Ti-Mo-Ni alloy ingot preparation method

An alloy ingot, titanium molybdenum nickel technology is applied in the fields of metallurgy, casting and petrochemical industry, which can solve the problems of ingot segregation and inclusion metallurgy, and achieve the effects of not easy segregation and high-density inclusions, improving metallurgical quality, and simple production process.

Inactive Publication Date: 2010-07-07
BAOJI TITANIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to avoid the deficiencies of the prior art, the present invention proposes a method for preparing a titanium-molybdenum-nickel alloy ingot to solve the problems of segregation and inclusion metallurgical defects in the ingot in the original production method, and the chemical composition of the prepared ingot conforms to GB / T 3620.1 requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation steps are as follows:

[0027] Step 1: Calculate and weigh the sponge titanium and nickel-molybdenum master alloy according to the target chemical composition of the ingot;

[0028] The mass percent content of molybdenum in the nickel-molybdenum master alloy used is 25%. According to the ingredients of Ti-0.35Mo-0.75Ni, it is calculated that 98.69 kg of sponge titanium, 1 kg of nickel-molybdenum master alloy, and 0.31 kg of Ti-32Mo master alloy are required for smelting 100 kg of titanium-molybdenum-nickel alloy ingot; the nickel-molybdenum master alloy is a sheet Shape or particle size, the maximum size ≤ 10mm.

[0029] Step 2: Mix the raw materials weighed in step 1 and press them into an electrode block; the density of the electrode block is greater than 2 g / cm 3 above;

[0030] Step 3: Weld the electrode block into a consumable electrode for electric arc furnace smelting by using welding methods such as plasma arc;

[0031] Step 4: The titanium-m...

Embodiment 2

[0034] Concrete preparation steps are as follows:

[0035] Step 1: Calculate and weigh the sponge titanium and nickel-molybdenum master alloy according to the target chemical composition of the ingot;

[0036] The mass percent content of molybdenum in the nickel-molybdenum master alloy used is 30%. According to the ingredients of Ti-0.3Mo-0.7Ni, it is calculated that 99kg of sponge titanium and 1kg of nickel-molybdenum master alloy are needed for smelting 100kg of titanium-molybdenum-nickel alloy ingot. Weigh sponge titanium, nickel-molybdenum master alloy and Ti-32Mo master alloy according to the above calculation weight ; The nickel-molybdenum master alloy is in the form of flakes or grains, and the maximum size is ≤10mm.

[0037] Step 2: Mix the raw materials weighed in step 1 and press them into an electrode block; the density of the electrode block is greater than 2 g / cm 3 above;

[0038] Step 3: Weld the electrode block into a consumable electrode for electric arc fur...

Embodiment 3

[0042] Concrete preparation steps are as follows:

[0043] Step 1: Calculate and weigh the sponge titanium and nickel-molybdenum master alloy according to the target chemical composition of the ingot;

[0044] The mass percent content of molybdenum in the nickel-molybdenum master alloy used is 35%. According to the ingredients of Ti-0.35Mo-0.65Ni, it is calculated that 99kg of sponge titanium and 1kg of nickel-molybdenum master alloy are needed for melting 100kg of titanium-molybdenum-nickel alloy ingot, and the sponge titanium, nickel-molybdenum master alloy and Ti-32Mo master alloy are weighed according to the above calculation weight ;

[0045] Step 2: Mix the raw materials weighed in step 1 and press them into an electrode block; the density of the electrode block is greater than 2 g / cm 3 above;

[0046] Step 3: Weld the electrode block into a consumable electrode for electric arc furnace smelting by using welding methods such as plasma arc;

[0047] Step 4: The titani...

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Abstract

A Ti-Mo-Ni alloy ingot preparation method is characterized in that Ni-Mo intermediate alloy (the mass proportion content of Mo element is 20-35%) is added, the production steps of the Ti-Mo-Ni alloy ingot include that: titanium sponge, Ni-Mo intermediate alloy or Ti-Mo intermediate alloy are mixed uniformly and pressed into electrode blocks, the electrode blocks are welded into consumable electrodes through welding modes such as plasma arc, and the Ti-Mo-Ni alloy ingot is prepared through twice vacuum consumable electric arc smelting. The Ti-Mo-Ni alloy ingot produced by the preparation method has uniform and stable chemical compositions, has the chemical composition deviation of being less than 0.15%, is segregation free and overcomes the defect of high density metallurgical inclusion. The invention is applicable to producing the Ti-Mo-Ni alloy ingot with high metallurgical quality requirement.

Description

technical field [0001] The invention relates to a method for preparing a titanium-molybdenum-nickel alloy ingot, in particular to a method for preparing a titanium-molybdenum-nickel (Ti-0.3Mo-0.8Ni) alloy ingot, which belongs to the field of casting technology. The titanium material produced is mainly used In metallurgy, petrochemical and other fields. Background technique [0002] Titanium and titanium alloys have high specific strength and corrosion resistance, and are promising structural and corrosion-resistant materials. Since the early 1950s, industrial-scale production began. Due to price and supply issues, its practical application is limited to the military aviation industry. With the development of the titanium industry, titanium and titanium alloys have gradually shifted from military use to civilian use, and from the aviation industry to general industry. The most important thing is to make corrosion-resistant structural materials. At present, the amount of tit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C14/00
Inventor 何育兴陈峰李献军乔璐冯军宁张健国斌张君峰
Owner BAOJI TITANIUM IND CO LTD
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