Wrought aluminum alloy hollow ingot hot top casting crystallizer

Abstract

The invention discloses a wrought aluminum alloy hollow ingot hot top casting crystallizer, and relates to a casting crystallizer. The problems that an inner hole of a hollow round cast ingot produced by an existing crystallizer is prone to tension fracture and crack defects are solved. The invention discloses a wrought aluminum alloy hollow ingot hot top casting crystallizer which is composed of an outer crystallizer, a crystallizer core and a core support. The crystallizer core is composed of a water cooling gland, a copper crystallization ring, a graphite ring, an adapter plate, a protective sleeve, an adjusting lead screw, an exhaust pipe, a regular tee joint, a metal hose and a plug wire. A hot top mode is adopted for casting, and the grain size of an aluminum alloy hollow cast ingot structure and the surface quality of an inner hole are improved; the conical outer wall can reduce friction and prevent tension cracks; the inner cavity of the crystallizer core is a whole, so that water leakage and gas leakage can be prevented; the used graphite ring has lubricating property and heat-conducting property, so that uneven local stress caused by quenching shrinkage of the cast ingot can be prevented, the cold cracking tendency of the cast ingot is further reduced, and a qualified cast ingot product is cast; the method is suitable for hollow ingot hot top casting.

Description

technical field [0001] The invention relates to a casting crystallizer. Background technique [0002] In recent years, in semi-continuous casting, deformed aluminum alloy hollow round ingots have received widespread attention. Deformed aluminum alloy hollow round ingots can not only effectively improve production efficiency, but also save production costs, and can replace solid round ingots in some products. Finished product processing. [0003] However, in the traditional hollow round ingot casting process, due to the uneven distribution of water cooling in the crystallizer and poor lubricity, defects such as cracks and cracks are prone to occur in the inner hole of the hollow round ingot, and the scrap rate of cracking is as high as 1.5%. . Contents of the invention [0004] The invention aims to solve the problem that the inner hole of the hollow round ingot produced by the existing crystallizer is prone to pull cracks and crack defects, and proposes a deformed alumin...

AI Technical Summary

Problems solved by technology

[0004] The present invention is to solve the problem that the inner hole of the hollow round ingot produced by the existing crystallizer is prone to cracks and crack defects, and proposes a deformed aluminum alloy hollow ingot hot-top casting crystallizer

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