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UIT20
Rps-sonic
UIT20
What's is ultrasonic impact treatment
Ultrasonic impact treatment (UIT) is a relatively novel technique applied to the toe of welded joints to improve the fatigue life by changing the weld geometry and the residual stress state. In this study, the stress relaxation due to ultrasonic impact treatment is investigated on a six pass welded high strength quenched and tempered steel section. Stress measurements in two orthogonal directions were conducted by energy dispersive synchrotron X-ray diffraction. Results show that the application of only ultrasound to a welded component re-distributes the residual stresses more uniformly, while mechanical impacts in combination with ultrasound is an effective way to release the residual stresses. After welding, diffraction peak broadening due to the lattice distortion, characterised by the full width at half maximum (FWHM), is observed in the region of the weld toes. Ultrasonic impact treatment reduces the FWHM at these locations.
Parameter:
| Model No. | UIT20 | |
| Ultrasonic Frequency | 20Khz | |
| Maximum Output | 1000 Watt | |
| Amplitude | 35um | |
| Power Supply | 220V / 50-60 Hz | |
| Ultrasonic Generator | Size | 250(W) x 310(L) x 135(H) mm |
| Weight | 5 Kg | |
| Feature | Ultrasonic Amplitude Adjustable | |
1. Set-up: The workpiece, which may be a metal component or structure, is prepared for the ultrasonic stress relief process. This may involve cleaning the surface, ensuring proper fixturing, and determining the appropriate parameters for the specific material and application.
2. Ultrasonic Vibration Application: A specialized ultrasonic stress relief equipment is used to apply high-frequency vibrations to the workpiece. The vibrations are typically in the range of 20 kHz to 100 kHz and are applied using an ultrasonic transducer. The transducer generates mechanical vibrations that are transmitted to the workpiece through a contact medium,such as a tool or horn.
3. Vibration Distribution: The ultrasonic vibrations are directed to specific areas of the workpiece where residual stresses are concentrated. The vibrations penetrate the material, causing microstructural changes and redistributing the stress patterns.The high-frequency vibrations induce plastic deformation in the material, promoting stress relaxation.
4. Stress Relief: The ultrasonic vibrations help to dislodge and rearrange dislocations in the material's microstructure. This
process leads to the reduction of residual stresses within the workpiece. The redistributed stresses result in a more uniform stress distribution, which can improve the material's fatigue resistance, dimensional stability, and overall structural integrity.
5. Process Optimization: The parameters of the ultrasonic stress relief process, such as vibration frequency, amplitude, and duration, may be adjusted to optimize the stress relief effect. The specific parameters depend on factors such as the material type, thickness, and desired stress relief outcome..
Application:
Aluminium (including sensitized Aluminium)
Bronze
Cobalt alloys
Nickel alloys
Steels
Carbon steel
Stainless steel
High-strength low-alloy steel
Manganese steel
Titanium
What's is ultrasonic impact treatment
Ultrasonic impact treatment (UIT) is a relatively novel technique applied to the toe of welded joints to improve the fatigue life by changing the weld geometry and the residual stress state. In this study, the stress relaxation due to ultrasonic impact treatment is investigated on a six pass welded high strength quenched and tempered steel section. Stress measurements in two orthogonal directions were conducted by energy dispersive synchrotron X-ray diffraction. Results show that the application of only ultrasound to a welded component re-distributes the residual stresses more uniformly, while mechanical impacts in combination with ultrasound is an effective way to release the residual stresses. After welding, diffraction peak broadening due to the lattice distortion, characterised by the full width at half maximum (FWHM), is observed in the region of the weld toes. Ultrasonic impact treatment reduces the FWHM at these locations.
Parameter:
| Model No. | UIT20 | |
| Ultrasonic Frequency | 20Khz | |
| Maximum Output | 1000 Watt | |
| Amplitude | 35um | |
| Power Supply | 220V / 50-60 Hz | |
| Ultrasonic Generator | Size | 250(W) x 310(L) x 135(H) mm |
| Weight | 5 Kg | |
| Feature | Ultrasonic Amplitude Adjustable | |
1. Set-up: The workpiece, which may be a metal component or structure, is prepared for the ultrasonic stress relief process. This may involve cleaning the surface, ensuring proper fixturing, and determining the appropriate parameters for the specific material and application.
2. Ultrasonic Vibration Application: A specialized ultrasonic stress relief equipment is used to apply high-frequency vibrations to the workpiece. The vibrations are typically in the range of 20 kHz to 100 kHz and are applied using an ultrasonic transducer. The transducer generates mechanical vibrations that are transmitted to the workpiece through a contact medium,such as a tool or horn.
3. Vibration Distribution: The ultrasonic vibrations are directed to specific areas of the workpiece where residual stresses are concentrated. The vibrations penetrate the material, causing microstructural changes and redistributing the stress patterns.The high-frequency vibrations induce plastic deformation in the material, promoting stress relaxation.
4. Stress Relief: The ultrasonic vibrations help to dislodge and rearrange dislocations in the material's microstructure. This
process leads to the reduction of residual stresses within the workpiece. The redistributed stresses result in a more uniform stress distribution, which can improve the material's fatigue resistance, dimensional stability, and overall structural integrity.
5. Process Optimization: The parameters of the ultrasonic stress relief process, such as vibration frequency, amplitude, and duration, may be adjusted to optimize the stress relief effect. The specific parameters depend on factors such as the material type, thickness, and desired stress relief outcome..
Application:
Aluminium (including sensitized Aluminium)
Bronze
Cobalt alloys
Nickel alloys
Steels
Carbon steel
Stainless steel
High-strength low-alloy steel
Manganese steel
Titanium
