Patent ID: 12214418

DETAILED DESCRIPTION OF THE EMBODIMENTS

The following clearly and completely describes the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

In order to make the above objectives, features and advantages of the present disclosure more apparent and easier to understand, the present disclosure will be further described in detail with the attached drawings and specific embodiments.

As shown in FIG., the present disclosure provides a device for improving quality of aluminum alloy horizontal continuous casting billet by applying ultrasonic treatment, including an ultrasonic generator1, an ultrasonic transducer2, an amplitude transformer3, a holding furnace4, an ultrasonic probe and a traction device9. The ultrasonic generator1is electrically connected with the ultrasonic transducer2; the ultrasonic transducer2is threadedly connected with the ultrasonic probe through the amplitude transformer3, and the ultrasonic probe is placed in the holding furnace4. A communication opening is formed at a bottom of the holding furnace4, and the traction device9is installed at the communication opening. Further, the holding furnace4is poured with metal liquid5.

The ultrasonic probe includes a vertical probe6and a horizontal probe7. The vertical probe6is vertically arranged, and a top end of the vertical probe is threadedly connected with the amplitude transformer3, one end of the horizontal probe7is threadedly connected with a bottom end of the vertical probe6.

The vertical probe6and the horizontal probe7are both made of graphite.

The end of the horizontal probe7is provided with an oblique angle of 44.8-45.5 degrees.

In the embodiment, an other end of the horizontal probe7is located in a liquid cavity12of the aluminum alloy horizontal continuous casting billet of the holding furnace4.

In the embodiment, a crystallizer8is further installed on the traction device9.

In the embodiment, an ultrasonic frequency of the ultrasonic generator1is 20 kilohertz, and an ultrasonic power of the ultrasonic generator1is 100-6000 watts.

In another embodiment of the present disclosure, the vertical probe6and the horizontal probe7are both made of high-strength graphite.

In yet another embodiment of the present disclosure, when the sound wave propagates from one medium to another medium, a part of the sound wave is reflected at the interface between the two media, and the other part of sound wave is transmitted through the interface and propagates in the other medium. When the wave is reflected at the interface, the ratio of the sine of the incident angle to the sine of the reflection angle is equal to the ratio of the wave velocities of the sound wave in the media. When the wave refracts at the interface, the ratio of sine of incident angle to sine of refraction angle is equal to the ratio of wave velocity of incident wave in the first medium to wave velocity of refracted wave in the second medium. And when the refraction angle is greater than 90 degrees, the sound wave is totally reflected.

Further, during ultrasonic treatment of aluminum liquid by ultrasonic probe, when ultrasonic wave propagates to graphite-aluminum liquid interface10through the vertical probe6, the propagation direction of reflected wave is parallel to that of the horizontal probe7. Because the vertical probe6and the horizontal probe7are made of the same material, the incident angle and the reflection angle are equal and are both 45 degrees. And according to the sound propagation characteristics of sound waves in aluminum and graphite, when the incident angle exceeds about 23 degrees, the refraction angle is greater than 90 degrees, that is, total reflection occurs, so refracted waves are not generated. When the reflected wave further propagates to the interface11between graphite and aluminum alloy liquid at the other end of the horizontal probe7, the incident angle is 0 degree, and about 60% of the acoustic energy propagates into the aluminum alloy liquid. By moving the position of the ultrasonic generator1above the holding furnace4, the other end of the horizontal probe7is located in the liquid cavity12of the aluminum alloy continuous casting billet, so that the ultrasonic wave directly acts on the liquid cavity of the aluminum alloy continuous casting billet, and the aluminum alloy horizontal continuous casting billet with grain refinement, and uniform composition and high quality is obtained.

In the description of the present disclosure, it should be understood that the terms “longitudinal”, “transverse”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc. indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, solely for the convenience of describing the present disclosure, instead of indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, they cannot be understood as a limitation of the present disclosure.

The above-mentioned embodiments only describe the preferred mode of the disclosure, and do not limit the scope of the disclosure. Under the premise of not departing from the design spirit of the disclosure, various modifications and improvements made by those of ordinary skills in the art to the technical solutions of the present disclosure shall fall within the protection scope of the present disclosure.