Large complex rudder framework titanium alloy casting method

Abstract

The invention provides a large complex rudder framework titanium alloy casting method, which comprises the following steps of: designing a bottom pouring type pouring system according to the structural characteristics of a rudder framework titanium alloy casting to be formed, penetrating a sprue from the top of the bottom pouring type pouring system to the bottom of the bottom pouring type pouringsystem, generating a graphite mold in a software differencing mode according to the bottom pouring type pouring system, enabling the graphite mold to enter a degassing furnace for degassing at normaltemperature, the vacuum degree of the degassing furnace being less than 3 Pa, assembling and combining the split graphite mold subjected to degassing, and putting the assembled graphite mold into a titanium alloy skull furnace, conducting vacuum pumping to melt a titanium alloy ingot, conducting casting forming, and generating a formed rudder framework titanium alloy casting. The method can meetthe production requirements of large complex rudder framework titanium alloy castings, and the internal quality and the percent of pass of the large complex rudder framework titanium alloy castings are improved.

Description

technical field [0001] The invention relates to the technical field of titanium alloy graphite type preparation, in particular to a method for casting a large complex rudder skeleton-like titanium alloy. Background technique [0002] Titanium alloy has excellent properties such as high specific strength, high heat resistance, and excellent corrosion resistance. It is a high-quality light metal structural material and is widely used in aerospace and other fields. [0003] The missile has the characteristics of fast speed and long range. The technical indicators of a certain type of missile require high precision, high Mach, over-the-horizon, penetration, etc. The structural parts of the missile body are made of titanium alloy materials. Among them, the length of a rudder skeleton casting is 600mm, the width is 240mm, the maximum wall thickness is 17mm, the minimum wall thickness is 8mm, and the interior is a variable wall thickness structure. There are many lightening groove...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiency that the existing technology cannot meet the production requirements of large and complex titanium alloy rudder frame castings, resulting in low internal quality and pass rate of large complex titanium alloy rudder frame castings, and to provide a large and complex Casting method of titanium-like alloy for rudder frame

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