Sinowon Ultrasonic Hardness Tester: Revolutionizing Non-Destructive Hardness Testing for Gear Industry

In the gear manufacturing sector, hardness is a critical indicator of material performance. Traditional methods like Rockwell and Brinell testing often face limitations due to visible indentations, complex operations, or incompatibility with complex workpiece geometries. Sinowon Instruments' ultrasonic hardness meter series (SU-100, SU-300, SU-400), based on Ultrasonic Contact Impedance (UCI) technology, offers a non-destructive, high-precision solution, setting new benchmarks in industrial inspection.

Technical Breakthrough: Non-Destructive Measurement Science

Sinowon's ultrasonic hardness meters utilize the UCI principle, where changes in the sensor rod's resonant frequency reflect material hardness. When a diamond indenter contacts the workpiece under constant pressure, lower hardness increases contact area, raising vibration damping and resonant frequency. Precise frequency measurement enables rapid hardness conversion.

Core Advantages:

• Minimal Indentation: Requires high-magnification microscopy for visibility, preserving gear surfaces.
• All-Directional Testing: Supports horizontal, vertical, and irregular surfaces without compensation, ideal for gear roots and slots.

Applications & Advantages in Gear Manufacturing

• Precision Testing for Critical Areas

• Tooth Surfaces & Roots: Assess uniformity of surface hardening (carburizing, nitriding) to ensure wear resistance and bending strength.
• Weld Heat-Affected Zones (HAZ): Evaluate welding-induced hardness changes to prevent brittle fractures.
• Thin/Welded Gears: Suitable for <5mm thickness, avoiding deformation from traditional methods.

• Production Line Integration

SU-300H with optional MP-1000 electric probe enables magnetic fixation and robotic automation, enabling post-heat-treatment online inspection.

• Multi-Scale Conversion & Data Management
• One-Click Scale Switching: Supports HV, HRC, HB for diverse industry standards.
• Wireless Data Transfer: Stores 1000 datasets, Bluetooth printing, and RS232 output for traceability.

Technical Assurance from Sinowon

• Precision Certification: Validated by China National Institute of Metrology, compliant with ASTM A1038/DIN 50159 (±3% HV, ±1.5% HRC).
• Durability & Service: 2-year warranty, lifetime support, operational in -10°C to 50°C environments.
• User-Friendly Design: 4-inch color screen displays real-time data (max/mean/deviation), operable within 5 minutes.

Conclusion

Sinowon's ultrasonic hardness meters redefine non-destructive testing with precision, efficiency, and smart design, serving gear manufacturers from labs to production lines. Whether for traditional gears or aerospace/automotive components, Sinowon drives innovation for quality and cost efficiency.

Visit www.sinowon.com for product details and technical solutions!