Super duralumin casting compound electromagnetic pulse solidification structure treatment device and method

Abstract

The invention discloses a composite electromagnetic pulse solidification structure treatment device and method for casting of ultralumin. The treatment device comprises a metal mold, a side electromagnetic pulse device and a top electromagnetic pulse device, wherein an inner chamber of the metal mold is used for storing a melt; the sidewall of the metal mold comprises an outer layer and an inner layer; a water cooling cavity is formed between the outer layer and the inner layer; a cooling water inlet is formed in the bottom part of the water cooling cavity, and a cooling water outlet is formed in the top part of the water cooling cavity; the side electromagnetic pulse device is arranged at the outer wall of the metal mold; the top electromagnetic pulse device is positioned right above the inner chamber of the metal mold. According to the composite electromagnetic pulse solidification structure treatment device for casting of the ultralumin, electromagnetic energy can enter the melt to the maximum, so that the metal mold can be uniformly preheated, and the core structure of an ultra-thick casting can be uniformly thinned through the electromagnetic energy while the solidification supercooling degree of a casting blank is improved.

Description

technical field [0001] The invention relates to a casting method and a casting device, in particular to a super-duralumin casting composite electromagnetic pulse solidification structure treatment device and a treatment method capable of preheating metal molds and improving casting structure performance. Background technique [0002] Super duralumin is one of the aluminum alloys with the greatest development potential at present. Because of its strength equivalent to super-strength steel (up to 680Mpa) and light weight, it is widely used in the production of aircraft skins, wing ribs, landing gear, etc. However, due to the low stability of the cast original structure and poor low-cycle fatigue strength of super-duralumin, its use in special equipment is greatly limited. Super duralumin parts are usually obtained by casting, and whether the casting method and process are appropriate is directly related to the quality of the ingot. [0003] Metal mold casting has the characte...

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Problems solved by technology

In order to improve the above situation, the metal mold is usually preheated first. Traditional metal mold preheating methods include: gas preheating, electric heating, heating furnace preheating, etc. The above methods are prone to large temperature drop after heating, uneven heating, and preheating temperature It is difficult to control the situation stably, and the cold shut phenomenon of the casting thin strip caused by uneven heating is very complicated to improve the process by the heat supplement method, and the quality of the core and edge of the casting with too large thickness changes greatly, and there are loose structures, Severe stomata and other problems

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