Brinell hardheidsmeter

QATM's Brinell Hardness tester range comprises models for both micro and macro hardness testing. All models are suitable for multiple test methods in addition to Brinell testing and range from semi-automatic operation to full automation. QATM products are characterized by operating comfort, sophisticated engineering and accurate results.

Micro Brinell hardheidsmeter Testkracht bereik: 0.25 g – 62.5 kg

NIEUW

Brinell hardheidsmeter QNESS 10/60 M

Halfautomatisch
Testkracht bereik 20 gf – 10 kgf
Option: 0.25 gf – 62.5 kgf
Vickers, Knoop, Brinell, Option: Rockwell
Manual XY movable cross table
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NIEUW

Brinell hardheidsmeter QNESS 10/60 A+

Fully automated
Testkracht bereik 20 gf – 10 kgf
Option: 0.25 gf – 62.5 kgf
Vickers, Knoop, Brinell, Option: Rockwell
Very precise XY slide ± 2µm
Monsterbeeldcamera:
Product Details

NIEUW

Brinell hardheidsmeter Qness 60 A+ EVO

High-End fully automated
Testkracht bereik 0.25 gf – 62.5 kgf
Vickers, Knoop, Brinell, Rockwell
High precision XY slide ± 0.2µm
Monsterbeeldcamera
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Macro Brinell hardheidsmeter Testkracht bereik: 0.3 kg – 3000 kg

Brinell hardheidsmeter Model CS/C EVO

Test methodes: Brinell, Knoop, Rockwell, Vickers
Testkracht bereik: 0.3 kg – 3000 kg
Proven concept – redefined
Ideal for small samples
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Brinell hardheidsmeter Model M EVO

Test methodes: Brinell, Knoop, Rockwell, Vickers
Testkracht bereik: 0.3 kg – 3000 kg
Manual height adjustable test head
Ideal for large samples
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Brinell hardheidsmeter Model E EVO

Test methodes: Brinell, Knoop, Rockwell, Vickers
Testkracht bereik: 0.3 kg – 3000 kg
Comfortable test head height-adjustment via motor
All work piece sizes and large clamping forces
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Volautomatische Brinell hardheidsmeter Testkracht bereik: 0.3 kg – 3000 kg

Brinell hardheidsmeter Model CA/CA+ EVO

Test methodes: Brinell, Knoop, Rockwell, Vickers
Testkracht bereik: 0.5 kg – 750 kg
Bewezen concept - volledige automatisering met zeer nauwkeurige XY-slede
Voor toepassingen met consistente monsterhoogte
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Brinell hardheidsmeter Model A/A+ EVO

Test methodes: Brinell, Knoop, Rockwell, Vickers
Testkracht bereik: 0.3 kg – 3000 kg
Zeer nauwkeurige testkopbesturing door asynchrone motor
Automatische XYZ-testvoortgang voor verschillende monsterhoogtes
Basiskast en veiligheid volledig geïntegreerd in machineontwerp
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Brinell Testopstelling

Test methodes: Brinell, Rockwell
Testkracht bereik: 60 kg - 3000 kg
Fully automatic hardness testing plant with test point preparation
HBW 10/3000, HBW 5/750, HRC
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Achtergrond informatie Brinell hardheidstest (DIN EN ISO 6506)

Johann August Brinell (Zweden) presenteerde zijn nieuwe hardheidsmethode op de wereldtentoonstelling in Parijs in 1900.

Bij deze methode wordt een hardmetalen kogel met een bepaalde kracht verticaal in het oppervlak van een monster gedrukt. Hierdoor ontstaat een inkeping in het oppervlak van het monster. De diameter van de indrukking d wordt bepaald met behulp van een meetmicroscoop en de Brinell-hardheid wordt berekend of uit de bijbehorende tabellen gehaald.

1. Indentation of a hard metal ball with ØD and test force F in the specimen

2. Measurement of the indentation with diameter d

Calculation of the Brinell Hardness

Calculation formula for Brinell hardness:

For the Brinell hardness test, the selection of suitable test parameters is of decisive importance.

The Brinell method becomes inaccurate for very small or very large penetration depths. For this reason, the test load must be selected such that the following conditions are met for the mean indentation diameter:

0,24 * D < d <0,6 * D

In order to meet these conditions, 'Stress level B' was introduced. This depends on the material group to be tested.

The stress level is selected according to the following table:

Stress level B for Brinell Hardness Testers

Material	Stress level B [N/mm²]	Ball diameterD [mm]	Test forceF [N]	Recordable Hardness Range [HBW]
Steel and cast steel Nickel and titanium alloys Cast iron ≥ 140 HBW Cu and Cu alloys ≥ 200 HBW	30	1 2,5 5 10	2,94,2 1839 7355 29420	95 – 650
Light metals and their alloys ≥ 35 HBW	15	1 2,5 5 10	- - - 14710	48 – 327
Cast iron < 140 HBW Cu and Cu alloys 350-200 HBW	10	1 2,5 5 10	98,07 612,9 2452 9807	32 – 218
Cu and Cu alloys < 35 HBW Light metals and their alloys ≥ 35 < HBW < 80	5	1 2,5 5 10	49,03 306,5 1226 4903	16 – 109
Light metals and their alloys ≥ 35 HBW	2,5	1 2,5 5 10	24,52 153,2 612,9 2452	8 – 55
Lead and tin	1	1 2,5 5 10	9,807 61,29 245,2 98,7	3 – 22

According to DIN EN ISO 6506
Only ball diameters >1 mm may be used for testing cast iron

After the degree of stress has been determined, test load F and ball diameter D can be determined according to the table. In principle, the ball diameter should be as large as possible in order to cover
as large and therefore representative a part of the sample surface as possible.

Hardness values determined with different ball diameters at the same degree of loading can only be compared to a limited extent. Hardness values determined with the same ball diameter but different degrees of loading are not comparable. Therefore, it is essential that all parameters are always specified when specifying a hardness value.

Brinell Hardness testing Results

According to DIN EN IS 6506-1 the result of a Brinell hardness test is indicated as follows:

310 HBW 2,5 / 187,2 / 20 ⇒ Hardness value as per Brinell

310 HBW 2,5 / 187,2 / 20 ⇒ Abbreviation for Brinell hardness

310 HBW 2,5 / 187,2 / 20 ⇒ Ball diameter in mm

310 HBW 2,5 / 187,2 / 20 ⇒ Test force [N] = 9.807 * test force specification

310 HBW 2,5 / 187,2 / 20 ⇒

Application time of the test force

(omitted if it is between 1-15 s)

Further prerequisites for Brinell hardness testing

More prerequisites need to be fulfilled for standard-compliant testing:

Test temperature

normal requirements: 10°C bis 35°C
high requirements: 23°C ± 5°C

Distances between the indentations and from the edge

a ≥ 2,5 * d
b ≥ 3,5 * d