Gears Measuring with Sinowon's Ultrasonic Hardness Tester in Automotive Industry

1. What is an ultrasonic hardness tester?

In 1961, Dr. Claus Kleesattel (Claus Kleesattel) invented UCI. Ultrasonic Contact Impedance - Ultrasonic Contact Impedance method is used for rapid comparative measurement of the hardness of metal materials. Ultrasonic hardness tester consists of handheld PDA and CUI measuring probe, the two are connected by cables. The front diamond indenter of the hardness tester touchs measured parts, under the uniform contact pressure, the resonance frequency of the probe head changes with the hardness. To achieve the purpose of measuring hardness through the change of frequency.

2. Ultrasonic Hardness Tester Principle

Ultrasonic contact impedance method is a non-direct measurement of the indentation of the dynamic indentation method. A specific indenter (e.g., a positive tetragonal diamond indenter) is mounted on the end of the indenter, and the vibrating rod of the indenter is stimulated to make longitudinal ultrasonic vibrations. When the indenter is pressed into the test surface with a certain test force, the longitudinal vibration of the vibrating rod is impeded and the resonance frequency changes. The amount of change is a function of the surface area of the indentation and the effective modulus of elasticity of the system, and the hardness value is obtained from the amount of frequency change.

3. Ultrasonic Hardness Tester Application Scene

Ultrasonic hardness tester can measure the workpiece parts including gear root stamping parts; work mold, thin plate; surface hardening of teeth and gear measurement; taper part hardness measurement; shaft and thin-walled pipeline, container measurement; wheels, turbine rotor hardness measurement; hardness measurement of the cutter of the drill bit; welding parts;

4. Sinonwon Precision Ultrasonic Hardness Tester Advantages

Intelligent: display terminal operating systemization, support for multi-language, intelligent recognition of different probes, support for the storage of calibration data that call for a variety of materials.

Motorization: automatic probe: motor loading, reducing measurement errors. Especially the development of small test force motorized probe is the future development trend.

Multi-scalar: support for multi-scalar direct measurement: support for Richter hardness probe for HL scale direct measurement; support for Shore hardness probe for HS scale direct measurement.

Data: Support RS232, USB, Bluetooth and other data transmission functions, SPC analysis of measurement results.

The advantages of Sinowon Precision Ultrasonic Hardness Tester over other types of hardness testers due to the small applied load and short time are: no damage to the workpiece, portable, easy to operate, fast measurement, and can be used for the on-site full inspection of large-volume products. It is suitable for large-sized workpieces, as well as for the hardness test of various shaped workpieces, irregular parts, small parts, thin parts, nitrided parts, and even extremely thin surface plating layer.