Method and apparatus for fining metal solidified organs by using magneto-oscillation
A technology of metal solidification and magneto-induced oscillation, applied in the field of magneto-induced oscillation to refine metal solidification structure, can solve problems such as strong fluctuations on the metal surface, affecting production safety, and molten metal slag, and achieve the effect of reducing obstacles
Active Publication Date: 2007-06-06
SHANGHAI UNIV
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Problems solved by technology
[0005] In pulse current (or electric pulse) solidification fine grain technology, the current passes directly through the metal melt, which not only affects production safety, but also causes strong fluctuations and even splashes on the metal surface when the current is large, causing molten metal slag
In the pulsed magnetic field solidification fine-grain technology, although the current does not pass directly through the metal melt, after a strong magnetic field is applied to the metal melt, an induced current will be generated in the metal melt. When the magnetic field is strong, the strong magnetic field will also make the metal surface Generate strong fluctuations or even splashes, resulting in molten metal slag
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[0022] Referring to Fig. 1, a special device used in the method of magneto-oscillation refining metal solidification structure of the present invention includes a high-voltage pulse power supply 1, a sand container 2 for containing molten metal, a temperature acquisition and recording system 3, and a magneto-oscillation single-layer coil 4 and conductor 5; see Fig. 2, high-voltage pulse power supply 1 is made up of charging system 6, high-voltage pulse capacitor 7, high-frequency switch 8; 4-phase connection, so that the high-voltage pulse capacitor 7 discharges the single-layer coil 4, and a pulsed strong magnetic field is generated between the metal melt and the discharge coil; the sand mold container containing the metal melt is arranged on the ring-shaped magneto-induced oscillation single-layer coil In the central position, a high-voltage pulse power supply 1 is installed on one side, and an automatic temperature acquisition and recording system device 3 is installed on th...
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A magneto-oscillating method for fining the solidified metallic structure features that an oscillation generator consisting of the specially designed circuit and coil and an UHF pulse magnetic field are used to generate the mageneto-oscillation on the surface of molten metal. Its apparatus is composed of high-voltage pulse power supply, sandy container of molten metal, temp acquiring and recording system, and the coil and conductor for magneto-oscillation, said high-voltage pulse power supply comprises charging system, high-voltage pulse capacitor and HF switch.
Description
technical field [0001] The invention relates to a method and a device for refining metal solidified structure by magnetic oscillation, and belongs to the technical field of metal material modification treatment. Background technique [0002] The refinement of metal solidification structure is beneficial to improve the comprehensive performance of metal. For the refinement of solidification structure, the commonly used methods are inoculation, modification treatment, microalloying or physical stirring. With the continuous development of solidification technology, many emerging solidification structure control processes have emerged, among which the impact of external field treatment on metal solidification structure and solid phase transformation is very significant, and great progress has been made. The outfield is under the condition of energy saving and material saving, which reduces the pollution to the environment and the material itself. [0003] In today's field proce...
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IPC IPC(8): B22D27/02
Inventor 翟启杰龚永勇高玉来李仁兴井进贤
Owner SHANGHAI UNIV