Electroslag remelting process of titanium-containing alloy steel

A technology of electroslag remelting and titanium alloy steel, which is applied in the field of steelmaking technology, can solve the problems of increasing production costs, achieve the effects of ensuring quality, shortening the process flow, and reducing the investment in slag purification equipment

Inactive Publication Date: 2011-12-14
CHONGQING IRON & STEEL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, special equipment is required for slag purification, and it takes a lot of manpower, material resources and time to purify slag, which increases the production cost.

Method used

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  • Electroslag remelting process of titanium-containing alloy steel
  • Electroslag remelting process of titanium-containing alloy steel

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 It is a flow chart of the electroslag remelting process of the titanium-containing alloy steel of the present invention.

[0034] As shown in the figure, the electroslag remelting process of titanium-containing alloy steel in this embodiment includes the following steps:

[0035] a. Prepare consumable electrodes;

[0036] b. Electroslag preparation;

[0037] c. Electroslag forming;

[0038] d. Electroslag remelting;

[0039] In the process of electroslag slagging in the process c, one-third of the total amount of slag is added to the crystallizer to make slagging, and the remaining slag is mixed with an appropriate amount of a mixture including Al powder and FeTi powder, and then added to the crystallizer to make slagging . In specific implementation, the proportion relationship of remaining slag, Al powder and FeTi powder needs to be adjusted according to different titanium-containing alloy steels in order to obtain the best protection effect and en...

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PUM

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Abstract

The invention discloses an electroslag remelting process for titanium alloy steel, which comprises the following steps of: (1) preparing consumable electrodes; (2) preparing electroslag; (3) forming slag through electroslag; (4) remelting electroslag. The step (3) of slag formation comprises the following procedures of: firstly, adding one third of total slag material into a crystallizer to form slag, mixing a right amount of mixture including Al powder and FeTi powder into the rest residue material, and adding the rest residue material with the mixture into the crystallizer to form slag. Theelectroslag remelting process for titanium alloy steel does not need special slag purification process, the investment to slag purification equipment is reduced, the technological flow is shortened, and the production cost is greatly lowered. By adding the mixture of Al powder, FeTi powder and CaF2 powder into a slag pool in the process, oxygen generated by unstable oxides in the molten slag can be prevented from entering the slap pool and a molten pool to oxidize elements in steel, and the massive uncertain oxidation burning of Ti element in steel is avoided. Therefore, the content of Ti element in the titanium alloy steel obtained by the process can accurately reach the standard requirement, and the quality of the titanium alloy steel is ensured.

Description

technical field [0001] The invention relates to a steelmaking process, in particular to a smelting process of titanium-containing alloy steel. Background technique [0002] Electroslag remelting is a method of smelting using the resistance heat generated when the current passes through the slag as a heat source. Its main purpose is to purify the metal and obtain a steel ingot with a uniform and dense crystal structure. In the process of obtaining titanium-containing alloy steel through electroslag remelting, since Ti is a highly active and easily oxidized element, how to prevent active elements from being oxidized and burned during the electroslag process has always been an important metallurgical issue in electroslag remelting. [0003] In the process of electroslag remelting, oxygen enters the slag pool and molten pool through the following channels, oxidizes and burns Ti, and affects the change of Ti content in steel: [0004] 1. The oxygen dissolved in the consumable el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/18
Inventor 陈知伟
Owner CHONGQING IRON & STEEL (GRP) CO LTD
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