20khz high amplitude ultrasonic impact treatment stress relief on weld
Parameter:
What's is ultrasonic impact treatment
Ultrasonic impact treatment is a method to efficiently remove the residual tensile stress on the surface of the workpiece or the weld zone, and form a compressive stress on the surface of the workpiece. Can significantly improve the fatigue life and fatigue strength of welded joints. After welding, the toe area is processed to make the transition smooth, thereby reducing the stress concentration caused by the remaining height and eliminating defects on the surface of the toe; at the same time, a large compressive plastic deformation is generated at the toe, which results in residual compressive stress and adjusts the welding Residual stress field, and strengthen and harden the toe area. The above factors effectively improve the fatigue performance of welded joints.Our company'sultrasonic impact equipment control power box adopts modular design and is manufactured by applying advanced production technology based on the use of high-quality materials and components. The control power supply has a frequency phase-locked tracking system, and it is the first to introduce a fully digital-based control power supply. It realizes automatic frequency scanning, detection, tracking, automatic fault detection and protection, preset control of power adjustment and impedance adjustment, man-machine dialogue, software upgrade, etc. The operation is very convenient and reliable.A large amount of experimental data shows that ultrasonic impact can increase the fatigue strength of steel welded joints by 60 ~ 180% and extend the fatigue life by 10 ~ 135 times; increase the fatigue strength of aluminum and titanium non-ferrous metal welded joints by 26 ~ 48% and extend the fatigue life 5 ~ 45 times.Ultrasonic impact gun products have also formed a series of products, which can be widely used in ships, petrochemicals, aviation, railways, wind turbines, steel or composite bridges, heavy lifting machinery and other fields, suitable for post-weld processing of welding structures of various materials To achieve the purpose of extending the fatigue life of the welded structure and improving its fatigue strength, and can eliminate the welding process stress and residual stress to a certain extent, it is especially suitable for post-weld processing of ordinary joints, load-bearing joints and welded joints of dissimilar materials.
Application:
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Inscreasing productivity and quality
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Cost reductions
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Improving fatigue life
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Treatment of complex geometry parts
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Process control and repeatability
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Low roughness (see image above)
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Shorter treatment cycle time
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Reducing consumption of beads, energy and compressed air
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Integration in the production line (lean manufacturing)
Impact gun application areas: industries that have strict requirements on the stability and strength of the weld. Such as: bridges, electric power; shipbuilding; pressure vessel, steel structure and other metal welding industries.
