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A method for reducing segregation of titanium alloy ingot with high iron content

A titanium alloy and ingot casting technology, which is applied in the field of reducing segregation of titanium alloy ingots with high iron content, can solve problems such as easy formation of β spots, achieve good practical value, solve uneven melting components, and reduce segregation effects

Active Publication Date: 2021-03-30
XIANYANG TIANCHENG TITANIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for reducing the segregation of titanium alloy ingots with high iron content, which solves the problem that β spots are easily formed due to segregation in the existing titanium alloys during the smelting process

Method used

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  • A method for reducing segregation of titanium alloy ingot with high iron content
  • A method for reducing segregation of titanium alloy ingot with high iron content
  • A method for reducing segregation of titanium alloy ingot with high iron content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] This example takes the preparation of Φ460TB6-550Kg titanium alloy ingot as an example, and the specific preparation method is as follows.

[0067] Step 1. Use 0-grade sponge titanium, Al-V-Fe, Ti-Fe, aluminum beans, TiO 2 As the raw material, the raw material is selected according to the composition 9.8V-1.8Fe-3.1Al-0.07O, and the sponge titanium is made of 0-grade small particle sponge titanium.

[0068] Step 2, the 0-grade sponge titanium, Al-V-Fe, aluminum beans and TiO 2 Place in an automatic mixer and mix evenly to obtain a preliminary mixture. Divide the Ti-Fe component in step 1 into four equal parts by weight, and wrap it into four alloy strips with aluminum foil; then use the edge reverse segregation cloth method Artificial cloth is carried out, wherein two Ti-Fe alloy clad strips are placed between the second layer paving and the third paving, and the distance between the two Ti-Fe alloy clad strips is 10mm from the mold.

[0069] Step 3. Put the raw materi...

Embodiment 2

[0082] This example takes the preparation of Φ460TB6-1000Kg titanium alloy ingot as an example, and the specific preparation method is as follows.

[0083] Step 1. Use 0-grade sponge titanium, Al-V-Fe, Ti-Fe, aluminum beans, TiO 2 As the raw material, the raw material is selected according to the composition 10V-1.85Fe-3.1Al-0.07O, and the sponge titanium is made of 0-grade small particle sponge titanium.

[0084] Step 2, the 0-grade sponge titanium, Al-V-Fe, aluminum beans and TiO 2 Place in an automatic mixer and mix evenly to obtain a preliminary mixture. Divide the Ti-Fe component in step 1 into four equal parts by weight, and wrap it into four alloy strips with aluminum foil; then use the edge reverse segregation cloth method Artificial cloth is carried out, wherein two Ti-Fe alloy clad strips are placed between the second layer paving and the third paving, and the distance between the two Ti-Fe alloy clad strips is 20mm from the mold.

[0085] Step 3. Put the raw mater...

Embodiment 3

[0097] This example takes the preparation of Φ460TB6-700Kg titanium alloy ingot as an example, and the specific preparation method is as follows.

[0098] Step 1. Use 0-grade sponge titanium, Al-V-Fe, Ti-Fe, aluminum beans, TiO 2 As the raw material, the raw material is selected according to the composition 9.8V-1.8Fe-3.1Al-0.07O, and the sponge titanium is made of 0-grade small particle sponge titanium.

[0099] Step 2, the 0-grade sponge titanium, Al-V-Fe, aluminum beans and TiO 2 Place in an automatic mixer and mix evenly to obtain a preliminary mixture. Divide the Ti-Fe component in step 1 into four equal parts by weight, and wrap it into four alloy strips with aluminum foil; then use the edge reverse segregation cloth method Artificial cloth is carried out, wherein two Ti-Fe alloy clad strips are placed between the second layer paving and the third paving, and the distance between the two Ti-Fe alloy clad strips is 15mm from the mold.

[0100] Step 3. Put the raw materi...

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Abstract

The invention discloses a method for reducing segregation of a high-iron composition titanium alloy casting ingot. The method comprises the following steps that 1, 0-grade sponge titanium, Al-V-Fe, Ti-Fe, aluminum shots and TiO2 are used as raw materials, and the weights of the required raw materials are weighed according to the component proportion of a titanium alloy; 2, the 0-grade sponge titanium, the Al-V-Fe, the aluminum shots and the TiO2 are mixed uniformly to obtain a preliminary mixture, and the Ti-Fe component is wrapped into an alloy wrapping strip through an aluminum foil; and then an edge inverse segregation distribution method is adopted for distribution; 3, an oil press is used for pressing to obtain a single electrode block; 4, the single electrode block is welded to obtain an overall consumable electrode; and 5, the overall consumable electrode is dried, and the casting ingot is melted. According to the method for reducing segregation of the high-iron composition titanium alloy casting ingot, an edge inverse segregation distribution manner is adopted to an easy-segregation alloy, the problems that the titanium alloy containing easy-segregation elements is uneven in smelting constituent, easy to segregate and the like are solved; and during melting, the manners of the large magnetic field and the small current are adopted to ensure the metallurgical quality ofthe casting ingot.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy processing methods, and in particular relates to a method for reducing segregation of titanium alloy ingots with high iron content. Background technique [0002] The high-iron composition is close to β-type titanium alloy, which has high specific strength, good fracture toughness, creep performance and corrosion resistance, and has been widely used in aerospace, biomedicine and other fields. [0003] In the field of titanium alloy casting, the problem of uneven chemical composition of alloys caused by serious element segregation is becoming more and more serious. Titanium alloys with high iron content are prone to β spots due to segregation during the melting process, and the vacuum consumable arc melting is characterized by solidification while melting. Therefore, the uniformity of the alloy material in the electrode plays an important role in the quality of the ingot. . Contents of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C14/00C22B9/20
Inventor 李晗嫣张飞奇车伟
Owner XIANYANG TIANCHENG TITANIUM IND
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