Method for preparing ruthenium-containing corrosion resistant titanium alloy

A titanium alloy and corrosion-resistant technology, which is applied in the field of preparation of ruthenium-containing corrosion-resistant titanium alloy, can solve the problems of high cost, long cycle, and many processes, and achieve the effects of simple operation, low cost, and stable chemical properties

Inactive Publication Date: 2009-07-15
BAOJI TITANIUM IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional smelting process of ruthenium-containing alloys is prepared by sponge titanium and ruthenium-containing master alloys (Ti-Ru, etc.), and its production steps include ruthenium-containing master alloy ingot smelting, turning chips, crushing, selection, screening and other proc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Accurately weigh 100kg of titanium sponge and 0.11kg of ruthenium powder (particle size: -70 mesh), fully mix the ruthenium powder and titanium sponge and press it into an electrode block, and use plasma arc welding to weld the electrode block into titanium of the required specification The electrodes are then smelted into ingots by vacuum electric arc furnace at least twice. After strict process control of batching, electrode pressing, electrode welding, and smelting, the ruthenium content of the head and bottom of the titanium ingot is 0.10% and 0.105%, and the ingot is inspected by chemical composition analysis and surface quality. After passing the forging, rolling, etc. The TA27 (Ti-0.10Ru) titanium material with good quality is produced to meet the needs of industrial use.

Embodiment 2

[0024] Accurately take required sponge titanium, aluminum-vanadium master alloy and pure aluminum 1000kg altogether, mix into ruthenium powder 1.1kg (particle size:-100 order), its nominal chemical composition Ti-6Al-4V-0.11Ru (wt%), The TC23 alloy ingot containing ruthenium can be obtained according to the steps in Example 1, and the chemical analysis results of the ruthenium content at the head and bottom of the titanium ingot are: 0.10%, 0.11%.

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Abstract

A method for preparing ruthenium-containing corrosion-resistant titanium alloy relates to a method for adding the element ruthenium to the titanium ingot smelting, and is applied to the procedure of preparing titanium and titanium alloy in the fields, such as nuclear power, metallurgy, petrochemical engineering and the like. The method, which adopts the materials of sponge titanium and master alloy to press electrodes and the preparation method of vacuum arc smelting, is characterized in that the alloy composition ruthenium is added in the form of powder when the electrodes are pressed. All you need to do for realizing the new smelting process for preparing the ruthenium-containing titanium alloy without changing the original process for preparing the titanium and the titanium alloy is to add the ruthenium powder in a certain amount to the procedure of pressing the electrodes, and the prepared element ruthenium is evenly distributed without metallurgical defects, such as inclusion and the like. The invention has the remarkable advantages of convenient operation, low cost, precise and stable composition control and the like, solves the problem with the addition of the element ruthenium in smelting the titanium ingot and improves the corrosion resistance of the titanium material on the premise that the conventional performance of the prepared ruthenium-containing titanium alloy is not affected, therefore, the method can meet the requirements of the titanium material in the industrial field.

Description

technical field [0001] The invention relates to a method for preparing a ruthenium-containing corrosion-resistant titanium alloy. Background technique [0002] Due to its excellent corrosion resistance, the application of titanium continues to expand, and it has become an increasingly important engineering corrosion-resistant metal, widely used in petroleum refining, seawater desalination, metallurgical engineering, salt production and other fields. The main corrosion-resistant titanium alloys include titanium-palladium alloy, titanium-molybdenum-nickel alloy and titanium-molybdenum alloy, among which titanium-palladium alloy is a kind of titanium alloy with better resistance to crevice corrosion used in industry. Titanium-palladium metal α alloy, its process performance and mechanical properties are similar to pure titanium, the weld has the same corrosion resistance as the base metal, it is widely used in chlorine-saturated brine, moist halogen, acid chloride solution, the...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C14/00
Inventor 陈峰李献军丁长琴陈战乾乔璐王立平高颀何育兴冯军宁
Owner BAOJI TITANIUM IND CO LTD
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