Automatic Brinell Indentation Measurement System
Currently, in the Brinell hardness testing process, a batch of “veterans”—older manual Brinell hardness testers—are still actively serving in the QC labs and workshops of many factories. Despite being in service for over a decade, these machines can still apply the test force accurately, with their core mechanical properties showing no sign of degradation.
However, they have one obvious Achilles’ heel: the reading process is a real headache.
Operators have to hunch over the specimen with a 20x reading microscope, manually aligning the crosshairs with the edges of the indentation to measure its diameter, and then look up the hardness value in a conversion table. When dealing with specimens that have blurry edges or rough surfaces, it requires endless refocusing and remeasuring. It’s so tedious that even a seasoned operator might struggle to get an accurate reading within half a day.
What’s even more frustrating is that:
Poor repeatability: Different operators often get different diameter measurements for the same indentation.
Human error: It’s easy to read the wrong row in the lookup table or make mistakes during manual recording.
Low throughput: Batch testing is painfully slow; measuring just a few dozen samples a day is physically exhausting.
Steep learning curve: It takes a long time for newcomers to get up to speed, which further drags down overall testing efficiency.
So, why not just upgrade to a new automatic-reading Brinell hardness tester? For older machines that are still fully functional, the budget required for a brand-new unit is indeed hard to justify.
This is exactly why Laizhou Laihua developed the Automatic Brinell Indentation Measurement System—a solution tailor-made for this very problem.
The core concept is simple:Keep your existing Brinell hardness tester mainframe intact, and simply upgrade the indentation reading process from manual visual inspection to automatic machine vision measurement.
The system consists of just a few simple components:
| Component | Function |
|---|---|
| Digital Microscope / CCD Camera Unit | Captures indentation images, replacing the traditional 20× reading microscope |
| LED Ring Light | Dimmable illumination to ensure clear imaging on surfaces of various materials |
| Image Processing Software | Automatically identifies indentation edges, calculates diameters and outputs hardness values |
| PC / Tablet Terminal | Displays images, operates software, stores data and generates reports |
Traditional Manual Measurement vs. Automatic Measurement System: What’s the Difference?
| Comparison Item | Traditional 20× Reading Microscope | Automatic Indentation Measurement System |
|---|---|---|
| Measurement Method | Manual edge alignment and diameter measurement by human eyes | CCD imaging with automatic software recognition |
| Time per Measurement | Approximately 1 minute | Within 1 second |
| Operation Requirement | Requires experience; prone to errors for new operators | One-click operation, no professional training required |
| Data Recording | Manual transcription and conversion by looking up tables | Automatically save data and generate reports |
| Repeatability | Operator-dependent with large fluctuations | Consistent results under the same standard |
| Report Output | Handwritten or manually entered into PC | Auto-generate in Word / Excel |
| Hardness Conversion | Look up conversion tables | Automatic software conversion (HB→HRC/HV/HS, etc.) |
How to Use: 3 Steps from Indentation to Report
Step 1: Perform the test normally on your existing hardness tester
Operate your Brinell hardness tester just as you always do—select the test force, apply the load, dwell, and unload. This step remains completely unchanged; use the equipment exactly as before.
Step 2: Align the measurement device with the indentation
Position the CCD camera directly above the specimen’s indentation (for benchtop models, it is fixed on the workbench; for portable ones, simply hold it in your hand to align). Open the software and adjust the light source brightness until the indentation image is displayed clearly on the screen.
Step 3: Click to measure and get automatic results
The software automatically identifies the edge contour of the indentation, calculates the indentation diameter, and outputs the Brinell hardness value. The entire process requires no manual edge judgment and no lookup table conversions. Meanwhile, it automatically saves the indentation images and measurement data, allowing you to export Word or Excel reports with just one click.
It’s really that simple.
Additionally, if your mainframe supports multiple indenter specifications (φ10mm, φ5mm, φ2.5mm), you can switch between the corresponding indenter parameters within the software. One single measurement device is compatible with all specifications.
Brinell hardness testing departments facing the following situations can benefit from Laizhou Laihua’s automatic indentation measurement solution:
1. Enterprises with older Brinell testers but outdated reading methods
The mainframe is still in great shape; it’s just the measurement method that needs an upgrade. This is the most cost-effective retrofit solution available.
2. SMEs with limited budgets that cannot afford a brand-new machine right now
The investment in a measurement system is significantly lower than purchasing a whole new unit, yet the performance improvement is remarkable.
3. QC departments with high-volume testing demands and strict efficiency pressures
Testing speed increases from 2 minutes per point to just 1 second per point, boosting batch testing efficiency by dozens of times.
4. Labs requiring data traceability and report management
Test data is automatically stored and reports are generated instantly, meeting the traceability requirements of quality management systems for testing records.
5. Workshops with high staff turnover and high training costs
One-click measurement means zero learning curve. It doesn’t rely on the experience of veteran operators; new hires can use it right out of the box.
Post time: Oct-12-2026
