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HRS-150 Digital Rockwell hardness tester is a suitable semi-automatic hardness measuring instrument. It can be used to determine the Rockwell hardness of ferrous metals, non-metallic materials and products.
Product overview
The spindle system of HRS-150 Digital Rockwell hardness test adopts the frictionless spindle structure. The application of the initial test force is controlled by the electromagnetic brake, thus improving the accuracy of the initial test force. The application, maintenance and removal of the total test force realizes automation and eliminates the errors caused by manual operation. The automatic digital display of hardness value can completely avoid the reading error of the operator, and the random printer can print out the measured hardness value and data processing results. It is widely used in factories and mines, scientific research units, laboratories of colleges and universities.
Test principle
With a diamond cone head or a steel ball indenter of a certain diameter, it is pressed into the surface of the sample under the action of the initial test force F0 and the main test force F1. Maintain for a certain period of time, remove the main test force, and retain the initial test force. At this time, the depth of entry is h1,The depth of compression under the action of the initial test force is h0, Their difference e(h1-h0) represents the permanent increment of indentation depth. Each entry of 0.002mm is a unit of Rockwell hardness.
Rockwell hardness formula:
HRA, C=100-(e/0.002)
HRB=130-(e/0.002)
Main functional characteristics
The spindle system adopts the friction-free spindle structure, and the application of the initial test force is controlled by the electromagnetic brake, thus improving the accuracy of the initial test force.
The application, maintenance and removal of the total test force realize automation and eliminate the errors caused by manual operation.
The automatic digital display of hardness value can completely avoid the operator's reading error.
The random printer can print out the measured hardness value and data processing results.
Application range
It can be used to determine the Rockwell hardness of ferrous metals, non-metallic materials and products. The spindle system adopts friction-free spindle structure.
Technical specifications and parameters
Measurement range:20-88HRA,20-100HRB,20-70HRC
Test force: 588.4, 980.7, 1471 N (60, 100, 150kgf)
The allowed maximum height of the specimen: 170 mm
Distance from the center of the head to the wall of the machine: 130 mm
Hardness resolution: 0.1 HR
Main accessories
Big flat work-stage: 1pc of Steel cone indenter
Small flat work-stage: 1pc of 1/16" ball indenter
Big V type work-stage: 1 set of standard Rockwell hardness block (5pcs)
Pinter: 1 set
Rockwell hardness scale, indenter, test force and application range
Scale |
Indenter |
Initial test force(N) |
Total test force(N) |
Application range |
A |
Diamond Coning angle 120° Radius of the top sphere 0.2mm |
98 |
588 |
Carbide, cemented steel |
D |
980 |
Thin steel, surface quenched layer |
||
C |
1471 |
Quenched steel, quenched and tempered steel, hard cast iron |
||
F |
Steel ball diameter 1.588mm (1/16 inch) |
588 |
Annealed copper alloy, thin soft steel |
|
B |
980 |
Soft steel, aluminum alloy, copper alloy, malleable cast iron |
||
G |
1471 |
Pearlitic iron, copper, nickel, zinc, nickel alloy, |
||
H |
Steel ball diameter 3.175mm (1/8 inch) |
588 |
|
|
E |
980 |
|
||
K |
1471 |
|
1.Spinning roller 2.Safety cover 3. Test work-stage 4.Indenter 5. Upper cover fastening screw 6.Upper cover
7. Rear cover fastening screw 8.Rear cover 9.Operation panel 10. Indenter stop screw 11. Variable load wheel
12.Power switch 13.RS232 interface 14.Power plug 15.Printer
Installation and adjustment:
After the hardness tester is put in place, remove the fixing screws of the body first, and then spin out 4 upper cover screws(5),Press the upper cover with a hook, and then take out the upper cover (6),Remove the rubber band from the measuring lever(1) in the body,And the tie of the tail of the main lever(2), Cover the upper cover in time to prevent dust from entering the house. Turn the wheel(1) counterclockwise, take out the gasket on the lifting screw, pull out its uppermost protective cover from the lifting rod,Remove the other 2 protective sets, wipe out the antirust oil on the lifting screw, and apply a small amount of thin oil to lubricate. Then install the protective cover and put it on the work stage (3). Finally, open the rear cover(8),Remove the white yarn belt of the fixed movable parts and the rubber gasket under the weight and connecting rod parts.
Transformation of test force
Select the scale according to the hardness test requirements of the specimen (Figure 1),and determine the total test force according to the scale. Turn the changing wheel(11) to change the main test force.
Standards: BSEN 6508, ISO 6508, ASTM E18, GB/T230
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HR-150A ROCKWELL HARDNESS TESTER
Specifications
Measuring range: 20-88HRA, 20-100HRB, 20-70HRC
Test force: 588.4, 980.7, 1471N (60, 100, 150kgf)
Max. height of test piece: 170mm
Depth of throat: 135mm
Min. scale value: 0.5HR
Dimensions: 466 x 238 x 630mm
Weight: approx. 65kg
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
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.
HRD-150 MOTOR-DRIVEN ROCKWELL HARDNESS TESTER
HRD-150 electric Rockwell hardness tester is automatic to zero, the main test force is automatically loaded and unloaded, the lever is loaded, and the test process is automated.
This hardness tester is a practical semi-automatic hardness measuring instrument. In 1989, it won the National Quality Silver Award. It can be used to determine the Rockwell hardness values of ferrous metals, non-ferrous metals, non-metallic materials and products, and is widely used in factories, mines, research institutes and universities and colleges.
HRD-150H HEIGHTENED MOTOR-DRIVEN ROCKWELL HARDNESS TESTER
he surface of the tested part shall be smooth and clean, and shall not be contaminated with dirt, scale, back pit and significant processing
traces, the support surface of the test piece and the test bench should be clean and kept in good closeness. The thickness of the test piece is greater than about 10 times the depth of the indentation.
According to the shape and size of the test piece, choose the appropriate test bench. If the test piece is shaped, it can be designed and manufactured according to the specific geometry. (The company has a variety of test benches, users can choose as needed),so that the hardness test has an accurate indication.
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Standard Blocks
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