Cov khoom siv ultrasonic hlau yaj ua cov khoom siv yog tsim los ntawm ultrasonic co qhov chaw thiab lub tshuab hluav taws xob ultrasonic: cov khoom siv ultrasonic vibration yog siv los tsim ultrasonic kev co - feem ntau suav nrog ultrasonic transducer, ultrasonic horn thiab lub taub hau (hloov lub taub hau), thiab xa lub zog vibration mus rau cov hlau. yaj.

Muaj nuj nqi ntawm ultrasonic hlau yaj:

1. Tshem tawm impurities: nws yog ib qho nyuaj heev rau cov me me inclusions nyob rau hauv cov kua hlau kom ntab.Tsuas yog thaum lawv sib sau ua ke nws yuav yooj yim dua ntab.Siv ultrasonic hlau yaj cov cuab yeej kho mob ntxiv ultrasonic rau hauv cov tshuaj, lub ultrasonic sawv yoj tuaj yeem ua rau cov hmoov suav nrog hauv cov tshuaj delamination thiab agglomeration tiav.

2. Ultrasonic degassing: ultrasonic muaj cov nyhuv zoo ntawm kev tshem cov roj los ntawm cov hlau molten.Ultrasonic elastic vibration tuaj yeem degass cov alloy hauv ob peb feeb.Thaum lub ultrasonic vibration yog nkag mus rau hauv cov hlau molten, nws pom tias muaj cavitation tshwm sim, uas yog vim cov kab noj hniav generated tom qab lub continuity ntawm cov kua theem yog tawg, yog li cov roj yaj nyob rau hauv cov kua hlau concentrates nyob rau hauv nws.

3. Grain refinement: thaum ua castings los ntawm ultrasonic kev co solidification txoj kev, lub ultrasonic yoj yuav tsim zoo thiab tsis zoo alternating suab siab thiab daim ntawv dav hlau.Nyob rau tib lub sijhawm, vim tias cov nyhuv nonlinear, nws yuav tsim cov suab nrov thiab micro suab ntws, thaum ultrasonic cavitation yuav tsim high-speed micro dav hlau ntawm qhov sib txuas ntawm cov khoom thiab cov kua.

Cov nyhuv cavitation hauv cov kua ultrasonic tuaj yeem txiav tawm thiab rhuav tshem cov dendrites, cuam tshuam rau pem hauv ntej solidification, nce cov nyhuv ntawm nplawm thiab diffusion, thiab purify cov qauv, refine cov nplej thiab homogenize cov qauv.

Ntxiv rau qhov kev puas tsuaj ntawm dendrites los ntawm kev vibration, lwm lub luag haujlwm tseem ceeb ntawm ultrasonic kev co solidification yog los txhim kho qhov ua tau zoo undercooling ntawm cov kua hlau thiab txo qhov tseem ceeb nucleus radius, thiaj li nce tus nqi nucleation thiab refine cov nplej.

3. Txhim kho slab zoo: ultrasonic hlau yaj cov cuab yeej kho mob tuaj yeem ua rau pwm los txhim kho qhov zoo ntawm slab.Kev co ntawm cov pwm los ntawm ultrasonic yuav siv tau rau billet, tawg thiab slab, thiab tsis muaj qhov tsis zoo zawv zawg thaum siv ultrasonic kev co.Thaum casting billet thiab tawg, ib tug heev du billet nto yuav tau tom qab siv ultrasonic co rau pwm.