Method for smelting TA2 casting ingot by using hot cathode electron beam cold bed furnace

Abstract

The invention provides a method for smelting a TA2 casting ingot by using a hot cathode electron beam cold bed furnace. The method comprises the steps that after scattered titanium sponge and titaniumdioxide powder are evenly mixed according to the ratio, a mixture is added into the hot cathode electron beam cold bed furnace to be cast, and the TA2 casting ingot is obtained. A melting process ofthe hot cathode electron beam cold bed furnace includes a gun starting stage, a casting ingot bottom making stage and a stable smelting stage; the hot cathode electron beam cold bed furnace comprisesa smelting zone, a refining zone and a crystallization zone which are adjacent in sequence; and in the stable smelting stage, the power of the smelting zone is controlled to be 1200 Kw to 1800 Kw, thepower of the refining zone is controlled to be 600 Kw to 800 Kw, and the power of the crystallization zone is controlled to be 600 Kw to 1000 Kw. The method has the beneficial effects that compared with a traditional production method, the smelting method for producing the TA2 casting ingot significantly reduces the smelting process, the whole smelting process is simple, operation is simple, theproduction efficiency is greatly improved, the produced TA2 casting ingot product effectively meets the market demand, the economic efficiency of enterprises is improved, and the market competitive advantage of the enterprises is improved.

Description

technical field [0001] The invention relates to the technical field of titanium-based alloys, in particular to a method for melting TA2 ingots in a hot cathode electron beam cold hearth furnace. Background technique [0002] Titanium alloys are widely used in various fields due to their high strength, good corrosion resistance, and high heat resistance, especially in engine systems in various fields. Titanium alloy is an important material in the aerospace industry. With the rapid development of various countries in the aerospace field, its consumption is also showing rapid growth. In order to produce high-quality, high-clean titanium alloys for aero-engine rotating parts, in the late 1980s, the cooling bed melting technology was introduced internationally. Due to its excellent low-density inclusions (LDI for short) and high-density inclusions (HDI for short), The removal effect has unique advantages in the production of titanium alloy ingots for key aerospace components. ...

AI Technical Summary

Problems solved by technology

[0006] Vacuum consumable furnace (VAR) is used for smelting or bulk material (sponge titanium is mixed with oxygen and then briquetted) is smelted by electron beam cold hearth furnace (EB). The corresponding smelting process has the following problems: smelting process is cumbersome, The process is complicated, the operation is inflexible, and the whole smelting process is time-consuming, time-consuming and labor-intensive, which makes the contradiction between the low production efficiency of TA2 castings, the large demand of the domestic market and the high profit of this product more and more prominent.