Overview
The Webster Hardness Tester (model W-BB75b) is a Portable instrument for quickly testing the hardness of aluminum alloys, especially for the inspection of the mechanical properties of aluminum alloy profiles at the production site. The instrument is easy to operate, can be read on one card, and is highly efficient and reliable. The W-BB75b model is designed for copper materials and can measure Film thickness 0.4-8 mm and inner diameter greater than 6mm workpieces.
Features
1. Wechsler hardness test, easy and convenient, Measurement verification.
2. Through anodic oxidation treatment, wear-resistant and rust-free, comfortable feel.
3. Detect a variety of metals, hardness testing has a wide range of applications.
4. Adopting a mechanical design and equipped with a compression spring device, it is not easy to damage.
5. High toughness surface window glass, Impact resistance is not easy to damage.
6. Clear scale and accurate measurement.
7. Easy to use, Handheld design, easy to carry.
8. Conversion is convenient, through the conversion table can get Brinell, Rockwell, Vickers, Wechsler and other hardness values.
Principle
Webster Hardness Tester works on the mechanical principle of Cedulum. When in use, the instrument is stuck on the workpiece, and the pressing pin is pressed into the surface of the material under test under the action of spring force to form Cedulum. By measuring Cedulum depth or related dimensions, the mechanical structure inside the instrument converts the amount of displacement into a hardness value and displays it directly on the dial, enabling fast, non-destructive hardness testing.
Applications
Aluminum alloy profiles, pipes, plates, aluminum parts and Miscellaneous softer metal hardness testing. Especially suitable for the production site, sales site or construction site of batches of Aluminum profile and doors, windows and curtain walls for rapid, non-destructive piece by piece qualified inspection, used to judge whether the Aluminum profile has aging, aging is qualified, distinguish different grades of aluminum and different aging status.
Standards
American Institute of Materials Standard ASTM B647-10 "Standard Test Method for Testing Aluminum Alloy Cellular Hardness Using Webster Hardness Tester", Nonferrous Metals Industry Standard YS/T420-2000 "Wechsler Hardness Test Method for Aluminum Alloys", National Measurement verification code JJG944-1999 "Metal Webster Hardness Tester (Trial) ", National Measurement verification code JJG944-2013 "Metal Webster Hardness Tester"
Steps
1. Ensure that the size of the workpiece to be tested meets the requirements (Film thickness 0.4-8 mm, inner diameter > 6mm).
2. Clean the tested surface.
3. Align the hardness gauge opening and card it on the workpiece to be tested.
4. Apply pressure until the needle is fully inserted, maintaining stability.
5. Read the Wechsler hardness value directly from the dial.
Notice
Before use, please confirm that the material under test is the appropriate material (e.g. copper), and the workpiece size is within the specified range of the instrument.
* When measuring, ensure that the measured surface is flat, clean, and free of oil or oxidation.
* The caliper should be aligned with the position, and the pressure should be smooth and vertical to avoid inaccurate measurement or damage to the pressure needle due to tilt.
* Regularly calibrate the instrument with standard hardness blocks to ensure measurement accuracy.
The instrument is a precision mechanical device and should be avoided from severe impact or falling.
When not in use for a long time, it is recommended to store it properly after cleaning.
When reading, the line of sight should be perpendicular to the dial to reduce parallax.
* If you need to convert to Miscellaneous hardness values (such as Brinell, Rockwell, etc.), please refer to the corresponding conversion table.
