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DHB-3000

Brinell Hardness Tester

Usage Range

The Brinell hardness tester that shows the largest indentation among all the hardness tests is able to reflect the comprehensive features of the material , and the test is unaffected by the organization micro-dioptre and the compositional unevenness of the speciment ;and hence it is a hardness testing with high precision. The Brinell hardness test is widely used in such industrial fields as metallurgy , forging , casting , unhardened steel and nonferrous metals industries, as well as in the laboratories, universities , colleges and s-cientific research institutes.
 

Mains Features

DHB-3000 Electronic Brinell Hardness Tester is a unified product combining the precise mechanical structure with the computer control by means of the mechanical and electrical circuit system, and so it is the more advanced brinell hardness tester in today’s world. The instrument adopts the motorized test force application without weight blocks, and uses 0.5‰ accuracy compression sensor to feedback the information and the CPU control system to automatically compensate the test force lost during the testing. The test force and the load dwell time can be directly set pressing the selected keys on the touch-keyboard, with reliable repetition, precise reading and easy operation.
 

Main Parameters

 

Testing range:( 8～650)HBW

Test Force:612.9N(62.5Kgf), 980N(100Kgf), 1226N(125Kgf), 

1839N(187.5Kgf), 2452N(250Kgf), 4900N(500Kgf), 7355N(750Kgf), 9800N(1000Kgf), 

14700N(1500Kgf), 29400N(3000kgf)

Accuracy of Displayed Hardness Value

Hardness Range(HBW)

Max tolerance％

Repetition％

≤ 125

± 3

≤ 3.5

125＜HBW≤225

± 2.5

≤ 3.0

＞ 225

± 2.0

≤ 2.5

Max, Height of the speciment: 225mm

Max Distance from the indenter center to the instrument panel: 135mm

Magnification of the microscope: 20X

Min Reading Grade of the Drum wheel of the microscope: 0.005mm

Power supply and Voltage: AC220V/50-60Hz

Main Accessories

Tables:Large, Small and V-shaped each

Hard Alloyed Steel Ball Indenters: ￠2.5mm, ￠5mm, and ￠10mm each.

One Microscope: 20X

Two Standard Hardness Blocks