Basic Principle of Ultrasonic Welding Stress Relief Equipment
The basic principle of ultrasonic welding stress relief equipment is to use high-power ultrasonic waves to propel impact tools that strike the surface of metal objects at a frequency of over 20,000 times per second. Due to the high energy of the ultrasonic waves and focusing, it induces significant compressive plastic deformation on the metal surface; at the same time, the ultrasonic welding stress relief equipment alters the original stress field, generating a certain amount of compressive stress, and strengthens the impacted area.
The ultrasonic welding stress relief equipment significantly enhances the fatigue strength of metal weld joints and structures, dramatically extending their fatigue life; it eliminates residual tensile stress and induces compressive stress in the impacted areas, thereby improving the load-bearing capacity of the workpiece. It effectively improves the geometric shape of weld toes, drastically reducing the stress concentration coefficient at the weld toes, outperforming TIG welding processes. It removes surface micro-cracks and welding defects at the weld toes, suppressing early crack initiation; it strengthens the surface of metal parts, enhancing surface quality and service life. The equipment is energy-efficient, pollution-free, easy to use, and is not restricted by the shape of the workpiece, the site, or the environment, offering remarkable treatment effects.
Ultrasonic Stress Relieving Machine Applications
Ultrasonic impact products have also been developed into a series, widely applicable in fields such as shipbuilding, petrochemicals, railways, wind turbine generators, steel or composite material bridges, heavy lifting equipment, etc. They are suitable for post-weld treatment of material welding structures to extend the fatigue life of the焊接 structures and enhance their fatigue strength. Additionally, they can significantly reduce stresses and residual stresses during the welding process, particularly suitable for post-weld treatment of structures like general joints, load-bearing joints, and dissimilar material welding joints.
Ultrasonic impact stress-relieving equipment enhances the fatigue strength of metal weld joints and structures, significantly extending their fatigue life; reduces residual tensile stress, creating compressive stress in the impacted areas to improve the workpiece's load-bearing capacity; effectively improves the geometric shape of weld toes, lowering the stress concentration factor at the toes, with good results; reduces surface cracks and welding defects at the weld toes, inhibiting early crack initiation; strengthens the surface of metal parts, improving surface quality and service life. The equipment is efficient, energy-saving, pollution-free, and easy to use, without restrictions on workpiece shape, site, or environment.
Ultrasonic Stress Relief Equipment Processing Effect
Extensive experimental data shows that ultrasonic impact can increase the fatigue strength of steel welding joints by 60~180%, extending their fatigue life by 10~13 years; and can enhance the fatigue strength of aluminum and titanium alloy welding joints by 26~48%, extending their fatigue life by 5~4 years.
Function of ultrasonic impact stress relief equipment:
1. The stress relief rate of the workpiece welding can achieve ideal effects, making it an ideal equipment for reducing residual welding stresses at present.
2. Time-saving tool holder, made of high-quality steel, with a compact structure and durability. Equipped with an adjustable rod protector to extend the service life of the adjustable rod.
3. Stabilized frequency and constant amplitude control circuitry, with overheat and overload protection capabilities, eliminating the dangers associated with on-site operations.
4. Enhances the fatigue strength of weld joints, extending their fatigue life.
5. Unlimited by the shape, structure, material, weight, thickness of the sheet metal, or location of the workpiece.
6. Can be used as an alternative to heat treatment and other aging methods for reducing welding residual stresses.
7. Superior design reduces the cumbersome operation of traditional time-sensitive equipment and industry-standard machinery, addressing the challenge of on-site inaccessibility, and lessens the labor workload for on-site personnel.
8. Field treatment of welds on large structural components, superior weld treatment, and stress reduction effects on repaired welds are more pronounced.
9. Wide frequency tracking range to effectively track frequency changes caused by external factors.
10. Utilizing superior ultrasonic power conversion devices for strong output.
11. Economical, practical, eco-friendly, energy-saving, and pollution-free.
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