20Khz High-frequency Ultrasonic Welding Stress Relief Gun
Description:
The 20Khz high-frequency ultrasonic welding stress relief gun, also
known as the ultrasonic aging impact gun, is an industrial
specialized handheld metal strengthening stress relief equipment.
Its core is used to eliminate residual tensile stress and improve
fatigue life in welds and metal components.
Principle:
1. The power output is 20kHz high-frequency AC power, which is sent
to the piezoelectric transducer to convert electrical energy into
micrometer level longitudinal mechanical vibration;
2. Amplify the amplitude of the amplitude rod to 40-100 μ m and
drive the front tungsten steel impact needle;
3. The impact needle repeatedly impacts the metal surface at a high
frequency of 20000 times per second;
4. Compressive plastic deformation occurs on the metal surface: the
residual tensile stress from welding is converted into beneficial
compressive stress, while refining the surface grain and smoothing
the transition arc of the weld toe.
Parameters:
| Item No | FSA-2010-H |
| Frequency | 20Khz |
| Max Power | 1500w |
| Output Amplitude | 30-100μm |
| Voltage | AC 220V±10%, 50HZ |
| Conversion Efficiency | 90% |
| Processing Speed | ≥500mm/min |
| Materials of Impact Head | Specially tungsten steel |
| Size of Impact Head | Φ3Φ5Φ8 or Customized |
| Common Impact Heads | four pins, single pin, or customized |
Advantages :
1. Eliminate welding stress: Remove harmful tensile stress from the
weld seam, suppress post weld deformation and cracking, and achieve
a stress relief rate of over 30%;
2. Significantly improve fatigue life: the fatigue strength of
steel joints is increased by 60% -180%, and the life is extended by
5-10 times; Aluminum/titanium alloy increases by 25% -50%;
3. Repair weld toe defects: Smooth the weld toe, eliminate
undercutting, micro pores, and micro cracks, and reduce stress
concentration;
4. Surface strengthening: The surface hardness is increased,
forming a compressive stress layer of ≥ 1mm, which is resistant to
corrosion and fatigue crack propagation;
5. Dimensional stability: reduces long-term aging deformation of
components, replaces some heat treatment aging, and does not
require a high-temperature furnace.
20Khz High-frequency Ultrasonic Welding Stress Relief Gun
