Aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof

Abstract

The invention relates to an aluminum alloy hollow ingot semi-continuous casting crystallizer and application thereof. A water diversion ring is arranged in a cooling water cavity of a water jacket; a water spraying hole communicated with the cooling water cavity is toward a cooling wall of an outer crystallizer; an outer lubricant channel is arranged in the outer crystallizer body; one end of the outer lubricant channel is formed on the outer oil storage groove; an outer oil injection ring on the outer oil storage groove is toward a cooling wall of the outer crystallizer body; an outer heat preservation cap is fixed on the outer crystallizer body; a core body is placed in the center of the outer crystallizer body; the inner side of the core body is of a hollow structure; a water inlet pipe is arranged on the core body; a water outlet pipe coaxial to the water inlet pipe is sleeved on the outer side of the water inlet pipe; an inner lubricant channel is arranged in the core body; one end of the inner lubricant channel is formed in the inner oil storage groove; an inner oil injection oil ring on the inner oil storage groove is toward the core cooling wall; and an inner heat preservation cap is fixed on the core body. The hollow ingot is cooled by circulating water during casting; and the cooling walls of the outer crystallizer body and the core are subjected to pulse-type oil injection lubrication, so that the fineness of the inner surface and the outer surface of the hollow ingot can be obviously improved, and the peeling amount before subsequent plastic processing is reduced.

Description

technical field [0001] The invention relates to an aluminum alloy hollow ingot semi-continuous casting crystallizer and an application thereof, belonging to the technical field of aluminum alloy casting. Background technique [0002] There are two common production methods for aluminum alloy hollow ingots: one is to cast a solid billet first, and then extrude or perforate to obtain a hollow ingot; The continuous casting method directly casts hollow ingots. Compared with the former, the latter method has significant advantages such as fewer processes, short production cycle, low energy consumption, and high metal utilization rate, and can produce hollow ingots that are difficult to pierce. Therefore, the direct production of hollow ingots by semi-continuous casting is the main way to produce aluminum alloy hollow ingots at present. However, due to the long length of the cooling wall of the traditional hollow ingot crystallizer and the lack of a thermal insulation cap, the m...

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Problems solved by technology

However, due to the structure limited by the insulation cap, the mold cannot lubricate the inner and outer surfaces of the hollow ingot during the casting process. Due to the friction between the billet shell and the cooling wall of the mold, the hollow ingot, especially the high alloyed aluminum alloy The surface quality of the core ingot still needs to be further improved

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