How to eliminate residual internal stress caused by welding has always been a common problem in the industry. Due to the presence of residual internal stress, the product may warp, deform, or even crack at the location of residual stress during the process of releasing internal stress. In addition, it also has a certain impact on structural stiffness, component stability, static load strength, fatigue strength, and component brittleness. The common solution to eliminate stress is to perform thermal aging treatment, but there are also many problems, such as the size of the workpiece to be processed exceeding the processing range of the aging furnace, the fast heating rate, and the difficulty in controlling the ups and downs during the aging process. And the cost of thermal aging is high, and transportation is also troublesome.

　　

　　Welding stress relief equipmentThe application of ultrasonic shock technology has solved many problems in thermal aging, allowing for on-site aging treatment of welds without changing the site. And it greatly reduces the cost of aging and increases the uncertainty of aging effects.

　　

The ultrasonic impact technology of welding stress relief equipment uses high-power energy to push the impact head to impact the metal surface at a frequency of about 20000 times per second. High frequency, efficient, and concentrated energy causes significant compressive plastic deformation on the metal surface; At the same time, ultrasonic shock changed the original stress field and generated beneficial compressive stress; Under high-energy impact, the surface temperature of the metal rapidly increases and rapidly cools, thereby changing the surface metal structure of the affected area, strengthening the impact site, and eliminating or homogenizing stress.

　　

1. The stress relief rate of workpiece welding produces ideal compressive stress, making it an ideal equipment for eliminating welding residual stress both domestically and internationally.

　　

2. The stable frequency and constant amplitude control circuit eliminates the on-site danger of ordinary ultrasonic stress relief equipment.

　　

3. Welding fatigue strength can be increased by 50% -120%, and fatigue life can be extended by 5-100 times.

　　

4. Not limited by the shape, structure, material, weight, plate thickness, or location of the workpiece.

　　

5. Used to eliminate welding residual stress and can replace aging methods such as heat treatment.

　　

6. The professional design of the impact gun eliminates the problems of aging traditional equipment and heavy operation of equipment in the same industry that cannot be operated on site, reducing the workload of on-site personnel.

　　

7. For large structural components, on-site weld treatment, ultra-high and low weld treatment, and weld repair have better stress relief effects.

　　

8. Economical, practical, environmentally friendly, energy-saving, safe, and pollution-free.

　　

Ultrasonic shock technology for welding stress relief equipment is currently effective. Ultrasonic shock treatment of welds can not only eliminate residual internal stress, but also extend the fatigue life and strength of the welding area, reduce the possibility of stress corrosion cracking, improve brittleness resistance, and enhance material strength.