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Device and method for preparing aluminum alloy semi-solid state slurry

A semi-solid slurry and aluminum alloy technology, applied in the field of semi-solid metal processing, can solve the problems of lack of multiple physical methods, achieve the effects of improving nucleation rate and refinement uniformity, improving physical properties, and avoiding unevenness

Pending Publication Date: 2019-12-31
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0011] The purpose of the present invention is to overcome the lack of a preparation device capable of organically combining various physical methods in the prior art in aluminum alloy microstructure refinement and spheroidization processing, and to provide a device for ultrafine preparation of aluminum alloy semi-solid slurry and method

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  • Device and method for preparing aluminum alloy semi-solid state slurry
  • Device and method for preparing aluminum alloy semi-solid state slurry

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Embodiment

[0054] Preparation of aluminum alloy semi-solid slurry: take 6.8kg of 7A04 aluminum alloy and heat it to melt, keep it warm for 5 minutes, transfer it to the crucible after the temperature of the alloy liquid is stable, and control the heating of the resistance wire through the control cabinet to keep the temperature of the alloy liquid at 10°C higher than the melting point . At the same time, the electromagnetic stirring circle around the pulping chamber is activated through the control cabinet to realize electromagnetic stirring. The electromagnetic stirring power is 400W and the frequency is 20Hz. Turn on the ultrasonic device through the control cabinet, keep the ultrasonic probe extending 1cm into the alloy liquid surface, and use 800W power to ultrasonic. The electromagnetic stirring and ultrasonic time are 5 minutes in total. After the completion, the slurry is poured into the pressure chamber for die-casting to obtain high-quality and high-strength aluminum alloy.

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Abstract

The invention provides a device and method for preparing aluminum alloy semi-solid state slurry. The device for preparing the aluminum alloy semi-solid state slurry comprises a control cabinet, a first electromagnetic agitator, a second electromagnetic agitator, a thermocouple, an ultrasonic mechanism, a slurry preparing chamber, a base and a support. The ultrasonic mechanism is connected to the support. The support is connected to the base. The ultrasonic mechanism comprises a horn, a transducer and an ultrasonic tool head. The two ends of the horn are connected with the transducer and the ultrasonic tool head respectively. The slurry preparing chamber is arranged below the ultrasonic tool head. The periphery of the slurry preparing chamber is surrounded by the first electromagnetic agitator. The second electromagnetic agitator is located below the slurry preparing chamber. The control cabinet is connected with the first electromagnetic agitator, the second electromagnetic agitator, electric resistance wires, the thermocouple and the ultrasonic mechanism. One end of the thermocouple is arranged in the slurry preparing chamber. According to the device for preparing the aluminum alloy semi-solid state slurry, the ultrasonic field and the electromagnetic field are applied to a single device for preparing the aluminum alloy semi-solid state slurry in a combined and synergetic manner; and the ultrasonic wave and electromagnetic stirring technologies can be completed simultaneously with the need for only one operation working procedure.

Description

technical field [0001] The invention relates to the field of semi-solid metal processing, in particular to a device and method for preparing aluminum alloy semi-solid slurry. Background technique [0002] Because of its high strength, low density and high corrosion resistance, aluminum alloys are widely used in various industrial sectors such as aviation, automobiles, shipbuilding, construction, chemicals, and machinery. [0003] In order to obtain better mechanical properties, especially high-strength aluminum alloy castings with better plasticity and toughness, the existing technology mainly focuses on the control of the solidification and transmission behavior of the high-strength aluminum alloy semi-solid slurry melt, specifically using various The plan is to improve the refinement and spheroidization of slurry structure to improve the performance of aluminum alloy. The existing methods for improving the refinement and spheroidization of aluminum alloy mainly include: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/20
CPCB22D17/20B22D17/007
Inventor 赵君文张旭巫国强戴光泽韩靖
Owner SOUTHWEST JIAOTONG UNIV
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