Method for producing carbon-containing titanium sponge and device thereof

Abstract

The invention discloses a method for producing carbon-containing titanium sponge and a special device for the method. The method comprises the following steps of pre-adding a carbon-containing compound before titanium sponge is produced from titanium tetrachloride, and then reducing the titanium tetrachloride premixed with the carbon-containing compound to obtain carbon-containing titanium sponge with uniform components, wherein the carbon-containing compound is titanium tetrachloride. According to the method, titanium tetrachloride is directly added before the generation of titanium sponge, and the content of carbon in titanium tetrachloride is controlled so as to achieve the purpose that the content of carbon in titanium tetrachloride is stably controlled; no carbon powder needs to be additionally added during the smelting of a titanium alloy, and thus the segregation of carbon element components and local defects in the titanium alloy caused by the conventional adding method are avoided; sizes of carbides and particles precipitated in the titanium alloy of the carbon-containing titanium sponge are very ideal, the negative impact of a carbon element added in the titanium alloy is effectively solved, meanwhile, the difficulty in preparing and mixing the titanium alloy is reduced, the uniform components and stable quality of titanium alloy ingots are ensured, and a series of technical difficult problems caused by adding the carbon element during the smelting of the titanium alloy at home are solved.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal smelting, in particular to a method and device for producing carbon-containing titanium sponge. Background technique [0002] As an impurity element of sponge titanium, carbon element needs to be strictly controlled in the production process of sponge titanium; the carbon element in sponge titanium mainly comes from magnesium ingot and titanium tetrachloride, which is produced by using qualified titanium tetrachloride and low-carbon magnesium ingot The carbon content of the sponge titanium is usually lower than 0.01%, and the content of carbon element in the sponge titanium is stable, which fully meets the requirements of the titanium alloy for the carbon content of the sponge titanium. [0003] Near-α titanium alloys are typical high-temperature alloys, which have both the creep resistance of α-titanium alloys and high strength. The service temperature of this type of alloy is 500-650°C...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for producing carbon-containing titanium sponge, which can solve a series of problems caused by uneven carbon addition in the titanium alloy smelting process by pre-adding carbon before the formation of sponge titanium

The carbide and particle size of the carbon-containing sponge titanium in the titanium alloy are very ideal, which effectively solves the negative impact of adding carbon to the titanium alloy, and also reduces the difficulty of titanium alloy batching and mixing, ensuring the uniform composition and quality of the titanium alloy ingot Stable and solves a series of technical problems of adding carbon elements in the domestic titanium alloy smelting process

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