Mikrosize Brand offers customer different types of brinell hardness testers
https://mikrosize.com/products/hardness-tester/brinell-hardness-tester/
1. Basic Operating Steps
Using a Brinell hardness tester is like giving a material a “physical exam”; key data can be obtained in just a few simple steps:
- Sample Preparation: Ensure the test surface is flat, clean, and free of oil or oxide layers.
- Parameter Setting: Select the appropriate load (typically 500–3000 kgf) and indenter diameter ( 10 mm steel ball is common) based on the material type.
- Positioning the Indenter: Place the sample on the worktable and turn the handwheel to bring the indenter slowly into contact with the surface.
- Applying the Load: Activate the loading mechanism and maintain the load for 15–30 seconds (materials like cast iron require longer durations).
- Measuring and Reading: Use a microscope to measure the indentation diameter and consult a conversion table to determine the hardness value.
2. Critical Details for Successful Measurement
Don’t let minor errors ruin your test results:
- Environmental Vibration: The equipment must be installed on a stable platform, away from vibration sources like stamping presses.
- Temperature Fluctuations: Recalibration is required if the laboratory temperature varies by more than ±2°C.
- Indentation Spacing: The center-to-center distance between adjacent indentations should be greater than three times the indentation diameter.
- Sample Thickness: Must be at least eight times the indentation depth (generally over 1 mm).
- Data Recording: Record both the load magnitude and the dwell time (e.g., HBW10/3000/20).
3. Flexible Applications in Industrial Settings
The Brinell hardness tester is not just a laboratory tool; it is also used for:
- Incoming Material Inspection: Quickly determining if metal castings meet standards.
- Heat Treatment Monitoring: Verifying the effectiveness of quenching or annealing processes through hardness changes.
- Product R&D: Comparing the mechanical properties of different alloy formulations.
- Equipment Maintenance: Assessing the wear levels of gears and bearings after long-term use.
- Quality Traceability: Creating material hardness records to facilitate future analysis.
