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Specifications

Measuring range: 20-88HRA, 20-100HRB, 20-70HRC

Test force: 588.4, 980.7, 1471N (60, 100, 150kgf)

Max. height of test piece: 400mm

Depth of throat: 160mm

Min. scale value: 0.5HR

Dimensions: 548 x 326 x 1025mm

Weight: approx. 140kg

Standard accessories

Large flat anvil: 1 pc.

Small flat anvil: 1 pc.

V-notch anvil: 1 pc.

Diamond cone penetrator: 1 pc.

1/16” steel ball penetrator: 1 pc.

Rockwell standardized block: 5 pcs.

HR-150B Heightened Rockwell Hardness Tester plays a very important role in the hardness test. Let us take a closer look at this product today.

Introduction:

HR-150B heightened Rockwell hardness tester, using the method of measuring the penetration depth, the hardness value is directly read by the indication.

Therefore, the operation is simple and convenient, easy to grasp, high work efficiency, and suitable for inspection of batch parts.

The Rockwell hardness test method can use diamond indenter and rigid ball indenter to measure hard and soft samples and has a wide range of applications. Therefore, the HR-150B Rockwell hardness test is widely used in production.

HR-150B testing

 

Detailed Introduction:

HR-150B heightened Rockwell hardness tester, using the method of measuring the penetration depth, the hardness value is directly read by the indication.

Therefore, the operation is simple and convenient, easy to grasp, high work efficiency, and suitable for inspection of batch parts.

The Rockwell hardness test method can use diamond indenter and rigid ball indenter to measure hard and soft samples and has a wide range of applications. Therefore, the HR-150B Rockwell hardness test is widely used in production.

It is the main means of testing to verify product quality and to determine a reasonable processing process.Rockwell hardness tester is the most commonly used test instrument for hardness testing and teaching and research work in production enterprises, universities and colleges.

Hardness tester scale:

A scale:Suitable for testing of hard sheet materials and surface layer hardened materials, also suitable for metal with hardness more than 70HRC such as tungsten carbide and hard alloy.

B scale:Suitable for testing of soft or medium hardness materials such as non-ferrous metals and their alloys, annealed steel or unhardened steel products.
C scale:Suitable for testing of the hardness of heat-treated steel products such as carbon steel, tool steel and alloy steel.

Technical Parameters

 

Model

 

HR-150A-Normal

HR-150B-Heightened

 

Measurement Range

 

20-88HRA、20-100HRB、20-70HRC

 

Max height of the specimen

 

200mm

400mm

 

Hard resolution

 

0.5HR

 

Test force

 

588.4N/60Kgf、980.7N/100Kgf、1471N/150Kgf

 

Dimension

 

466mm×250mm×618mm

548 x 326 x 1025mm

 

Max distance between indentation center to machine wall

 

135mm

160mm

 

Net weight

 

80kg

140kg

 

Hardness tester specimen:

Specimen shall have a certain size and thickness, and shall ensure that the distance between the center of the adjacent indentation and the center of the indentation to the edge of the specimen is greater than 3 mm, and the minimum thickness of the specimen shall not be less than eight times the depth of the indentation.

After the test, there shall be no obvious deformation marks on the support surface of the specimen. The minimum thickness depends on the material and the load used. Refer to the minimum thickness table below.

 

HR-150Bs

 

Scale

Hardness value (HR)

Mini. thickness

Scale

Hardness value (HR)

Mini. thickness

A

70

0.7

B

80

1.0

 

80

0.5

 

90

0.8

 

90

0.4

 

100

0.7

B

25

2.0

C

20

1.5

 

30

1.9

 

30

1.3

 

40

1.7

 

40

1.2

 

50

1.5

 

50

1.0

 

60

1.3

 

60

0.8

 

70

1.2

 

67

0.7

 

SPECIMEN MINI. THICKNESS TABLE

 

Indication accuracy

1.Check the accuracy of the hardness tester regularly with the standard hardness block configured with this machine.

Wipe the workbench and standard block clean and test on the hardness block working surface, and never test on the support surface.

  1. If the indication value is large, in addition to the inspection in item 4 of this section, it should also check whether there is burr on the support surface of the standard hardness block. If there is burr, use oil stone to light it.

3.When testing at different positions of the standard block, the hardness block should be dragged close to the work surface, and it is strictly forbidden to take it off the workbench.
4.Adjustment of the indication of the hardness tester:If the above work is performed, the error of the hardness tester is still large, and the front and rear positions of the plate can be adjusted to meet the indication accuracy requirements.

To do this, loosen the two M3 screws on the front and rear of the adjustment plate and move the adjustment plate back and forth.

Note that when moving in the direction of the indicator, the value increases,otherwise the value decreases. After the adjustment is completed,the two M3 screws that have been loosened should be fastened.

  1. If users have other questions, they should contact the manufacturer in time to get the correct solution. Do not disassemble it yourself to prevent unnecessary damage.

Application range

 

Scale

Hardness symbol

Initial test force F0(kgf)

Main test force F1(kgf)

Total test force

F(kgf)

constant

Rockwell hardness range

Application specimen

A

 

HRA

10

50

60

100

20-88HRA

Hard metal and hard alloy

B

HRB

10

90

100

130

20-100HRB

Non-ferrous metals and soft metals

C

HRC

10

140

150

100

20-70HRC

Heat treated structural steel, tool steel

D

HRD

10

90

100

100

40-77HRD

Surface hardened steel, thin steel

F

HRF

10

50

60

130

60-100HRF

Non-ferrous metal

 

G

HRG

10

140

150

130

30-94HRG

Pearlite iron, copper nickel, zinc alloy

 

 

 

 

 

 

 

Standards: GB/T 230.2, ISO 6508-2 and ASTM E18

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