Standard: ASTM E10, ISO 6508-2
Rockwell Hardness Tester, Touch Screen
A Rockwell Hardness Tester is a device used to determine the material hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a preload. Provides a numerical value indicative of the material's resistance to indentation or deformation. There are different scales within the Rockwell hardness test, each suited for different materials and hardness ranges. The tester applies a known force to an indenter, and the depth of penetration is measured and converted into a hardness value.
The Rockwell Hardness Tester can determine the hardness of materials such as quenched, tempered, and annealed metals, including alloys like hard alloy steel, aluminum alloy, copper alloy, and bearing steel. The Rockwell Hardness Test Method is widely used in manufacturing, quality control, and materials testing to ensure the consistency and quality of materials.
Features of Rockwell Hardness Tester
- Touch Screen Interface: Many modern Rockwell hardness testers feature a user-friendly touch screen interface, allowing for easy operation and navigation of settings and results.
- Multiple Hardness Scales: Rockwell hardness testers typically offer a range of scales to accommodate different materials and hardness levels. Common scales include Rockwell A, B, C, and others.
- Automatic Data Logging: Equipped with automatic data logging capabilities, enabling the storage and retrieval of hardness measurements for later analysis and documentation.
- Motorized Loading and Unloading: Motorized loading and unloading systems can enhance efficiency and accuracy by ensuring consistent application of the testing force.
- Integrated Software: Models come with integrated software for data analysis, reporting, and connectivity with other devices or systems.
Technical Specifications
| Model Number |
TT 6004 X / 005 |
| Initial Test Force |
10kgf (98.07N) |
| Measuring Range |
20-88HRA, 20-100HRBW, 20-70HRC |
| Indenter Specifications |
Diamond Rockwell, Ø 1.588mm Ball Indenter |
| Testing Force |
60 kgf (588.4N), 100 kgf (980.7N), 150kgf (1471N) |
| Max. Height of Specimen |
210 mm |
Distance of center of indenter
to machine wall |
165 mm |
| Hardness Resolution |
0.1 HR |
| Indication of Hardness Value |
Digital Display with Large Touch Screen |
| Dimensions |
220(L) x 510(W) x 694(H) mm |
| Net Weight |
98 kg |
| Power Supply |
220~240 V, 100 W, 0.2 A, 1 Ph, 50/60 Hz, 0.13 Hp |
Unit Consists Of:
| Model Number |
Parts Description |
| TT 6004 X / 005 – P 001 |
Ø1.5875 mm Steel ball |
| TT 6004 X / 005 – P 002 |
Ø1.5875 mm Steel Ball Indenter |
| TT 6004 X / 005 – P 003 |
Small Flat Test Bench |
| TT 6004 X / 005 – P 004 |
Large Flat Test Bench |
| TT 6004 X / 005 – P 005 |
V-Shaped Test Bench |
| TT 6004 X / 005 – P 006 |
Standard hardness block |
| TT 6004 X / 005 – P 007 |
Power Cable |
| TT 6004 X / 005 – P 008 |
Screwdriver |
Standards
- ASTM E10: Outlines the procedure for conducting Rockwell hardness tests on metallic materials. It provides guidelines for selecting the appropriate Rockwell scale, applying the test force, measuring the depth of penetration, and calculating the Rockwell hardness number. ASTM E10 covers a wide range of metallic materials and is widely recognized and utilized in the United States and many other countries.
- ISO 6508-2: Procedures and requirements for conducting Rockwell hardness tests on metallic materials, ensuring consistency and compatibility of hardness test results across different countries and industries. It aligns with ASTM E10 in terms of methodology and terminology, allowing for harmonization of Rockwell hardness testing practices on a global scale.
Test Procedure of Rockwell Hardness Tester
- Preparation:
- Ensure the Rockwell hardness tester is properly calibrated according to the manufacturer's instructions.
- Select the appropriate Rockwell scale based on the material and hardness range being tested.
- Choose the appropriate indenter and test force for the selected scale.
- Sample Preparation:
- Prepare the surface of the sample by grinding or polishing to remove any irregularities or surface contaminants.
- Ensure the sample surface is clean and free from any debris or oil that could affect the test results.
- Test Setup:
- Place the sample on the anvil or support table of the Rockwell hardness tester.
- Lower the indenter onto the sample surface using the manual or motorized loading mechanism.
- Apply the initial preload force to ensure proper contact between the indenter and the sample.
- Test Execution:
- Apply the full test force specified for the selected Rockwell scale by activating the tester.
- Maintain the test force for the specified dwell time to allow for sufficient indentation to occur.
- Release the test force and allow the indenter to retract from the sample surface.
- Measurement:
- Measure the depth of penetration (indentation) using the built-in depth-measuring device.
- Record the depth of penetration to the nearest unit specified by the standard (typically in tenths or hundredths of a millimeter).
- Calculation:
- Calculate the Rockwell hardness number using the formula specified for the selected Rockwell scale.
- The hardness number is typically expressed as a combination of a scale letter and a numerical value (e.g., HRC 55).
- Reporting:
- Document the test results, including the Rockwell hardness number, scale used, test force, dwell time, and any relevant details about the sample.
- Ensure the test report complies with any applicable standards or quality control requirements.
- Post-Test:
- Clean the sample and remove any residual indenter marks.
- Review and verify the test results for accuracy and consistency.
- If necessary, perform additional tests or adjustments to ensure the reliability of the hardness measurements.
