Portable Ultrasonic Hardness Tester
How to handle hardness testing for finished and high-value components?
For parts that are fully machined and awaiting delivery, no visible marks can be left after testing. Traditional benchtop hardness testers simply cannot meet this requirement.
What about hardness testing for large components and in-service equipment?
For items like pressure vessels, steam turbines, large molds, and installed mechanical parts, traditional benchtop testers are completely inadequate. These workpieces are too heavy to move, impossible to dismantle, and cannot be cut for sampling.
These are the exact headaches our customers face during hardness testing. When you can’t test directly and can’t cut samples, what’s the solution?
Enter the Portable Ultrasonic Hardness Tester!
Using the UCI (Ultrasonic Contact Impedance) method, this is a precision non-destructive testing (NDT) device. It features a diamond Vickers indenter and calculates hardness based on ultrasonic resonance frequency changes. The resulting indentation is microscopic, making it practically non-destructive.
Key Highlights:
1.Micro-indentation, Near-Zero Damage: After testing precision-finished parts, coatings, or hardened layers, it leaves almost no visible marks. It won’t affect future use, so you can confidently spot-check high-value and aerospace precision components.
2.Accurate Measurement in Confined Areas and Curved Surfaces
For features like gear roots, bearing raceways, narrow mold cavities, curved surfaces, and inner walls of small holes, traditional Leeb hardness testers often fail to provide stable measurements. The UCI probe, however, allows for precise, targeted testing in these challenging locations.
3.Dedicated Solution for Thin Hardened Layers
Ideal for testing carburized, nitrided, induction-quenched, hard chrome-plated, and thermally sprayed layers. It prevents the risk of impact penetration through thin layers, ensuring stable and accurate readings of the true surface hardness.
4.Automatic Multi-Scale Conversion
Automatically converts between HV (Vickers), HRC (Rockwell), HB (Brinell), and HRB (Rockwell) scales, allowing a single device to fulfill various drawing specifications and testing standards.
5.In-Situ Testing Without Dismantling or Sampling
Ideal for large castings, rolling mills, pipeline welds, and fully assembled machinery. Eliminates the need for disassembly or destructive sampling. Enables real-time quality control in workshops, construction sites, and warehouses, significantly reducing time and operational costs.
6.Data Storage & Export for Quality Traceability
Features built-in memory to record test IDs and hardness data with a single click. Supports USB report export to fully comply with IQC incoming inspections, in-process patrol inspections, and third-party testing report archiving requirements.
Although ultrasonic hardness testers effectively solve the testing challenges for large workpieces and finished components, please note the following important considerations when purchasing or using this equipment:
1. Surface Testing Only, Not Core Hardness
The UCI indentation depth ranges only from tens to hundreds of micrometers, representing surface hardness. For evaluating core mechanical properties or hardenability, traditional benchtop testers or metallographic sampling are still required.
2. Material-Specific Calibration is Required
Frequency shift is influenced by the material’s elastic modulus. Because the elastic moduli of steel, aluminum alloys, titanium alloys, and high-alloy steels vary, calibration must be performed using standard test blocks with matching or similar elastic moduli. Failure to recalibrate when switching materials will result in untrustworthy data.
3. Surface Condition Directly Affects Data Quality
The tested surface must be flat, free of oil and contaminants, and exhibit a metallic luster. Specific surface roughness requirements apply to different probes. Testing on rough surfaces will systematically yield lower hardness values.
4. Recommended Alternative for Rough Surfaces
For large, rough castings or large-area raw surfaces, pairing or prioritizing a Leeb hardness tester is recommended.
Facing hardness testing challenges? Welcome to consult Laizhou Laihua for technical parameters and comprehensive testing solutions.
Post time: Nov-12-2026
