro Vickers and Knoop hardness tester that uses precision mechanical technology and photoelectric technology. 

General Introduction

Brinell hardness tester is a precision metrological instrument for measuring the Brinell hardness of metals. The Brinell hardness tester is mainly used to measure the hardness of materials such as cast iron, steel, non-ferrous metals, and soft alloys. The Brinell hardness test is the hardness test method with the largest indentation among all hardness tests. It can reflect the comprehensive performance of the material and is not affected by micro-segregation or uneven composition of the sample, making it a relatively high-precision hardness testing method. 


HBS-62.5 digital display small-load Brinell hardness tester is a high-tech product integrating optics, mechanics, and electronics. This machine has a novel design, good reliability, operability, and intuitiveness. It is a new type of micro Vickers and Knoop hardness tester that uses precision mechanical technology and photoelectric technology. 


Key Features

  • Features
  • Application
  • Standard
  • Working principle

1, The machine uses computer software programming and an optical measurement system.

2, Through soft-key input, different indenters and force values can be selected for measurement, the intensity of the measurement light source can be adjusted, and holding time can be chosen.

3, LCD screen can display the indenter diameter, test force, measurement range, and directly read out the hardness value on the screen, simplifying the tedious table lookup.

4, It is convenient to use, and due to the use of a rotary encoder, the measurement accuracy is higher.


Because Brinell hardness testing uses large pressure, large indenter ball diameter, and large indentation diameter, it is suitable for hardness testing of metals with large grains, such as cast iron, non-ferrous metals and their alloys, various annealed and tempered materials, and most steel supplied from the factory. The instrument selects a relatively small portion of Brinell hardness force values, making it particularly suitable for softer metals such as pure aluminum, copper, lead, tin, zinc, and their alloys. The measured hardness is very accurate, and Brinell hardness has high measurement precision, thus providing good reproducibility and representativeness.


Brinell hardness testing uses high test forces and produces large indentations, making it suitable for hardness testing of metals with large grains, such as cast iron, non-ferrous metals and alloys, steel after various annealing and quenching treatments, and especially for relatively soft metals like pure aluminum, lead, and tin.

Electronic Brinell hardness testers use high test forces and produce large indentations, suitable for testing metals with large grains, such as cast iron, non-ferrous metals, alloys, and steel after various annealing and quenching treatments, particularly for softer metals like pure aluminum, lead, and tin, as well as hardness testing of ferrous and non-ferrous metals. 


Brinell hardness testers can be used to test castings, forgings, steel in supplied condition, non-ferrous metals, and semi-finished steel products that have undergone quenching and tempering. This is a portable instrument suitable for workshop use, simple to operate, easy to carry, and capable of on-site testing of large workpieces without sampling, enabling individual inspection of large workpieces.


Brinell hardness testers are mainly used for hardness testing of wrought steel and cast iron with uneven structures. The Brinell hardness of wrought steel and gray cast iron corresponds well with tensile testing results. Brinell hardness testing can also be applied to non-ferrous metals and mild steel; using a small-diameter ball indenter allows measurement of small-sized and thinner materials. Brinell hardness testers are often used for inspection of raw materials and semi-finished products; due to the large indentation, they are generally not used for finished product testing.


The selection of Brinell hardness test conditions is similar to the choice of scale in Rockwell hardness testing. Brinell hardness testing also faces the issue of selecting test conditions, namely the choice of test force F and indenter ball diameter D. This choice is not arbitrary but must follow certain rules, paying attention to the reasonable combination of test force and indenter diameter. Its application is slightly more complex compared to Rockwell hardness testing.


ASTM E10 “Standard Test Method for Brinell Hardness of Metallic Materials”


ISO 6506 “Metallic materials -- Brinell hardness test”

The working principle of the Brinell hardness tester is to press a steel ball of a certain diameter into the surface of the specimen at a certain speed under a specified test force. After maintaining the applied force for a prescribed duration, the force is removed. The Brinell hardness value of the metal is represented by the average pressure on the spherical surface area of the indentation.

Main Technical Specification

Test force1Kgf (9.8N), 6.25Kgf (61.29N), 7.813Kgf   (76.6N), 15.625Kgf (153.2N), 30Kgf (294.2N), 62.5Kgf (612.9N), Six levels in total
Test indenterφ1mm ball   indenter; φ2.5mm ball indenter
Method of applying test   forceAutomatic   loading and unloading of test force
Microscope magnification   for measurement50× (for   measurement)
Dwell time of test force0–60s (can be   input as needed)
Minimum detection unit   per division2μm
Max.   height of specimen160mm
Indenter   center to wall distance135mm
Dimensions520×190×650mm
Weight55Kg
Power supplyAC 220V, 50-60HZ,   40W
Standard AccessoriesSteel Ball   hardness indenter, Standard hardness block,    Testing table (big, medium, “V”), Weight (1, 2, 3, 4), Power   cord,  etc.


Acceessories

ItemQuantity
Frame1 set
Ball indenter with the diameter2 pcs
Standard Brinell Hardness block2 pcs
Large, medium, V-type testing bench1 set each
Weights4 pcs
Fuse 2A2 pcs
10X Micrometer Eyepiece (Rotary Encoder)1 pc
Leveling screw1 pc
Screwdriver1 pc
Power cable1 pc
Documents (Manual, packing list, certificate)


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Beijing United Test Co., Ltd.