Alloy ingot casting mould with cooling device and ingot casting method thereof

Abstract

The invention discloses an ingot casting mould with a cooling device and an ingot casting method thereof. The alloy ingot casting mould comprises a pouring groove which takes a reverse convex shape due to a small inner cavity bottom and a large inner cavity opening; the steps of both sides of the inner cavity are respectively provided with a truncated-cone-shaped hoisting iron core of which the diameter at the lower end is large and the diameter at the upper end is small; the hoisting iron core is provided with a cooling open hole with an opening at the top end; and the cooling open holes areinserted with a cooling hopper respectively. The ingot casting method comprises a pouring process, a cooling process and a mould-release process. In the cooling process, a water solution of sodium dodecylsulphate and an anionic surface active agent is applied to cool the hoisting iron cores and the upper surface of the alloy by the cooling hoppers. The invention can facilitate the even adding of acooling agent and even cooling of the whole alloy ingot, reduce the segregation of elemental composition and eliminate the wrinkles, cracks, bubbles and macro shrinkages on the surface of the alloy ingot and on the lateral walls of a hoisting hole, thereby improving product quality and rate of finished goods.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to an alloy ingot mold with a cooling device and an ingot casting method. Background technique [0002] At present, a large alloy ingot mold is used in the pouring process of larger alloy ingots. The inner cavity of this alloy ingot mold is in the shape of an inverted convex shape with a small bottom and a large mouth. A conical hoisting iron core with a large diameter at the lower end and a small diameter at the upper end, the upper end of the hoisting iron core is higher than the upper opening of the ingot mould, and there is a through hole with a vertical axis. After the molten alloy is poured and cooled, the hoisting machine can easily remove the alloy ingot and transport it to a suitable position by pulling the hoisting iron core. After the hoisting iron core is smashed, hoisting holes are formed on both sides of the alloy ingot. It can facilitate the secondary loading and us...

AI Technical Summary

Problems solved by technology

The surface cooling methods of alloy ingots in the prior art mainly include natural cooling method, direct water cooling method, heat preservation and cooling method with cover, atomization cooling method, etc. The disadvantages of these methods are that the uniformity of alloy ingot components is not ideal, the surface quality is poor, and the alloy ingot Cracks, bubbles, etc. are easy to form on the surface

The process of the alloy ingot condensing from liquid to solid requires a long cooling time, which is likely to cause segregation and volume shrinkage of certain components. Many macroscopic shrinkage cavities and cracks appear on the upper surface of the alloy ingot, which affects product quality and yield.

In particular, the hoisting iron core is small in size, fast in temperature and slow in cooling. The section in contact with the alloy forms a gap after the alloy melt cools and shrinks, and the cooling of the gap is relatively slow. A large number of macro shrinkage cavities and cracks are formed on the wall, especially the macro shrinkage cavities are prone to water ingress, and the alloy ingots are prone to explosion during the secondary melting process, causing safety accidents to manufacturers using zinc alloy ingots

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