The Digital Universal Hardness Tester is a high precision, easy operation, high- sensitivity metal hardness instrument which combines the Rockwell, Brinell, and Vickers hardness principles widely used in factory workshops.
The Digital Universal Hardness Tester has a large LCD screen and Microchip control system allows for automatically operated hardness testing.
The built-in printer records the main technical data of the entire testing process.
High accuracy avoiding the human operational error, is a mechanical and electrical integration also high-tech and advanced hardness tester.
Digital Universal Hardness Tester – Frequently Asked Questions (FAQ)
1. What is a Universal Hardness Tester and how does it work?
A Universal Hardness Tester is a versatile material testing instrument that combines multiple testing methods—Rockwell, Brinell, and Vickers—into a single machine. It works by applying a controlled force through a specific indenter (diamond cone, diamond pyramid, or carbide ball) into a material’s surface. The digital system then measures the depth or diameter of the indentation to calculate a precise hardness value, which is displayed on the LCD screen.
2. Which hardness scales are supported by this digital model?
This instrument supports a wide range of industry-standard scales, allowing you to switch between different testing requirements seamlessly:
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Rockwell: HRA, HRB, HRC
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Brinell: HBW2.5/31.25, HBW2.5/62.5, HBW2.5/187.5, HBW5/62.5, HBW10/100
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Vickers: HV30, HV100
3. What are the advantages of using a Digital Universal Hardness Tester over single-method testers?
The primary advantage is efficiency and space-saving. Instead of maintaining three separate machines for Rockwell, Brinell, and Vickers tests, one universal unit covers all bases. The digital interface also reduces human error by automating the loading and unloading process, providing high-precision results that are easily recorded via the built-in printer or RS232 interface.
4. Which materials can be tested with this instrument?
The Digital Universal Hardness Tester is designed for a broad spectrum of metallic materials, including:
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Hard Metals: Quenched steel, carborized steels, and hard cast irons.
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Soft/Medium Metals: Mild steels, aluminum alloys (Al-alloys), copper alloys (Cu-alloys), and malleable irons.
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Surface Layers: Suitable for thin layers or coatings using the Vickers or Rockwell Superficial methods.
5. Does this tester comply with international standards like ASTM or ISO?
Yes. This instrument is engineered to meet and exceed global testing standards, ensuring your quality control processes are compliant:
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Rockwell: ISO 6508, ASTM E18
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Brinell: ISO 6506, ASTM E10
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Vickers: ISO 6507, ASTM E92
6. What is the maximum specimen height for testing?
The unit features a generous testing space to accommodate various part sizes. The maximum specimen height is approximately 180mm for Rockwell tests and 135mm for Vickers and Brinell tests, with a throat depth of 140mm.
7. Can I export test data for quality reports?
Absolutely. The unit includes a built-in thermal printer for immediate physical records of test data. For digital integration, it features an RS232 interface, allowing you to transfer data to a computer for advanced analysis or long-term storage in your quality management system.
8. How do I maintain the accuracy of my hardness tester?
To ensure high-precision results, we recommend:
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Regular Calibration: Use the included standard hardness blocks (Rockwell, Brinell, and Vickers) to verify accuracy before each shift.
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Indenter Inspection: Regularly check the diamond and ball indenters for chips or wear.
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Clean Environment: Keep the manual lifting platform and test anvil free of debris to prevent "false" depth readings.