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Dynamic vibration exerting method for aluminum alloy ultrasonic cleaning degassing

An aluminum alloy and ultrasonic technology, which is applied in the field of dynamic vibration application for ultrasonic purification and degassing of aluminum alloys, can solve problems such as affecting the efficiency of ultrasonic degassing and difficulty in floating, and achieve the effect of widely popularizing and applying value and improving the effect efficiency.

Active Publication Date: 2014-07-02
湖南中创空天新材料股份有限公司
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Problems solved by technology

However, due to the sound pressure amplitude effect generated by the continuous vibration of the vibrating rod, it will exert a shock wave effect on some large bubbles floating up, so that these bubbles will be broken into small bubbles (such as figure 2 As shown), these small bubbles are difficult to float to the liquid surface due to insufficient buoyancy
This affects the ultrasonic degassing efficiency to a certain extent

Method used

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  • Dynamic vibration exerting method for aluminum alloy ultrasonic cleaning degassing
  • Dynamic vibration exerting method for aluminum alloy ultrasonic cleaning degassing
  • Dynamic vibration exerting method for aluminum alloy ultrasonic cleaning degassing

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] The present invention adopts dynamic intermittent vibration, that is, relative to static continuous vibration (traditional vibration method), the ultrasonic action is applied to the aluminum alloy melt for a period of time at an interval of Δt=20-30S, and the cycle is like this. The process of dynamic vibration ultrasonic degassing is as follows: image 3 , Figure 4 and Figure 5 As shown, after the ultrasonic vibration acts for a period of time, the vibration is stopped for a certain period of time, and then the ultrasonic vibration is continued, and so on. Such as image 3 As shown, after a period of ultrasonic action of the vibration transmission rod 1, a large number of cavitation nuclei are generated in the aluminum melt 2 in the mold 3, and the cavitation nuclei grow into cavitation bubbles 4, and the cavitation bubbles converg...

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Abstract

The invention discloses a dynamic vibration exerting method for aluminum alloy ultrasonic cleaning degassing. Under certain power (power P = 170 W-240 W) and certain time intervals (time interval delta t = 20 S-30 S), ultrasonic effect of a period of time (effect time t = 55 s-65 s) is exerted on an aluminum alloy melt body, and the cyclic action is carried out for 5 times-10 times. The dynamic vibration exerting method is high in cleaning degassing efficiency, mechanical property is improved, cracks are reduced, and the requirements of high-purity large-scale ingot casting can be met.

Description

technical field [0001] Ultrasonic application technology, metal purification technology. Background technique [0002] Modern aerospace, transportation, information industry and other high-tech fields, especially the important high-tech equipment planned by the national major projects, not only put forward higher and higher requirements for the performance of aluminum alloys, but also require the use of large integral components to reduce structural weight , to improve the stiffness and effectiveness of the equipment. With the increasing performance requirements of aluminum materials in different fields, the preparation of high-performance aluminum materials is an urgent problem facing the sustainable development of the aluminum industry. The comprehensive properties of high-strength aluminum alloys are low, and large-scale aluminum ingots cannot be prepared and produced qualified, resulting in a serious shortage of high-performance aluminum materials. Among them, porosity...

Claims

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Application Information

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IPC IPC(8): B22D11/114
Inventor 李晓谦蒋日鹏张立华陈铭张雪
Owner 湖南中创空天新材料股份有限公司
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