Semi-continuous casting device

Abstract

The invention relates to a semi-continuous casting device. The semi-continuous casting device is composed of a liquid inlet, a heat preservation cover, a heat preservation cup, molten metal, a liquidguide pipe, an ultrasonic vibration rod, a protective cover, a platform, a protective gas pipe, a crystallizer, an electromagnetic coil, cooling water holes, crystallizer molten metal, a casting rod,a dummy ingot device, a flow limiting block, a heat preservation cup protective gas inlet pipe and the like. The semi-continuous casting device is used for semi-continuous casting of light alloys, gasprotection is adopted to prevent the molten metal from being oxidized, and electromagnetic stirring and ultrasonic vibration modes are adopted in the solidification process to jointly refine crystalgrains. According to the semi-continuous casting device, the defects that in a traditional semi-continuous casting process, the molten metal is prone to being oxidized, slagging and other factors damaging the quality of transmitted liquid are overcome, and the electromagnetic stirring and ultrasonic vibration combined mode is adopted in the casting rod solidification process, so that internal quality of the casting rod is better.

Description

technical field [0001] The invention relates to a semi-continuous casting device. The semi-continuous casting device is mainly used in the fields of high-performance aluminum alloy and magnesium alloy semi-continuous casting, especially in the production of high-strength aluminum alloy and magnesium alloy semi-continuous casting rods. Provide high-quality equipment and technology for the production of high-strength light alloy spare parts in the aerospace and aerospace fields. Background technique [0002] In the semi-continuous casting production process of aluminum alloy and magnesium alloy, especially in the production process of large-scale casting rods, defects such as slag inclusion, shrinkage cavity shrinkage, coarse crystal grains and serious composition segregation are easily formed inside the casting rods, which affect the quality of the casting rods. [0003] At present, in order to prevent the above defects, one of the existing methods is to introduce electromagn...

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Problems solved by technology

[0003] At present, in order to prevent the above defects, one of the existing methods is to introduce electromagnetic vibration into the production process to refine the grains. Due to the extreme skin effect of electromagnetic stirring, the effect of electromagnetic stirring can only be better in the surrounding area of ​​the casting rod, but the effect in the middle of the casting rod is not good, and the effect of ultrasonic vibration alone is opposite to that of electromagnetic vibration, and the stirring effect in the middle Good, but the peripheral effect is poor; at the same time, many semi-continuous rod casting processes do not take good protection, which leads to the easy oxidation of slag inclusions and hydrogen absorption of the metal melt during the casting process, resulting in slag inclusions and pore defects inside the casting; in addition, In the conventional semi-continuous casting process, the metal melt is often not heat-insulated and heated, and the temperature process parameters cannot be accurately controlled, which often results in unstable semi-continuous casting quality.

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