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Device and method for refining grains through non-contact ultrasonic vibration

A technology of grain refinement and ultrasonic vibration, applied in the field of alloy grain refinement and strengthening, metal material processing, can solve the problems of metal and its alloy grain refinement, achieve continuous ultrasonic vibration, prevent excessive temperature Effect

Active Publication Date: 2019-11-29
辽宁中科博研科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem of metal and alloy grain refinement

Method used

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  • Device and method for refining grains through non-contact ultrasonic vibration
  • Device and method for refining grains through non-contact ultrasonic vibration
  • Device and method for refining grains through non-contact ultrasonic vibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 , figure 2 , Image 6 , Figure 7 and Figure 8 As shown, a non-contact ultrasonic vibration device for grain refinement, the upper end of the box body 2 is provided with a box cover 3, the upper end of the ultrasonic vibrating head 1 is fixed on the ultrasonic vibrating head supporting fixture 16, and the ultrasonic vibrating head supporting jig 16 The lower end of the support fixture base 17 is threadedly connected to the support fixture base 17. The support fixture base 17 has a certain weight to prevent the ultrasonic vibration head 1 from falling when it is working. The ultrasonic vibrating head supporting fixture 16 is used to clamp one end of the ultrasonic vibrating head 1 and both sides are arc-shaped fixture pieces 20, and one side of the arc-shaped fixture piece 20 is provided with two hinges 21 that control the opening and closing of the arc-shaped fixture pieces 20, The other side is locked by screws, nuts or bolts. The lower end of the ...

Embodiment 2

[0040] like image 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, a non-contact ultrasonic vibration device for grain refinement, the upper end of the box body 2 is provided with a box cover 3, the upper end of the ultrasonic vibrating head 1 is fixed on the ultrasonic vibrating head supporting fixture 16, and the ultrasonic vibrating head supporting jig 16 The lower end of the support fixture base 17 is threadedly connected to the support fixture base 17. The support fixture base 17 has a certain weight to prevent the ultrasonic vibration head 1 from falling when it is working. The ultrasonic vibrating head supporting fixture 16 is used to clamp one end of the ultrasonic vibrating head 1 and both sides are arc-shaped fixture pieces 20, and one side of the arc-shaped fixture piece 20 is provided with two hinges 21 that control the opening and closing of the arc-shaped fixture pieces 20, The other side is locked by screws, nuts or bolts. The lower end of the ...

Embodiment 3

[0056] A method for preparing grains refined by ultrasonic vibration using the equipment of the above-mentioned equipment embodiment 1 or equipment embodiment 2, comprising the following steps:

[0057] ① Melt Al, Cr, Fe and Ni-based high-entropy alloys to be refined into a metal melt 15 in the crucible 11 and keep the metal melt 15 at 25°C above the liquidus line for 0.5-3h;

[0058] ② Cool the molten metal 15 for a period of time until the temperature of the molten metal drops to the mushy region of the metal, preheat the ceramic 13 at the temperature of the molten metal, and keep it warm at this temperature for 40 minutes. The heating rate is 30°C / min. Fix the preheated ceramics 13 to the fixed ring 14 and cover the box cover 3 to immerse the ceramics 13 in the molten metal, apply ultrasonic vibration above the vibrating plate 6, and then conduct it to the ceramics 13, and the ceramics 13 is in a paste state. Vibrate in the zone for 10 minutes;

[0059] ③After vibrating f...

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Abstract

The invention relates to a device and method for refining grains through non-contact ultrasonic vibration. The lower end of an ultrasonic vibration head penetrates through a box cover and is pressed on the vibration plate, the vibration plate is connected with a the vibration plate connecting piece, the vibration plate connecting piece penetrates through a fixing plate, the lower end of the vibration plate connecting piece is connected with ceramic, the vibration plate connecting piece between the vibration plate and the fixing plate is provided with a spring in a sleeve mode, the fixing plateis connected to the box cover through a plurality of fixing plate connecting rods, a crucible is arranged in the box body, an induction coil is arranged on the periphery of the crucible, and the ceramic is positioned inside the crucible. The method comprises the following steps that 1, metal is molten in the crucible, and heat preserving is conducted; 2, metal melt is cooled to a pasty region, then the ceramic is immersed into the molten metal, and applying ultrasonic vibration is applied to the mixture; 3, the ceramic is removed from the metal after vibrating is conducted for a period of time; and 4, the refined metal is removed out of the crucible and cooled to room temperature. According to the device and method, continuous ultrasonic vibration can be realized, and grains can be refined.

Description

technical field [0001] The invention belongs to the field of metal material processing, relates to the field of refinement and strengthening of alloy grains, in particular to a non-contact ultrasonic vibration equipment and method for grain refinement. Background technique [0002] Grain refinement (that is, reducing the primary α-Al grain size) is an important way to obtain high-quality metal ingots, reduce segregation, and improve metallurgical quality. It also helps to improve the processing properties of alloys, and it is also one of the necessary means to improve the mechanical properties of cast alloys in industry. Ultrasonic action has the effect of grain refinement on a variety of alloys. Ultrasound affects the microstructure of the melt through physical effects such as cavitation, acoustic flow effects, and radiation pressure, and can effectively improve the structure and properties of materials. A development direction of preparing super metals. Compared with ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
CPCC21D10/00
Inventor 曲迎东崔曼李广龙周珊李荣德苏睿明聂赛男田畅
Owner 辽宁中科博研科技有限公司