Titanium board appearance inspection standard, do you know?

Ultrasonic impact technology is an efficient way to eliminate harmful residual tensile stress on the surface of the component or the weld area and introduce beneficial compressive stress. Ultrasonic impact equipment uses high-power energy to push the impact head to impact the surface of metal objects at a frequency of about 20,000 times per second. The high-frequency, high-efficiency and high-focus energy causes large compression and plastic deformation of the metal surface; at the same time, the ultrasonic impact changes The original stress field generates beneficial compressive stress; the metal surface temperature rises rapidly and cools rapidly under high-energy impact, which changes the surface metal structure of the affected area and strengthens the impact site.

In the field of high-energy ultrasound (HPU), ultrasonic impact technology has become a promising research direction, and its application range has been extended to various materials, components, and welding units. So far, the ultrasonic impact technology has been used in railways, marine engineering, automobiles, armored vehicles, heavy construction machinery, mechanical parts, aircraft, bridges, rolling stock, and rolling stock in Russia, Ukraine, France, Japan, Norway, Sweden, Canada, and the United States. , Petroleum pipelines, chemical machinery equipment and many other fields have applications.

Ultrasonic impact is the use of high-power ultrasound to push the impact tool to impact the surface of a metal object at a frequency of more than 20,000 times per second. Due to the high frequency, high efficiency and large energy of the ultrasound, the metal surface produces greater piezoplastic deformation; At the same time, the ultrasonic shock wave changes the original stress field and produces a certain value of compressive stress; the ultrasonic shock wave can be strengthened. The ultrasonic drive power supply is connected with the ultrasonic transducer arranged in the shell through a cable, the vibration output end of the transducer is connected with the horn, and the end of the horn is equipped with an impact needle. The ultrasonic drive power converts the mains electricity into high frequency and high voltage alternating current, which is output to the ultrasonic transducer. Then the ultrasonic transducer converts the input electrical energy into mechanical energy, that is, ultrasonic. Its manifestation is that the transducer makes a longitudinal reciprocating telescopic motion; the frequency of the telescopic motion is equal to the frequency of the AC current of the driving power source, and the displacement of the telescopic motion is more than ten. About micrometers. The role of the horn is to amplify the output amplitude of the transducer to more than 100 microns, and on the other hand to apply an impact force to the impact needle to push the impact needle forward at high speed. After the impact pin impacts the workpiece, the energy is transferred to the weld to achieve the effect of eliminating internal stress. The impact head rebounds after being reacted by the workpiece, and when it hits the high-frequency vibrating horn, it is excited again and hits the weld at high speed again. Repeat this many times to complete the impact operation. Features:  High power, good impact effect, high reliability, long service life, light weight, portability, very convenient operation, sophisticated design, wide range of use, significant energy saving, and cost reduction.

effect:

 1. Turn the residual tensile stress in the surface layer of the metal weld into a compressive stress, thereby greatly improving the fatigue life of the metal structure.

2. Change the metal crystal grain structure in the surface layer to produce a plastic deformation layer, thereby significantly improving the strength and hardness of the metal surface layer.

3. Improve the geometry of the weld toe and reduce stress concentration.

4. Change the welding stress field, significantly reduce welding deformation and improve the dimensional stability of the workpiece.
titanium bar     machined titanium round rod     titanium round rod     Gr5 Titanium Bar