Vacuum-induction centrifugal casting device and titanium alloy casting method

Abstract

The invention discloses a vacuum-induction centrifugal casting device comprising a furnace body, wherein the upper end of the furnace body is provided with a furnace cover, a smelting cavity and a centrifugal casting cavity are symmetrically arranged in the furnace body, a smelting device is arranged in the smelting cavity, a centrifugal heating and casting device is arranged in the centrifugal casting cavity, and an overturning space for the smelting device is respectively arranged between the upper parts of the smelting cavity and the centrifugal casting cavity and the furnace cover. The invention further discloses a titanium alloy casting method by utilizing the vacuum-induction centrifugal casting device, wherein the titanium alloy casting method comprises the following steps that after titanium alloy is molten into liquid metal in a crucible, the crucible is overturned so that the liquid metal flows into a rotating casting liner, and a heating and heat-insulating device is further mounted outside the casting liner, finally a thin-wall titanium alloy casting is obtained. The vacuum-induction centrifugal casting device disclosed by the invention can cast flawless-surface thin-wall metal components.

Description

technical field [0001] The invention belongs to the technical field of special casting, and relates to a vacuum induction centrifugal casting equipment, and also relates to a method for casting titanium alloy castings by using the vacuum induction centrifugal casting equipment. Background technique [0002] Centrifugal casting specifically refers to the casting method of pouring liquid metal into a rotating mold, filling the mold and solidifying it in the mold under the action of centrifugal force, so as to cast castings, which belongs to one of the special casting technologies. [0003] The characteristics of centrifugal casting are: the molten metal is filled and solidified under the action of centrifugal force, the effect of metal feeding is good, the outer structure of the cast casting is dense, there are few non-metallic inclusions, and the mechanical properties are good; no molding and core making are required, which can save Related materials and equipment input. [...

AI Technical Summary

Problems solved by technology

[0004] The pouring part of the traditional vacuum induction centrifugal pouring furnace only adopts the principle of centrifugal acceleration. During the casting process, the rotation of the mold shell gives the molten metal a lateral acceleration, so that the metal is subjected to a force away from the axis. The force can be Accelerate the filling speed of the liquid metal to the shell, shorten the flow time, make the filling shell more sufficient, and finally get a casting with a more uniform structure; but this type of vacuum induction centrifugal casting furnace also has defects, and the casting wall thickness is below 1mm When thin-walled metal castings are used, there will be insufficient pouring or cold shut defects, which will cause defects on the surface of the cast thin-walled metal castings and reduce the quality of thin-walled metal castings

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