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Device of multi-field coupling refined metal solidification structure and refining process thereof

A technology of metal solidification and organization, which is applied in the field of metal material processing, can solve the problems of single metal melt refinement treatment technology, and achieve the effects of shortening processing time, refining grains, and promoting nucleation

Inactive Publication Date: 2018-08-10
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, in order to solve the single problem of the existing metal melt refinement treatment technology, the present invention provides a device for multi-field coupling refinement of metal solidification structure and simplifies the casting metal solidification structure refinement process

Method used

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  • Device of multi-field coupling refined metal solidification structure and refining process thereof

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Embodiment 1

[0035] Taking the refinement of hypereutectic high-chromium cast iron (liquidus at 1337°C and solidus at 1276°C) solidification structure as an example, combined with the refinement process of multi-field coupling to refine the solidification structure of metal, further describe:

[0036] Such as figure 1 As shown, the hypereutectic high chromium cast iron is loaded into the crystallizer 9, the crystallizer 9 is installed on the lifter 8, and the lifter 8 is lifted into the cooling cover 11 through the base 6, and the lifter 8 fixes the crystallizer 9 The part closely fits with the cooling cover 11; the electrode 17 and the thermocouple 20 are installed on the sealing cover 24, positioned or fixed by the bracket 19, the motor 23 is connected to the stirring rod 16 and installed on it, and the electrode 17, the thermocouple 20 and the The position of the motor 23, the sealing cover 24 descends through the guide post 21 and closely cooperates with the sealing cover 14, the argon...

Embodiment 2

[0038] The following takes the refinement of Cu-10%Sn alloy (the liquidus is 1021°C and the solidus is 830°C) as an example, combined with the refinement process of multi-field coupling refinement of metal solidification structure for further description:

[0039] Such as figure 1 As shown, the Cu-10% Sn alloy is loaded into the crystallizer 9, the crystallizer 9 is installed on the lifter 8, and the lifter 8 is lifted into the cooling cover 11 through the base 6, and the lifter 8 fixes the crystallizer 9 The part is tightly matched with the cooling cover 11; the electrode 17 and the thermocouple 20 are installed on the sealing cover 24, positioned or fixed by the bracket 19, the motor 23 is connected to the stirring rod 16 and installed on it, and the electrode 17, the thermocouple 20 and the motor are adjusted 23 position, the sealing cover 24 descends through the guide post 21 and closely cooperates with the sealing cover 14, the argon gas is introduced through the air inle...

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Abstract

The invention belongs to the technical field of metal material processing, and relates to a device of a multi-field coupling refined metal solidification structure and a refining process thereof. An induction coil generates a thermocouple effect to heat molten metal, a temperature recorder records the molten metal temperature detected by a thermocouple, after the molten metal is melted, a stirringrod is descended ,a rotating speed controller is turned on to carry out mechanical stirring on the molten metal, an electrode is descended, a pulse power supply is turned on, pulse current is introduced into the molten metal, the pulse power supply, a rotating speed controller and an induction heating instrument are used for adjusting the pulse current size, the stirring speed of the stirring rodand the heating speed of the induction coil, and an electric field, a force field, a thermal field and a magnetic field are coupled in a multi-field mode and act on the molten metal together, so thatthe nucleation is promoted, the dendritic crystal is broken, and refined grains are refined; the device structure of the multi-field coupling refined metal solidification structure is highly integrated, so that the molten metal processing process is optimized, the processing time is shortened, the cost is saved, and meanwhile the problem that existing molten metal refining processing technology is single is solved.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and relates to a multi-field coupling device for refining metal solidification structure and a refining process thereof. Background technique [0002] In the field of existing metal material processing technology, the ideal metal solidification structure has uniform and fine equiaxed crystals with small anisotropy, uniform deformation during processing, excellent performance and good plasticity, which is beneficial to casting and subsequent processing. To obtain this structure, it is usually necessary to refine the metal melt. In 1932, Dr. Dreyfus discovered from Faraday's electromagnetic induction principle that the low-speed moving induction magnetic field can generate strong stirring in molten steel, and applied it to the treatment of metal melts; in 1990, M Nakada et al. first used pulse current to act on During the solidification process of the alloy, the solidification st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D27/02B22D27/04B22D27/20
CPCB22D27/02B22D27/04B22D27/20
Inventor 吕海洋朱江冯桐徐强丁明德刘香李忠彬
Owner CHONGQING UNIV OF ARTS & SCI
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